【摘要】 剩余电流动作断路器直接影响低压配电系统的安全性和可靠性。为了研究剩余电流动作断路器的可靠性，使用基于退化量分布的建模方法对其性能退化过程进行研究，并预测出其使用寿命。首先，对剩余电流动作断路器的失效机理进行分析，然后设计实施剩余电流动作断路器的加速退化试验，建立了退化量服从正态分布的可靠度分析模型，采用最小二乘法对模型中的参数进行估计，从而对剩余电流动作断路器的可靠性进行评估并绘制可靠度曲线。更多还原

【Abstract】 Residual current operated circuit breaker directly affects the safety and reliability of low-voltage distribution system. In order to study the reliability of residual current operated circuit breaker,the performance degradation process is studied by using the modeling method based on degradation distribution,and its service life is predicted. Firstly,the failure mechanism of residual current operated circuit breaker is analyzed,and then the accelerated degradation test of residual current operated circuit breaker is designed and implemented. The reliability analysis model that the degradation quantity obeys the normal distribution is established,and the parameters in the model are estimated by the least square method,so as to evaluate the reliability of residual current operated circuit breaker and draw the reliability curve.更多还原