| 引用本文: | 郭艺,吕飞鹏,王刚.基于直觉梯形模糊数的数字保护可靠性分析[J].电力系统保护与控制,2014,42(12):65-70.[点击复制] |
| GUO Yi,Lü Fei-peng,WANG Gang.Reliability analysis of digital relay based on intuitionistic trapezoidal fuzzy numbers[J].Power System Protection and Control,2014,42(12):65-70[点击复制] |
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| 摘要: |
| 智能变电站继电保护系统在架构和原理上都发生了巨大改变，如何客观正确地分析其可靠性尤为重要。对保护信息分类处理，采用最小路集算法进行合理的拓扑分析，然后运用直觉梯形模糊数对系统具有模糊不确定性的设备元件故障率进行分析计算，得出模糊可靠性指标，并通过编程的方式运用直觉梯形模糊数的信息不完全确定决策方法对最小路集线路进行可靠性分析，找出系统的薄弱环节。事实证明，该方法是一种具有实际意义的继电保护系统可靠性评估方法。 |
| 关键词: 数字保护 最小路集 直觉梯形模糊数 可靠性 |
| DOI：10.7667/j.issn.1674-3415.2014.12.011 |
| 投稿时间：2013-09-05修订日期：2013-12-03 |
| 基金项目: |
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| Reliability analysis of digital relay based on intuitionistic trapezoidal fuzzy numbers |
| GUO Yi,Lü Fei-peng,WANG Gang |
| (School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, China) |
| Abstract: |
| The structure and theory of relay protection system in smart substation have changed greatly. How to analyze the reliability of relay systems objectively and properly is an important problem. The information can be divided into three parts and the topology is analyzed rationally by minimal path sets algorithm, then the theory of intuitionistic trapezoidal fuzzy numbers is used to analyze and calculate the fuzzy and uncertain failure probabilities of devices. With the reliability indexes of relay protection system and the software of model, every minimal path can be analyzed by the decision-making method based on intuitionistic trapezoidal fuzzy numbers and the weakness of relay system is identified. This method proposed is proved correct and practical by the sample model. |
| Key words: digital protection minimal path sets algorithm intuitionistic trapezoidal fuzzy numbers reliability |
