A voltage and reactive power optimization control method with multi-type distributed power

Abstract

The invention relates to a voltage reactive power optimization control method containing multiple types of distributed power sources; the method can acquire autonomous optimized control combination strategy through the relationship of node voltage bias and reactive bias detected in real time according to the load time-dependent nature and the fluctuation property of the distributed power force, adjust the control variable, and reach the optimal control method. Compared with the prior art, the method overcomes a traditional mode of performing switching control through prediction data of the load and the distributed power force, determine the switching group of a parallel capacitor unit and reaction effort of the distributed power source, overcomes the previous fixed switching mode, and uses every intelligent networking automatic remote terminal as an automatic voltage regulator in a distributed control terminal combined feed wire to flexibly control voltage after the parallel capacitor performs the reactive compensation to guarantee sufficient reactive work; thus the voltage amplitude can be significantly stabilized, and the method has good online application prospect, and others.

Description

technical field [0001] The invention relates to the field of voltage and reactive power optimization control of distribution networks, in particular to a voltage and reactive power optimization control method including multi-type distributed power sources. Background technique [0002] As people's awareness of energy conservation, environmental protection and sustainable development is increasing, distributed generation (DG), as one of the main clean energy sources, is increasingly connected to the distribution network. After the DG is connected to the power grid, due to the fluctuation of its output and power load, the voltage will fluctuate greatly. [0003] Scholars at home and abroad have done a lot of research on distribution network voltage changes after DG access, distribution network reconfiguration, active and reactive power optimization, and distribution network voltage control methods, but most of them are aimed at the planning stage, that is, for the load The st...

AI Technical Summary

Problems solved by technology

In view of the fact that a large number of remote terminal units (Remote Terminal Unit, RTU) in distribution network automation have been widely used in distribution lines, it can be considered as a distributed control terminal combined with SVR in the feeder for voltage regulation. At present, Elkhatib M E, Homaee O, Raghavendra P et al. have also carried out relevant research, but they have never considered the premise that the reactive power of the grid must be guaranteed to be sufficient for voltage regulation using SVR, otherwise it may cause insufficient reactive power of the grid.

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