广域继电保护中一种故障判定算法  

A Fault Identification Algorithm for Wide-area Relaying Protection

作　　者：李运坤[1] 江登笠[1] 周文越[2] 

机构地区：[1]德阳电业局检修公司,四川德阳618000 [2]四川大学电气信息学院,四川成都610065

出　　处：《四川电力技术》2013年第3期37-41,90,共6页Sichuan Electric Power Technology

摘　　要：针对现有后备保护配合复杂容易误动的问题,基于广域测量信息,提出了一种新型故障判定算法。利用Petri网得到元件/IED关联矩阵,将方向元件动作信息作为故障判定的主判据,主保护以及距离I段保护的动作信息作为故障判定的辅助判据,将这两种判据与元件/IED关联矩阵通过矩阵运算结合在一起,最后得到故障位置信息。通过算例证明,该方法运算简单,容错性强,可实现快速故障判定。Aiming at decreasing the probability of misoperation, a new algorithm of fault identification based on wide -area measurement information is proposed. The incidence matrix of component/IED is obtained based on Petri net. The primary criterion of fault identification is the action information of directional element, and the assistant criteria are the action information of main protection and the zone 1 of protection relay. The information of the fault position can be obtained by combing with these two criteria and incidence matrix of component/lED through matrix computation. The example verifies that the proposed method has an easy computation and a good fault tolerance, which can identify the fault quickly.

关 键 词：后备保护 广域继电保护 分布式结构 PETRI网 关联矩阵 

分 类 号：TM77[电气工程—电力系统及自动化]