Static var generator capacity and installation position selection method and system for power distribution network

Abstract

The invention discloses a method and system for selecting the capacity and installation position of a static var generator for a power distribution network, and the method comprises the steps: enabling the capacity Qi of reactive compensation equipment arranged at each node position of the power distribution network to form a chromosome gene, and enabling each chromosome to represent a scheme forthe site selection and capacity configuration of the reactive compensation equipment; forming a phenotype of the gene by adopting a plurality of target functions representing the operation effect andthe economic index of the reactive power compensation scheme, and taking the phenotype as a basis for gene selection; initializing a population and population algebra of the gene, and giving the maximum number of iterations; and if the current iteration is completed, outputting an optimization result, selecting a scheme with the minimum voltage square deviation, and determining the capacity and the installation position of the reactive power compensation equipment. According to the method and the system, the multi-objective optimization problem of reactive power compensation configuration canbe quickly and efficiently solved, and the method and the system have important engineering value and wide expansibility.

Description

technical field [0001] The invention belongs to the technical field of reactive power compensation for distribution networks, and in particular relates to a method and system for selecting the capacity and installation position of static var generators for distribution networks. Background technique [0002] In the plateau, mountainous and remote areas of western my country, sparse distribution networks with large coverage, low load density and few power points widely exist. At present, many problems in the operation of the 10kV sparse distribution network are increasingly exposed, mainly including: high per household investment in distribution network, poor economy; long power supply radius, large voltage loss, low power quality; large load changes, voltage adjustment Difficulties, conventional fixed reactive power compensation does not meet the operational requirements and other issues. In view of the above problems, it is necessary to study the long-distance distribution...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for selecting the capacity and installation location of static var generators for distribution networks, which solves the comparison problem of multiple objective functions. Calculate and obtain the two indicators of ranking level and crowding degree, avoiding the subjective factors of artificially determining the fitness function

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