提高REB103母差保护安全运行的几点改进措施  

Improvement of REB103 bus differential relay security application

作　　者：余志慧[1] 赵晓明[2] 吴俊[2] 

机构地区：[1]浙江大学,浙江杭州310027 [2]浙江省电力试验研究院,浙江杭州310014

出　　处：《继电器》2007年第7期80-82,共3页Relay

摘　　要：介绍了多起REB103中阻抗母差保护不正常运行实例,大多是在作者进行母差保护定期校验和带负荷试验中发现的。文中深入分析了REB103母差保护的动作原理,详细阐述了保护在区内、区外故障的动作行为,着重指出了REB103母差保护由于备用间隔辅助电流互感器被短接造成保护可能的潜在拒动、误动原因,并模拟母线区内、区外故障,通过试验验证理论分析的正确性。文中同时还从设计制造、安装调试、运行维护以及保护整定等各个方面提出了提高REB103母线保护安全可靠运行的解决方案和反事故措施。Several abnormal operation instances of REB 103 bus differential relay are introduced. Most of these abnormal operation instances are detected in periodically inspection and commissioning of REB 103 on energized bus. The paper illuminates the action of REB 103 bus differential relay during normal conditions, external faults with fully saturated line TA ,internal bus faults and so on .The paper emphasizes the action of REB 103 bus differential relay during the auxiliary TA short circuit. The reasons are analyzed based on its working principles and are simulated in field-tests. The resolved methods about installation and commissioning, routine testing, maintenance and setting-calculation are presented to improve the stabilization and sensitivity of REB 103 bus differential relay.

关 键 词：REB103母差保护 辅助电流互感器 CT断线 运行维护 

分 类 号：TM771[电气工程—电力系统及自动化]