A grid structure evaluation method based on distribution network reliability improvement

Abstract

The utility model relates to a grid structure evaluation method based on distribution network reliability improvement, which comprises the following five steps: firstly, defining the concrete contentsof each level index system; Secondly, establishing the scoring standard based on the membership function of single-point fuzzy evaluation. 3, carrying out weight distribution on indicators at variouslevel; Fourthly, the method of optimizing combination model based on moment estimation theory is adopted to evaluate the weights comprehensively. Fifthly, calcuating the comprehensive score of the whole evaluation object from bottom to top. The patent of the invention can evaluate each index according to several feasible schemes in the planning and transformation process of the 110 kV power gridframe, and then compare the technical economy of the indexes, and finally generate an evaluation result so as to select an optimal scheme. The invention can quantify a plurality of qualitative analysis results, more accurately give the comprehensive level of a plurality of schemes, the evaluation result is more accurate, and has an important guiding and basis function for the planning, design andreconstruction work of the 110 kV power network network frame.

Description

technical field [0001] The invention relates to the field of network frame evaluation, in particular to a network frame evaluation method based on distribution network reliability improvement. Background technique [0002] In recent years, there has been an upsurge in the research and construction of smart grids worldwide. As an important part of the power grid, the planning, design and transformation of the 110kV grid grid is of great significance. Carry out the research work on the establishment of the 110kV grid grid evaluation index system. By establishing a reasonable evaluation index system, it can provide a working basis for the planning of the 110kV grid grid. Conduct inspections to provide a strong basis for its transformation. [0003] The evaluation of 110kV power grid grid structure is a multi-attribute complex problem. Usually, the overall goal is decomposed into multi-level indicators, and then the weight coefficients of each level of indicators are obtained....

AI Technical Summary

Problems solved by technology

[0003] The evaluation of 110kV power grid grid structure is a multi-attribute complex problem. Usually, the overall goal is decomposed into multi-level indicators, and then the weight coefficients of each level of indicators are obtained. However, most studies have not considered that the weight needs to be combined subjectively and objectively, so the accuracy of the evaluation results has been affected. affected

At the same time, the rationality of the indicators needs to be improved

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