基于失效建模和概率统计的高压断路器寿命评估探讨

HV circuit breaker lifetime assessment based on the failure model and probability statistics

讨论了断路器寿命评估中寿命和失效的含义;明确了断路器失效判断的依据;建立了断路器失效的故障树模型和部件失效的Weibull模型;介绍了优化极大似然法确定模型参数的计算方法。

The meaning of lifetime and failure of circuit breakers are determined. The circuit breaker failure criterion is discussed. A circuit breaker failure decomposition fault tree model and component failure Weibull model are presented. An optimized maximum likelihood method is introduced to estimate the model parameters.