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中文摘要：
高可靠性微机继电保护装置的人为失效、软件失效以及不同检修模式等因素造成的失效不可忽略。同时,其失效率在全寿命周期内并非恒定。针对上述问题,分别建立了考虑多重因素的单个保护装置5状态Markov模型和双重化保护的14状态Markov模型。考虑时变失效因素与检修因素,并对部分检修与全部检修进行区分,比较相应的时变不可用率变化,并给出最优检修策略。
英文摘要：
For the highly reliable protective relay,the software failures,human errors and other failure factors cannot be ignored.Meanwhile,these failure rates are j ust time-varying in the whole lifecycle.To solve these problems,a 5-state Markov model for single protective relay considering multi-factors and a 14-state Markov model for dual protective relays are developed, respectively.Based on the time-varying failure rate and maintenance factors and by referring to the current maintenance strategies of the State Grid,the time-varying unavailability of partial maintenance is distinguished from that of complete maintenance under different maintenance strategies,with the optimal maintenance strategy given.
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