电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2013年
2期
79-83
,共5页
继电保护装置%平均无故障时间%失效率%寿命%Marquardt 法%Weibull 分布
繼電保護裝置%平均無故障時間%失效率%壽命%Marquardt 法%Weibull 分佈
계전보호장치%평균무고장시간%실효솔%수명%Marquardt 법%Weibull 분포
relay protection devices%mean time between failures%failure rate%life%Marquardt method%Weibull distribution
剖析了平均无故障时间、失效率与寿命的关系,分析了目前继电保护装置寿命研究中的不足因素.统计了某电网公司在运行继电保护装置失效率数据,结合继电保护装置可修复的特性,剔除了由于运行管理制度而提前退出运行等影响因素,利用 Marquardt 法对继电保护装置寿命的 Weibull 分布函数的参数进行估计,得出故障率分界点和故障率的分布曲线函数.分析了装置寿命的主要影响机理,提出了延长寿命的对策,为继电保护装置寿命要求的制定提供了理论依据.
剖析瞭平均無故障時間、失效率與壽命的關繫,分析瞭目前繼電保護裝置壽命研究中的不足因素.統計瞭某電網公司在運行繼電保護裝置失效率數據,結閤繼電保護裝置可脩複的特性,剔除瞭由于運行管理製度而提前退齣運行等影響因素,利用 Marquardt 法對繼電保護裝置壽命的 Weibull 分佈函數的參數進行估計,得齣故障率分界點和故障率的分佈麯線函數.分析瞭裝置壽命的主要影響機理,提齣瞭延長壽命的對策,為繼電保護裝置壽命要求的製定提供瞭理論依據.
부석료평균무고장시간、실효솔여수명적관계,분석료목전계전보호장치수명연구중적불족인소.통계료모전망공사재운행계전보호장치실효솔수거,결합계전보호장치가수복적특성,척제료유우운행관리제도이제전퇴출운행등영향인소,이용 Marquardt 법대계전보호장치수명적 Weibull 분포함수적삼수진행고계,득출고장솔분계점화고장솔적분포곡선함수.분석료장치수명적주요영향궤리,제출료연장수명적대책,위계전보호장치수명요구적제정제공료이론의거.
This paper analyzes the relationship among the concepts of mean time between failures, failure rate and life, discusses the limitations of life research about present relay protection devices, and collects the statistics of relay protection devices’ life and failure rate in different time from an electric grid corporation. According to the characteristics that relay protection devices are repairable, and by amending the data of relay protection devices which are untimely out of service due to the present management system, Marquardt method is utilized to estimate the parameter of two-parameter Weibull distribution function of relay protection devices’ life, thereby the cut-off of failure rate and the distribution curve function of failure rate are obtained. The paper analyzes the main influence mechanism and proposes the methods to extend the life, so as to provide the theoretical basis for relay protection devices’ life requirement.
