Method for solving contribution value of distributed power supplies to line loss based on entropy weight principle

Abstract

The invention discloses a method for solving a contribution value of distributed power supplies to line loss based on an entropy weight principle. The method comprises the following steps that: data of a tested power distribution network including n distributed power supplies when all the n distributed power supplies are not in a grid-connected state and when all the n distributed power supplies are in a grid-connected state are acquired; an influence index system of the distributed power supplies to the line loss is established based on the acquired data; the contribution rate of each grid-connected distributed power supply to the line loss of the tested power distribution network is solved by adopting an entropy weight method; and thus, measurement of the contribution rate of each distributed power supply to the line loss of the tested power distribution network is realized. According to the invention, power flow calculation of the tested power distribution network when all the n distributed power supplies are not in the grid-connected state and when all the n distributed power supplies are in the grid-connected state is carried out respectively, such that the line loss contribution value of each grid-connected distributed power supply to the line loss of the tested power distribution network increased due to grid connection of the n distributed power supplies can be obtained by calculation.

Description

technical field

[0001] The invention relates to a method for measuring the contribution value of distributed power sources to distribution network line loss based on the principle of entropy weight. Background technique

[0002] The application of distributed power is more and more extensive, and the introduction and integration of distributed power into the existing distribution network system is the development trend of distributed power. However, with the increase of the grid-connected penetration rate of distributed power generation, its impact on distribution network line loss cannot be ignored, which has gradually attracted the attention of relevant staff such as power grid line loss calculation and distribution network planning.

[0003] The degree of influence of grid-connected distributed power generation on distribution network line loss depends on multi-source factors such as the access location of grid-connected distributed power generation, its relative size to ...

Images