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

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...

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.

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