An Improved Harmony Search Algorithm for Reactive Power Optimization of Complex Distribution Networks

Abstract

The invention provides an improved reactive power optimization method of a complex distribution network based on an improved harmony search algorithm. The method includes: establishing a reactive power optimization model of a distribution network; establishing a harmony memory data warehouse; initializing a harmony vector; calculating each The fitness function value of the harmony vector; update the harmony memory data warehouse; perform hierarchical clustering on the harmony memory data warehouse to obtain each cluster. The technical solution provided by the invention integrates all the scenes that appear in the historical calculation to construct the harmony memory data warehouse, and uses the hierarchical clustering thought to guide and update the acoustic vector to increase the utilization of calculation, reduce the total amount of calculation and improve the optimization ability effect.

Description

Technical field [0001] The present invention relates to the field of operation technology of distribution network, and in particular to a complex distribution network reactive optimization method of an improved and sound search algorithm. Background technique [0002] Reactive optimization can improve the voltage quality, reduce network loss, which is a nonlinear planning problem with reactive compensation or adjustment equipment. The traditional voltage reactive optimization has the following main problems: due to the grading management of the grid, there is a problem of reactive power repeatability, and due to the cumbersome operation, it has not only increased electricity cost, but also the multi-level equipment investment is low, comprehensive The effect is poor; in addition, the traditional reactive optimization method is often functional, and when processing the large-scale distribution network, it is often slow and the convergence is poor. The distribution network is more ...

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Problems solved by technology

[0003] The reactive power optimization method of an improved harmony search algorithm for complex distribution networks proposed by the present invention aims to solve a large number of scenarios and calculation results that appear during the operation of the harmony search algorithm, build a harmony memory data warehouse, and use Hierarchical clustering algorithm guides the evolution of harmonic vectors, improves computing utilization and algorithm optimization capabilities, and more quickly and effectively solves reactive power optimization problems in large-scale distribution networks aimed at reducing network losses and voltage deviations, and promotes The development of cutting-edge new technologies in the distribution network has greatly improved the analysis level of distribution network operation, and provided stronger, longer-term and deeper support for power grid production, operation and management from the perspective of distribution network planning, design, and regulation and operation.

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