Power distribution network double-layer coordination planning method with distributed generation based on time sequence characteristic analysis

Abstract

The invention discloses a power distribution network double-layer coordination planning method with distributed generation (DG) based on time sequence characteristic analysis, wherein the method relates to the field of power distribution network planning. The method is characterized by comprising the following steps of analyzing the time sequence characteristic; determining a planning content; establishing a double-layer coordination planning model; determining annual investment and operation maintenance cost of DG in a lower-layer DG configuration, annual reduction loss caused by grid connection, annual power generation amount maximal node voltage and desired value of rated voltage deviation amount; determining the annual investment and operation maintenance cost of the system, the annual active network loss cost of the system, the annual electric power purchasing cost of the power distribution network, annual fault power failure loss cost, system node voltage and the anticipated value of the rated voltage deviation amount; and planning the power distribution network with DG under the restriction. According to the method of the invention, the corresponding time sequence characteristic is analyzed, and influence between the DG and a power distribution network frame is considered, and a vertical double-layer multi-target coordination planning model is constructed for realizing purposes of optimizing an integral comprehensive decision and optimizing DG grid connection benefit.

Description

technical field [0001] The invention relates to the field of distribution network planning, in particular to a two-layer coordinated planning method for a distribution network containing distributed power sources based on time series characteristic analysis. Background technique [0002] With the spread of the energy crisis and the increasing demand for electric energy, the penetration rate of distributed generation (DG), including renewable energy generation, in the power grid is gradually increasing. Distributed power generation is constantly being valued for its energy saving, clean and environmentally friendly features, and the grid-connected scale continues to expand. However, its large penetration makes the distribution network gradually become an active distribution network and brings new problems, which in turn increases the burden of distribution network planning. complexities and pose new challenges. [0003] The traditional distribution network planning is based ...

AI Technical Summary

Problems solved by technology

At the same time, the site selection and capacity determination of DG and the planning of the distribution network frame often affect each other. In order to achieve the optimal comprehensive planning of the two, the traditional distribution network planning is no longer suitable. Further research on the distributed power supply and distribution network frame Coordinated planning is necessary

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