CN-122001028-A - Cooperative control method, system, equipment and medium for power distribution area inverter

CN122001028ACN 122001028 ACN122001028 ACN 122001028ACN-122001028-A

Abstract

The invention relates to the technical field of power system automation, and discloses a cooperative control method, a system, equipment and a medium for an inverter in a power distribution station, wherein a distributed authentication platform is constructed to carry out identity authentication on the inverter in the power distribution station, a logic neighbor network of the inverter is constructed, the operation capacity of the inverter is determined according to physical constraint and power operation data of the inverter, a multi-time scale coordination framework is constructed according to real-time requirements of the power distribution station to determine a bidding strategy set of the inverter, a station clearing model considering the safety of the power distribution station is constructed, the clearing model is solved according to the logic neighbor network and a distributed optimization algorithm to obtain a power control instruction of the inverter, a distributed authentication platform is used for monitoring the power grid operation state of the power distribution station, and a safety check algorithm is started to correct the power control instruction to obtain a power correction instruction to control the execution of the inverter when risk is triggered, and the fine cooperation of the station level is realized under the condition of considering safety and cost.

Inventors

ZHANG JIARUI
WANG SHAOYUAN
TU YONGWEI
LI YINGYING
ZHOU YANGJIE
XIANG XINYU
LIU HONGWEI
CHENG YU
ZHOU HONGLEI
XIA LIN
LUO QING
XU JINGWEN
XU JIAXUAN

Assignees

国网浙江省电力有限公司杭州供电公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (10)

1. A power distribution block inverter cooperative control method, characterized by comprising: Constructing a distributed authentication platform, and carrying out identity authentication on an inverter in a power distribution area based on the distributed authentication platform so as to construct a logic neighbor network of the inverter; Constructing a four-quadrant operation capacity model according to the physical constraint and the power operation data of the inverter, and constructing a multi-time scale coordination frame based on the real-time requirement of the power distribution area so as to determine a strategy set of the inverter by combining the four-quadrant operation capacity model; Constructing a district clearing model considering the safety of a distribution district based on the four-quadrant operation capability model and the strategy set, and solving the district clearing model through the logic neighbor network and a distributed optimization algorithm to obtain a power control instruction of the inverter; And monitoring the running state of the power grid of the power distribution station through the distributed authentication platform, and starting a safety check algorithm to correct the power control instruction when risk triggering is monitored, so as to obtain a power correction instruction to control the inverter to execute.
2. The method according to claim 1, wherein the constructing a distributed authentication platform, and performing identity authentication on the inverter in the power distribution area based on the distributed authentication platform, so as to construct a logic neighbor network of the inverter, comprises: selecting a plurality of physical nodes in the distribution area to form a multi-node consensus architecture, adopting a consensus algorithm to perform information interaction among the physical nodes so as to agree on transaction sequence and state change, writing intelligent contracts through Go language, deploying the intelligent contracts into a blockchain network, and storing transaction key data and power operation data of the inverter into the blockchain network through an on-chain and off-chain collaborative storage mode to form the distributed authentication platform; Constructing an inverter node based on the inverter to access the distributed authentication platform so as to carry out identity authentication on the inverter and obtain a digital identity issued by the blockchain network and belonging to the inverter; And controlling the inverter to search a plurality of inverters which are closest to the electric distance and are accessed to the distributed authentication platform through a network topology discovery algorithm to serve as logic neighbors, and establishing a P2P encryption communication channel with the logic neighbors to form the logic neighbor network.
3. The method for cooperative control of an inverter in a power distribution substation according to claim 2, wherein the constructing a four-quadrant operation capability model according to physical constraints and power operation data of the inverter comprises: based on the power operation data, with active power and reactive power as coordinate axes, a closed operation feasible region is defined according to the apparent power, the current active power and the power range of the inverter; dynamically solving an active power adjustable range and a reactive power adjustable range in the operation feasible domain under the current operation point of the inverter to obtain the adjustable range of the inverter; And determining operation cost data according to the apparent power and the corresponding gain loss, and combining the operation feasible region, the adjustable range and the operation cost data to obtain the four-quadrant operation capacity model.
4. A method of collaborative control of power distribution substation inverters according to claim 3 wherein said constructing a multi-time scale coordination framework based on real-time demand of the power distribution substation to determine a set of policies of the inverter in conjunction with the four-quadrant operational capability model includes: acquiring weather forecast data and future production data of the power distribution station, and forecasting active power generation potential and reactive power regulation requirements of the inverter in a future preset period by combining the four-quadrant operation capability model to obtain a bidding strategy in a day-ahead stage with the maximum profit as a first target; According to the real-time requirement and the four-quadrant operation capability model, correcting the day-ahead stage bidding strategy by combining the four-quadrant operation capability model with the minimum prediction deviation and the minimum adjustment cost as a second target to obtain a day-in stage bidding strategy; And acquiring historical meteorological data and historical electricity price data of the power distribution area to construct a plurality of typical scenes, determining an optimal bidding strategy of each typical scene through a conditional risk value model and a random optimization algorithm, and combining the optimal bidding strategy with the intra-day stage bidding strategy to obtain the strategy set.
5. The method for collaborative control of an inverter in a power distribution substation according to claim 3, wherein the solving the substation clearance model through the logical neighbor network and a distributed optimization algorithm to obtain a power control instruction of the inverter comprises: Decomposing the platform zone clear model into a local optimization model of the inverter, and controlling the inverter to solve the local optimization model according to the four-quadrant operation capacity model to obtain a preliminary power scheme; The inverter is controlled to interact with adjacent inverter nodes based on the logic neighbor network to obtain global temporary consensus, so that the inverter corrects the preliminary power scheme according to the global temporary consensus to obtain a power correction scheme; Iteratively executing a model solving step and a scheme correcting step until the error between the power correcting schemes obtained twice continuously is smaller than a preset error, so as to obtain the total clear quantity of the station area; And converting the total clear quantity of the station area into a power control instruction of the inverter through a power distribution coordination mechanism.
6. The coordinated control method of a distribution block inverter according to claim 5, wherein the converting the block total output clearance into the power control instruction of the inverter by a power distribution coordination mechanism comprises: Determining the geographic position of the inverter according to the logic neighbor network, and taking the cost coefficient and the adjustment capacity determined according to the four-quadrant operation capacity model as constraint conditions; And decomposing the total output clearance of the transformer area into power control instructions of the inverters in the power distribution transformer area through a quadratic programming algorithm by taking the balanced load rate and the optimal cost as a third target and combining the constraint conditions.
7. A method of cooperative control of a power distribution block inverter according to claim 3, wherein the starting a safety check algorithm to correct the power control command to obtain a power correction command comprises: determining a target node based on the risk, controlling the target node to send the current deviation amount and the local sensitivity corresponding to the risk to an adjacent inverter node through the logic neighbor network, so that the target node calculates self contribution potential and adjustment cost based on the local sensitivity, and obtaining a comprehensive decision factor; And taking the minimized adjustment cost as a fourth target, determining constraint conditions based on the current deviation amount and each contribution potential, and solving the fourth target through a proportional distribution method based on a contribution factor and each adjustment cost to obtain a power adjustment amount so as to correct a self power control instruction to obtain a power correction instruction.
8. A power distribution block inverter cooperative control system, comprising: the network construction module is used for constructing a distributed authentication platform and carrying out identity authentication on the inverter in the power distribution area based on the distributed authentication platform so as to construct a logic neighbor network of the inverter; the strategy generation module is used for constructing a four-quadrant operation capacity model according to the physical constraint and the power operation data of the inverter, and constructing a multi-time scale coordination frame based on the real-time requirement of the power distribution area so as to determine a strategy set of the inverter by combining the four-quadrant operation capacity model; The instruction generation module is used for constructing a platform zone clearing model considering the safety of the power distribution platform zone based on the four-quadrant operation capability model and the strategy set, and solving the platform zone clearing model through the logic neighbor network and the distributed optimization algorithm to obtain a power control instruction of the inverter; The instruction correction module is used for monitoring the running state of the power grid of the power distribution station through the distributed authentication platform, and starting a safety check algorithm to correct the power control instruction when the risk triggering is monitored, so as to obtain a power correction instruction to control the inverter to execute.
9. An electronic device comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the power distribution grid section inverter cooperative control method according to any one of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored computer program, wherein the computer program is executed by a device in which the computer readable storage medium is located, to implement the power distribution grid inverter cooperative control method according to any one of claims 1 to 7.

Description

Cooperative control method, system, equipment and medium for power distribution area inverter Technical Field The invention relates to the technical field of power system automation, in particular to a cooperative control method, a cooperative control system, cooperative control equipment and a cooperative control medium for an inverter of a power distribution area. Background With the large-scale access of distributed energy sources, distribution areas gradually change from pure electric energy consumption units to active market bodies with production and consumption capabilities. The traditional power transaction mode is mainly oriented to large-scale power generation enterprises and users, and lacks an effective aggregation and collaboration mechanism for mass distributed resources. The existing inverter control strategies are mostly concentrated on local voltage support or island operation and cannot be effectively connected with an electric power market mechanism. Meanwhile, in recent years, the virtual power plant technology provides a solution for distributed resource aggregation, but the central control architecture has single-point fault risk, and fine coordination of the platform level is difficult to realize. Therefore, how to realize the fine coordination of the platform level while considering the market economy and the power grid safety has become a technical problem to be solved urgently by those skilled in the art. Disclosure of Invention The invention provides a cooperative control method, a cooperative control system, cooperative control equipment and a cooperative control medium for an inverter of a power distribution area, which solve the problem of realizing the fine cooperation of the area level while considering the market economy and the power grid safety. In order to solve the above technical problems, a first aspect of the present invention provides a cooperative control method for an inverter in a power distribution area, including: Constructing a distributed authentication platform, and carrying out identity authentication on an inverter in a power distribution area based on the distributed authentication platform so as to construct a logic neighbor network of the inverter; Constructing a four-quadrant operation capacity model according to the physical constraint and the power operation data of the inverter, and constructing a multi-time scale coordination frame based on the real-time requirement of the power distribution area so as to determine a strategy set of the inverter by combining the four-quadrant operation capacity model; Constructing a district clearing model considering the safety of a distribution district based on the four-quadrant operation capability model and the strategy set, and solving the district clearing model through the logic neighbor network and a distributed optimization algorithm to obtain a power control instruction of the inverter; And monitoring the running state of the power grid of the power distribution station through the distributed authentication platform, and starting a safety check algorithm to correct the power control instruction when risk triggering is monitored, so as to obtain a power correction instruction to control the inverter to execute. The second aspect of the present invention provides a power distribution area inverter cooperative control system, comprising: the network construction module is used for constructing a distributed authentication platform and carrying out identity authentication on the inverter in the power distribution area based on the distributed authentication platform so as to construct a logic neighbor network of the inverter; the strategy generation module is used for constructing a four-quadrant operation capacity model according to the physical constraint and the power operation data of the inverter, and constructing a multi-time scale coordination frame based on the real-time requirement of the power distribution area so as to determine a strategy set of the inverter by combining the four-quadrant operation capacity model; The instruction generation module is used for constructing a platform zone clearing model considering the safety of the power distribution platform zone based on the four-quadrant operation capability model and the strategy set, and solving the platform zone clearing model through the logic neighbor network and the distributed optimization algorithm to obtain a power control instruction of the inverter; The instruction correction module is used for monitoring the running state of the power grid of the power distribution station through the distributed authentication platform, and starting a safety check algorithm to correct the power control instruction when the risk triggering is monitored, so as to obtain a power correction instruction to control the inverter to execute. A third aspect of the present invention provides an electronic device comprising a processor, a memory and a comput