Distributed power supply access power distribution network planning method

Abstract

The present invention discloses a distributed power supply access power distribution network planning method. The method comprises: establishing the power distribution network extension planning model of a distributed power supply, wherein the power distribution network extension planning model is a mathematic model for the line operation cost, the distributed power supply construction cost and the purchasing electricity cost reduced through the reduction of the access of the distributed power supply, employing a genetic algorithm for solution, employing the adaptive genetic algorithm for planning of the distributed power supply, employing the genetic algorithm for extension planning of the network aiming at the individual of distributed power supply capacity and position generated by each generation in the genetic algorithm, adding the influence of the distributed power supply, and repairing non-feasible solution generated by the intersection and mutation operation in the genetic algorithm, and performing economic evaluation of the integrated planning result of the distributed power supply and the network. According to the actual condition of the distribution network structure and the capacity and the distribution position of the distributed power supply, and the problems of the planning of the distribution network, the site selection and the constant volume of the transformer station and the site selection of the distributed power supply are solved through adoption of the appropriate algorithm.

Description

technical field [0001] The invention relates to the field of new energy and distribution network planning, in particular to a planning method for distributed power generation (DG) accessing a distribution network. Background technique [0002] In recent years, new energy power generation dominated by wind power and photovoltaics has developed rapidly. Vigorously developing wind power and photovoltaics will help reduce fossil fuel consumption and reduce carbon emissions. Photovoltaic power stations and wind farms in the distribution network are generally connected in the form of distributed power sources. Because the wind speed and light are greatly affected by the weather, the output of wind farms and photovoltaic power stations is random, so the traditional distribution network planning method cannot Fully adapt to the grid-connected situation of distributed power. When a large number of distributed power sources appear in the planning scheme, a large number of random cha...

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Problems solved by technology

Most of the above studies only focus on the single planning of power distribution, while there are relatively few studies on the coordinated planning of distribution networks

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