继电保护装置可靠性及其最佳检修周期的研究  

STUDY OF RELIABILITY AND OPTIMAL ROUTINE TEST INTERVAL OF PROTECTIVE RELAYS

作　　者：李永丽[1] 李致中[1] 杨维[1] 

机构地区：[1]天津大学电力系,天津300072

出　　处：《中国电机工程学报》2001年第6期63-65,71,共4页Proceedings of the CSEE

摘　　要：针对继电保护装置可靠性 (即其误动和拒动的概率 )的研究 ,建立了评价继电保护装置可靠性的马尔科夫模型 ;运用状态空间法计算了继电保护装置的状态概率和可靠性指标 ;分析了自检周期对保护装置故障率的影响。研究了保护装置最佳检修周期的确定和带自检的微机保护装置和不带自检的传统保护装置在最佳检修周期上的差异 ;为确定保护装置的最佳检修周期提供了理论依据。The study of reliability is to calculate the probabilities that the protective relays fail to operate or unwanted operate. A Markov Probability model has been established in this paper to evaluate the reliability of protective relays. Using the state space method, the state probabilities and reliability indices has been calculated and the optimum routine test interval of protective relays can be obtained. The difference in the optimum routine test intervals between traditional relays and Microprocessor based relays has also been discussed.The theoretical foundation has been established to decide the optimum routine test interval for digital relays.

关 键 词：继电保护装置 可靠性 最佳检修周期 电力系统 

分 类 号：TM774[电气工程—电力系统及自动化]