Sensitivity calculation method for structural parameters of distribution network based on fault correlation matrix

Abstract

A method for calculating the sensitivity of distribution network structural parameters based on fault correlation matrix. It includes constructing distribution network fault parameter vectors, node load demand vectors, and node user number vectors as the basic input data for the next step sensitivity calculation; for the original structure of the distribution network, analyze the connection relationship between branch elements, switching elements, and load nodes , to construct three original fault correlation matrices; according to the change of network parameters, change the original structure of the distribution network to construct a new fault correlation matrix; substitute the original fault correlation matrix, the new fault correlation matrix and the basic input data into the sensitivity calculation formula, Steps such as obtaining sensitivity indexes of different network parameters. The effect of the present invention: it can avoid a large number of repetitive calculations of reliability indicators in the reliability analysis process, improve calculation efficiency, and also make the sensitivity comparison of various influencing factors clearer and more intuitive, and provide targeted reliability improvement projects Powerful analysis tools and means are provided.

Description

technical field [0001] The invention belongs to the technical field of power distribution, and in particular relates to a method for calculating the sensitivity of distribution network structural parameters based on a fault correlation matrix. Background technique [0002] Since the distribution network directly supplies power to power users, it has a significant impact on the reliability level of power users. With the development of society, the reliability requirements of power users are constantly increasing. Therefore, aiming at the weak links that affect the reliability of the distribution network, it has become an important task to evaluate the reliability of the distribution network to take targeted reliability improvement measures. [0003] In order to effectively improve the reliability of the distribution network, it is sometimes necessary to change the network parameters. These measures include installing circuit breakers, installing section switches, adding tie ...

AI Technical Summary

Problems solved by technology

This method leads to the repeated calculation of a large number of reliability indicators. Therefore, it is necessary to develop a method for directly obtaining the sensitivity of the distribution network without repeated calculation of a large number of reliability indicators.

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