| 引用本文: | 张智锐,肖繁,焦邵麟,等.不同过程层网络结构的保护系统可靠性分析[J].电力系统保护与控制,2013,41(18):142-148.[点击复制] |
| ZHANG Zhi-rui,XIAO Fan,JIAO Shao-lin,et al.Reliability evaluation of protective relay system based on process layer network[J].Power System Protection and Control,2013,41(18):142-148[点击复制] |
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| 摘要: |
| 数字化变电站过程层存在多种形式的网络结构，研究不同网络结构下继电保护系统的可靠性对过程层网络结构的选择和工程应用具有重要意义。根据数字化变电站继电保护系统的构成特点，提出了一种保护系统可靠性分析方法。该方法将保护系统划分为采样子系统和跳闸子系统，分别建立其故障树模型。综合考虑设备故障和修复过程，利用故障树和蒙特卡罗(Monte Carlo)仿真相结合的求解方法计算保护系统可靠性。最后应用所提出的分析方法，对不同网络结构下保护系统的可靠性进行了评估，通过对元件概率重要度分析，给出了影响保护系统可靠性的主要元件。 |
| 关键词: 数字化变电站 过程层网络 继电保护系统 可靠性模型 可靠性算法 |
| DOI：10.7667/j.issn.1674-3415.2013.18.024 |
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| 基金项目:国家自然科学基金资助项目（51177058，50837002） |
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| Reliability evaluation of protective relay system based on process layer network |
| ZHANG Zhi-rui1,XIAO Fan2,JIAO Shao-lin1,DONG Wen-xiu2,WANG Feng1,ZHANG Zhe2,YIN Xiang-gen2 |
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| Abstract: |
| There are many forms of network structures in the process of digital substation layer. It is significant to research the process layer’s reliability under different network structures of relay protection system for the network structure selection of process layer and engineering application. Based on the digitized substation relay protection system structure characteristic, this paper puts forward a reliability analysis method for protection system. The protection system is divided into sampling subsystem and trip subsystem and their fault tree models are established respectively. The method comprehensively considers the equipment failure and repair process and makes use of the fault tree and Monte Carlo simulation to solve the reliability protection of system. Finally, the proposed method is used to evaluate the reliability of the protection system with different network structures. The main elements affecting the reliability of protection system are given by the analysis of the component probability importance. |
| Key words: digital substation process layer network protective relay system reliability model reliability algorithm |
