电力系统自动化2012，Vol.36Issue(5)：11-15,23,6.
继电保护装置时变失效率估算及其区域性差异分析
Time-varying Failure Rate Estimation of Relay Protection Devices and Their Regional Differences Analysis
摘要
Abstract
The time-varying failure rate（TFR） has advantages over the mean failure rate（MFR） in accuracy for reliability assessment.The estimation approach for the TFR of the relay protection device（RPD） with the field data is proposed.According to the feature of RPD failure,the data is first divided into random failure data and aging failure data.And then for the random failure data,the constant random failure rate（RFR） of RPD is drawn up with estimating exponential distribution function,for the aging failure data,aging failure rate（AFR） is estimated with the Weibull,normal,lognormal and Rayleigh distribution functions,and the best estimation is determined by the coefficient of determination.Simulation results show that the aging failure data of real power grid obeys the Weibull distribution law.Furthermore,the general TFR is,obtained with the addition of the RFR and AFR,estimated with the field data in a regional power grid.Finally,considering the geographical features of the power grid,environmental and regional factors,failure rate is calculated and the conclusion is drawn： MFR is basically consistent;AFR depends on climate.关键词
可靠性评估/继电保护装置/恒定失效率/时变失效率/概率分布函数/区域因素Key words
reliability evaluation/relay protection device/mean failure rate（MFR）/time-varying failure rate（TFR）/probability distribution function/regional factors分类
信息技术与安全科学引用本文复制引用
王睿琛,薛安成,毕天姝,黄少锋..继电保护装置时变失效率估算及其区域性差异分析[J].电力系统自动化,2012,36(5):11-15,23,6.基金项目
国家自然科学基金资助项目 （）
国家重点基础研究发展计划（“九七三”计划）资助项目 （）
高等学校学科创新引智计划（“111”计划）资助项目（B08013）~~ （）
