Power coordination control system close to power distribution area and control method thereof

Abstract

The invention relates to the technical field of power grid dispatching, and particularly provides a power coordination control system and method for an adjacent power distribution area, and the system comprises an area group composed of at least two adjacent power distribution areas, a multi-port energy router, and a local controller. Each alternating current port of the multi-port energy router is connected with the low-voltage side of a transformer of each power distribution transformer area in the transformer area group through an alternating current connection line; each AC port of the multi-port energy router is an independent AC / DC bidirectional power electronic module, and each AC / DC bidirectional power electronic module is interconnected through a DC bus. And the local controller is used for performing power control on each port of the multi-port energy router. According to the technical scheme provided by the invention, mutual complementation of capacities of transformer areas and capacity sharing of energy storage of the distribution network are realized, the nearby absorption capability of distributed power generation and the access capability of the electric vehicle charging pile are improved, and the power peak-valley difference of the power distribution network is reduced, so that the safety, stability and economic operation level of the power distribution network are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid dispatching, and in particular to a power coordination control system and a control method thereof for adjacent power distribution station areas. Background Art

[0002] In recent years, with the rapid development of distributed renewable energy power generation represented by photovoltaics and electric vehicle charging, the uncertainty and volatility of power generation and consumption have increased the difficulty of distribution network planning and control. The problem of heavy forward and reverse overload of distribution station area transformers caused by a high proportion of distributed power generation and electric vehicle charging access is common.

[0003] At present, the heavy overload problem can be solved by increasing the capacity of the transformer, but this will lead to long periods of light load operation, resulting in problems such as low equipment load rate, which will bring major challenges to the safe, stable and economical operation of the distribution network. Summary of the invention

[0004] In order to overcome the above defects, the present invention proposes a power coordination control system and a control method for adjacent distribution station areas.

[0005] In a first aspect, a power coordination control system for an adjacent power distribution station area is provided, wherein the power coordination control system for an adjacent power distribution station area comprises:

[0006] A substation group consisting of at least two adjacent distribution substations, a multi-port energy router and a local controller;

[0007] Each AC port of the multi-port energy router is connected to the low-voltage side of the transformer of each distribution substation in the substation group through an AC connection line;

[0008] Each AC port of the multi-port energy router is an independent AC / DC bidirectional power electronic module, and each AC / DC bidirectional power electronic module is interconnected through a DC bus;

[0009] The local controller is used to perform power control on each port of the multi-port energy router.

[0010] Preferably, the DC port of the multi-port energy router is connected to a distributed power generation unit, an energy storage unit and / or a load through a DC / DC module.

[0011] Furthermore, the DC port of the multi-port energy router is interconnected with each AC port of the multi-port energy router through a DC bus.

[0012] Preferably, the AC interconnection line is a 0.4 kV AC interconnection line, adopting a three-phase four-wire or three-phase five-wire system.

[0013] Preferably, the control mode of the AC / DC bidirectional power electronic module is a constant power control mode.

[0014] Preferably, the voltage of the DC bus is 300-900V.

[0015] Preferably, the local controller is specifically used for:

[0016] Real-time monitoring of the load rate of transformers in each distribution station area;

[0017] Get the absolute value of the load rate, and get the maximum and minimum values;

[0018] Assume that the active power flows from the AC side to the DC side as positive, and vice versa as negative. When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is positive power, the active power emitted by the port corresponding to the maximum value is increased by P step When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is negative power, the active power absorbed by the port corresponding to the maximum value is increased by P step ;

[0019] Among them, P step is the preset adjustment step.

[0020] Furthermore, the local controller is specifically used for:

[0021] When the three-phase current imbalance of the distribution station area transformer exceeds the set value, the three-phase asymmetric operation of the corresponding port is controlled to compensate for the unbalanced current.

[0022] Furthermore, the local controller is specifically used for:

[0023] When the power factor of the transformer in the distribution station area exceeds the set value, the corresponding port is controlled to emit or absorb reactive power to perform reactive compensation on the corresponding transformer.

[0024] In a second aspect, a control method for a power coordination control system in an adjacent distribution station area is provided, the method comprising:

[0025] Real-time monitoring of the load rate of transformers in each distribution station area;

[0026] Get the absolute value of the load rate, and get the maximum and minimum values;

[0027] Assume that the active power flows from the AC side to the DC side as positive, and vice versa as negative. When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is positive power, the active power emitted by the port corresponding to the maximum value is increased by P stepWhen the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is negative power, the active power absorbed by the port corresponding to the maximum value is increased by P step ;

[0028] Among them, P step is the preset adjustment step.

[0029] Preferably, the real-time monitoring of the load rate of each distribution station area transformer includes:

[0030] Each distribution substation uploads its own transformer information to the fusion terminal within the distribution substation;

[0031] The fusion terminal uploads the transformer information to the distribution cloud master station through the communication network, and uses high-speed power carrier communication to inject the transformer information into the AC communication line connected to the energy router;

[0032] The local controller collects transformer information from the AC bus through local communication.

[0033] Furthermore, the transformer information includes at least one of the following: three-phase voltage, three-phase current, three-phase frequency, three-phase forward and reverse active power, three-phase forward and reverse reactive power, power factor, substation load factor, transformer fault / alarm status, and circuit breaker position status.

[0034] Furthermore, when the three-phase current imbalance of the distribution station area transformer exceeds the set value, the three-phase asymmetric operation of the corresponding port is controlled to compensate for the unbalanced current.

[0035] Furthermore, when the power factor of the transformer in the distribution station area exceeds the set value, the corresponding port is controlled to emit or absorb reactive power to perform reactive compensation on the corresponding transformer.

[0036] In a third aspect, a computer device is provided, comprising: one or more processors;

[0037] The processor is configured to execute one or more programs;

[0038] When the one or more programs are executed by the one or more processors, the control method of the power coordination control system of adjacent distribution station areas is implemented.

[0039] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed, the control method of the power coordination control system of adjacent distribution station areas is implemented.

[0040] The above one or more technical solutions of the present invention have at least one or more of the following beneficial effects:

[0041] The present invention provides a power coordination control system for adjacent distribution stations and a control method thereof, comprising: a station group consisting of at least two adjacent distribution stations, a multi-port energy router and an on-site controller; each AC port of the multi-port energy router is connected to the low-voltage side of the transformer of each distribution station in the station group through an AC interconnection line; each AC port of the multi-port energy router is an independent AC / DC bidirectional power electronic module, and each AC / DC bidirectional power electronic module is interconnected through a DC bus; the on-site controller is used to perform power control on each port of the multi-port energy router. The technical solution provided by the present invention realizes the capacity mutual assistance of the station transformer and the capacity sharing of the distribution network energy storage, increases the nearby absorption capacity of distributed power generation and the access capacity of electric vehicle charging piles, reduces the peak-to-valley difference of the distribution network power, takes into account the three-phase imbalance control and reactive power compensation of the station transformer, and improves the load rate of the distribution network equipment, thereby improving the safety, stability and economic operation level of the distribution network. Specifically:

[0042] The present invention adopts a multi-port energy router, and through the coordinated control of the power of each port, it realizes the balanced use of the transformer capacity in the adjacent distribution station area, achieves the purpose of overall dynamic capacity increase, and helps to solve the problem of alternating heavy overload and light load of the distribution transformer in a relatively short time.

[0043] The multi-port energy router of the present invention communicates with the substation fusion terminal through a high-speed power carrier on-site controller to obtain the operation information of the substation transformer, thereby reducing the difficulty of laying communication cables.

[0044] The present invention introduces a control cycle and an adjustment step into the control logic, and takes maintaining the DC side bus voltage within a reasonable range as a control reference means, which can converge quickly, ensure that the transformers in each distribution station area do not exceed the limit, and will not cause repeated fluctuations in the power of each module.

[0045] The energy router of the present invention can take into account both three-phase imbalance control and reactive power compensation in the substation area. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a main structural block diagram of a power coordination control system for adjacent distribution stations according to an embodiment of the present invention;

[0047] Figure 2 It is a schematic diagram of the port settings and connection relationship of the energy router according to an embodiment of the present invention;

[0048] Figure 3 It is a control flow chart of the local controller of an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] As disclosed in the background technology, in recent years, with the rapid development of distributed renewable energy power generation represented by photovoltaics and electric vehicle charging, the uncertainty and volatility of power generation and consumption have increased the difficulty of distribution network planning and control. The problem of heavy forward and reverse overload of distribution station area transformers caused by a high proportion of distributed power generation and electric vehicle charging access is common.

[0052] At present, the heavy overload problem can be solved by increasing the capacity of the transformer, but this will lead to long periods of light load operation, resulting in problems such as low equipment load rate, which will bring major challenges to the safe, stable and economical operation of the distribution network.

[0053] In order to improve the above problems, the present invention provides a power coordination control system and control method for adjacent distribution stations, including: a station group consisting of at least two adjacent distribution stations, a multi-port energy router and an on-site controller; each AC port of the multi-port energy router is connected to the low-voltage side of the transformer of each distribution station in the station group through an AC interconnection line; each AC port of the multi-port energy router is an independent AC / DC bidirectional power electronic module, and each AC / DC bidirectional power electronic module is interconnected through a DC bus; the on-site controller is used to control the power of each port of the multi-port energy router. The technical solution provided by the present invention realizes the capacity mutual assistance of the station transformer and the capacity sharing of the distribution network energy storage, increases the nearby absorption capacity of distributed power generation and the access capacity of electric vehicle charging piles, reduces the peak-to-valley difference of the distribution network power, takes into account the three-phase imbalance control and reactive power compensation of the station transformer, and improves the load rate of the distribution network equipment, thereby improving the safety, stability and economic operation level of the distribution network. Specifically:

[0054] The present invention adopts a multi-port energy router, and through the coordinated control of the power of each port, it realizes the balanced use of the transformer capacity in the adjacent distribution station area, achieves the purpose of overall dynamic capacity increase, and helps to solve the problem of alternating heavy overload and light load of the distribution transformer in a relatively short time.

[0055] The multi-port energy router of the present invention communicates with the substation fusion terminal through a high-speed power carrier on-site controller to obtain the operation information of the substation transformer, thereby reducing the difficulty of laying communication cables.

[0056] The present invention introduces a control cycle and an adjustment step into the control logic, and takes maintaining the DC side bus voltage within a reasonable range as a control reference means, which can converge quickly, ensure that the transformers in each distribution station area do not exceed the limit, and will not cause repeated fluctuations in the power of each module.

[0057] The energy router of the present invention can take into account both three-phase imbalance control and reactive power compensation in the substation area.

[0058] The above scheme is described in detail below.

[0059] Example 1

[0060] See attached Figure 1 , Figure 1 FIG. 1 is a main structural block diagram of a power coordination control system for adjacent distribution stations according to an embodiment of the present invention. Figure 1 As shown, the power coordination control system of adjacent distribution station areas in the embodiment of the present invention mainly includes:

[0061] A substation group consisting of at least 2 adjacent distribution substations, a multi-port energy router and a local controller; for example, a substation group consisting of 2-5 distribution substations;

[0062] Each AC port of the multi-port energy router is connected to the low-voltage side of the transformer of each distribution substation in the substation group through an AC connection line;

[0063] Each AC port of the multi-port energy router is an independent AC / DC bidirectional power electronic module, and each AC / DC bidirectional power electronic module is interconnected through a DC bus;

[0064] The local controller is used to perform power control on each port of the multi-port energy router, thereby realizing coordinated control between the ports and achieving capacity mutual assistance between transformers in the substation area.

[0065] In this embodiment, the DC port of the multi-port energy router is connected to the distributed power generation unit, energy storage unit and / or load through a DC / DC module.

[0066] Furthermore, the DC port of the multi-port energy router is interconnected with each AC port of the multi-port energy router through a DC bus, such as Figure 2 shown.

[0067] In this embodiment, the AC interconnection line is a 0.4 kV AC interconnection line, which adopts a three-phase four-wire or three-phase five-wire system.

[0068] In this embodiment, the control mode of the AC / DC bidirectional power electronic module is a constant power control mode. The power can be set individually, and the power size of each is given by the local controller.

[0069] In this embodiment, the DC bus voltage is determined according to the installed capacity of the energy router, and generally the DC bus voltage is 300-900V.

[0070] The voltage, current and related status signals of each transformer in each substation are sent to their respective fusion terminals. After the fusion terminal collects the relevant information, it sends the information to the distribution cloud master station (or other master station system) through the communication network. At the same time, the signal is injected into the AC line connected to the energy router using high-speed power carrier communication (HPLC). The local controller of the energy router collects the corresponding transformer information from the corresponding AC line, mainly including: three-phase voltage, three-phase current, three-phase frequency, three-phase forward and reverse active power, three-phase forward and reverse reactive power, power factor, substation variable load rate, transformer fault / alarm status, circuit breaker position status, etc. The local controller of the energy router maintains real-time communication with each port through the RS485 serial port or Ethernet port local communication method, monitors the operation information of each port, and controls the input or output power of the port. The equipment arranged near the energy router, such as photovoltaic DC / DC, energy storage DC / DC, load DC / DC, etc., accesses the operation information as an external signal and maintains information interaction with the local controller of the energy router.

[0071] The rated capacity of the power electronic conversion device at each port can be selected with reference to the rated capacity of the corresponding transformer, which is generally not more than 30% of the rated capacity of the transformer, and the input power is basically consistent with the output power under the most common operating conditions, that is, the total power flowing into the energy router is basically the same as the total power flowing out (Note: In actual projects, due to energy consumption issues, there will be a basically fixed small deviation, which can be measured according to actual operating conditions).

[0072] In this embodiment, Figure 3 As shown, the local controller is specifically used for:

[0073] Real-time monitoring of the load rate of transformers in each distribution station area;

[0074] Get the absolute value of the load rate, and get the maximum and minimum values;

[0075] Assume that the active power flows from the AC side to the DC side as positive, and vice versa as negative. When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is positive power, the active power emitted by the port corresponding to the maximum value is increased by P step When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is negative power, the active power absorbed by the port corresponding to the maximum value is increased by P step ;

[0076] Among them, P step is the preset adjustment step.

[0077] The active power of the energy router port corresponding to the transformer in the substation with the smallest load rate is adjusted accordingly to maintain the DC bus voltage within a reasonable range, ensuring that DC distributed generation can be connected to the grid normally and that DC loads can use electricity normally.

[0078] If after dynamic capacity balancing, the power of some transformers in the substation area still exceeds the limit, the distribution network energy storage at the DC port can be called upon to participate in power control to control the charging and discharging power of the energy storage.

[0079] The local controller of the energy router also supports manual control function, that is, manually specifying the active power of some ports, and automatically tracking and adjusting the power of the remaining ports, so as to meet the requirements of maintaining the DC side bus voltage within a reasonable range, ensuring that DC distributed generation can be normally connected to the grid, and DC loads can use electricity normally.

[0080] Regardless of manual mode or automatic mode, at least one port of the energy router operates in power tracking mode to maintain a balance between the power flowing into and out of the energy router.

[0081] The local controller of the energy router can send the operation information to the power distribution cloud master station (or other master station system) through the communication collection and forwarding equipment, and accept the remote control of the latter. When remote control is adopted, the energy router operates in manual mode.

[0082] In one embodiment, the local controller is specifically used for:

[0083] When the three-phase current imbalance of the distribution station area transformer exceeds the set value, the three-phase asymmetric operation of the corresponding port is controlled to compensate for the unbalanced current.

[0084] In one embodiment, the local controller is specifically used for:

[0085] When the power factor of the transformer in the distribution station area exceeds the set value, the corresponding port is controlled to emit or absorb reactive power to perform reactive compensation on the corresponding transformer.

[0086] The local controller of the energy router coordinates the power flowing in or out of each port to maintain the DC bus voltage within a reasonable range. On this basis, it controls the power flow direction of each port so that the active power flows from the light-load transformer to the heavy-load transformer, dynamically balancing the burden of the heavy-load transformer and improving the load rate of the light-load transformer.

[0087] Example 2

[0088] The present invention also provides a control method for a power coordination control system in an adjacent distribution station area, the method comprising:

[0089] Real-time monitoring of the load rate of transformers in each distribution station area;

[0090] Get the absolute value of the load rate, and get the maximum and minimum values;

[0091] Assume that the active power flows from the AC side to the DC side as positive, and vice versa as negative. When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is positive power, the active power emitted by the port corresponding to the maximum value is increased by P step When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is negative power, the active power absorbed by the port corresponding to the maximum value is increased by P step ;

[0092] Among them, P step is the preset adjustment step.

[0093] Preferably, the real-time monitoring of the load rate of each distribution station area transformer includes:

[0094] Each distribution substation uploads its own transformer information to the fusion terminal within the distribution substation;

[0095] The fusion terminal uploads the transformer information to the distribution cloud master station through the communication network, and uses high-speed power carrier communication to inject the transformer information into the AC communication line connected to the energy router;

[0096] The local controller collects transformer information from the AC bus through local communication.

[0097] Furthermore, the transformer information includes at least one of the following: three-phase voltage, three-phase current, three-phase frequency, three-phase forward and reverse active power, three-phase forward and reverse reactive power, power factor, substation load factor, transformer fault / alarm status, and circuit breaker position status.

[0098] Furthermore, when the three-phase current imbalance of the distribution station area transformer exceeds the set value, the three-phase asymmetric operation of the corresponding port is controlled to compensate for the unbalanced current.

[0099] Furthermore, when the power factor of the transformer in the distribution station area exceeds the set value, the corresponding port is controlled to emit or absorb reactive power to perform reactive compensation on the corresponding transformer.

[0100] Example 3

[0101] Based on the same inventive concept, the present invention also provides a computer device, which includes a processor and a memory, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding function, so as to implement the control method steps of a power coordination control system adjacent to the distribution station area in the above embodiment.

[0102] Example 4

[0103] Based on the same inventive concept, the present invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device for storing programs and data. It can be understood that the computer-readable storage medium here can include both built-in storage media in a computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by a processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the control method steps of a power coordination control system adjacent to a distribution station area in the above embodiment.

[0104] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0105] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0106] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0107] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A power coordination control system for adjacent distribution station areas, characterized in that: The system comprises: a substation group consisting of at least two adjacent distribution substations, a multi-port energy router and a local controller; Each AC port of the multi-port energy router is connected to the low-voltage side of the transformer of each distribution substation in the substation group through an AC connection line; Each AC port of the multi-port energy router is an independent AC / DC bidirectional power electronic module, and each AC / DC bidirectional power electronic module is interconnected through a DC bus; The local controller is used to perform power control on each port of the multi-port energy router.

2. The system according to claim 1, characterized in that The DC port of the multi-port energy router is connected to the distributed generation unit, energy storage unit and / or load through a DC / DC module.

3. The system according to claim 2, characterized in that The DC port of the multi-port energy router is interconnected with each AC port of the multi-port energy router through a DC bus.

4. The system according to claim 1, characterized in that The AC interconnection line is a 0.4kV AC interconnection line, which adopts a three-phase four-wire or three-phase five-wire system.

5. The system according to claim 1, characterized in that The control mode of the AC / DC bidirectional power electronic module is a constant power control mode.

6. The system according to claim 1, wherein: The voltage of the DC bus is 300-900V.

7. The system according to claim 1, characterized in that The local controller is specifically used for: Real-time monitoring of the load rate of transformers in each distribution station area; Get the absolute value of the load rate, and get the maximum and minimum values; Assume that the active power flows from the AC side to the DC side as positive, and vice versa as negative. When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is positive power, the active power emitted by the port corresponding to the maximum value is adjusted to increase P step When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is negative power, the active power absorbed by the port corresponding to the maximum value is increased by P step ; Among them, P step is the preset adjustment step.

8. The system according to claim 7, characterized in that The local controller is specifically used for: When the three-phase current imbalance of the distribution station area transformer exceeds the set value, the three-phase asymmetric operation of the corresponding port is controlled to compensate for the unbalanced current.

9. The system according to claim 7, characterized in that The local controller is specifically used for: When the power factor of the transformer in the distribution station area exceeds the set value, the corresponding port is controlled to emit or absorb reactive power to perform reactive compensation on the corresponding transformer.

10. A control method for the power coordination control system of adjacent distribution station areas based on any one of claims 1-9, characterized in that: The method comprises: Real-time monitoring of the load rate of transformers in each distribution station area; Get the absolute value of the load rate, and get the maximum and minimum values; Assume that the active power flows from the AC side to the DC side as positive, and vice versa as negative. When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is positive power, the active power emitted by the port corresponding to the maximum value is adjusted to increase P step When the load rate upper limit exceeds the load rate upper limit and the real-time active power of the port corresponding to the maximum value is negative power, the active power absorbed by the port corresponding to the maximum value is increased by P step ; Among them, P step is the preset adjustment step.

11. The method according to claim 10, characterized in that The real-time monitoring of the load rate of each distribution station area transformer includes: Each distribution substation uploads its own transformer information to the fusion terminal within the distribution substation; The fusion terminal uploads the transformer information to the distribution cloud master station through the communication network, and uses high-speed power carrier communication to inject the transformer information into the AC communication line connected to the energy router; The local controller collects transformer information from the AC bus through local communication.

12. The method according to claim 11, characterized in that The transformer information includes at least one of the following: three-phase voltage, three-phase current, three-phase frequency, three-phase forward and reverse active power, three-phase forward and reverse reactive power, power factor, substation load factor, transformer fault / alarm status, and circuit breaker position status.

13. The method according to claim 11, characterized in that When the three-phase current imbalance of the distribution station area transformer exceeds the set value, the three-phase asymmetric operation of the corresponding port is controlled to compensate for the unbalanced current.

14. The method according to claim 11, characterized in that When the power factor of the transformer in the distribution station area exceeds the set value, the corresponding port is controlled to emit or absorb reactive power to perform reactive compensation on the corresponding transformer.

15. A computer device, characterized in that: include: one or more processors; The processor is configured to execute one or more programs; When the one or more programs are executed by the one or more processors, the control method of the adjacent distribution station area power coordination control system as described in any one of claims 10 to 14 is implemented.

16. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed, the control method of the power coordination control system of adjacent distribution station areas as claimed in any one of claims 10 to 14 is implemented.

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