电力系统保护与控制Issue(24)：72-78,7.
基于三参数Weibull分布的继电保护装置老化失效率估算
Research on aging failure rate estimation of protective relay based on three-parameter Weibull distribution
摘要
Abstract
Weibull distribution is widely used in component failure distribution fitting. Compared with two-parameter Weibull distribution, three-parameter Weibull distribution does better in the situation that aging characteristics does not exist in protective relays at initial operation. This paper analyzes the failure characteristics of protective relay, and proposes a new fitting method for aging failure data of protective relay based on the least square method. Combined with some real grid data, the failure rate function is calculated. The calculation results shows that, compared with two-parameter, three-parameter Weibull distribution is more in line with the aging failure characteristics of protective relay.关键词
继电保护装置/可靠性/时变失效率/三参数Weibull分布/最小二乘法Key words
protective relay/reliability/time-varying failure rate/three-parameter Weibull distribution/least square method分类
信息技术与安全科学引用本文复制引用
薛安成,罗麟,景琦,王俊豪,宋璇坤,刘颖,李军,黄少锋,毕天姝..基于三参数Weibull分布的继电保护装置老化失效率估算[J].电力系统保护与控制,2014,(24):72-78,7.基金项目
国家重点基础研究发展计划资助项目(863项目)(2012AA050208)；国家自然科学基金资助项目(51222703)；中央高校基本科研业务费专项资金资助(12MS30)This work is supported by National High-tech R&D Program of China (863 Program)(No.2012AA050208), National Natural Science Foundation of China (No.51222703), and Fundemental Research Funds for the Central Universities (No.12MS30) （863项目）
