Method and device for optimizing reactive power of power distribution network containing distributed generation

Abstract

The invention provides a method and a device for optimizing the reactive power of a power distribution network containing distributed generation. The method comprises the steps of setting up a power distribution network reactive power optimization genetic algorithm model according to the preset control parameters of the power distribution network containing distributed generation and a genetic algorithm model, performing load flow calculation on the preset control parameters of the power distribution network to determine the equality constraints of the reactive power optimization of the power distribution network reactive power optimization genetic algorithm model, determining the inequality constraints of the power distribution network reactive power optimization genetic algorithm model according to the positions of controllable transformer taps, each node voltage, the output power of parallel reactive compensation capacity generators and the power factor of the high voltage side of each node distribution transformer in the control parameters of the power distribution network, and generating a reactive power optimization result according to a preset priority parameter, the equality and inequality constraints of the reactive power optimization and the reactive power optimization genetic algorithm model. The method and the device for optimizing the reactive power of the power distribution network containing distributed generation in real time have the advantages that less information is requested for solving problems, the solving process is simple and the optimal solution or the second-belt solution can be obtained with a great probability.

Description

technical field [0001] The invention relates to electric power technology, in particular to a reactive power optimization method and device for a distribution network including distributed power sources. Background technique [0002] At present, with the increasing power consumption, the stability and economic operation of the power grid have been paid more and more attention. The poor power quality of the power grid not only affects the power enterprise itself, but also affects the safety of the power system. The reactive power optimization and reactive power compensation of the power system are important components of the safe operation of the power system. The rational configuration of the power system and the optimal compensation of the reactive load can not only improve the stability of the power system operation, but also reduce the Network loss, so that the power system operates safely and economically. [0003] Reactive power optimization means that when the system ...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, the traditional algorithms for reactive power optimization problems are divided into linear and nonlinear programming. The disadvantage is that the objective function and constraint conditions must be continuous and differentiable, and the requirements for the initial point are relatively high.

In addition, it is difficult to deal with discrete variables

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