Comprehensive State Evaluation Method of Circuit Breaker Health State Based on Variable Weight

doi:10.3969/j.issn.1008-0198.2022.03.004

Abstract

Abstract: High voltage circuit breaker is the key equipment of substation. It is of great significance to evaluate the operation state of circuit breaker comprehensively and accurately to ensure the reliable operation of power grid. Based on the idea of variable weight, a fuzzy comprehensive evaluation method for circuit breaker state evaluation is presented in this paper. In this paper, the comprehensive state evaluation indexes are given, each index quantity is normalized, the variable weight coefficient of each state quantity is calculated,furthermore the fuzzy correlation between the indexes is given. The balance of multiple factors is considered, and an accurate comprehensive evaluation system of circuit breaker reflecting the actual operation demand is established. Based on expert experience and condition evaluation guidelines, the status of circuit breaker is divided, and finally the comprehensive condition evaluation results of circuit breaker are given. Finally, the practical analysis of a circuit breaker in a substation in Jiangsu Province show that the comprehensive evaluation method proposed in this paper has high accuracy and adaptability.

Key words: circuit breaker, state evaluation, test, variable weight, comprehensive evaluation

CLC Number:

TM561

CHEN Hao, MA Zhaoxing, WU Siying, XU Peng, ZHANG Ming. Comprehensive State Evaluation Method of Circuit Breaker Health State Based on Variable Weight[J]. Hunan Electric Power, 2022, 42(3): 20-24.

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