CN111416337A - Power supply system, power supply method and data center - Google Patents
Power supply system, power supply method and data center Download PDFInfo
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- CN111416337A CN111416337A CN201910007051.XA CN201910007051A CN111416337A CN 111416337 A CN111416337 A CN 111416337A CN 201910007051 A CN201910007051 A CN 201910007051A CN 111416337 A CN111416337 A CN 111416337A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
Abstract
This specification provides a power supply system, a power supply method, and a data center, the power supply system including: the power supply system comprises a plurality of power supply circuits, wherein each power supply circuit comprises a high-voltage direct current rectifying device, each high-voltage direct current rectifying device comprises an input end and an output end, the input end of each high-voltage direct current rectifying device is used for being connected with a power supply energy source, and the output end of each high-voltage direct current rectifying device is used for being connected with an electric load. The direct current looped network comprises a plurality of direct current grid-connected points, and one direct current grid-connected point is arranged between the output end of the high-voltage direct current rectifying device and the power load corresponding to the high-voltage direct current rectifying device.
Description
Technical Field
The specification relates to the technical field of data center power supply, in particular to a power supply system, a power supply method and a data center.
Background
IDC computer lab (Internet Data Center ), high voltage direct current rectification system are independent each other, and ITs load type is single, reserves too big design allowance in the IDC electrical design process, has reduced IT output, causes the waste of electric power resource.
Disclosure of Invention
The specification provides a power supply system, a power supply method and a data center, which can improve power supply capacity.
According to a first aspect of embodiments herein, there is provided a power supply system including:
the power supply circuit comprises a high-voltage direct current rectifying device, the high-voltage direct current rectifying device comprises an input end and an output end, the input end of the high-voltage direct current rectifying device is used for being connected with a power supply energy source, and the output end of the high-voltage direct current rectifying device is used for being connected with an electric load;
the direct current looped network comprises a plurality of direct current grid-connected points, and one direct current grid-connected point is arranged between the output end of the high-voltage direct current rectifying device and the power load corresponding to the high-voltage direct current rectifying device.
Further, the direct current looped netowrk still includes a plurality of circuit breakers, adjacent two all be equipped with one between the direct current grid-connected point the circuit breaker.
Further, the direct current looped network comprises two rows of looped network lines which are connected end to end, and direct current grid connection points on the two rows of looped network lines are arranged in a staggered mode.
Further, the direct current network controller is connected with each high-voltage direct current rectifying device and the circuit breaker.
The alternating current-direct current conversion device comprises an input end and an output end, the input end of the alternating current-direct current conversion device is connected with a power supply energy source, and the output end of the alternating current-direct current conversion device is connected with the direct current ring network.
The high-voltage direct current rectifier device comprises a high-voltage direct current rectifier device, and is characterized by further comprising a collecting device, wherein the collecting device comprises an input end and an output end, the input end of the collecting device is connected with a power supply energy source, and the output end of the collecting device is connected with the input end of each high-voltage direct current rectifier device.
Further, a first switching device is also included, and the power supply sources include a first power supply source and a second power supply source; the first power supply energy and the second power supply energy both comprise output ends, two input ends of the first switch device are respectively connected with the output end of the first power supply energy and the output end of the second power supply energy, and the input end of the collecting device is connected with the output end of the first switch device.
Further, the power supply device further comprises a first switching device arranged between the output ends of the first power supply energy source and the second power supply energy source.
Furthermore, the device also comprises a transformer which is connected with the output end of the first power supply energy source.
Further, the second power supply source is an alternating current power generation source.
Further, the device also comprises a second switching device which is arranged between the input end of the alternating current-direct current conversion device and the input end of the collecting device.
Further, the power supply circuit further comprises an energy storage element connected with the high-voltage direct current rectifying device.
According to a second aspect of embodiments herein, there is provided a data center comprising:
a plurality of power consumers;
a plurality of power supply circuits for supplying electrical energy to the plurality of electrical loads, the power supply circuits comprising a high voltage direct current rectifier device, the high voltage direct current rectifier device comprising an input and an output, the input of the high voltage direct current rectifier device being for connection to a source of electrical energy and the output of the high voltage direct current rectifier device being for connection to a corresponding electrical load;
the direct current looped network comprises a plurality of direct current grid-connected points, and one direct current grid-connected point is arranged between the output end of the high-voltage direct current rectifying device and the power load corresponding to the high-voltage direct current rectifying device.
According to a third aspect of embodiments herein, there is provided a power supply method applied to a power supply system including: a plurality of power supply circuits and a direct current ring network; the power supply circuit comprises a high-voltage direct current rectifying device, the high-voltage direct current rectifying device comprises an input end and an output end, the input end of the high-voltage direct current rectifying device is used for being connected with a power supply energy source, and the output end of the high-voltage direct current rectifying device is used for being connected with a power load; the direct current ring network comprises a plurality of direct current grid-connected points, and one direct current grid-connected point is arranged between the output end of the high-voltage direct current rectifying device and the electric load corresponding to the high-voltage direct current rectifying device;
the power supply method comprises the following steps: when any one of the power supply circuits fails, the other power supply circuits transmit the electric energy of the power supply energy to the power load corresponding to the power supply circuit which fails through the direct current ring network.
According to the technical scheme, the high-voltage direct-current rectifying devices of the power supply circuits are arranged into the ring network to form the direct-current ring network, when any power supply circuit breaks down, other power supply circuits transmit the electric energy of the power supply energy to the power load corresponding to the power supply circuit which breaks down through the direct-current ring network, and the power supply capacity can be improved.
Drawings
Fig. 1 shows a schematic circuit diagram of a conventional power supply system.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the specification, as detailed in the appended claims.
The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present specification. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
The specification provides a power supply system, a power supply method and a data center, which can improve power supply capacity. The power supply system, the power supply method, and the data center according to the present specification will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present specification provides a power supply system, which may be suitable for an IDC (internet data Center), where the power supply system includes: a plurality of power supply circuits 10 and a dc ring network 20. In addition, the plurality of items described in the present specification means two or more items.
Wherein the supply circuit 10 comprises a High voltage direct current rectifier device 11 (shown as HVDC, High voltage rectifier dc), the High voltage direct current rectifier device 11 comprising an input and an output, the input of the High voltage direct current rectifier device 11 being adapted to be connected to a supply energy source 90 and the output of the High voltage direct current rectifier device 11 being adapted to be connected to an electrical load 80.
The dc ring network 20 includes a plurality of dc grid-connected points 21, and one dc grid-connected point 21 is disposed between the output end of the high-voltage dc rectifying device 11 and the electrical load 80 corresponding to the high-voltage dc rectifying device 11. In the embodiment, the electric load 80 may be a Head Cabinet device (HC in the figure) of the data center, or other front-end devices or back-end devices.
According to the technical scheme, in the power supply system, the high-voltage direct current rectifying devices 11 of each power supply circuit 10 are arranged to form a ring network to form a direct current ring network 20, when any power supply circuit 10 fails, other power supply circuits 10 transmit electric energy of the power supply energy 90 to the power load 80 corresponding to the failed power supply circuit 10 through the direct current ring network 20, that is, the high-voltage direct current rectifying devices 11 of the other power supply circuits 10 share the power of the high-voltage direct current rectifying devices 11 of the failed power supply circuit 10, all the high-voltage direct current rectifying devices 11 are mutually standby, each high-voltage direct current rectifying device 11 can ensure that the system continues to operate stably only by designing lower redundancy, and further the power supply capacity of the system can be improved. In addition, the high-voltage direct-current rectifying devices 11 of each power supply circuit 10 are arranged to form a ring network to form a direct-current ring network 20, the number of connected cabinets and the service types are increased in multiples, and a smaller simultaneous coefficient can be set for load calculation when the IT output capacity is designed, so that the IDC power supply capacity is improved, and the number of servers is increased.
In an optional embodiment, the DC ring network 20 further includes a plurality of Circuit breakers 22 (DCB, DC Circuit Breaker in the figure), and one Circuit Breaker 22 is disposed between two adjacent DC grid-connected points 21. Alternatively, the circuit breaker 22 may be a dc circuit breaker. In this way, both sides of each dc grid point 21 can be provided with dc breakers 22. When a single high-voltage direct-current rectifying device 11 is damaged and the corresponding circuit breaker 22 is disconnected, each electric load 80 still has two power supply routes to realize power supply, and high reliability of the system is guaranteed. The DCB direct current circuit breaker has the capacity and the function of blocking short-circuit current on two sides, and can be realized by a mechanical switch type direct current circuit breaker or a DC/DC isolation converter. The mechanical switch type direct current circuit breaker comprises an electric operation mechanism and has short-circuit current cutting-off capability and voltage checking soft starting capability. The DC/DC isolation converter can be of an isolated type or a non-isolated type and has the functions of cutting off short-circuit current, adjusting voltage balance at two sides, quickly compensating power and inhibiting resonance
Further, the direct current ring network 20 includes two rows of ring network lines 23 connected end to end, and the direct current merging points 21 on the two rows of ring network lines 23 are arranged in a staggered manner. As shown in the attached drawings, the two rows of looped network cables 23 are arranged vertically, it can be understood that the high-voltage dc rectifying device 11 of the first power supply circuit 10 is connected to the dc interconnection point 21 on the looped network cable 23 located above, the high-voltage dc rectifying device 11 of the second power supply circuit 10 is connected to the dc interconnection point 21 on the looped network cable 23 located below, and the high-voltage dc rectifying devices 11 of the other power supply circuits 10 are arranged in this order.
In an alternative embodiment, the power supply system of the present description further comprises a dc network controller 30 connected to each of said high voltage dc rectifying means 11 and to the circuit breaker. Specifically, the dc network controller 30 may be connected to each of the high-voltage dc rectifying devices 11 and the circuit breaker 22 through a communication line, and is configured to coordinate the output of the high-voltage dc rectifying devices 11, isolate the faulty high-voltage dc rectifying device 11, and further ensure safe and reliable operation of the system.
In an alternative embodiment, the power supply system of the present specification further includes an AC-DC conversion device 40 (shown as AC/DC), the AC-DC conversion device 40 includes an input end and an output end, the input end of the AC-DC conversion device 40 is connected to the power supply 90, and the output end of the AC-DC conversion device 40 is connected to the DC ring network 20. Thus, it is possible to provide two types of power outputs of dc/ac to the electric load 80, and to improve the power supply capability of the system.
In an alternative embodiment, the power supply system of the present specification further includes a collecting device 50, the collecting device 50 includes an input end and an output end, the input end of the collecting device 50 is connected to the power supply source 90, and the output end of the collecting device 50 is connected to the input end of each of the high-voltage direct-current rectifying devices 11. Therefore, each electric load 80 is provided with two power supply routes to realize power supply, and the high reliability of the system is ensured. In the present embodiment, a collecting device 50 is connected to the two-way power supply circuit 10, so that each consumer 80 has two-way power supply circuits to supply power.
In an alternative embodiment, the power supply system of the present specification further includes a first switching device 61 (represented by ATS in the figure), the power supply 90 includes a first power supply 91 and a second power supply 92, each of the first power supply 91 and the second power supply 92 includes an output, two inputs of the first switching device 61 are respectively connected to the output of the first power supply 91 and the output of the second power supply 92, and an input of the collecting device 50 is connected to the output of the first switching device 61. In this embodiment, the first power supply source 91 may be a commercial power source, a renewable energy source, a wind power source, a photovoltaic energy source, or the like, and the second power supply source 92 may be an alternating current power source, such as a diesel power source (indicated by G in the figure) or a wind power source. The second source of electrical energy 92 may supply the electrical loads 80 with emergency supplement in the event of a single grid fault. In a normal state, the first switching device 61 is connected to the first power supply 91, and when the first power supply 91 is interrupted, the first switching device is switched to be connected to the second power supply 92, so as to ensure uninterrupted power supply to the electrical load.
In the prior art, the output of an alternating-current medium-voltage diesel generator has phase problems and synchronization is difficult. The alternating-current low-voltage diesel generators are independently arranged without grid connection problem, but only the diesel generators with the same capacity can be configured when the configuration is redundant, and the investment is greatly increased. By adopting the power supply system of the specification, the high-voltage direct-current rectifying devices 11 of each power supply circuit 10 are arranged into a ring network to form a direct-current ring network 20, the alternating-current medium-voltage diesel generators can be arranged on the low-voltage side to directly supply power to the high-voltage direct-current rectifying devices 11, and the diesel generators are mutually connected without alternating current, so that the diesel generators are mutually equipped through the direct-current side.
In an alternative embodiment, the power supply system of the present disclosure further includes a second switching device 62 (represented by ATS in the figure) disposed between the input terminal of the ac-dc converter 40 and the input terminal of the sink device 50. Taking the second power supply source 92 as a diesel power generation source as an example, the diesel generator can be connected with the high-voltage direct-current rectifying device 11 through the first switching device 61 to provide power for the load nearby, so that the problem of alternating current parallel operation is avoided, a direct-current bus can be incorporated into the power grid for supplying power, a load peak is supplemented together with the power grid, the peak power supply capacity of the IDC is improved, and the power supply capacity of the system and the IT output capacity of the IDC are obviously improved.
In an alternative embodiment, the power supply system of the present description further comprises a transformer 70 (indicated by T in the figure) connected to the output of said first power supply source 91. It is understood that when the first power supply source 91 is the commercial power, the voltage of the commercial power may be converted into a voltage suitable for the high-voltage dc rectifier device 11 through the transformer 70.
In an alternative embodiment, the power supply circuit 10 further comprises an energy storage element connected to the high voltage dc rectifier device 11. The energy storage elements can be charged by electric energy flowing through the high-voltage direct-current rectifying device 11 of the power supply circuit 10, and when the high-voltage direct-current rectifying device 11 breaks down, the corresponding energy storage elements can be used for continuously supplying power to the electric load 80, so that the reliability of the system is ensured. In this embodiment, the energy storage element may be a battery.
It should be noted that all the high-voltage dc rectifiers in the dc-to-ac loop network have a current sharing function, and can be coordinated through communication and droop characteristics. All high-voltage direct-current rectifying devices, the storage battery, the direct-current circuit breaker and the diesel generator direct-current grid-connected device which are connected with the direct-current network controller through the direct-current ring-forming network are connected with the direct-current network controller through the communication lines, and the direct-current network controller coordinates networking actions, network disconnection actions, dispatching power and protection value adjustment. When the direct current network controller fails or the communication of the direct current network controller fails, the system can still run automatically by means of device logic or independently run by disconnecting the direct current circuit breaker from the network automatically. The direct current network controller only plays a role in optimizing operation effect, monitoring power flow and emergency protection. In addition, the dc circuit breaker must have functions of short-circuit protection and monitoring of voltage and current on both sides. The direct current breaker, the high-voltage direct current rectifying device and the storage battery are in level difference fit, and the action time is later than that of the direct current breaker, the high-voltage direct current rectifying device and the storage battery. The direct current circuit breakers are in a normally closed state after networking, and specifically can be mechanical direct current circuit breakers or DC/DC power electronic converters.
An embodiment of the present specification further provides a power supply method applied to a power supply system, where the power supply system includes: a plurality of power supply circuits 10 and a dc ring network 20; the power supply circuit 10 comprises a high-voltage direct current rectifying device 1111, the high-voltage direct current rectifying device 11 comprises an input end and an output end, the input end of the high-voltage direct current rectifying device 11 is used for being connected with the power supply energy source 90, and the output end of the high-voltage direct current rectifying device 11 is used for being connected with the electric load 80; the dc ring network 20 includes a plurality of dc grid-connected points 21, and one dc grid-connected point 21 is disposed between the output end of the high-voltage dc rectifying device 11 and the electrical load 80 corresponding to the high-voltage dc rectifying device 11. It should be noted that the descriptions about the power supply system in the above embodiments and embodiments are also applicable to the power supply method in this specification.
The power supply method comprises the following steps: when any one of the power supply circuits 10 fails, the other power supply circuits 10 transmit the electric energy of the power supply energy 90 to the electric loads 80 corresponding to the failed power supply circuit 10 through the dc ring network 20.
According to the power supply method in the specification, the power supply system sets the high-voltage direct-current rectifying devices 11 of each power supply circuit 10 into an interconnected ring network to form the direct-current ring network 20, when any power supply circuit 10 fails, other power supply circuits 10 transmit the electric energy of the power supply energy 90 to the power loads 80 corresponding to the failed power supply circuit 10 through the direct-current ring network 20, that is, the high-voltage direct-current rectifying devices 11 of the other power supply circuits 10 share the power of the high-voltage direct-current rectifying devices 11 of the failed power supply circuit 10, all the high-voltage direct-current rectifying devices 11 mutually support each other, and each high-voltage direct-current rectifying device 11 can ensure the system to continue to operate stably only by designing low redundancy, so that the power supply capacity of the system can be improved. In addition, the high-voltage direct-current rectifying devices 11 of each power supply circuit 10 are arranged to form a ring network to form a direct-current ring network 20, the number of connected cabinets and the service types are increased in multiples, and a smaller simultaneous coefficient can be set for load calculation when the IT output capacity is designed, so that the IDC power supply capacity is improved, and the number of servers is increased.
In an optional embodiment, the power supply method applied to the power supply system may further include a start control strategy. Specifically, before the power supply system is started integrally, the direct current circuit breaker is disconnected, and after each direct current grid-connected point of the direct current ring network completes corresponding storage battery charging and reaches a voltage stabilization point, the direct current circuit breaker is closed sequentially. For the high-voltage direct current rectifying device, the input state of the high-voltage direct current rectifying device and the switching state of the direct current circuit breaker are checked, the starting current of the high-voltage direct current rectifying device is checked, then the starting delay time of the high-voltage direct current rectifying device is checked, all the high-voltage direct current rectifying devices are started in sequence, the voltages on two sides of the direct current circuit breaker are checked and switched on, the current of the direct current circuit breaker is monitored, and the output power of the high-voltage direct current rectifying device is.
In an optional embodiment, the power supply method applied to the power supply system may further include a fault cut-out strategy. Specifically, an external power outage occurs, states on both sides of the circuit breaker are checked, an input state of the high-voltage direct current rectifying device is detected, if the high-voltage direct current rectifying device has no input and voltages on both sides of the circuit breaker are too low, loads are cut off step by step according to load grades, and the circuit breaker is sequentially opened, so that the entire power supply system enters a closed state.
The embodiment of the present specification further provides a data center, where the data center may be an IDC (Internet data center) or other form of data center. Referring again to fig. 1, the data center includes:
a plurality of power consumers 80. In the embodiment, the electric load 80 may be a Head Cabinet device (HC in the figure) of the data center, or other front-end devices or back-end devices.
A plurality of power supply circuits 10 for supplying power to the plurality of electrical loads 80, the power supply circuits 10 comprising a High Voltage DC rectifier device 11 (indicated as HVDC) and the High Voltage DC rectifier device 11 comprising an input and an output, the input of the High Voltage DC rectifier device 11 being adapted to be connected to a power supply source 90 and the output of the High Voltage DC rectifier device 11 being adapted to be connected to a corresponding electrical load 80.
The direct current looped network 20, the direct current looped network 20 includes a plurality of direct current grid-connected points 21, all be equipped with one between the output of high voltage direct current fairing 11 and the electric load 80 that corresponds with this high voltage direct current fairing 11 the direct current grid-connected point 21.
It should be noted that the descriptions of the electrical load, the power supply circuit, and the dc ring network in the above embodiments and implementation modes are also applicable to the data center in this specification.
According to the technical scheme, in the data center of the specification, the high-voltage direct-current rectifying devices 11 of each power supply circuit 10 are arranged to form a ring network to form a direct-current ring network 20, when any power supply circuit 10 fails, other power supply circuits 10 transmit electric energy of the power supply energy 90 to the power load 80 corresponding to the failed power supply circuit 10 through the direct-current ring network 20, that is, the high-voltage direct-current rectifying devices 11 of the other power supply circuits 10 share the power of the high-voltage direct-current rectifying devices 11 of the failed power supply circuit 10, all the high-voltage direct-current rectifying devices 11 are mutually standby, and each high-voltage direct-current rectifying device 11 can ensure that the system continues to operate stably only by designing low redundancy, so that the power supply capacity of the system can be. In addition, the high-voltage direct-current rectifying devices 11 of each power supply circuit 10 are arranged to form a ring network to form a direct-current ring network 20, the number of connected cabinets and the service types are increased in multiples, and a smaller simultaneous coefficient can be set for load calculation when the IT output capacity is designed, so that the IDC power supply capacity is improved, and the number of servers is increased.
Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (13)
1. A power supply system, comprising:
the power supply circuit comprises a high-voltage direct current rectifying device, the high-voltage direct current rectifying device comprises an input end and an output end, the input end of the high-voltage direct current rectifying device is used for being connected with a power supply energy source, and the output end of the high-voltage direct current rectifying device is used for being connected with an electric load;
the direct current looped network comprises a plurality of direct current grid-connected points, and one direct current grid-connected point is arranged between the output end of the high-voltage direct current rectifying device and the power load corresponding to the high-voltage direct current rectifying device.
2. The power supply system according to claim 1, wherein the dc ring network further comprises a plurality of circuit breakers, and one circuit breaker is disposed between two adjacent dc grid-connected points.
3. The power supply system according to claim 2, wherein the dc ring network comprises two rows of ring network lines connected end to end, and dc interconnection points on the two rows of ring network lines are staggered.
4. A power supply system according to claim 2, further comprising a dc network controller connected to each of said high voltage dc rectifying means and a circuit breaker.
5. The power supply system of claim 1, further comprising an ac-dc converter device, said ac-dc converter device comprising an input and an output, said input of said ac-dc converter device being connected to a power supply source, said output of said ac-dc converter device being connected to said dc ring network.
6. The power supply system of claim 5, further comprising a sink device, the sink device comprising an input and an output, the input of the sink device being connected to a source of electrical power, the output of the sink device being connected to the input of each of the high voltage DC rectifying devices.
7. The power supply system according to claim 6, further comprising a first switching device, the power supply source including a first power supply source and a second power supply source; the first power supply energy and the second power supply energy both comprise output ends, two input ends of the first switch device are respectively connected with the output end of the first power supply energy and the output end of the second power supply energy, and the input end of the collecting device is connected with the output end of the first switch device.
8. The power supply system of claim 7, further comprising a transformer coupled to an output of the first source of electrical energy.
9. The power supply system of claim 7, wherein the second source of electrical power is an ac power source.
10. The power supply system of claim 6, further comprising a second switching device disposed between the input of said ac-dc converter means and the input of said sink means.
11. The power supply system of claim 1, wherein the power supply circuit further comprises an energy storage element connected to the high voltage direct current rectifying device.
12. A data center, comprising:
a plurality of power consumers;
a plurality of power supply circuits for supplying electrical energy to the plurality of electrical loads, the power supply circuits comprising a high voltage direct current rectifier device, the high voltage direct current rectifier device comprising an input and an output, the input of the high voltage direct current rectifier device being for connection to a source of electrical energy and the output of the high voltage direct current rectifier device being for connection to a corresponding electrical load;
the direct current looped network comprises a plurality of direct current grid-connected points, and one direct current grid-connected point is arranged between the output end of the high-voltage direct current rectifying device and the power load corresponding to the high-voltage direct current rectifying device.
13. A power supply method applied to a power supply system is characterized in that,
the power supply system includes: a plurality of power supply circuits and a direct current ring network; the power supply circuit comprises a high-voltage direct current rectifying device, the high-voltage direct current rectifying device comprises an input end and an output end, the input end of the high-voltage direct current rectifying device is used for being connected with a power supply energy source, and the output end of the high-voltage direct current rectifying device is used for being connected with a power load; the direct current ring network comprises a plurality of direct current grid-connected points, and one direct current grid-connected point is arranged between the output end of the high-voltage direct current rectifying device and the electric load corresponding to the high-voltage direct current rectifying device;
the power supply method comprises the following steps: when the high-voltage direct-current rectifying device of any one power supply circuit breaks down, other power supply circuits transmit the electric energy of the power supply energy to the power load corresponding to the broken power supply circuit through the direct-current ring network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910007051.XA CN111416337A (en) | 2019-01-04 | 2019-01-04 | Power supply system, power supply method and data center |
Applications Claiming Priority (1)
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| CN207398833U (en) * | 2017-10-31 | 2018-05-22 | 三峡大学 | A kind of multilayer closed loop power distribution system suitable for intelligent building |
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| CN102005817A (en) * | 2010-09-25 | 2011-04-06 | 中国农业大学 | Uninterruptible power supply device based on microgrid and dispatching control method thereof |
| CN107394831A (en) * | 2017-08-29 | 2017-11-24 | 国家电网公司 | A kind of harbour alternating current-direct current series-parallel connection power distribution network and its integrated dispatch management-control method |
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