KR102374263B1 - System for supplying power - Google Patents

Abstract

The present specification relates to a power supply system that includes a circuit breaker that regulates connection with a power bus, and controls the supply of power by opening and closing the circuit breaker according to various situations occurring in the system.

Description

Power supply system {SYSTEM FOR SUPPLYING POWER}

The present invention relates to a power supply system capable of supplying uninterruptible power.

The technology underlying the present invention relates to a system comprising a plurality of power supplies.

A system in which a plurality of power supplies supplies power to each load may be commonly connected through a DC bus line. When connected to the common bus line as described above, there is an advantage in that power can be supplied to and supplied with neighboring power devices through the DC bus line. However, when configuring the system in this way, there are limitations such as stability problems of the system, difficulty in controlling power supply and demand, and the absence of a countermeasure in case of an accident.

By having a plurality of power supply devices having a complicated configuration, when compatibility between devices is poor, system operation cannot be performed stably. In addition, when the load to which each device supplies power is an important load that requires power supply at all times, it is required to provide a separate UPS device in preparation for abnormal conditions. There is a problem in that the provision of the UPS device itself is not easy due to structural/design constraints. In addition, as the configuration becomes more complicated, the control of each device and system is inevitably more complicated, and the risk of failures and accidents increases. As a result, it becomes difficult to supply stable and reliable power, so the operation of the load is inevitably unstable, and there is a problem in that an appropriate operation response cannot be made according to the occurrence of various accidents.

The present invention aims to improve the limitations of the prior art as described above.

That is, the present specification is to provide a power supply system capable of improving the limitations of the prior art.

Specifically, an object of the present invention is to provide a power supply system in which power is supplied and supplied between a plurality of power modules provided in the system, so that each of the plurality of power modules can mutually perform a UPS function.

Another object of the present invention is to provide a power supply system in which power supply to a load can be effectively maintained in various abnormal situations.

In addition, an object of the present invention is to provide a power supply system capable of providing a stable and appropriate response to power supply and demand according to various abnormal situations.

A power supply system according to the present invention for solving the above-described problems is provided with a circuit breaker for controlling each of the circuits to which a plurality of power modules are connected, and opens and closes the circuit breaker according to various situations occurring in the system to supply power control as a solution.

That is, the power supply system according to the present invention has a circuit breaker corresponding to a plurality of power modules, and by controlling the circuit breaker to supply and receive power, a UPS function is performed between the plurality of power modules. .

The technical features as described above may be applied to and implemented in a power supply system, and the present specification provides an embodiment of a power supply system having the technical features as described above.

An embodiment of the power supply system according to the present invention having the above technical features as a problem solving means converts the power supplied from one or more power sources into DC power, and converts the DC power into the driving power of the load, A plurality of power boards supplying to the load and one side of each of the plurality of power boards are arranged to connect or separate the power terminals of the two power boards between one side of each of the plurality of power boards and the other side of the power board adjacent to the one side a plurality of circuit breakers, wherein when power supply is stopped in one or more of the plurality of power supply panels, at least one of the circuit breakers connected to one side and the other side of the power supply panel where the power supply is stopped is closed, At least one of the power terminals of the power panel connected to both sides of the stopped power panel is connected to the power end of the stopped power panel.

In an embodiment of the power supply system, the one or more power supply sources include a first AC power supply, a second AC power supply, and a DC power supply for supplying AC power, so that the first AC power source and the second AC power source are stored. When the power supply is interrupted, the power stored while the power supply is switched and restored may include battery power supplied to the plurality of power panels.

In an embodiment of the power supply system, after the power supply is stopped, the stored power may be supplied to the plurality of power boards in an unsuccessful manner until the power supply is switched and restored. .

In an embodiment of the power supply system, the one or more power supply sources are emergency power for supplying emergency power to the load when power supplies of the first AC power, the second AC power, and the battery power are stopped. It may further include a power source.

In an embodiment of the power supply system, each of the plurality of power supply panels converts the power supplied from the one or more power sources into the DC power at least one first power conversion device and the at least one first power conversion device It may include a second power converter for converting the DC power supplied from the drive power supply to the load.

In an embodiment of the power supply system, the plurality of power supply panels may supply the DC power to the second power converter to any one of the one or more first power converters according to the state of the one or more power supplies. there is.

In one embodiment of the power supply system, the plurality of power supply panels, when the power supply of the converter for supplying the DC power to the second power converter is stopped, through the converter other than the converter The DC power may be supplied to the second power converter.

In one embodiment of the power supply system, one or more first power conversion devices in the mall, while the conversion device is switched to the other conversion device, the second power conversion through the conversion device receiving power from the battery power source The DC power may be supplied to the device.

In one embodiment of the power supply system, in each of the plurality of power supply panels, the power terminal may be connected to any two circuit breakers among the plurality of circuit breakers.

In an embodiment of the power supply system, in the plurality of power supply panels, the plurality of circuit breakers may be respectively disposed between a power end of one of the power panels and a power end of two adjacent power panels.

In one embodiment of the power supply system, each of the plurality of power supply panels includes a first power stage corresponding to one end of the power stage and a second power stage corresponding to the other end of the power stage, The circuit breaker may be disposed between the two power boards to connect or disconnect the first power end of the power board of one side and the second power end of the power board of the other side.

In an embodiment of the power supply system, the plurality of circuit breakers may be provided in a number corresponding to the plurality of power supply panels.

In an embodiment of the power supply system, the plurality of circuit breakers may be closed when the DC power source is connected between the plurality of power supply panels, and open when the DC power supply is intercepted between the plurality of power supply panels.

In an embodiment of the power supply system, the plurality of circuit breakers are provided between the power supply panel where the power supply is stopped and the interrupted power supply panel and the adjacent power panel when the supply of at least one of the plurality of power supply panels is stopped. The arranged circuit breaker may be closed to connect the stopped power panel and the adjacent power panel to supply the DC power from the adjacent power panel to the stopped power panel.

In one embodiment of the power supply system, the interrupted power supply panel, the power supply is stopped, and the DC power in the converter connected to the battery power until the DC power conducted from the adjacent power supply panel is supplied. Power may be supplied.

In an embodiment of the power supply system, a control for monitoring the state of at least one of the plurality of power supply panels and the plurality of circuit breakers, and controlling at least one of the plurality of power supply panels and the plurality of circuit breakers according to the monitoring result It may further include a device.

In addition, another embodiment of the power supply system according to the present invention having the above technical characteristics as a problem solving means converts the power supplied from each of a plurality of loads and a plurality of power sources into DC power, and converts the DC power to A plurality of power boards for converting driving power for driving the plurality of loads and supplying the driving power to the plurality of loads, each of the plurality of power boards is commonly connected to an output terminal through which the DC power flows, A bus line through which the DC power output from each of the plurality of power boards is transmitted, and an output terminal between two adjacent power boards among the plurality of power boards on the bus line are provided in each of the converters, the connection between the plurality of power boards A plurality of circuit breakers that intermittently control and opening and closing of the plurality of circuit breakers according to the state of each of the plurality of power boards, thereby controlling the supply and supply of the DC power between the plurality of power boards through the bus line. include

In an embodiment of the power supply system, when an abnormality occurs in any one or more of the plurality of power supply panels, the control device may include any one of an abnormal power supply panel and a circuit connected to a power supply panel adjacent to the abnormal power supply panel. By closing the circuit breaker, it is possible to control the abnormal power supply panel to receive the DC power from the adjacent power supply panel.

The power supply system according to the present invention as described above may be applied and implemented to a power module supplying/using DC power, a power supply system, and a method of operating a power supply system. In particular, it can be effectively applied to a DC UPS module and a power supply system having the same. However, the technology disclosed in the present specification is not limited thereto, and all power supply devices, power supply devices, power control devices, power supply systems, power systems, power control systems, plant systems, and plant control systems to which the technical idea of the technology can be applied. , a plant control method, an energy storage system, a control method or operation method of an energy storage system, a motor control panel for controlling a plurality of motor loads, a motor control system, a motor operation system, and the like.

The power supply system according to the present invention has the effect of being able to perform the UPS function between the plurality of power modules by controlling the supply and demand of power by controlling the circuit breaker of each of the plurality of power modules connected to each other.

Accordingly, there is an effect that the power supply to the load can be maintained without interruption even when various abnormal situations occur in the system/system.

That is, the power supply system according to the present invention has the effect that it is possible to make an appropriate and stable power supply response to various abnormal situations occurring on the system/system.

In addition, the power supply system according to the present invention has the effect of enabling efficient operation with minimal means by controlling the supply and demand of power by controlling the circuit breakers of each of a plurality of interconnected power modules according to the occurrence situation.

In addition, the power supply system according to the present invention has the effect of being able to increase the stability, reliability and effectiveness of the large-capacity system operation.

As a result, the power supply system according to the present invention has the effect of being able to solve the problems as described above, thereby improving the limitations of the prior art.

1 is a block diagram showing the configuration of a power supply system according to the present invention.
Figure 2 is a block diagram showing the configuration of the power panel of the power supply system according to the present invention.
3 is a block diagram showing a specific structural configuration of the power panel of the power supply system according to the present invention.
Figure 4 is an exemplary view showing a specific embodiment of the power supply system according to the present invention 1.
5 is an exemplary view showing a specific embodiment of the power supply system according to the present invention 2.
6 is an exemplary view showing a specific embodiment of the power supply system according to the present invention 3.
7 is an exemplary diagram showing a specific embodiment of the power supply system according to the present invention 4.

It should be noted that the technical terms used in this specification are only used to describe specific embodiments, and are not intended to limit the spirit of the technology disclosed herein. In addition, the technical terms used in this specification should be interpreted in the meaning generally understood by those of ordinary skill in the art to which the technology disclosed in this specification belongs, unless otherwise defined in this specification. It should not be construed in a very comprehensive sense or in an excessively reduced meaning. In addition, when the technical terms used in the present specification are incorrect technical terms that do not accurately express the spirit of the technology disclosed in this specification, they should be understood by being replaced with technical terms that can be correctly understood by those skilled in the art. In addition, general terms used in this specification should be interpreted according to the definition in the dictionary or according to the context before and after, and should not be interpreted in an excessively reduced meaning.

Also, as used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted.

In addition, in describing the technology disclosed in the present specification, if it is determined that a detailed description of a related known technology may obscure the gist of the technology disclosed in this specification, the detailed description thereof will be omitted. In addition, it should be noted that the accompanying drawings are only for easy understanding of the spirit of the technology disclosed in this specification, and should not be construed as limiting the spirit of the technology by the accompanying drawings.

Hereinafter, an embodiment of the power supply system according to the present invention will be described.

The power supply system may be implemented in a combination or separate form of the embodiments to be described below.

The power supply system may be a power supply system including a plurality of power modules.

The power supply system may be a system for supplying power including a plurality of packaged power supply devices.

Here, the power supply device may be a power supply panel in which a plurality of power control devices are packaged.

The power supply system 1000 (hereinafter referred to as a system), as shown in FIG. 1 , converts power supplied from one or more power sources 10 into DC power, and converts the DC power to a load 20 . The plurality of power boards 100, 200, 300 and 400 and the plurality of power boards 100, 200, 300 and 400 that are converted into driving power of a plurality of circuit breakers 130 for connecting or disconnecting the power terminals of the two power boards between one side of each of the plurality of power boards 100, 200, 300 and 400 and the other side of the power board adjacent to the one side; The circuit breaker 130, when power supply is stopped in one or more of the plurality of power supply panels 100, 200, 300 and 400, at least one of the circuit breakers connected to one side and the other side of the power supply panel where the power supply is stopped is closed. to connect at least one of the power terminals of the power panel connected to both sides of the interrupted power panel and the power end of the stopped power panel.

In the system 1000, the plurality of circuit breakers 130 change opening and closing according to the power supply state of one or more of the plurality of power boards 100, 200, 300, and 400, so that the plurality of power boards 100, 200, 300 and 400) connect or intermittently the DC power source.

The plurality of circuit breakers 130, each of the plurality of power boards 100, 200, 300 and 400, so that the connection between the plurality of power boards 100, 200, 300 and 400 is formed in a ring structure. Two power panels may be connected or separated between one side and the other side of the power panel adjacent to the one side.

Accordingly, each of the plurality of power boards 100 , 200 , 300 and 400 may be connected to two adjacent power boards, and may be connected in a ring structure between the plurality of power boards 100 , 200 , 300 and 400 .

Here, each of the plurality of power boards 100 , 200 , 300 and 400 may be a power supply device 100 as shown in FIGS. 2 and 3 .

That is, the power supply panel 100 may have a configuration of a power supply device as shown in FIGS. 2 and 3 , and the power supply system 1000 is a power supply as shown in FIGS. 2 and 3 . A plurality of power supply panels in the form of the supply device 100 may be included to include the plurality of power supply panels 100 , 200 , 300 and 400 .

The power board 100 may be a module including a plurality of power control devices.

The power supply panel 100 may be a power supply in which the plurality of power control devices are packaged.

Here, each of the plurality of power boards 100 , 200 , 300 and 400 may be a power supply device 100 as shown in FIGS. 2 and 3 .

That is, the power supply panel 100 may have a configuration of a power supply device as shown in FIGS. 2 and 3 , and the power supply system 1000 is a power supply as shown in FIGS. 2 and 3 . A plurality of power supply panels in the form of the supply device 100 may be included to include the plurality of power supply panels 100 , 200 , 300 and 400 .

The power board 100 may be a module including a plurality of power control devices.

The power supply panel 100 may be a power supply in which the plurality of power control devices are packaged.

For example, the plurality of power control devices may be a packaged power supply panel.

The power board 100 may be a package type power board provided in a building requiring high power, such as a power plant, a plant, a factory, a building, an apartment, and the like to supply power.

The power board 100 may also be a package type power board configured in any one space.

The power supply panel 100, the plurality of power control devices may be packaged to supply power to a load.

The power panel 100 is, as shown in FIG. 2 , at least one first power converter 110 and the DC power source for converting the power supplied from each of the one or more power sources 10 into the DC power. may include one or more second power conversion devices 120 for converting the driving power to the driving power for driving the load 20 and supplying the driving power to the load 20 .

As such, the power panel 100 includes the at least one first power conversion device 110 and the second power conversion device 120, and receives the power supplied from the at least one power supply source 10 as the driving power. , and supplied to the load 20 .

A specific configuration of the power supply panel 100 including the one or more first power converter 110 and the second power converter 120 may be as shown in FIGS. 2 and 3 .

The one or more power supply sources 10 for supplying power to the power panel 100 are connected to the one or more first power converters 110 from the outside, and the one or more first power converters 110, respectively can supply power to

Each of the one or more power sources 10 may be connected to each of the one or more first power converters 110 to supply DC or AC power to each of the one or more first power converters 110 .

The one or more power supply sources 10, as shown in FIGS. 2 and 3, store a first AC power supply 10#1 and a second AC power source 10#3 and DC power supplying AC power. and may include a battery power source 10#2.

Here, the first AC power supply 10#1 is a main system power supply G for supplying AC power, the second AC power supply 10#3 is a bypass system power supply P supplying AC power, and the The battery power source 10#2 may be a battery power source B that supplies DC power.

That is, the one or more power supply sources 10 may include a system power supply (G), a bypass power supply (P), and a battery power supply (B), as shown in FIG. 4 .

Accordingly, each of the plurality of power boards 100 , 200 , 300 , and 400 may receive power from each of the grid power G, the bypass power P, and the battery power B. .

The first AC power supply 10#1 may be a system power supply (G).

The first AC power supply 10#1 may be a system power supply G that supplies an AC power of 440 [V].

The second AC power supply 10#3 may be a bypass power supply P.

The second AC power supply 10#3 may be a bypass power supply P that supplies an AC power of 440 [V].

The battery power source 10#2 may be an emergency battery that stores DC power and supplies the stored DC power in an emergency.

The battery power source 10#2 may supply stored DC power to the power supply panel 100 when an abnormality occurs in the first AC power source and the second AC power source.

In the battery power B, the DC power is stored, and when power supply of the first AC power source 10#1 and the second AC power source 10#3 is stopped, the power supply is switched. During recovery, the power stored in the battery power B may be supplied to the plurality of power boards 100 , 200 , 300 and 400 .

The battery power B is, after the power supply is stopped, the stored power is supplied to the plurality of power boards 100, 200, 300 and 400 in an unsuccessful manner until the power supply is switched and restored. can

The one or more power supply sources 10 also provide an emergency to the load 20 when power supply of the first AC power source G, the second AC power source P, and the battery power source B is interrupted. It may further include an emergency power source (A) for supplying power generation.

The emergency power supply (A) can supply emergency power generation power to the load 20 when an abnormality occurs in the first AC power supply (G), the second AC power supply (P), and the battery power supply (B). there is.

The emergency power supply (A), the first AC power supply (G), the second AC power supply (P) and the battery power supply (P) supplying power to each of the plurality of power supply panels 100, 200, 300 and 400 B) When an abnormality occurs in all of them and power cannot be supplied, it may be a power supply for supplying emergency power to each of the loads 20 to maintain the operation of the loads 20 for a certain period of time.

For example, the emergency power source A may be a power source including an emergency generator.

Each of the plurality of power supply panels 100, 200, 300 and 400, preferably, as shown in FIG. 4, three power supply sources 10, that is, the system power supply (G), the bypass power supply (P) and power can be supplied from the battery power source (B), and the system power source (G), the bypass power source (P) and the battery power source (B) cannot supply power from the emergency power source (A). power can only be supplied.

Here, each of the one or more power supply sources 10 for supplying power to each of the plurality of power boards 100, 200, 300 and 400, is the plurality of power boards 100, 200, 300 and 400 in one system. ) may be supplied with power, or power may be supplied to each of the plurality of power boards 100 , 200 , 300 and 400 from each of the separated switchboards through a separate switchboard.

Each of the plurality of power supply panels 100, 200, 300 and 400, the one or more first power conversion devices 110, 210, 310 for converting the power supplied from the one or more power supply sources 10 to the DC power and 410) and the second power converter 120 for converting the DC power supplied from the one or more first power converters 110, 210, 310 and 410 into the driving power and supplying it to the load 20 , 220, 320 and 420).

Here, the one or more first power conversion devices 110 , 210 , 310 and 410 and the second power conversion devices 120 , 220 , 320 and 420 may be formed in plurality.

Each of the plurality of power supply panels 100, 200, 300 and 400 is one of the one or more first power conversion devices 110, 210, 310 and 410 according to the state of the one or more power supply sources 10. The DC power may be supplied to one or more of the second power converters 12 , 220 , 320 and 420 .

The first power conversion devices 110 , 210 , 310 and 410 are devices that convert the supplied power into DC power, for example, may be a converter.

The first power converters 110 , 210 , 310 and 410 may be an AC/DC converter that converts AC power into DC power, or a DC/DC converter that converts DC power into DC power.

The one or more first power conversion devices 110, 210, 310 and 410 may include at least one of an AC/DC converter for converting AC power to DC power and a DC/DC converter for converting the level of DC power. there is.

The one or more first power conversion devices 110 , 210 , 310 and 410 are three conversion devices 110#1 to #3, 210#1 to #3, corresponding to each of the one or more power supply sources 10 , 310#1 to #3 and 410#1 to #3).

The one or more first power conversion devices 110, 210, 310 and 410, the first AC power supply 10#1, the battery power supply 10#2, and the second AC power supply 10#3, respectively It is connected to and includes first to third converters (110#1 to #3, 210#1 to #3, 310#1 to #3, and 410#1 to #3) receiving power from the connected power source. can do.

Accordingly, the first AC power supply 10#1 is connected to the first converters 110#1, 210#1, 310#1 and 410#1, and the first converters 110#1 and 210 #1, 310#1 and 410#1) are supplied with AC power, and the battery power source 10#2 is connected to the second converters 110#2, 210#2, 310#2 and 410#2. to supply DC power to the second converters 110#2, 210#2, 310#2 and 410#2, and the second AC power supply 10#3 to the third converter 110#3 , 210#3, 310#3, and 410#3) may be connected to supply AC power to the third converters 110#3, 210#3, 310#3, and 410#3.

The first converters 110#1, 210#1, 310#1 and 410#1 may be AC/DC converters for converting AC power to DC power, and the second converters 110#2, 210# 2, 310#2 and 410#2) may be a DC/DC converter that converts the level of DC power, and the third converters 110#3, 210#3, 310#3 and 410#3 are , it may be an AC/DC converter that converts AC power to DC power.

* Each of the one or more first power conversion devices 110, 210, 310 and 410 may include an opening/closing means for opening and closing a connection at each of the front and rear ends.

The opening/closing means is provided at each of the input and output terminals of the one or more first power conversion devices 110, 210, 310 and 410, respectively, in the one or more first power conversion devices 110, 210, 310 and 410 It may be a switch that controls input/output power.

Here, the opening/closing means provided at the input terminal may be a circuit breaker that detects overcurrent and blocks the circuit.

More specifically, the first converters 110#1, 210#1, 310#1 and 410 receiving AC power from the first AC power source 10#1 and the second AC power source 10#3 #1) and an input terminal of the third converter 110#3, 210#3, 310#3 and 410#3 may be provided with an AC Air Circuit Breaker (ACB), and the battery power supply 10 A molded circuit breaker (MCCB) may be provided at input terminals of the second converters 110#2, 210#2, 310#2, and 410#2 receiving DC power from #2).

The opening/closing means may open and close the connection of the one or more first power converters 110, 210, 310 and 410 according to the operation of the one or more first power converters 110, 210, 310 and 410 .

For example, when power is not supplied from the one or more power supply sources 10 , the opening/closing means provided at each of the input terminal and the output terminal may be opened to separate the connection of the corresponding converter.

The one or more first power conversion devices 110 , 210 , 310 and 410 may have the output terminal connected to one power terminal O1 , O2 , O3 and O4 .

That is, the one or more first power conversion devices (110, 210, 310 and 410), the output terminal is commonly connected to the power terminal (O1, O2, O3 and O4), the one or more first power conversion device The DC power converted at (110, 210, 310 and 410) may flow.

Accordingly, the power supply terminal (O1, O2, O3 and O4), the output terminal of the at least one first power conversion device (110, 210, 310 and 410) is connected in common, the at least one first power conversion device The DC power output from 110 , 210 , 310 and 410 may be a circuit through which it flows.

The power terminals O1 , O2 , O3 and O4 may be connected to input terminals of the second power converters 120 , 220 , 320 and 420 .

The power terminals O1 , O2 , O3 and O4 may be connected to any two power terminals O1 to O4 among the power terminals of the other power panel 100 , 200 , 300 or 400 .

The power supply terminals O1, O2, O3 and O4 are connected to the input terminals of each of the second power converters 120, 220, 320 and 420, and transmit the DC power to the other power supply panels 100, 200, 300 Or 400), or it may be transmitted to the second power converter (120, 220, 320 and 420).

The power terminals O1 , O2 , O3 and O4 may be connected to any two circuit breakers among the plurality of circuit breakers 130 .

That is, the power terminals O1 , O2 , O3 and O4 may be disconnected by any two circuit breakers connected to the power terminals O1 , O2 , O3 and O4 .

Through this, the DC power delivered from the power terminals O1, O2, O3 and O4 may be controlled by a circuit breaker connected to the power terminals O1, O2, O3 and O4.

As such, the power terminals O1, O2, O3 and O4 to which the output terminals of the one or more first power converters 110, 210, 310 and 410 are commonly connected are the second power converters 120, 220, 320 and By being connected to the input terminal of 420), the DC power converted and output by the one or more first power converters 110, 210, 310 and 410 through the power terminals O1, O2, O3 and O4 is transmitted. can be done

The DC power converted and output from the one or more first power converters 110 , 210 , 310 and 410 may be transmitted to the second power converter 120 , 220 , 320 and 420 .

* The one or more first power converters (110, 210, 310 and 410), the first to third converters (110#1 to 110#3, 210#1 to 210#3, 310#1 to 310) #3 and any one of 410#1 to 410#3) may be operated to supply the DC power to the second power converter 120 , 220 , 320 and 420 .

The plurality of power boards 100, 200, 300 and 400 are converters 110#1 to #3, 210# for supplying the DC power to the second power converters 120, 220, 320 and 420. When the power supply of 1 to #3, 310#1 to #3, and 410#1 to #3 is stopped, the converters 110#1 to #3, 210#1 to #3, 310#1 to # 3 and 410#1 to #3), the DC power may be supplied to the second power converters 120, 220, 320 and 420 through other converters.

The one or more first power converters (110, 210, 310 and 410), the second power converter (120, 220, 320 and 420) the converter for supplying the DC power to the converter (110#1 to #3) , 210#1 to #3, 310#1 to #3, and 410#1 to #3) When the power supply is stopped, the converters 110#1 to #3, 210#1 to #3, 310# While the 1 to #3 and 410#1 to #3 are switched to the other converter, the converters 110#2, 210#2, 310#2 and The DC power may be supplied to the second power converters 120, 220, 320 and 420 through 410#2).

Here, when the power supply of the converters 110#1 to #3, 210#1 to #3, 310#1 to #3, and 410#1 to #3 is stopped, the converter 110#1 to #3, 210#1 to #3, 310#1 to #3 and 410#1 to #3), the converters 110#1 to #3, 210#1 to #3, 310#1 to #3 And 410#1 to #3) may be a case in which an abnormal state is detected in any one or more of the connected supply source and the rating of the DC power supply.

For example, the first converter (110#1, 210#1, 310#1, and 410#1) connected to the first AC power supply (10#1) is the second power converter (120, 220, 320) and 420) while supplying the DC power, when the rating of the DC power output from the first converters 110#1, 210#1, 310#1 and 410#1 is reduced below a certain standard , the third converter (110#3, 210#3, 310#3 and 410#3) which is another converter other than the first converter (110#1, 210#1, 310#1 and 410#1) may supply the DC power to the second power converter 120 .

In this case, the shopping mall one or more first power conversion devices 110, 210, 310 and 410, the first conversion device (110#1, 210#1, 310#1 and 410#1) is the third conversion device While switching to (110#3, 210#3, 310#3 and 410#3), the second converter connected to the battery power supply (10#2) (110#2, 210#2, 310#2, and The DC power may be supplied to the second power converters 120, 220, 320 and 420 through 410#2).

That is, the second converters 110#2, 210#2, 310#2 and 410#2 connected to the battery power source 10#2, the second power converters 120, 220, 320 and 420 When the supply of the DC power to ) is stopped, the DC power may be supplied to the second power converters 120, 220, 320 and 420 until the supply of the DC power is switched and restored. .

The second power conversion device (120, 220, 320 and 420), may be made of a plurality.

The second power conversion devices 120 , 220 , 320 and 420 are devices that convert the supplied DC power into the driving power, and may be, for example, an inverter.

The second power conversion device (120, 220, 320 and 420), when the load is a load driven by AC power, the one or more first power conversion devices (110, 210, 310 and 410) received from the DC It may be an inverter that converts power into AC driving power.

The second power conversion device (120, 220, 320 and 420), when the load is a load driven by DC power, the one or more first power conversion devices (110, 210, 310 and 410) received from the DC It may be an inverter that converts power into DC driving power.

The second power conversion device 120 , 220 , 320 and 420 may be provided in a number corresponding to the load 20 .

The load 20 may be formed in plurality.

The second power conversion device (120, 220, 320 and 420), corresponding to the load (20) three or more inverters (120#1 to #3, 220#1 to #3, 320#1 to #3) and 420#1 to #3).

Each of the second power converters 120 , 220 , 320 and 420 may be connected to each of the loads 20 to supply the driving power to the connected loads.

Each of the second power converters 120, 220, 320 and 420 may include an opening/closing means for opening and closing a connection at the front end.

The opening/closing means is provided at each input end of the second power conversion device 120, 220, 320 and 420, and a switch for controlling the power input to the second power conversion device 120, 220, 320 and 420 can be

Here, the opening/closing means provided at the input terminal may be a circuit breaker that detects overcurrent and blocks the circuit.

The driving power converted and output by the second power converters 120 , 220 , 320 and 420 may be transmitted to each of the loads 20 .

Here, the load 20 may include an electric motor (M) load.

Each of the plurality of power boards 100 , 200 , 300 , and 400 may be connected to each of the power terminals O1 to O4 of two adjacent power boards in which the power terminals O1 to O4 are other power boards.

The plurality of power boards 100, 200, 300 and 400 is provided between the power terminals O1 to O4 of one power panel and the power terminals O1 to O4 of two neighboring power boards, respectively, the plurality of circuit breakers ( 130) may be respectively disposed.

Power terminals O1 to O4 of each of the plurality of power supply panels 100 , 200 , 300 and 400 may be connected to the plurality of circuit breakers 130 - 130a to 130d.

In each of the plurality of power boards 100 , 200 , 300 and 400 , the power terminals O1 to O4 from which the DC power is output may be connected to any two circuit breakers among the plurality of circuit breakers 130 .

That is, the power terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 and 400 may be connected to two circuit breakers.

For example, when the plurality of power boards 100 , 200 , 300 and 400 are four as shown in FIG. 1 , the first power board 100 includes the first circuit breaker 130a and the second circuit breaker 130b and connected, the second power panel 200 is connected to the second circuit breaker 130b and the fourth circuit breaker 130d, and the third power panel 300 is connected to the first circuit breaker 130a and the third circuit breaker 130c. ), and the fourth power panel 400 may be connected to the third circuit breaker 130c and the fourth circuit breaker 130d.

Accordingly, each of the plurality of circuit breakers 130 may be connected to two power boards.

For example, the first circuit breaker 130a is connected to the first power panel 100 and the third power panel 300 , and the second circuit breaker 130b is connected to the first power panel 100 and the third power panel 300 . 2 is connected to the power panel 200 , the third circuit breaker 130c is connected to the third power panel 300 and the fourth power panel 400 , and the fourth circuit breaker 130d is connected to the second It may be connected to the power supply panel 200 and the fourth power panel 400 .

In the plurality of power boards 100 , 200 , 300 and 400 , a power end of one power board may be connected to each of the power ends of the other two power boards.

That is, the plurality of power boards 100 , 200 , 300 and 400 may be connected to each of the other two power boards.

For example, the first power panel 100 is connected to the third power panel 300 through the first circuit breaker 130a, and the second power panel 200 through the second circuit breaker 130b. and may be connected to each of the second and third power panels 200 and 300 .

In addition, the second power panel 200 is connected to the first power panel 100 through the second circuit breaker 130b, and the third power panel 300 through the fourth circuit breaker 130d. and may be connected to each of the first and fourth power panels 100 and 400 .

In addition, the third power panel 300 is connected to the first power panel 100 through the first circuit breaker 130a, and the fourth power panel 400 through the third circuit breaker 130c. and may be connected to each of the first and fourth power panels 100 and 400 .

In addition, the fourth power panel 400 is connected to the third power panel 300 through the third circuit breaker 130c, and the second power panel 200 through the fourth circuit breaker 130d. and may be connected to each of the second and third power panels 200 and 300 .

The plurality of circuit breakers 130 connected to the power terminals O1 to O4 may be DC circuit breakers that cut off DC power.

Each of the power terminals O1 to O4 may be connected to any two of the plurality of circuit breakers 130 .

Each of the plurality of power boards 100 , 200 , 300 and 400 includes a first power end corresponding to one end of the power end and a second power end corresponding to the other end of the power end, and the plurality of circuit breakers Reference numeral 130 is disposed between the two power boards to connect or disconnect the first power end of the power board of one side and the second power end of the power board of the other side.

The first power terminal and the second power terminal may be power terminals from which the power terminals of the plurality of power boards 100 , 200 , 300 and 400 are extended.

The first power end and the second power end extend from the power ends of the plurality of power boards 100 , 200 , 300 and 400 to the outside of the plurality of power boards 100 , 200 , 300 and 400 . It may be a power terminal connected to the plurality of circuit breakers 130 in the .

That is, the first power terminal and the second power terminal may correspond to power ports of the plurality of power boards 100 , 200 , 300 and 400 .

Accordingly, each of the plurality of power boards 100 , 200 , 300 and 400 may be provided with two power ports of the first and second power terminals.

In this case, the plurality of circuit breakers 130 may be disposed between the two power boards, respectively, to connect or disconnect the first power terminal of one power board and the second power terminal of the other power board.

That is, each of the plurality of circuit breakers 130 is disposed between the first power end of the power panel of one side and the second power end of the power panel of the other side, and each of the first power end and the second power end of the two power panel on both sides and can be connected

Accordingly, each of the plurality of circuit breakers 130 may be connected to a first power terminal of any one power panel on one side, and each second power terminal of a power panel adjacent to any one power panel on the other side.

Accordingly, each of the plurality of power boards 100 , 200 , 300 and 400 is connected to two power boards from both sides, respectively, to form an inner-loop connection structure between the plurality of power boards 100 , 200 , 300 and 400 . can be formed

The plurality of circuit breakers 130 is provided in each of the power paths between power terminals of two adjacent power panels among the power terminals O1 to O4, and intermittently controls the connection between the plurality of power panels 100 , 200 , 300 and 400 . can do.

The plurality of circuit breakers 130 is the power terminal ( Two neighboring power terminals among O1 to O4) may be provided in each of the circuits connected to each other.

That is, the plurality of circuit breakers 130 may be provided between the power terminals O1 to O4 to intercept the connection between the plurality of power boards 100 , 200 , 300 and 400 .

According to this, the plurality of power boards 100, 200, 300 and 400 are connected to each other through the power terminals O1 to O4, and by opening and closing the plurality of circuit breakers 130, the plurality of power boards ( 100, 200, 300 and 400) may be intercepted.

The plurality of circuit breakers 130 disposed between the power terminals O1 to O4 to connect or intermittence between the power terminals O1 to O4 may be a DC-only circuit breaker (MCCB).

The plurality of circuit breakers 130 open and close differently depending on the state of at least one of the DC power supply, the driving power supply, the one or more first power conversion devices 110 , 210 , 310 and 410 , and the load 20 . Thus, the DC power may be connected or intermittent between each of the power terminals O1 to O4.

Here, the at least one state is, when the DC power is changed from the initial state, when the driving power is changed from the initial state, the power of the one or more first power conversion devices 110 , 210 , 310 and 410 . It may be at least one of a case in which the supply state is changed and a case in which the driving state of the load 20 is changed.

For example, when the DC power or the driving power is less than the reference rating, the one or more first power converters (110, 210, 310 and 410) a failure / accident occurs when the power supply state is changed, or It may be the case that the driving power supplied to the load 20 is reduced and the driving state of the load 20 is changed.

The plurality of power boards 100 , 200 , 300 and 400 includes the plurality of circuit breakers 130 disposed between the power terminals O1 to O4 and the plurality of power boards 100 , 200 , 300 and 400 . By connecting or separating each of the power supply panels adjacent to each other, the connection between the power terminals O1 to O4 may be formed in a ring structure.

For example, the power terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 and 400 are connected, and the DC power is transferred between the plurality of power boards 100 , 200 , 300 and 400 . This can be done.

Accordingly, the plurality of power boards 100 , 200 , 300 and 400 may be connected in a loop shape.

That is, the power terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 and 400 are connected in the loop form, so that each of the plurality of power boards 100 , 200 , 300 and 400 is The power terminals O1 to O4 may be connected in a loop form.

The plurality of power boards 100 , 200 , 300 and 400 includes power terminals O1 to O4 of any one of the plurality of power boards 100 , 200 , 300 and 400 and power terminals of two adjacent power boards. (O1 to O4) may consist of a number of converters each connected.

For example, a first circuit in which the first power panel 100 and the third power panel 100 are connected, a second circuit in which the first power panel 100 and the second power panel 200 are connected, A third circuit to which the third power panel 300 and the fourth power panel 400 are connected, and a fourth circuit to which the second power panel 200 and the fourth power panel 400 are connected. and the first to fourth converters may be formed in a loop shape.

Here, the first circuit breaker 130a is connected to the first circuit breaker, the second circuit breaker 130b is connected to the second circuit breaker, the third circuit breaker 130c is connected to the third circuit breaker, and the fourth circuit breaker 130d is connected to the third circuit breaker 130d. ) may be provided in each of the fourth converters to control opening and closing of the first to fourth converters, respectively.

Accordingly, the plurality of circuit breakers 130 may intermittently intermittently connect the plurality of power boards 100 , 200 , 300 and 400 in which a plurality of converters are formed in a loop shape.

The plurality of circuit breakers 130 may be provided in a number corresponding to the plurality of power boards 100 , 200 , 300 and 400 .

The plurality of circuit breakers 130 may be provided in the number of N when the number of the plurality of power boards 100 , 200 , 300 and 400 is N.

For example, when there are four power supply panels 100 , 200 , 300 , and 400 , that is, when N is 4, four power supply panels may be provided.

Each of the plurality of circuit breakers 130 may be open normally and closed during operation to intercept the connection between the plurality of power boards 100 , 200 , 300 and 400 .

Accordingly, each of the plurality of power boards 100 , 200 , 300 and 400 may be connected to another power board through opening and closing of each of the plurality of circuit breakers 130 .

The plurality of circuit breakers 130 are closed when the DC power is connected between the plurality of power boards 100, 200, 300 and 400, and the circuit breaker 130 is closed between the plurality of power boards 100, 200, 300 and 400. It may open when the DC power supply is interrupted.

A form in which each of the plurality of power boards 100 , 200 , 300 and 400 is connected to another power board through the plurality of circuit breakers 130 may be as shown in FIG. 1 .

The plurality of power boards 100 , 200 , 300 and 400 are, as shown in FIG. 1 , the first power board 100 , the second power board 200 , and the third power board 300 . and the power terminals O1 to O4 of each of the fourth power board 400 are connected in a ring structure, and the power terminals O1 to O4 of each of the plurality of power boards 100 , 200 , 300 and 400 . Each of the first to fourth circuit breakers 130a to 130d may be provided therebetween.

The connection form will be described in more detail with reference to FIG. 1 as follows.

The connection form will be described in more detail with reference to FIG. 1 as follows.

The first power end O1 of the first power panel 100 is a second power end O2 of the second power panel 200 and the third power end of the third power panel 300 adjacent to each other. Connected to (O3), the second circuit breaker 130b is provided between the first and second power terminals O1 and O2, and the second circuit breaker 130b is provided between the first and third power terminals O1 and O3. A first circuit breaker 130a is provided, and the connection between the first and second power supply panels 100 and 200 is intercepted by the second circuit breaker 130b, and the first and third power supply panels 100 and 300 are intermittent. The connection between them may be interrupted by the first circuit breaker 130a.

The second power supply terminal O2 of the second power supply panel 200 is the first power supply terminal O1 of the adjacent first power supply panel 100 and the fourth power supply stage of the fourth power supply panel 400 . It is connected to the power supply terminal O4, the second circuit breaker 130b is provided between the first and second power terminals O1 and O2, and between the second and fourth power terminals O2 and O4. The fourth circuit breaker 130d is provided, and the connection between the first and second power panels 100 and 200 is interrupted by the second circuit breaker 130b, and the second and fourth power supply panels 200 and 200 and 400) may be intercepted by the fourth circuit breaker 130d.

The third power supply terminal O3 of the third power supply panel 300 is the first power supply terminal O1 of the first power supply panel 100 and a fourth power supply stage of the fourth power supply panel 400 adjacent to each other. It is connected to the power supply terminal O4, and the first circuit breaker 130a is provided between the first and third power terminals O1 and O3, and between the third and fourth power terminals O3 and O4. The third circuit breaker 130c is provided, so that the connection between the first and third power panels 100 and 300 is intercepted by the first circuit breaker 130a, and the third and fourth power supply panels 300 and 300 and 400) may be intercepted by the third circuit breaker 130c.

The fourth power supply terminal O4 of the fourth power supply panel 400 is a second power supply terminal O2 of the second power supply panel 200 adjacent thereto and the third power supply terminal of the third power supply panel 300 . It is connected to the terminal O3, the fourth circuit breaker 130d is provided between the second and fourth power terminals O2 and O4, and the third and fourth power terminals O3 and O4 are provided between the A third circuit breaker 130c is provided, and the connection between the second and fourth power panels 200 and 400 is interrupted by the fourth circuit breaker 130d, and the third and fourth power supply panels 300 and 400 are intermittent. ) may be intercepted by the third circuit breaker 130c.

As the first to fourth power boards 100, 200, 300 and 400 are connected in this way, the power terminals O1 to O4 of the plurality of power boards 100, 200, 300 and 400 are looped. form can be connected.

In this way, each of the plurality of power boards 100, 200, 300 and 400 is connected to a neighboring power board, so that the DC power can be transferred between the plurality of power boards 100, 200, 300 and 400. there is.

That is, each of the plurality of power boards 100 , 200 , 300 and 400 is connected to a neighboring power board, and as shown in FIG. 1 , the power terminals of the plurality of power boards 100 , 200 , 300 and 400 ( As O1 to O4 are connected in a loop form, the first power panel 100 is connected to the second power panel 200 and the third power panel 300 to be connected to the second power panel 200 . ) or the third power panel 300 and the DC power are supplied and the second power panel 200 is connected to the first power panel 100 and the fourth power panel 400 to provide the The first power panel 100 or the fourth power panel 400 and the DC power are supplied and supplied, and the third power panel 300 includes the first power panel 100 and the fourth power panel ( 400) to receive and supply the first power panel 100 or the fourth power panel 400 and the DC power, and the fourth power panel 400 includes the second power panel 200 and It may be connected to the third power panel 300 to supply and receive the second power panel 200 or the third power panel 300 and the DC power.

The plurality of power boards 100 , 200 , 300 and 400 connected in a loop form as described above are interposed between the plurality of power boards 100 , 200 , 300 and 400 by opening and closing each of the plurality of circuit breakers 130 . The DC power may be supplied and supplied.

For example, when the first circuit breaker 130a connected to a circuit between the first power panel 100 and the third power panel 300 is closed, the first power panel 100 and the third power source The supply of the DC power between the panels 300 may be made, and the second circuit breaker 130b connected to the circuit between the first power panel 100 and the second power panel 200 is closed. In this case, the DC power may be supplied and supplied between the first power panel 100 and the second power panel 200 , and the third power panel 300 and the fourth power panel 400 . ), when the third circuit breaker 130c connected to the circuit between When the fourth circuit breaker 130d connected to a circuit between the second power panel 200 and the fourth power panel 400 is closed, the second power panel 200 and the fourth power panel ( 400), the DC power may be supplied and supplied.

Each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 included in each and the second power converter 120, 220, 320 and 420) can be controlled and monitored.

Each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 included in each and the second power converter 120, 220, Opening and closing of each of the first to fourth circuit breakers 130a to 130d may be controlled according to the results of controlling and monitoring the operations 320 and 420 .

Each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 included in each and the second power converter 120, 220, By controlling and monitoring the operations 320 and 420 , states of the DC power supply and the driving power may be detected.

Each of the plurality of power boards 100 , 200 , 300 , and 400 may receive power from any one of the one or more power supply sources 10 and convert it into the DC power.

That is, each of the plurality of power boards 100 , 200 , 300 and 400 may be selectively supplied with power from any one of the one or more power supply sources 10 .

Each of the plurality of power supply panels 100 , 200 , 300 , and 400 may receive power from any one of the one or more power supply sources 10 and convert it into the DC power according to a preset supply standard.

The supply criterion may be a criterion for power supply priority of the one or more power supply sources 10 .

The plurality of power boards (100, 200, 300 and 400) select any one of the one or more first power conversion devices (110, 210, 310 and 410) according to the state of the one or more power supply sources (10) Thus, it is possible to transfer the DC power to the second power converter (120, 220, 320 and 420) with the selected converter.

That is, each of the plurality of power boards 100 , 200 , 300 and 400 is the second power converter 120 , 220 , 320 and 420) may be supplied with the DC power.

The plurality of power supply panels 100, 200, 300 and 400, the conversion device and the conversion device transmitting the DC power to the second power conversion devices 120, 220, 320 and 420 for converting the driving power When an abnormality occurs in one or more of the power supply sources corresponding to , the DC power may be transferred to the second power converter 120 , 220 , 320 and 420 by a converter other than the converter.

That is, each of the plurality of power boards 100 , 200 , 300 and 400 , when an abnormality occurs in any one or more of the converter transmitting the DC power and the power supply corresponding to the converter, other than the converter By switching to another converter, the DC power may be transferred to the second power converter 120 , 220 , 320 and 420 as the converted converter.

The plurality of power boards (100, 200, 300, and 400), the second power converter (120, 220, 320 and 420) of the power supply corresponding to the converter and the converter that is delivering the DC power to the converter When any one or more abnormalities occur, the converter other than the converter to deliver the DC power to the second power converter (120, 220, 320 and 420), the power supply and converter that are supplying power can be switched

The plurality of circuit breakers (130, 230, 330 and 430), when the supply of at least one of the plurality of power panels (100, 200, 300, and 400) is stopped, the power supply is stopped and the power supply panel and the interruption A circuit breaker between the closed power panel and the adjacent power panel may be closed to connect the stopped power panel and the adjacent power panel, so that the DC power may be supplied from the adjacent power panel to the interrupted power panel.

In this case, the stopped power supply panel is the power supply is stopped, and the DC power is supplied from the converter connected to the battery power source (B) until the DC power conducted from the adjacent power supply panel is supplied. can

The system 1000 as described above monitors the state of at least one of the plurality of power boards 100, 200, 300 and 400 and the plurality of circuit breakers 130, and according to the monitoring result, the plurality of power boards ( 100 , 200 , 300 , and 400 ) and a control device 600 for controlling at least one of the plurality of circuit breakers 130 may be further included.

That is, the plurality of power supply panels 100 , 200 , 300 and 400 may be controlled by the control device 600 .

Each of the plurality of power boards 100 , 200 , 300 , and 400 may communicate with the control device 600 and operate according to a result of communication with the control device 600 .

For example, a control command may be received from the control device 600 to operate according to the control command, or state information may be transmitted to the control device 600 .

Each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 included in each and the second power converter 120, 220, According to the result of controlling and monitoring the operations 320 and 420 , the control device 600 may request opening/closing control of each of the first to fourth circuit breakers 130a to 130d.

Each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 included in each and the second power converter 120, 220, The results of controlling and monitoring the operations 320 and 420 may be transmitted to the control device 600 .

Each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 included in each and the second power converter 120, 220, By controlling and monitoring the operations 320 and 420 , the result of detecting the states of the DC power and the driving power may be transmitted to the control device 600 .

Here, each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 and the second power converter 120, 220, 320 and 420) and a control unit for monitoring an abnormal state of at least one of the one or more power supply sources 10, the one or more first power conversion devices 110, the DC power source, the driving power source, and the load 20 (140, 240, 340 and 440) may be further included.

Here, each of the plurality of power boards 100, 200, 300 and 400, the one or more first power converters 110, 210, 310 and 410 and the second power converter 120, 220, 320 and 420) and a control unit for monitoring an abnormal state of at least one of the one or more power supply sources 10, the one or more first power conversion devices 110, the DC power source, the driving power source, and the load 20 (140, 240, 340 and 440) may be further included.

The control units 140 , 240 , 340 and 440 may be a central control device of each of the plurality of power supply panels 100 , 200 , 300 and 400 .

The controllers 140 , 240 , 340 and 440 may include a plurality of control means for controlling the plurality of power panels 100 , 200 , 300 and 400 .

The controllers 140 , 240 , 340 and 440 may further include a plurality of electronic devices for performing functions of the plurality of power panels 100 , 200 , 300 and 400 .

For example, a storage means for storing software/applications/programs for performing and controlling functions of the plurality of power supply panels 100, 200, 300 and 400, dedicated control means including the storage means, communication means, display means, and It may include one or more of the input means.

The controllers 140 , 240 , 340 and 440 may be controlled by the controller 600 .

The control unit (140, 240, 340 and 440), the one or more first power converter (110, 210, 310 and 410) and the second power converter (120, 220, 320 and 420) to control the PLC (Programmable Logic Controller) may be included.

The control unit (140, 240, 340 and 440), the one or more first power converter (110, 210, 310 and 410) and the second power converter (120, 220, 320 and 420) monitoring the state of the Thus, it is possible to control the operation of the one or more first power converter (110, 210, 310 and 410) and the second power converter (120, 220, 320 and 420) based on the monitored result.

The control unit (140, 240, 340 and 440) is also based on the state of the one or more power supply source (10) and the load (20) the one or more first power conversion devices (110, 210, 310 and 410) And it is possible to control the operation of the second power converter (120, 220, 320 and 420).

The control unit 140 , 240 , 340 and 440 may control the conversion and supply of the DC power by controlling the operation of each of the one or more first power conversion devices 110 , 210 , 310 and 410 .

The control unit 140 , 240 , 340 and 440 may also control the opening and closing of each of the opening and closing means included in the one or more first power conversion devices 110 , 210 , 310 and 410 .

The control unit 140 , 240 , 340 , and 440 may control the conversion and supply of the driving power by controlling the operation of each of the second power conversion devices 120 , 220 , 320 and 420 .

The control unit 140 , 240 , 340 and 440 may also control opening and closing of each of the opening and closing means included in the second power conversion device 120 , 220 , 320 and 420 .

The control unit 140, 240, 340 and 440 also performs communication with any one or more of an external communication device and the control device 600, and the one or more first power conversion devices 110 according to the communication performance result. , 210 , 310 and 410 ) and the second power converter 120 , 220 , 320 and 420 can be controlled.

For example, the one or more first power conversion devices 110, 210, 310 and 410 and the second power conversion devices 120, 220, 320 and 420 from the control device 600 for the operation control of any one or more Receive a control command, the one or more of the first power converter (110, 210, 310 and 410) and the second power converter (120, 220, 320 and 420) in accordance with the control command any one or more of the operation can be controlled

The control unit 140 , 240 , 340 , and 440 may control to receive power from any one of the one or more power supply sources 10 and convert it into the DC power.

That is, the controllers 140 , 240 , 340 , and 440 may control to selectively receive power from any one of the one or more power supply sources 10 .

The controllers 140 , 240 , 340 , and 440 may control to receive power from any one of the one or more power sources 10 and convert it into the DC power according to a preset supply standard.

The supply criterion may be a criterion for power supply priority of the one or more power supply sources 10 .

For example, the first AC power source 10#1, the second AC power source 10#3, and the battery power source 10#3 may be set in the order.

When the supply standard is the same, the control units 140 , 240 , 340 and 440 , the first AC power source 10#1, the second AC power source 10#3, and the battery power source 10#3 It can be controlled to receive power in order.

The control unit 140, 240, 340 and 440, when receiving power from the first AC power source 10#1, the first conversion device 110# connected to the first AC power source 10#1 1, 210#1, 310#1, and 410#1) can be controlled.

In this case, the control unit (140, 240, 340 and 440), the opening and closing means of the first converter (110#1, 210#1, 310#1 and 410#1) is closed, the second converter (110#2, 210#2, 310#2 and 410#2) and the opening/closing means of the third converters 110#3, 210#3, 310#3, and 410#3 are opened, so that the first The converters 110#1, 210#1, 310#1 and 410#1 are connected, and the second converters 110#2, 210#2, 310#2 and 410#2 and the third converter are connected. (110#3, 210#3, 310#3 and 410#3) can be separated.

The control unit 140, 240, 340 and 440, when receiving power from the second AC power source 10#3, the third converter 110# connected to the second AC power source 10#3 2, 210#2, 310#2, and 410#2) can be controlled.

In this case, the control unit (140, 240, 340 and 440), the opening and closing means of the third converter (110#3, 210#3, 310#3 and 410#3) is closed, the first converter (110#1, 210#1, 310#1 and 410#1) and the opening/closing means of the second converters 110#2, 210#2, 310#2 and 410#2 are opened, so that the third The converters 110#3, 210#3, 310#3 and 410#3 are connected and the first converters 110#1, 210#1, 310#1 and 410#1 and the second converter are connected. (110#2, 210#2, 310#2 and 410#2) can be separated.

The control unit 140, 240, 340 and 440, when receiving power from the battery power source 10#2, the second converter connected to the battery power source 10#2 (110#2, 210#) 2, 310#2, and 410#2) can be controlled.

In this case, the control unit (140, 240, 340 and 440), the opening and closing means of the second converter (110#2, 210#2, 310#2 and 410#2) is closed, the first converter (110#1, 210#1, 310#1, and 410#1) and the opening/closing means of the third converters 110#3, 210#3, 310#3 and 410#3 are opened, so that the second Only the converters 110#2, 210#2, 310#2 and 410#2 are connected, and the first converters 110#1, 210#1, 310#1 and 410#1 and the third converter are connected. (110#3, 210#3, 310#3 and 410#3) are separable.

The control unit 140 , 240 , 340 and 440 selects any one of the one or more first power conversion devices 110 , 210 , 310 and 410 according to the state of the one or more power supply sources 10 , the It can be controlled to transmit the DC power to the second power converter (120, 220, 320 and 420).

That is, the control unit (140, 240, 340 and 440), the one or more of the first power conversion device (110, 210, 310 and 410) by converting the DC power through the selected conversion device of the second power conversion device It can be controlled to transmit to 120 .

For example, when an abnormality occurs in the first AC power source 10#1 and the second AC power source 10#3 among the one or more power supply sources 10, the second AC power source connected to the battery power source 10#2 2 By selecting the converters 110#2, 210#2, 310#2 and 410#2, the second converters 110#2, 210#2, 310#2 and 410#2 are powered by the battery. Power is supplied from (10#2) and converted into the DC power, and the second power converter 120, 220, 320 and 420 may be controlled to transmit the DC power to each.

The control unit (140, 240, 340 and 440), the conversion device (110, 210, 310 and 410) and the conversion device for transmitting the DC power to the second power conversion device (120, 220, 320 and 420) (110, 210, 310 and 410) When any one or more of the power supply source 10 corresponding to an abnormality occurs, other converters 110, 210, 310 and 410) can be controlled to deliver the DC power to the second power converter (120, 220, 320 and 420).

The control unit (140, 240, 340 and 440), the conversion device (110, 210, 310 and 410) and the conversion device for transmitting the DC power to the second power conversion device (120, 220, 320 and 420) (110, 210, 310 and 410) When any one or more of the power supply source 10 corresponding to an abnormality occurs, other converters 110, 210, 310 and 410) to transfer the DC power to the second power converter (120, 220, 320 and 420), to switch the power supply source 10 and the converter (110, 210, 310 and 410) that is supplying power can

For example, while receiving power from the first AC power supply 10#1 and converting the DC power to the first converters 110#1, 210#1, 310#1 and 410#1, When the first converters 110#1, 210#1, 310#1, and 410#1 fail, or when shutdown occurs in the first AC power supply 10#1, the second AC power supply (10#3) receiving power from the third converter (110#3, 210#3, 310#3 and 410#3) converts the DC power to the second power converter (120, 220, To transfer the DC power to 320 and 420, the first AC power supply 10#1 being supplied with power is converted to the second AC power source 10#3, and the first converter 110#1 , 210#1, 310#1, and 410#1) may be converted into the third converters 110#3, 210#3, 310#3, and 410#3.

As such, the control unit 140, 240, 340 and 440 for controlling the one or more first power converters 110, 210, 310 and 410 and the second power converter 120, 220, 320 and 420 is , may request the control device 600 to supply and supply the DC power according to the state of the DC power or the driving power.

For example, when the size of the driving power is smaller than the required size of the load 20 or when the DC power is insufficient, the plurality of circuit breakers 130 are closed to close the other power supply panels 100 , 200 , 300 . Alternatively, the control device 600 may be requested to receive the DC power from 400).

Alternatively, when the size of the driving power is larger than the required size of the load 20, or when the DC power is available, the plurality of circuit breakers 130 are closed to the other power supply panels 100, 200, 300 or 400) may be requested to the control device 600 to supply the DC power.

In the opposite case, a failure occurs in the one or more first power conversion devices 110 , 210 , 310 and 410 or the second power conversion devices 120 , 220 , 320 and 420 , and the power terminal O1 to O4), or when an abnormality occurs in the one or more power supply sources 10 or the load 20 and the fault current flows to the power terminals O1 to O4, the plurality of circuit breakers By opening 130 , a request may be made to the control device 600 to prevent the fault current from being supplied to the other power supply panel 100 , 200 , 300 or 400 .

The control unit 140 , 240 , 340 , and 440 closes the plurality of circuit breakers 130 when an abnormality occurs in the one or more power supply sources 10 , and the other connected to the power terminals O1 to O4 Control may be requested from the control device 600 to receive the DC power from the power panel 100 , 200 , 300 or 400 .

The control unit (140, 240, 340, and 440), when an abnormality occurs in the other power panel (100, 200, 300, or 400) connected to the power terminals (O1 to O4), the plurality of circuit breakers (130) By closing, control may be requested from the control device 600 to supply DC power to the other power panel 100 , 200 , 300 or 400 .

The control unit (140, 240, 340 and 440), when an abnormality occurs in the other power supply panel (100, 200, 300 or 400) connected to the power supply terminals (O1 to O4), the one or more power supply supply (10) Controlled to receive more power from any one, closing the plurality of circuit breakers 130, through the power supply terminals O1 to O4, control to supply more power through the power supply source 10 and the corresponding conversion Control may be requested from the control device 600 to supply the DC power converted by the devices 110 , 210 , 310 and 410 to the other power panel 100 , 200 , 300 or 400 .

The control device 600 may control the operation of the plurality of circuit breakers 130 to control supply and demand of the DC power.

For example, the plurality of circuit breakers 130 may be closed to supply the DC power between the plurality of power boards 100 , 200 , 300 and 400 , or control to supply the DC power.

The control device 600 communicates with each of the plurality of power boards 100, 200, 300 and 400, and based on the state information received from each of the plurality of power boards 100, 200, 300 and 400, Each of the plurality of power supply panels 100 , 200 , 300 and 400 may be controlled.

For example, according to the state information of the DC power and the driving power received from each of the plurality of power boards 100 , 200 , 300 and 400 , each of the plurality of power boards 100 , 200 , 300 and 400 . The conversion and supply of DC power and the conversion and supply of the driving power of each of the plurality of power boards 100 , 200 , 300 and 400 may be controlled.

The control device 600 communicates with each of the plurality of power boards 100, 200, 300 and 400, and based on the state information received from each of the plurality of power boards 100, 200, 300 and 400, It is possible to control conversion and supply of the driving power of each of the plurality of power boards 100 , 200 , 300 and 400 , or the plurality of circuit breakers 130 .

The control device 600 also detects the state of the one or more power supply sources 10 and the load 20, or the state of the one or more power supply sources 10 and the load 20 from an external communication means. Conversion and supply of the driving power of each of the plurality of power boards 100, 200, 300 and 400 based on the state of the one or more power supply sources 10 and the load 20 by receiving information about the Alternatively, the plurality of circuit breakers 130 may be controlled.

In this case, the control device 600 transmits a control command for converting and supplying the driving power of each of the plurality of power boards 100 , 200 , 300 and 400 , or controlling the plurality of circuit breakers 130 . A control unit 140 included in each of the plurality of power boards 100, 200, 300 and 400, or transmitted to each of the plurality of circuit breakers 130, and included in each of the plurality of power boards 100, 200, 300 and 400; Control according to the control command or opening/closing control of each of the plurality of circuit breakers 130 may be performed through 240 , 340 , and 440 .

For example, when an abnormality occurs in the entire system power supply (G) that is supplying power to the plurality of power panels (100, 200, 300 and 400), the power supply from the system power supply (G) is cut off In order to switch to another supply source, the plurality of power supply boards ( 100, 200, 300, and 400) transmitted to the control unit 140, 240, 340 and 440 included in each, each of the plurality of circuit breakers 130 is opened, the bypass power (P) or the battery power ( It can be controlled to receive power from B) to convert and supply the DC power.

The control device 600 may control opening and closing of the plurality of circuit breakers 130 to control the plurality of power supply panels 100 , 200 , 300 and 400 to receive the DC power.

The control device 600, when an abnormality occurs in any one or more of the plurality of power supply panels 100, 200, 300 and 400, any one of the abnormal power supply panel and the power supply panel adjacent to the abnormal power supply panel are connected By closing the circuit breaker of one circuit, it is possible to control the abnormal power supply panel to receive the DC power from the adjacent power supply panel.

That is, when an abnormality occurs in one or more of the plurality of power supply panels 100, 200, 300 and 400, the control device 600 closes any one of the circuit breakers 130 connected to the abnormal power supply panel. , the abnormal power supply panel may be controlled to receive the DC power from a neighboring power panel.

For example, when a failure occurs in the converter 110 of the first power board 100 among the plurality of power boards 100, 200, 300 and 400, the second power board 200 or the second power board 200 3 to supply the DC power converted by any one of the converters 210 or 310 of the power board 300 to the second power converter 120 of the first power board 100, the first power board ( 100) and the first circuit breaker 130a of the circuit to which the third power supply panel 300 is connected, or the second circuit breaker 130a of the circuit to which the first power supply panel 100 and the second power supply panel 200 are connected. Close (130b), cut off the one or more first power conversion devices 110 of the first power panel 100, the second power panel 200 or the third power panel 300 A control command for controlling to supply the DC power converted by any one of one or more first power converters 210 or 310 to the second power converter 120 of the first power board 100 is given as the first 1 power board 100 and the second power board 200 or the third power board 300, the first circuit breaker 130a, or the second circuit breaker 130b respectively, and the first circuit breaker ( 130a) or the second circuit breaker 130b is closed, and any one of the one or more first power converters 210 or 310 of the second power panel 200 or the third power panel 300 is the DC power may be controlled to be supplied to the second power converter 120 of the first power panel 100 .

That is, each of the plurality of power boards 100 , 200 , 300 , and 400 may supply the DC power to the load 20 of the abnormal power board when an abnormality occurs in an adjacent power board.

Here, the plurality of power boards 100 , 200 , 300 and 400 converts the DC power according to the state of the at least one power supply source 10 when the DC power is supplied to the abnormal power board 10 . By selecting any one of the one or more first power conversion devices 110 , 210 , 310 and 410 , it is possible to transmit the DC power to the abnormal power supply panel with the selected converter.

That is, when the plurality of power supply panels 100 , 200 , 300 and 400 supplies the DC power to the abnormal power supply panel, one converter selected according to the state of the one or more power supply units 10 is used. The DC power may be supplied to an abnormal power supply panel.

For example, when the second power board 200 supplies the DC power to the first power board 100 , among the one or more power sources 10 supplying power to the second power board 200 , the When the ratings of the grid power source (G) and the bypass power source (P) are lower than the reference rating, the second converter corresponding to the battery power source (B) to supply the DC power through the battery power source (B) By selecting (210#2), the selected second converter 210#2 converts the power supplied from the battery power B into the DC power to be delivered to the first power board 100 can

The control device 600, when an abnormality occurs in any one or more of the plurality of power supply panels 100, 200, 300 and 400, the circuit breaker 130 of the circuit to which the abnormal power supply panel and a plurality of adjacent power supply panels are connected By closing all of them, it is possible to control the abnormal power supply panel to receive the DC power from all of the adjacent power supply panels.

That is, when an abnormality occurs in any one or more of the plurality of power supply panels 100, 200, 300 and 400, the control device 600 closes all of the circuit breakers 130 connected to the abnormal power supply panel to close the The abnormal power supply panel may be controlled to receive the DC power from all of the neighboring power panels.

For example, when an abnormality occurs in the first power panel 100 , the second circuit breaker 130b and the third circuit breaker 130b for intermittent connection between the first power panel 100 and the adjacent second power panel 200 . By closing the first circuit breaker 130a that regulates the connection with the power panel 300, the first power panel 100 is adjacent to the second power panel 200 and the third power panel 300. The DC power may be supplied.

The control device 600 closes a plurality of circuit breakers 130 that intermittently intermittently connect the power panel closest to each of the abnormal power panel when there are a plurality of the abnormal power supply panel, so that each of the abnormal power supply panel is disconnected. It can be controlled to receive the DC power from each of the adjacent power panels.

That is, the control device 600 controls, when there are a plurality of abnormal power supply panels, each of a plurality of adjacent power supply panels adjacent to each of the abnormal power supply panels supplies the DC power to each of the abnormal power supply panels. can be

For example, when a failure occurs in the first power board 100 and the second power board 200 , the first power board 100 and the third power board 300 are connected to each other. By closing the circuit breaker 130a and the fourth circuit breaker 130d that regulates the connection between the second power panel 200 and the fourth power panel 400, the first power panel 100 is connected to the third The DC power may be supplied from the power panel 300 , and the second power panel 200 may be supplied with the DC power from the fourth power panel 400 .

As such, when an abnormality occurs in any one or more of the plurality of power supply panels 100, 200, 300, and 400, the circuit breaker 130 that controls the connection between the abnormal power supply panel and the neighboring power supply panel is closed, and the abnormality occurs By controlling the power board to receive the DC power from the neighboring power board, each of the plurality of power boards 100 , 200 , 300 and 400 may perform a UPS function.

Accordingly, the system 1000 operates the load 20 even when an unexpected abnormality occurs in the one or more power supply sources 10 , the plurality of power supply panels 100 , 200 , 300 and 400 , and the load 20 . ) can be continuously maintained, so that the operation of the load 20 can be maintained without interruption, an appropriate and active power supply response can be made to the occurrence of an abnormality, and the type of abnormal occurrence And regardless of the degree, the operation of the load 20 and the control of the system 1000 can be made stably.

An example of operation of the system 1000 as described above may be performed as shown in FIGS. 4 to 7 .

The operation example as shown in FIGS. 4 to 7 is an operation example when the system 1000 includes four power supply panels 100 , 200 , 300 and 400 , and the system 1000 includes the plurality of power panels 100 , 200 , 300 and 400 . The power supply panel 100, 200, 300, and 400 may include less than five, or five or more.

A preferred embodiment of the system 1000 may include four power supply panels 100, 200, 300 and 400 as shown in FIGS. 4 to 7, and hereinafter, the plurality of power supply panels 100 and 200 , 300 and 400) will be described by taking as an example four cases as shown in FIGS. 4 to 7 .

4 is a case in which each of the plurality of power boards 100 , 200 , 300 and 400 receives power from the grid power G among the one or more power sources 10 , in which case the bypass power P ) and the power supply from the battery power source (B) is cut off, and power is supplied through the grid power source (G) and converted in the order of the DC power and the driving power to be supplied to each of the loads (20) there is.

The operation example shown in FIG. 4 is a general operation in which power is supplied from the system power G, and the normal operation of the system 1000 may be performed as described above.

5 is a case in which each of the plurality of power boards 100 , 200 , 300 and 400 receives power from the bypass power source P among the one or more power sources 10 , and the system power supply G This may correspond to a case in which an abnormality occurs, in which case power supply from the grid power source (G) and the battery power source (B) is cut off, and the DC power supply is supplied through the bypass power source (P). and converted in the order of the driving power to be supplied to each of the loads 20 .

The operation example shown in FIG. 5 is a special operation in which power is supplied from the bypass power source P to operate, and the special operation of the system 1000 may be performed in this way.

6 is a case in which each of the plurality of power boards 100 , 200 , 300 and 400 receives power from the battery power B among the one or more power sources 10 , the system power G and the This may correspond to a case where an abnormality occurs in the bypass power P. In this case, the power supply from the grid power G and the bypass power P is cut off, and through the battery power B Power may be supplied and converted in the order of the DC power and the driving power to be supplied to each of the loads 20 .

The operation example shown in FIG. 6 is a case of a power failure operation in which power is supplied from the battery power source B, and the power failure operation of the system 1000 may be performed as described above.

7 is a case in which each of the plurality of power supply panels 100 , 200 , 300 and 400 receives power from the emergency power source A among the one or more power supply sources 10 , the system power supply G, and This may correspond to a case where an abnormality occurs in the bypass power source P and the battery power source B, and in this case, the power supply from the grid power G, the bypass power source P, and the battery power source B The power supply may be cut off, and the emergency power source A may directly supply the driving power to each of the loads 20 .

The operation example shown in FIG. 7 is an emergency operation in which power is supplied from the emergency power source A to operate, and the emergency operation of the system 1000 may be performed in this way.

In this way, the system 1000 may be operated by receiving power from the same power supply source for each of the plurality of power boards 100, 200, 300 and 400, or the plurality of power boards 100, 200, 300 and 400) may be operated by selectively receiving power from any one of the one or more power supply sources 10 .

For example, the first and second power boards 100 and 200 are operated by receiving power from the system power supply (G), and the third and fourth power boards (300 and 400) are the bypass power supply (P). ) and can be operated by receiving power from

In addition, each of the plurality of power supply panels 100 , 200 , 300 and 400 may be operated by receiving power from one or more power supply sources 10 .

For example, when an abnormality occurs in the first power panel 100 and the DC power is supplied from the second power panel 200 to the first power panel 100 , the second power panel 200 . The power supplied from the grid power (G) is converted into the DC power through the 2-1 converter 210#1 and delivered to each of the second power converters 220, and the bypass power ( P) is further supplied with power and converted into the DC power through the 2-3th converter 210#3, and the DC power converted by the 2-3th converter 210#3 is converted to the first It may be transmitted to each of the second power conversion device 120 of the power supply panel (100).

In this example, by closing the second circuit breaker 130b to which the first power panel 100 and the second power panel 200 are connected, the first power panel 100 and the second power source The panels 200 are connected to each other, so that the DC power can be supplied from the second power panel 200 to the first power panel 100 .

As described above, each of the plurality of power boards 100 , 200 , 300 and 400 operates by receiving power from one or more power supply sources 10 , thereby supplying power between the plurality of power boards 100 , 200 , 300 and 400 . That is, the UPS function may be performed between the plurality of power boards 100 , 200 , 300 and 400 .

The embodiment of the power supply system according to the present invention as described above may be applied to a power module supplying/using DC power, a power supply system, and a method of operating a power supply system. In particular, it may be usefully applied to a DC UPS module and a power supply system having the same, and may be applied and implemented to a motor control panel for controlling a plurality of motor loads, a motor control system, a motor operation system, and the like.

Although specific embodiments according to the present invention have been described so far, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims described below as well as the claims and equivalents.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above-described embodiments, which are various modifications and variations from these descriptions by those of ordinary skill in the art to which the present invention pertains. Transformation is possible. Accordingly, the spirit of the present invention should be understood only by the claims described below, and all equivalents or equivalent modifications thereof will fall within the scope of the spirit of the present invention.

10: power source 20: load
100 (200, 300, and 400): Power supply (power board)
110 (210, 310 and 410): the first power conversion device (converter)
120 (220, 320 and 420): the second power converter (inverter)
130a to 130d: first to fourth circuit breaker
140 (240, 340 and 440): control
600: control unit 1000: power supply system

Claims (15)

a plurality of power boards for converting power supplied from one or more power sources into DC power, converting the DC power into driving power of a load, and supplying the power to the load; and
a plurality of circuit breakers disposed on one side of each of the plurality of power boards to connect or disconnect the power terminals of the two power boards between one side of each of the plurality of power boards and the other side of the power board adjacent to the one side;
Each of the plurality of power boards,
a first power end corresponding to one end of the power end and a second power end corresponding to the other end of the power end;
The plurality of circuit breakers,
It is disposed between the two power panels, and each connects or separates the first power end of the power panel of one side and the second power end of the power panel of the other side,
Each of the plurality of power boards is connected to or separated from another power board at both ends through the plurality of circuit breakers, so that the connection between the plurality of power boards is continuous to form a loop structure,
The plurality of circuit breakers,
When power supply is interrupted in one or more of the plurality of power panels,
At least one of the circuit breakers connected to one side and the other side of the power panel where the power supply is stopped is closed, and at least one of the power terminals of the power panel connected to both sides of the stopped power panel is connected to the power end of the stopped power panel,
The power supply system, characterized in that the connected power panel supplies the DC power to the stopped power panel. The method of claim 1,
The one or more power sources include:
a first AC power source and a second AC power source for supplying AC power; and
DC power is stored, and when the power supply of the first AC power and the second AC power is stopped, the battery power in which the stored power is supplied to the plurality of power boards while the power supply is switched and restored. Power supply system, characterized in that. 3. The method of claim 2,
The battery power is
After the power supply is stopped, the stored power is continuously supplied to the plurality of power panels until the power supply is switched and restored. 3. The method of claim 2,
The one or more power sources include:
When power supply of the first AC power, the second AC power, and the battery power is stopped,
The power supply system further comprising a; emergency power supply for supplying emergency power to the load. 3. The method of claim 2,
Each of the plurality of power boards,
one or more first power conversion devices for converting the power supplied from the one or more power sources into the DC power; and
A power supply system comprising a; a second power converter for converting the DC power supplied from the at least one first power converter to the driving power supply to the load. 6. The method of claim 5,
The plurality of power boards,
Power supply system, characterized in that for supplying the DC power to the second power converter with any one of the one or more first power converters according to the state of the one or more power sources. 7. The method of claim 6,
The plurality of power boards,
When the power supply of the converter for supplying the DC power to the second power converter is stopped,
Power supply system, characterized in that for supplying the DC power to the second power converter through a converter other than the converter. 8. The method of claim 7,
One or more first power conversion devices in the mall,
Power supply system, characterized in that the DC power is supplied to the second power converter through a converter that receives power from the battery power while the converter is switched to the other converter. 3. The method of claim 2,
Each of the plurality of power boards,
The power supply system, characterized in that the power supply terminal is connected to any two circuit breakers among the plurality of circuit breakers. 10. The method of claim 9,
The plurality of power boards,
A power supply system, characterized in that the plurality of circuit breakers are respectively disposed between a power end of one power panel and a power end of two adjacent power panels. 3. The method of claim 2,
The plurality of circuit breakers,
Power supply system, characterized in that provided in the number corresponding to the plurality of power supply panel. 3. The method of claim 2,
The plurality of circuit breakers,
The power supply system, characterized in that it is closed when the DC power is connected between the plurality of power boards, and is opened when the DC power is intercepted between the plurality of power boards. 3. The method of claim 2,
The plurality of circuit breakers,
When the supply of power to one or more of the plurality of power panels is interrupted,
A power supply panel where the power supply is stopped and a circuit breaker disposed between the stopped power panel and an adjacent power panel are closed to connect the interrupted power panel and the adjacent power panel, from the adjacent power panel to the interrupted power panel Power supply system, characterized in that the DC power is supplied. 14. The method of claim 13,
The stopped power panel,
The power supply system, characterized in that the DC power is supplied from the converter connected to the battery power until the power supply is stopped and the DC power conducted from the adjacent power panel is supplied. 15. The method according to any one of claims 1 to 14,
and a control device for monitoring a state of at least one of the plurality of power boards and the plurality of circuit breakers, and controlling at least one of the plurality of power boards and the plurality of circuit breakers according to a monitoring result. power supply system.

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