引用本文: | 蒋红亮,吕飞鹏.基于改进证据理论融合的站域后备保护算法[J].电力系统保护与控制,2018,46(12):57-63.[点击复制] |
JIANG Hongliang,LÜ Feipeng.An algorithm of substation-area backup protection based on improved evidence theory fusion[J].Power System Protection and Control,2018,46(12):57-63[点击复制] |
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摘要: |
针对站域后备保护(SABP)信息同步性要求高和容错性低等问题,提出了一种基于改进证据理论融合的SABP算法。首先,SABP装置根据全站各线路两端传统主/后备保护和方向元件动作情况识别疑似故障线路,并由各疑似故障线路两端保护信息构成证据融合信息域。然后,搜集证据融合信息域内的主/后备保护和方向元件动作信息,经预处理后形成证据组并计算各证据的基本概率赋值,利用改进证据理论对证据信息进行融合判断来实现故障线路的识别。算例仿真表明,该SABP算法具有无需信息同步、站域信息交互的通信量小和信息容错性高等特点,能有效改善SABP性能。 |
关键词: 站域后备保护 故障识别 信息融合 D-S证据理论 |
DOI:10.7667/PSPC170895 |
投稿时间:2017-06-14修订日期:2017-08-07 |
基金项目: |
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An algorithm of substation-area backup protection based on improved evidence theory fusion |
JIANG Hongliang,LÜ Feipeng |
(School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, China) |
Abstract: |
Aiming at the problems such as high synchronization requirementof information and low fault tolerance of Substation-Area Backup Protection (SABP), an algorithm of SABP based on improved evidence theory fusion is proposed. Firstly, the SABP deviceidentifies the suspected fault lines according to action information of the traditional main/backup protection and direction component at both ends of all substation lines, and forms the evidence fusion information domain using the protection information at both ends of the suspected fault lines. Then, the evidence group is formed by preprocessing the collected the action information of main/backup protection and direction component in the evidence fusion information domain, and the basic probability assignment of each evidence is calculated. The SABP deviceidentifies the fault line by improved evidence theory fusion with the evidence information. The simulation results show that the proposed SABP algorithm has the characteristics of no requirement of information synchronization, small substation-area interactive communication traffic and high information fault tolerance, and can effectively improve the performance of SABP. |
Key words: substation-area backup protection fault identification information fusion D-S evidence theory |