Grid security comprehensive evaluation method

Abstract

The invention provides a grid security comprehensive evaluation method which includes that a set of complete two-stage in-advance comprehensive evaluation index system and an each-stage security evaluation index calculating method are built aiming at the requirement of grid security operation evaluation, a grid security comprehensive evaluation model based on a gray area correlation analysis method and the game theory is further provided, initial evaluation is conducted on each one-stage index by the model, an obtained evaluation result is subjected to comprehensive evaluation, a correlation coefficient matrix of each one-stage index is determined by adopting the gray area correlation analysis method, weights are obtained by utilizing a game collection model pair analytic hierarchy process (AHP), an artificial neural network (ANN) and an entropy weight method and are objectively combined to obtain a combined weight, initial evaluation is conducted on each one-stage index, the AHP is adopted to determine a one-stage index weight, and the one-stage index weight and an initial evaluation result are subjected to weighing calculation to further obtain a grid security comprehensive evaluation result, namely the grid security quality ordering.

Description

technical field [0001] The invention belongs to the technical field of power transmission and distribution engineering in electric power systems, and in particular relates to a comprehensive evaluation method for power grid safety based on a multi-level gray area correlation analysis method and game theory. Background technique [0002] In order to guide the safety evaluation work of the whole system, the State Grid Corporation of China promulgated the "Implementation Measures for the Safety Evaluation Work of Electric Power Production of the State Grid Corporation of China (Trial)" in September 2003, which stipulated the specific methods and methods for implementing the safety evaluation. Require. On the other hand, with the construction of the North China-Central China-East China UHV AC synchronous power grid with high security in China, the UHV synchronous power grid has expanded the scope and capacity of my country's receiving power grid, strengthened the ability to resi...

AI Technical Summary

Problems solved by technology

[0025] The technical problems existing in the existing power grid security evaluation methods mainly include that the evaluation index system is not complete, and most of them are single-layer indexes, and the single weight determination method makes the evaluation results relatively one-sided

And there is no technical solution based on the application of gray area correlation analysis method and game theory method to power grid security analysis in this field.

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