Method for evaluating reactive power adequacy of power system based on heuristic energy function

Abstract

The invention relates to a method for evaluating reactive power adequacy based on the heuristic energy function. Aiming at the defect that evaluation of reactive power adequacy in the prior art is not global and is low in precision, the invention discloses a method for evaluating reactive power adequacy of a power system based on the heuristic energy function, which is used for evaluating reactive power adequacy limit of the power system in the system global angle of view in a highly precise and rapidly fast manner. The technical scheme of the invention is as follows: the method comprises the following steps: a. introducing critical voltage of each node in an optimized multiplier measuring system; b. establishing a heuristic energy function model of the system and computing the critical energy of each node in the system; c. computing the global critical energy of the system; and d. obtaining the reactive power adequacy limit of the load nodes according to the critical energy of each load node. The method is mainly used for evaluating the reactive power adequacy of the power system and provides basis for reactive power compensation of the system.

Description

technical field The present invention relates to the technical field of power system stability, in particular to the reactive power compensation technology of the power system, to be exact, a reactive power adequacy evaluation method based on a heuristic energy function. Background technique In recent years, due to the extensive use of nonlinear loads and inductive loads, the reactive power imbalance in the power system has become more serious, leading to voltage instability or even collapse, affecting the safe operation of the power grid. Capacitors, static var compensators (SVC) and novel var generators (ASVG) are the main devices for reactive power compensation in power systems. In order to realize the economical and effective reactive power compensation of the power system, it is necessary to make a correct evaluation of the reactive power margin of the power system, which is the key technology to realize the reactive power compensation. For complex power systems with m...

AI Technical Summary

Problems solved by technology

The technical problem to be solved in the present invention is to provide a reactive power adequacy evaluation method based on a heuristic energy function for the non-global and low-accuracy shortcomings of the prior art reactive power adequacy evaluation. High-precision and relatively fast evaluation of power system reactive power adequacy limit

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