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Source-load coordinated voltage control method and device based on multiple agents

A voltage control method and multi-agent technology, applied in AC network voltage adjustment, charging stations, electric vehicles, etc., can solve the problem of poor effect, does not consider the influence of distribution network voltage control, and cannot guarantee voltage quality Distributed power consumption Capability and other issues to achieve the effect of improving reliability and ensuring voltage quality

Active Publication Date: 2021-08-13
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a multi-agent-based source-load coordinated voltage control method and device, which are used to solve the problem of voltage control caused by adding electric vehicle charging stations and distributed power sources to the distribution network without consideration in the prior art, so that the distributed The lack of pertinence and reliability of traditional control technology leads to poor distribution network voltage distribution control effect, and the technical problems that voltage quality and distributed power consumption capacity cannot be guaranteed.

Method used

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  • Source-load coordinated voltage control method and device based on multiple agents
  • Source-load coordinated voltage control method and device based on multiple agents
  • Source-load coordinated voltage control method and device based on multiple agents

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Experimental program
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Embodiment 1

[0068] For ease of understanding, see figure 1 , Embodiment 1 of a multi-agent-based source-load coordinated voltage control method provided by the present application includes:

[0069] Step 101. Obtain preset forecast curves, which include daily load forecast curves, distributed power output forecast curves, and electric vehicle agent demand forecast curves.

[0070] The daily load forecast curve refers to the load forecast of all relevant nodes in the distribution network; the distributed power output forecast curve is the output forecast of the distributed power supply DG in the distribution network; the electric vehicle intelligent body demand forecast curve is for the electric vehicle charging station. A class of load demand forecasts made. By obtaining the load demand in the distribution network and the output that the distribution network can provide, the load adjustment capability of the distribution network can be macroscopically controlled; the voltage control of t...

Embodiment 2

[0083] For ease of understanding, see figure 2 , the present application provides a second embodiment of a multi-agent-based source-load coordinated voltage control method, including:

[0084] Step 201. Acquire preset forecast curves, which include daily load forecast curves, distributed power output forecast curves, and electric vehicle agent demand forecast curves.

[0085] Please refer to step 101 for the meanings of obtaining various prediction curves, which will not be repeated here.

[0086] Step 202, solving the maximum peak-shaving objective function constructed from the preset prediction curve according to the first optimization constraint condition, and obtaining the ideal load dispatching curve of each electric vehicle agent.

[0087] The electric vehicle intelligent body is an independent entity, which can uniformly formulate the charging plan for each electric vehicle according to the time when the electric vehicles in the charging station enter the charging sta...

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Abstract

The invention discloses a source-load coordinated voltage control method and device based on multiple agents. The method comprises the following steps of: acquiring a preset prediction curve; solving a maximum peak clipping objective function constructed by a preset prediction curve according to the first optimization constraint condition to obtain an ideal load scheduling curve; realizing charging active power regulation control according to the ideal load scheduling curve; if the first node voltage is lower than the preset lower limit value, performing adaptive reactive power control according to the acquired total reactive power demand, the total active power output of distributed power supplies and the maximum total reactive power output of an inverter; and performing out-of-limit monitoring on the voltage of the second node in the partition, and executing a preset feeder line automatic compensation strategy when the voltage of the second node exceeds a preset voltage range. The technical problems that an existing distributed control technology lacks pertinence and reliability, so that the distributed control effect of the voltage of the power distribution network is poor, and the voltage quality and the absorption capacity of the distributed power supply cannot be guaranteed can be solved.

Description

technical field [0001] The present application relates to the technical field of distribution network voltage control, in particular to a multi-agent-based source-load coordinated voltage control method and device. Background technique [0002] With large-scale high-penetration electric vehicles (Electric Vehicle, EV) and distributed generation (distributed generation, DG) connected to the distribution network, on the one hand, due to the high power of fast charging of electric vehicles, it is easy to cause the access point The lower limit of the local voltage appears nearby. On the other hand, due to the randomness and intermittency of distributed power output, it is easy to cause voltage fluctuations at the grid-connected point. The negative effects of these two aspects will seriously affect the voltage quality of adjacent nodes and endanger the power supply of the regional power grid. Reliability, but also greatly limits the ability of the distribution network to accommod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12H02J3/16H02J3/50B60L53/00
CPCB60L53/00H02J3/12H02J3/16H02J3/50H02J2203/10Y02E40/30Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 洪锐媛杨智诚陈雄常吴柏涛岑建福罗伟坚胡志燊黄嘉豪李文亮
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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