Improved particle swarm algorithm-based optimized configuration method of distributed electrical connection power distribution system

Abstract

The invention provides an improved particle swarm algorithm-based optimized configuration method of a distributed electrical connection power distribution system. The optimized configuration method comprises the following steps: 1, inputting optimized configuration calculation parameter data, initializing particles and the flying speed of a particle swarm and a connected distributed power factor; 2, selecting an optimized configured type, selecting an entrance according to distributed power optimized configuration scheme types, namely addressing tolerance, sizing location optimization and location optimization and tolerance with a specified access number N; 3, selecting an optimization configuration goal and recording power distribution system parameters and distributed power system parameters, wherein the parameters includ system grid loss and average voltage level parameters; 4, performing optimized configuration calculation, performing fundamental wave load flow calculation and harmonic load flow calculation under each particle to obtain the system node voltage, the system fundamental wave loss and the harmonic loss under the particle, and then calculating a system node deviation index and a system total loss index; and 5, checking and outputting the result of the optimized configuration calculation.

Description

technical field [0001] The invention specifically relates to an optimized configuration method for a distributed power access distribution system based on an improved particle swarm algorithm, and belongs to the field of power systems. Background technique [0002] The distributed power generation technology using renewable energy as primary energy meets the requirements of human beings to develop a low-carbon economy and achieve sustainable development in the 21st century, so it has attracted great attention worldwide. The access of DG makes the power distribution system from passive network into an active network. The access position, capacity and operation mode of DG will have a great impact on the node voltage, line power flow, network loss and harmonic injection of the distribution network, and the degree of influence is closely related to the access position, capacity and operation mode of DG. Therefore, it is very important to choose the access location and installat...

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Problems solved by technology

[0004] The optimal configuration calculation of distributed power multi-target access addresses and installation capacity belongs to the category of distributed power planning. According to the introduction of the above technical background, the existing technologies focus on theoretical research from different angles, and some research results have been obtained. The optimal configuration model and algorithm of the system still have the following problems to varying degrees: 1. The multi-objective optimization such as system network loss, average voltage level and node total harmonic voltage distortion rate that needs to be considered more in practice has not been taken into account, making the distribution The optimal configuration calculation of traditional power supply lacks diversity and flexibility; 2. The optimal configuration calculation scheme and calculation results lack engineering practical applicability

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