Power distribution terminal state evaluation index weight distribution method

Abstract

The invention relates to a power distribution automation technology, in particular to a power distribution terminal state evaluation index weight distribution method, and multiple evaluation indexes of a power distribution terminal comprise a target layer, a criterion layer and an index layer. The method comprises the following steps: endowing each evaluation index of the power distribution terminal with an initial weight by adopting an attribute analytic hierarchy process (AHM) weighting method according to multiple evaluation indexes in a criterion layer; endowing multiple evaluation indexesin the index layer with initial weights of the evaluation indexes of the power distribution terminal by adopting a grey correlation degree method; and jointly calculating each index state parameter in the index layer and the corresponding initial weight to serve as each index state evaluation value of the power distribution terminal in the criterion layer. According to the method, the problem ofsmall sample data is solved by using a grey correlation degree method, a distribution rule is accurately and reliably obtained, and meanwhile, the calculated amount is reduced; the characteristics ofa subjective weighting method and an objective weighting method are combined, so that the complicated calculation process is reduced; meanwhile, subjective factors excessively depending on expert experience are avoided, the weight of each state factor is objectively reflected, and consistency detection is omitted.

Description

technical field [0001] The invention belongs to the technical field of power distribution automation, and in particular relates to a weight distribution method of a power distribution terminal state evaluation index. Background technique [0002] The development of distribution automation system is one of the main directions to improve the reliability of power supply in my country's distribution network and promote the optimal operation of distribution network. The power distribution automation system monitors the operating status of each electrical equipment in real time by collecting the state quantities of feeders; it realizes the control of voltage quality and load balance by reasonably controlling the status of the sub-stations; Information interaction realizes protection measures such as fault detection, isolation, and power supply in non-faulty areas; intelligent software is used to reasonably dispatch the power distribution side, feeder section, and power supply side...

AI Technical Summary

Problems solved by technology

[0005] At present, the main problems faced by the weight distribution of power distribution terminal evaluation indicators are as follows: (1) power distribution terminals are equipment that have been widely used in the past ten years, and the accumulation of on-site state data for each evaluation index is small; (2) power distribution terminals There are many types of evaluation indicators, the distribution rules are not clear, and the dimensions are not uniform

These problems lead to inaccurate weights of distribution terminal evaluation indicators in the project site, lack of systematic analysis and methods

[0006] In fact, at present, the weight selection of each evaluation index of the power distribution terminal generally only uses the analytic hierarchy process or the entropy weight method to analyze the weight of the evaluation index respectively. It is separated from the actual operation of the power distribution terminal, and the calculation process is cumbersome

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