Active power distribution network voltage reactive power optimization control strategy comprehensive evaluation method and system

Abstract

The invention discloses an active power distribution network voltage reactive power optimization control strategy comprehensive evaluation method and system. Economy, device performance, voltage quality and safety criteria are comprehensively considered. Firstly, a comprehensive evaluation module of a double-layer reactive voltage coordination control strategy containing a macroscopic criterion layer and a microcosmic index layer is established; secondly, based on a DEMATEL-ANP-anti-entropy weight method and an improved grey relational degree analysis method, a weight calculation method integrating subjective and objective factors is provided; secondly, performing quantitative scoring on each index based on an index scoring quantitative function of a Polynomial difference method; and finally, calculating the score of each index, and obtaining a comprehensive evaluation result of the control strategy in combination with the corresponding weight coefficient. The method provided by the invention is applied to active power distribution network voltage reactive power optimization control strategy evaluation, has very strong comprehensiveness and effectiveness, and can provide powerful decision support for subsequent voltage reactive power control strategy research and investor selection of an optimal investment construction scheme.

Description

technical field [0001] The invention relates to the technical field of active distribution network control, and specifically relates to a comprehensive evaluation method and system for an active distribution network voltage and reactive power optimization control strategy. Background technique [0002] With the increasing penetration of distributed energy in the power grid, there is a trend of large-scale development. In order to deal with the severe fluctuation of the node voltage of the active distribution network caused by the intermittence of distributed generation, domestic and foreign scholars have proposed an optimal control method for reactive power and voltage of the active distribution network involving distributed energy access. With the in-depth development of reactive power and voltage control technology, it is more important to conduct a comprehensive and effective evaluation of various reactive power and voltage control technologies, which can better guide inv...

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Problems solved by technology

Although the above methods comprehensively consider the economic benefits and voltage quality indicators, they do not take into account the reactive power compensation equipment performance, safety and other indicators used in the reactive power and voltage control strategy. The evaluation system is not comprehensive enough, and the index weight extraction method is subject to subjective Factors have greater influence

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