Cooperative game method and trapezium-cloud model-based power distribution network operation state fuzzy and comprehensive evaluation method

Abstract

A cooperative game method and trapezium-cloud model-based power distribution network operation state fuzzy and comprehensive evaluation method is characterized by comprising the steps of considering the purposiveness, the systematicness, the operability, the independence, the significance and the dynamism, and constructing a multi-dimension hierarchical power distribution network index system based on the safety, the high quality, the economy, the Intelligence, the environmental protection property and the sustainability; utilizing a weight method, an entropy weight method, a anti-entropy weight method and a compatibility matrix analysis method to calculate the power distribution network index weights separately; carrying out the cooperative game on the determined weights to obtain an optimal combined weight; carrying out the variable weight correction on the combined weight to obtain a final weight value; dividing the evaluation grades of a power distribution network to obtain an evaluation set; calculating a trapezium-cloud model parameter that each index corresponds to each evaluation grade, utilizing a trapezium-cloud model to calculate the membership degree values of the indexes of the to-be-evaluated power distribution network, and calculating a membership degree vector and an evaluation result of the whole power distribution network layer by layer and upwards on a fuzzyand comprehensive evaluation frame.

Description

technical field [0001] The invention belongs to the field of distribution network comprehensive evaluation, and relates to a method for fuzzy comprehensive evaluation of distribution network operation state based on cooperative game method and trapezoidal cloud model. Background technique [0002] The distribution network is located at the end of the power system and is an important link in the power system to connect power sources and users. A safe and reliable distribution network is an important material basis for ensuring the sustained and stable development of the national economy and the continuous improvement of people's living standards. Scientific and reasonable distribution network planning is an important prerequisite for ensuring the stable operation of the power grid. The operation level and resource utilization rate of my country's distribution network are low. In order to improve the operation status of the distribution network, a comprehensive evaluation of ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a fuzzy comprehensive evaluation method for distribution network operation status based on cooperative game method and trapezoidal cloud model, which is scientific, reasonable, practical and effective, so as to solve the problem that the traditional fuzzy comprehensive evaluation method fails to fully consider randomness and The defect of ambiguity and the problem of hard boundary of interval division can improve the accuracy of the weight and avoid the situation that the fixed weight evaluation mode cannot reflect the real operation state of the distribution network

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