Comprehensive evaluation method for coordination of power supply capacity of urban power transmission and distribution network

Abstract

The invention relates to a comprehensive evaluation method for coordination of power supply capacity of an urban power transmission and distribution network. The method comprises the following steps of: (1) building an evaluation index system for the power supply capacity of the urban power network based on coordination of transmission and distribution, wherein the evaluation index system comprises a power network margin evaluation index, a structure evaluation index, a matching evaluation index and an operation evaluation index; (2) establishing evaluation characteristic functions of all the indexes in the evaluation index system for the power supply capacity of the urban power network; and (3) building a comprehensive evaluation mathematical model of the power supply capacity of the urban power network based on coordination of transmission and distribution. The invention provides the index system which is completely suitable for evaluating the power supply capacity of the urban power network by using an idea of coordinating the power transmission and distribution network, and provides an evaluation index calculation model, an evaluation characteristic function theory expression and a comprehensive evaluation algorithm model by aiming at the evaluation indexes. According to the comprehensive evaluation method, the safety and reliability of the urban network are ensured, and a network structure is optimized so as to optimize the power network investment structure, so that the comprehensive evaluation method has great realistic significance for improving the economic benefit and the social benefit of enterprises.

Description

technical field [0001] The invention belongs to the field of urban power grids, in particular to a comprehensive evaluation method for coordination and matching of power supply capacity of urban transmission and distribution networks. Background technique [0002] The urban power grid is an important infrastructure of the city and an important material guarantee for the development of the national economy and social progress. In recent years, the urban power grid has undergone large-scale construction and transformation, and the power supply capacity, reliability and quality of power supply have been significantly improved. With the rapid development of China's national economy, the growth of power load has accelerated significantly, and the development of urban power grids is facing new opportunities and challenges. The assessment of power supply capacity of power grids is an essential part of power grid planning. At present, power supply enterprises in most cities lack re...

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Problems solved by technology

At present, power supply enterprises in most cities lack relevant experience, evaluation standards and evaluation systems for the evaluation of urban power grid power supply capacity, and at the same time, effective analysis methods have not yet been formed

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