摘要
提出了一种基于方向比较原理的广域继电保护算法。根据发电厂或变电站的主接线形式和方向元件位置,分别形成厂站内一次设备和厂站出线对应的一次设备/方向元件关联矩阵。系统发生故障后,根据方向元件指示的故障方向信息和一次设备/方向元件关联矩阵形成一次设备/故障方向关联矩阵,并据此确定具体的故障元件。算例分析表明,该文提出的广域继电保护算法可以很好的判断线路、母线、变压器等一次设备发生的故障,判断结果准确,且对厂站的主接线形式有很好的适应性。
A wide area protection algorithm based on direction comparison is proposed. The Primary Devices/ Direction Element associated matrices for primary devices in substation and transmission lines connected different substations are created separately according to the bus configurations and direction elements positions in power plant or substations. When a fault occurs in power network, Primary Devices/Fault Direction associated matrices are formed based on the fault direction indicated by direction elements and Primary Devices/Direction Element associated matrices, and then the faulted primary device can be identified based on the above information. The results of cases study show that the proposed wide area protection algorithm can identify the faulted device effectively and correctly with good adaptability to bus configurations in power plant or substation.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第22期87-93,共7页
Proceedings of the CSEE
关键词
广域继电保护
方向比较
故障方向
关联矩阵
wide area protection
direction comparison
fault direction
associated matrices
