| 继电保护装置可靠性及其最佳检修周期的研究 |
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| 引用本文： | 李永丽,李致中,杨维.继电保护装置可靠性及其最佳检修周期的研究[J].中国电机工程学报,2001,21(6):63-65,71. |
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| 作者姓名： | 李永丽 李致中 杨维 |
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| 作者单位： | 天津大学电力系,天津 300072 |
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| 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。
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| 关 键 词： | 继电保护装置 可靠性 最佳检修周期 电力系统 |
| 文章编号： | 0258-8013(2001)06-0063-03 |
STUDY OF RELIABILITY AND OPTIMAL ROUTINE TEST INTERVAL OF PROTECTIVE RELAYS |
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| LI Yong li,LI Zhi zhong,YANG Wei.STUDY OF RELIABILITY AND OPTIMAL ROUTINE TEST INTERVAL OF PROTECTIVE RELAYS[J].Proceedings of the CSEE,2001,21(6):63-65,71. |
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| Authors: | LI Yong li LI Zhi zhong YANG Wei |
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| Abstract: | 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. |
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| Keywords: | reliability markov model the optimal routine test interval probability |
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