摘要
结合电力系统里一例故障案例,分析了弱馈线路的电源侧背后发生金属性接地故障时,按超范围整定的快速距离I段或纵联距离保护,在系统运行方式具备一定条件的情况下,非故障相的接地距离继电器误动的可能性和误动条件,并提出了可靠的解决方案。
In the case study of a failure in power system, the metal grounding fault occuired at the rear of the power supply of weak feedback line with the fast distance protection segment I and the pilot distance protection tuned overrange. This paper analyzes the malfunction possibility and conditions of non-fault-phase grounding distance relay in some modes of system operation, and proposes the reliable solutions.
出处
《华东电力》
北大核心
2012年第11期1988-1991,共4页
East China Electric Power
关键词
弱馈线路
空载
阻抗
距离保护
weak feedback line
no-load line
impedance
distance protection
