确保35kV母线安全可靠运行的重要举措  

Important measures for the steady operation of 35kV bus

作　　者：杨萍[1] 

机构地区：[1]石嘴山供电局,宁夏石嘴山753000

出　　处：《电气传动自动化》2009年第5期53-54,共2页Electric Drive Automation

摘　　要：针对35kV母线短路电流过大,影响母线安全运行的情况,在一次设备上采取加装限流电抗器的办法来限制母线短路电流,在二次保护上加装微机母差保护或在上级变压器35kV侧新增一段限时速断保护以较短时间切除母线故障。通过在一次设备和二次保护上同时采取措施,有效地保证35kV母线安全可靠运行。并对所有变电站按上述措施加以实践,运行效果良好。Aimed at the short circuit current of 35kV bus is too large, it impacts the steady operation, some measurements are taken to restrict short circuit current, such as installing current-limit reactor on the preliminary equipment, mirocomputer differential bus protection on the secondary protection or adding a time-delay quick-break protection on the side of upper transformer. Through thease methods, the steady operation is guaranteed effectively.

关 键 词：母线故障 微机母差保护 运行 

分 类 号：TM773[电气工程—电力系统及自动化]