Condition Evaluation Of High Voltage Circuit Breakers Based On Extenics

Reliability appears more important with power grid enlarged, and the reliability of circuit breakers is more important, which take on control and protect in power system. Based on analyzing present status of condition maintenance for the High Voltage Circuit Breakers (HVCB).A new method for evaluating the HVCB status, used extenics comprehensive evaluation is introduced in this paper.At first all kind of parameters indicating the circuit breaker status, and the degree of the parameters influencing the circuit breaker are analyzed. Based on different influenced degree, analytic hierarchy process (AHP) issued to determine the factor index's weight in the model. From the evaluating need of circuit breaker status, evaluate the circuit breaker status, furthermore, performance evaluation for the Condition Based Maintenance (CBM) of the HVCB is established, which is to improving the production management and making the CBM perfect. Through the examination of actual circuit breaker, all kind of parameter which indicate effectually the circuit breaker status are related by the model of condition assessment with extenics comprehensive evaluation for the high voltage circuit breakers. The assessment way can approximately evaluate the circuit breaker status. It provides a new way to know the circuit breaker status in time.