CN116014867A - Method for switching power supply of quick cutting device and quick cutting device - Google Patents
Method for switching power supply of quick cutting device and quick cutting device Download PDFInfo
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- CN116014867A CN116014867A CN202211061354.8A CN202211061354A CN116014867A CN 116014867 A CN116014867 A CN 116014867A CN 202211061354 A CN202211061354 A CN 202211061354A CN 116014867 A CN116014867 A CN 116014867A
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- power supply
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008859 change Effects 0.000 claims description 16
- 230000001960 triggered effect Effects 0.000 claims description 8
- 230000009191 jumping Effects 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims 2
- 230000009471 action Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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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
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The invention provides a method for switching power sources of a fast switching device and the fast switching device, wherein a power distribution system comprises the fast switching device and at least two power supply sources, one power supply source which is currently supplying power is used as a working power source, the other power supply sources are used as standby power sources, the fast switching device is used for triggering the switching between the working power source and the standby power source under the condition that the power distribution system is confirmed to meet the condition, and the method comprises the following steps: receiving a target mode, wherein the target mode is used for triggering the quick cutting device to start and judge whether to execute the operation of power supply switching, and the target mode is determined according to the real-time working condition of the power distribution system; storing the target mode; if the quick cutting device is identified to be started in the target mode, judging whether to execute the operation of power supply switching. Thus, the personalized requirements of the user on the mode of switching the power supply can be realized.
Description
Technical Field
The invention relates to the field of power distribution systems, in particular to a method for switching power sources of a fast switching device and the fast switching device.
Background
Many power distribution systems in factories typically have multiple power supplies, one currently powering as a working power supply and the remaining power supplies as backup power supplies. These power supplies are connected to the substations of the upper stage, respectively, and for example, the same upper stage of the substations can be accessed, but are connected to different buses. In some cases, it is necessary to disconnect the operating power supply. In order to ensure uninterrupted power consumption, it is necessary to switch the power supply from the operating power supply to the standby power supply as soon as possible. In the prior art, a fast-cutting device is generally used to perform the operation of power switching.
In the existing quick cutting device, several common starting modes, such as manual starting, fault starting and self-checking starting, are set when the device leaves a factory. The manual switching refers to manual triggering of the fast switching device to start switching, the fault switching refers to switching triggered by external protection and control equipment (such as a relay protection device), the self-checking switching refers to power switching automatically triggered inside the fast switching device, and for example, the fast switching device triggers power switching operation under the condition that three-phase voltages on a bus are lower than a setting value and the time is longer than a threshold value.
Disclosure of Invention
In view of this, the present invention proposes a method for switching power supplies of a fast switching device, a power distribution system including a fast switching device and at least two power supplies, one power supply currently being supplied as a working power supply, and the remaining power supplies as standby power supplies, the fast switching device being configured to trigger switching between the working power supply and the standby power supply in case that it is confirmed that the power distribution system satisfies a condition, the method comprising:
receiving a target mode, wherein the target mode is used for triggering the quick cutting device to start and judge whether to execute the operation of power supply switching, and the target mode is determined according to the real-time working condition of the power distribution system;
storing the target mode;
if the quick cutting device is identified to be started in the target mode, judging whether to execute the operation of power supply switching.
According to the method as described above, optionally, further comprising:
if the quick cutting device is identified to be started in a preset starting mode, judging whether to execute the operation of power supply switching, wherein the preset starting mode is as follows: manual start, fault start, skip start or self-checking start;
and if the judgment result is yes, triggering the switching between the two power supplies.
According to the method as described above, optionally, the conditions of the handover corresponding to the target manner include at least one of the following conditions:
the input current of the working power supply is 0;
the working power supply has negative sequence quantity exceeding the allowable range;
the working power supply generates zero sequence quantity exceeding the allowable range;
the frequency change rate of the working power supply exceeds the allowable range;
the working power supply has a voltage change rate exceeding an allowable range;
the working power supply has reverse power.
According to the method as described above, optionally, receiving a target pattern comprises:
and receiving the target mode input by the user through an editing interface through a preset port.
The invention also provides a fast cutting device which is positioned in an electric power system, the electric power system also comprises at least two power supply sources, one power supply source which is currently supplying power is used as a working power source, the other power supply sources are used as standby power sources, and the fast cutting device is used for triggering the switching between the working power source and the standby power source under the condition that the power distribution system is confirmed to meet the condition, and is characterized in that the fast cutting device comprises:
the receiving unit is used for receiving a target mode, the target mode is used for triggering the quick cutting device to start and judge whether to execute the operation of power supply switching, and the target mode is determined according to the real-time working condition of the power distribution system;
a storage unit for storing the target mode;
the identification unit is used for identifying whether the quick cutting device is started in the target mode, and if the identification result is yes, a judgment unit is triggered;
the judging unit is used for judging whether to execute the operation of power supply switching.
According to the quick cutting device as described above, optionally, the identifying unit is further configured to identify whether the quick cutting device is started in a preset starting manner, where the preset starting manner is: and (3) starting manually, starting in a fault, starting by stealing and jumping or starting by self-checking, and triggering the judging unit if the identification result is yes.
According to the fast cutting device as described above, optionally, the conditions of the switching corresponding to the target manner include at least one of the following conditions:
the input current of the working power supply is 0;
the working power supply has negative sequence quantity exceeding the allowable range;
the working power supply generates zero sequence quantity exceeding the allowable range;
the frequency change rate of the working power supply exceeds the allowable range;
the working power supply has a voltage change rate exceeding an allowable range;
the working power supply has reverse power.
According to the fast cutting device as described above, optionally, the receiving unit is configured to:
and receiving the target mode input by the user through an editing interface through a preset port.
The invention also provides a quick cutting device, which comprises:
at least one memory for storing instructions;
at least one processor for executing the method of switching power supply according to the cut-off device according to any one of the above according to the instructions stored by the memory.
The present invention also provides a readable storage medium having stored therein machine readable instructions which, when executed by a machine, perform a method of switching power supplies according to a fast switching device as defined in any one of the above.
According to the scheme, a user can set a target mode for determining the switching condition between the two power supplies by himself, so that the user can realize personalized setting, and the requirements of the user are met.
Drawings
The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
fig. 1 is a flowchart of a method for switching power supply of a fast switching device according to an embodiment of the invention.
Fig. 2 is a flowchart of a method for switching power supply of a fast switching device according to another embodiment of the invention.
Fig. 3 is a schematic structural view of a fast cutting device according to an embodiment of the present invention.
Detailed Description
The present invention will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
After the quick switching device is triggered and started, whether the operation of power supply switching is executed or not needs to be judged, namely whether the standby power supply meets the switching-on condition or not is judged, and after the fact that the switching-on condition is met is judged, the standby power supply is switched on, so that the operation of power supply switching is completed. With the increase of the complexity of the operation condition of the power distribution system, several starting modes preset in factory cannot meet the demands of customers. Based on this, the present application provides a method for switching power supply of the following fast switching device.
Example 1
The embodiment provides a method for switching power supply of a fast cutting device, and an execution main body of the method is the fast cutting device. The quick cutting device is arranged in a power distribution system, and the power distribution system comprises a plurality of power supplies besides the quick cutting device, wherein the number of the power supplies can be set according to actual needs, for example, 2, 3 or more. The quick switching device is used for triggering the switching between the working power supply and the standby power supply under the condition that the power distribution system is confirmed to meet the switching condition corresponding to the starting mode.
Fig. 1 is a flowchart illustrating a method for switching power supply of the fast switching device according to the present embodiment. The method comprises the following steps:
The quick cutting device is generally pre-stored with several common starting modes, such as manual starting, fault starting, self-checking starting and skip starting. In actual operation, the user selects one or more of the starting modes to trigger the quick-cutting device to start the operation of judging whether to execute the power supply switching. And switching on the standby power supply if the switching condition is met so as to realize the switching between the two power supplies.
In addition, the user can also determine a desired starting mode, namely a target mode, according to the real-time working condition of the power distribution system of the user, wherein the target mode is the personalized requirement of the user. The target means may comprise at least one of the following conditions of switching:
the input current of the working power supply is 0;
the working power supply has negative sequence quantity exceeding the allowable range;
zero sequence quantity exceeding the allowable range appears in the working power supply;
the frequency change rate of the working power supply exceeding the allowable range;
the voltage change rate of the working power supply exceeding the allowable range;
the working power supply exhibits reverse power.
Specifically, the condition of the working power supply can be monitored in a direct or indirect mode, for example, the condition that the power supply is connected with one end of a primary transformer substation is monitored to determine the input current of the working power supply, or the condition that the stator or the rotor of the working power supply is monitored to obtain the negative sequence quantity, the zero sequence quantity, the frequency change rate or the voltage change rate of the working power supply is monitored. The negative sequence amount or the zero sequence amount of the working power supply can be specifically the negative sequence amount or the zero sequence amount of the voltage. Both the rate of change of frequency and the rate of change of voltage of the operating power supply can be achieved by continuous monitoring of the sensor. The reverse power of the working power supply is also called power direction protection, and when the reverse power of the working power supply occurs, the reverse power protection action circuit breaker trips, and the reverse power protection action circuit breaker can be realized by collecting the voltage and the current of three phases of the working power supply. In the target mode, the working condition of the working power supply is directly monitored, so that whether the working power supply has a problem or not can be found as early as possible, and switching can be performed in time.
As one exemplary illustration, after determining the target mode, the user may send the target mode to the fly-cutting device via the editing interface. For example, the quick cutting device may receive, through a preset port, a target mode input by a user through an editing interface.
The quick cut device stores the target mode after receiving the target mode sent by the user. The specific storage mode and storage location are not limited, and may be stored in, for example, a memory of the fast cutting device, so as to facilitate the call.
After the quick-switching device is started in a target mode, the quick-switching device starts to judge whether the switching-on condition of the standby power supply is met, and if the judgment result is yes, the standby power supply is triggered to execute switching-on operation. The switching-on conditions of the standby power supply belong to the prior art, such as fast switching, synchronous capturing switching, residual voltage switching and the like, and all correspond to specific switching-on conditions of the standby power supply, and are not described herein.
According to the embodiment, the user can set the target mode for determining the switching condition between the two power supplies by himself, so that the user can realize personalized setting, and the requirement of the user is met.
Example two
The method for switching power supply of the fast switching device in the first embodiment is further described in this embodiment.
Fig. 2 is a flowchart illustrating a method for switching power supply of the fast switching device according to the present embodiment. The method comprises the following steps:
After determining the required target mode, the user inputs the target mode through an editing interface, and then the target mode is sent to the quick cutting device through a preset port on the quick cutting device. The editing interface herein may be presented by the software corresponding to the fly-cutting device. The preset port may be
In addition, the user can set a plurality of target modes and send the target modes to the quick cutting device.
For example, the one or more target patterns are stored with other startup patterns. Other starting modes are manual starting, fault starting and self-checking starting. The preset starting mode is preset in the quick cutting device before delivery.
The start-up mode may be one of preset start-up modes or a target mode. After the quick-switching device is started, whether the operation of power supply switching is executed or not is judged, namely whether the standby power supply is switched on or not is judged.
Under the condition that the quick switching device judges that the condition of switching on the standby power supply is met, the standby power supply is triggered to switch on, and switching between the two power supplies is further achieved.
In this embodiment, the user may set the target manner for determining the condition of switching between the two power supplies by himself, so that the user may implement personalized setting, and the requirement of the user is satisfied.
Example III
The embodiment provides a fast-cutting device, the fast-cutting device is arranged in a power distribution system, the power distribution system further comprises at least two power supply sources, one power supply source which is currently supplying power is used as a working power source, the other power supply sources are used as standby power sources, and the fast-cutting device is used for triggering switching between the working power source and the standby power source under the condition that the power distribution system is confirmed to meet the condition.
Fig. 3 is a schematic structural view of the fast cutting device according to the present embodiment. The fast cutting device comprises a receiving unit 301, a storing unit 302, an identifying unit 303 and a judging unit 304.
The receiving unit 301 is configured to receive a target mode, where the target mode is used to trigger the fast-cutting device to start and determine whether to perform an operation of power switching, and the target mode is determined according to a real-time working condition of the power distribution system; the storage unit 302 is used for storing a target mode; the identifying unit 303 is configured to identify whether the quick cutting device is activated in a target manner, and if the identification result is yes, trigger a judging unit 304; the judgment unit 304 is used to judge whether to perform the operation of power supply switching.
Optionally, the identifying unit 303 is further configured to identify whether the quick-cutting device is started in a preset starting manner, where the preset starting manner is: manual start, fault start, skip start or self-checking start, if the identification result is yes, the judgment unit 304 is triggered.
Optionally, the conditions of the handover corresponding to the target manner include at least one of the following conditions:
the input current of the working power supply is 0;
the working power supply has negative sequence quantity exceeding the allowable range;
zero sequence quantity exceeding the allowable range appears in the working power supply;
the frequency change rate of the working power supply exceeding the allowable range;
the voltage change rate of the working power supply exceeding the allowable range;
the working power supply exhibits reverse power.
Optionally, the receiving unit 301 is configured to: and receiving a target mode input by a user through an editing interface through a preset port.
The working method of each unit of this embodiment is the same as that of the previous embodiment, and will not be described here again.
According to the embodiment, the user can set the target mode for determining the switching condition between the two power supplies by himself through the quick switching device, so that the user can set according to the actual working condition of the power distribution network, and the requirement of the user is met.
The invention also provides a quick cutting device which comprises at least one memory and at least one processor. The memory is used for storing instructions. The processor is configured to execute the method for switching the power supply of the fast-cutting device according to any of the foregoing embodiments according to the instructions stored in the memory.
Embodiments of the present invention also provide a readable storage medium. The readable storage medium has stored therein machine readable instructions which, when executed by a machine, perform the method of switching power supplies of the fly-cutting apparatus described in any of the previous embodiments.
The readable medium has stored thereon machine readable instructions which, when executed by a processor, cause the processor to perform any of the methods described above. In particular, a system or apparatus may be provided with a readable storage medium having stored thereon software program code implementing the functions of any of the above embodiments, and having a computer or processor of the system or apparatus read out and execute machine readable instructions stored in the readable storage medium.
In this case, the program code itself read from the readable medium may implement the functions of any of the above-described embodiments, and thus the machine-readable code and the readable storage medium storing the machine-readable code form part of the present invention.
Examples of readable storage media include floppy disks, hard disks, magneto-optical disks, optical disks (e.g., CD-ROMs, CD-R, CD-RWs, DVD-ROMs, DVD-RAMs, DVD-RWs, DVD+RWs), magnetic tapes, nonvolatile memory cards, and ROMs. Alternatively, the program code may be downloaded from a server computer or cloud by a communications network.
It will be appreciated by those skilled in the art that various changes and modifications can be made to the embodiments disclosed above without departing from the spirit of the invention. Accordingly, the scope of the invention should be limited only by the attached claims.
It should be noted that not all the steps and units in the above flowcharts and the system configuration diagrams are necessary, and some steps or units may be omitted according to actual needs. The execution sequence of the steps is not fixed and can be adjusted as required. The apparatus structures described in the above embodiments may be physical structures or logical structures, that is, some units may be implemented by the same physical entity, or some units may be implemented by multiple physical entities, or may be implemented jointly by some components in multiple independent devices.
In the above embodiments, the hardware unit may be mechanically or electrically implemented. For example, a hardware unit or processor may include permanently dedicated circuitry or logic (e.g., a dedicated processor, FPGA, or ASIC) to perform the corresponding operations. The hardware unit or processor may also include programmable logic or circuitry (e.g., a general purpose processor or other programmable processor) that may be temporarily configured by software to perform the corresponding operations. The particular implementation (mechanical, or dedicated permanent, or temporarily set) may be determined based on cost and time considerations.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. A method for switching power supplies of a fast switching device, a power distribution system including a fast switching device and at least two power supplies, one power supply currently being supplied as a working power supply and the remaining power supplies as standby power supplies, the fast switching device being configured to trigger switching between the working power supply and the standby power supplies in case that it is confirmed that the power distribution system satisfies a condition, the method comprising:
receiving a target mode, wherein the target mode is used for triggering the quick cutting device to start and judge whether to execute the operation of power supply switching, and the target mode is determined according to the real-time working condition of the power distribution system;
storing the target mode;
if the quick cutting device is identified to be started in the target mode, judging whether to execute the operation of power supply switching.
2. The method as recited in claim 1, further comprising:
if the quick cutting device is identified to be started in a preset starting mode, judging whether to execute the operation of power supply switching, wherein the preset starting mode is as follows: manual start, fault start, skip start or self-checking start;
and if the judgment result is yes, triggering the switching between the two power supplies.
3. The method of claim 1, wherein the conditions for the handover corresponding to the target manner include at least one of the following conditions:
the input current of the working power supply is 0;
the working power supply has negative sequence quantity exceeding the allowable range;
the working power supply generates zero sequence quantity exceeding the allowable range;
the frequency change rate of the working power supply exceeds the allowable range;
the working power supply has a voltage change rate exceeding an allowable range;
the working power supply has reverse power.
4. The method of claim 1, wherein receiving a target pattern comprises:
and receiving the target mode input by the user through an editing interface through a preset port.
5. The utility model provides a cut soon device, this cut soon device is located in a distribution system, and this distribution system still includes two at least power supplies, and one power supply that is supplying power at present is as working power supply, and remaining power supply is as stand-by power supply, cut soon device is used for confirming under the condition that distribution system satisfies the condition, trigger working power supply with switch between the stand-by power supply, its characterized in that, cut soon device includes:
the receiving unit is used for receiving a target mode, the target mode is used for triggering the quick cutting device to start and judge whether to execute the operation of power supply switching, and the target mode is determined according to the real-time working condition of the power distribution system;
a storage unit for storing the target mode;
the identification unit is used for identifying whether the quick cutting device is started in the target mode, and if the identification result is yes, a judgment unit is triggered;
the judging unit is used for judging whether to execute the operation of power supply switching.
6. The fly-cutting apparatus according to claim 5, wherein the identifying unit is further configured to identify whether the fly-cutting apparatus is activated in a preset activation mode, the preset activation mode being: and (3) starting manually, starting in a fault, starting by stealing and jumping or starting by self-checking, and triggering the judging unit if the identification result is yes.
7. The fast cutting device according to claim 5, wherein the conditions for the switching corresponding to the target mode include at least one of the following conditions:
the input current of the working power supply is 0;
the working power supply has negative sequence quantity exceeding the allowable range;
the working power supply generates zero sequence quantity exceeding the allowable range;
the frequency change rate of the working power supply exceeds the allowable range;
the working power supply has a voltage change rate exceeding an allowable range;
the working power supply has reverse power.
8. The fly-cutting apparatus of claim 5, wherein the receiving unit is configured to:
and receiving the target mode input by the user through an editing interface through a preset port.
9. Quick cutting device, its characterized in that includes:
at least one memory for storing instructions;
at least one processor for executing the method of switching power supply of the fast cutting device according to any one of claims 1-4 according to the instructions stored by the memory.
10. A readable storage medium having stored therein machine readable instructions which, when executed by a machine, perform a method of switching power supplies for a fly-cutting apparatus according to any one of claims 1-4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211061354.8A CN116014867A (en) | 2022-08-31 | 2022-08-31 | Method for switching power supply of quick cutting device and quick cutting device |
| PCT/EP2023/073774 WO2024047099A1 (en) | 2022-08-31 | 2023-08-30 | A method for switching power supply with a quick switching device, and a quick switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211061354.8A CN116014867A (en) | 2022-08-31 | 2022-08-31 | Method for switching power supply of quick cutting device and quick cutting device |
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| CN116014867A true CN116014867A (en) | 2023-04-25 |
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| CN202211061354.8A Pending CN116014867A (en) | 2022-08-31 | 2022-08-31 | Method for switching power supply of quick cutting device and quick cutting device |
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| Country | Link |
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| CN (1) | CN116014867A (en) |
| WO (1) | WO2024047099A1 (en) |
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|---|---|---|---|---|
| CN111817429A (en) * | 2020-07-23 | 2020-10-23 | 西门子股份公司 | Method and apparatus for power supply switching in power system |
| EP3989392A1 (en) * | 2020-10-19 | 2022-04-27 | SolarEdge Technologies Ltd. | Power device terminal backup switch unit of an ups |
| CN112910079A (en) * | 2021-02-23 | 2021-06-04 | 艾普斯电源（天津）有限公司 | Expandable battery pack uninterrupted power supply comprehensive power distribution device |
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- 2022-08-31 CN CN202211061354.8A patent/CN116014867A/en active Pending
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| WO2024047099A1 (en) | 2024-03-07 |
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