智能变电站继电保护系统可靠性分析

王同文; 谢民; 孙月琴; 沈鹏

引用本文:	王同文,谢民,孙月琴,等.智能变电站继电保护系统可靠性分析[J].电力系统保护与控制,2015,43(6):58-66.
	WANG Tongwen,XIE Min,SUN Yueqin,et al.Analysis of reliability for relay protection systems in smart substation[J].Power System Protection and Control,2015,43(6):58-66

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智能变电站继电保护系统可靠性分析
王同文¹, 谢民¹, 孙月琴¹, 沈鹏²
1.安徽电力调度控制中心，安徽合肥 230022;2.华南理工大学电力学院，广东广州 510640

摘要:

基于通用设计建立220 kV智能变电站继电保护系统不同采样跳闸方式的典型结构，运用可靠性框图法构建智能变电站继电保护系统完备的可靠性评估模型并进行定量分析。采用概率灵敏度和元件灵敏度分别评估“直采直跳”模式下继电保护系统的元件灵敏度和重要度。前者给出了继电保护系统的薄弱环节，为优化系统设计提供参考；后者揭示了系统元件的重要度，指导系统运维。研究结果对智能变电站继电保护系统的设计、运维和发展具有借鉴意义。

关键词: 智能变电站继电保护可靠性框图灵敏度可靠性

DOI：10.7667/j.issn.1674-3415.2015.06.010

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Analysis of reliability for relay protection systems in smart substation

WANG Tongwen¹, XIE Min¹, SUN Yueqin¹, SHEN Peng²

1.Anhui Electric Power Dispatch & Control Center, Hefei 230022, China;2.School of Electric Power, South China University of Technology, Guangzhou 510640, China

Abstract:

The typical structures of relay protection systems in smart substation for different sampling and tripping mode based on universal design are built. Both the complete reliability evaluation models and reliability analysis for relay protection system are also finished based on reliability block diagram. Probability sensitivity and component sensitivity are used to provide the element sensitivity and importance under the direct-sampling-direct-tripping mode protection system. The former is applied to find the weak link in order to improve the system design level, and the latter is used to search for the importance of each device to guide the operation & maintenance of the protection system. Research results can be used for the planning, operation & maintenance, and development for relay protection system in smart substation.

Key words: smart substation relay protection reliability block diagram sensitivity reliability

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