白河变500kVⅠ母BP-2B母差保护缺陷分析  

Analysis on a Technical Fault of BP-2B Bus Bar Differential Protection in 500 kV Baihe Substation

作　　者：朱雪凌[1] 曹永欣[1,2] 张妍[1,3] 梁国迪 

机构地区：[1]华北水利水电大学,河南郑州450045 [2]国网河南省电力公司检修公司,河南郑州450007 [3]国网河南省电力公司洛阳供电公司,河南洛阳471000

出　　处：《华北水利水电大学学报（自然科学版）》2015年第6期89-92,共4页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

摘　　要：微机继电保护装置在变电站复杂的电磁干扰环境下,内部的电子元器件将受到干扰使其不能正常运行,甚至影响到保护的正确动作,对电网的安全稳定运行构成威胁.结合白河变500 k VⅠ母BP-2B母差保护定期检查工作中发现的缺陷,采用对称分量法对采样结果进行分析,确认故障原因是无法采集到零序电流,对可能的故障点进行排查,最终定位故障插件并提出了诊断方法和预防措施.The microcomputer relay protection usually runs under a complex condition with electromagnetic interference（ EMI）. The electronic elements in it will be so disturbed that they may not function correctly,which can become a threat to the safe and stable running of the grid system. This paper focuses on a fault of BP-2B bus bar differential protection in 500 k V Baihe substation,the symmetric component method is used to analyze sampling results,the results show that the failure is because the zero sequence current is unable to be collected. Furthermore,possible points of failure are investigated on by one,and finally the fault widget is located and some diagnostic methods and preventive measures are proposed.

关 键 词：BP-2B母差保护 零序电流 故障分析 

分 类 号：TM773[电气工程—电力系统及自动化]