摘要
在故障元件已被有限广域集中式后备保护识别的基础上,提出一种基于方向权重的广域保护跳闸策略。根据网络拓扑及本区域内正序电流相量信息,构造基于方向权重的节点-支路关联矩阵,然后根据故障判别结果和断路器失灵判别结果构造元件-断路器关联度向量,并通过关联度向量识别并跳开关联断路器。仿真结果表明,所提方法简化了后备保护的配合关系,且能够在最小范围内切除故障,对信息同步没有严格要求,在断路器信息部分缺失时也有很好的适用性及可靠性。
With the prerequisite that the faulty element has been identified by the limited wide-area centralized backup protection,a tripping strategy based on directional weight is proposed for the wide-area backup protection. A node-branch correlation matrix is formed based on the directional weight according to the network topology and the positive-sequence current phasor information within the area. A componentbreaker relevance vector is constructed according to the results of fault identification and circuit breaker failure detection,based on which,the relevant circuit breaker is recognized and tripped. The simulative results demonstrate that,the proposed method simplifies the cooperation relationship of backup protection;the fault is cut off with the minimum blackout zone;the requirement for information synchronization is not strict;and it has better reliability and applicability even when partial circuit breaker information is lost.
出处
《电力自动化设备》
EI
CSCD
北大核心
2015年第10期107-114,共8页
Electric Power Automation Equipment
基金
中央高校基本科研业务费专项资金资助项目(2014-ZZD02)
国家重点基础研究发展计划(973计划)项目(2012-CB215200)
国家自然科学基金资助项目(51277193
509070-21)
教育部留学回国人员科研启动基金资助项目(教外司留[2011]1139号)
河北自然科学基金资助项目(E2012502034)
中国电机工程学会电力青年科技创新项目(电机学[2012]46号)
北京市科技新星支持计划(Z141101001814012)
霍英东教育基金资助项目(141057)~~
关键词
继电保护
广域保护
跳闸策略
断路器
方向权重
元件-断路器关联度向量
relay protection
wide-area protection
tripping strategy
electric circuit breakers
directional weight
component-breaker relevance vector
