Power distribution network multi-dimensional typical scene generation method based on load clustering and network equivalence

Abstract

The invention relates to a power distribution network operation management technology, and specifically relates to a power distribution network multi-dimensional typical scene generation method basedon load clustering and network equivalence. The method comprises the following steps: 1, dividing load nodes into n types according to power fluctuation features, and dividing distributed power generation into photovoltaic power generation and wind power generation; 2, performing equivalent processing on the grid structure of the power distribution network, and simplifying the grid structure inton + 2 single-node power distribution networks; 3, respectively generating n + 1-dimensional and 1-dimensional typical scenes for voltage drops of equivalent lines of load / photovoltaic power generationand wind power generation; and 4, restoring the typical line voltage drop scene to each load / distributed power generation node power typical scene of the power distribution network. According to themethod, the problem of difficulty in voltage distribution evaluation in the power distribution network is solved, so that access position planning of distributed power supplies, loads, power electronic equipment and the like has a better effect. According to the multi-dimensional typical scene generation method, the calculation capability is not influenced by the number of nodes, and the multi-dimensional typical scene generation of the large-scale power distribution network operation state can be realized.

Description

technical field [0001] The invention belongs to the technical field of distribution network operation management, and in particular relates to a multi-dimensional typical scene generation method of a distribution network based on load clustering and network equivalence. Background technique [0002] With the development of modern cutting-edge manufacturing industry, users have higher and higher requirements for power supply quality. At the same time, the large number of distributed power generation and electric vehicle charging piles have caused great interference to the power system. In order to better improve the quality of power supply and reduce the impact of distributed power generation and electric vehicle charging pile access, it is very critical and necessary to evaluate the voltage distribution characteristics of the distribution network and select the best access location. However, considering the fluctuation and randomness of load and distributed generation, it is...

AI Technical Summary

Problems solved by technology

[0003] (1) The evaluation results of distribution voltage distribution characteristics obtained by selecting typical days and typical times are highly subjective, poor in convergence, and limited in accuracy

[0004] (2) The evaluation results of distribution network voltage distribution characteristics generated by typical scenarios ignore the differences in the fluctuation rules between different loads, the local characteristics are not obvious, the limitations are large, and the applicability is poor

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