摘要
从变电站二次系统实际运行过程中可能导致器件失效的温度、湿度和机械等原因入手,对继电器、光耦、光纤和CPU芯片等关键元器件进行了失效模式、潜在失效机理分析,建立了各种元器件的失效物理模型及失效率模型,进而对变电站二次系统进行可靠性评估,结果表明所提出的方法可有效评估变电站二次系统可靠性,能够为变电站二次设备的检修工作提供参考依据。
This paper starts from the reasons of device temperature,humidity and machine which may lead to the failure of device during the actual operation process of substation secondary system,the failure modes and potential failure mechanism of key components such as relay,opt coupler,fiber and CPU chip are analyzed,and the failure physics model and the failure rate model of those components are established to evaluate the reliability of the secondary system of substation.The simulation results show that the proposed method can effectively evaluate the reliability of the secondary system of substation,which can provide reference for the maintenance work of the secondary equipment of substation.
出处
《河北电力技术》
2016年第6期19-22,共4页
Hebei Electric Power
关键词
二次系统
失效物理
变电站
蒙特卡罗方法
secondary system
physics of failure
substation
monte-carlo method
