一起因低压保护定值不合理导致越级跳闸故障的分析  

Analysis of A Fault of Overstep Tripping Caused by Irrational Low-Voltage Protection Value

作　　者：刘积慧 田尚财 刘东芸 LIU Jihui;TIAN Shangcai;LIU Dongyun(Power Plant of Hongxing Co.,Ltd.,Jiuquan Iron and Steel Group;Gansu Iron and Steel Vocational Technical College,Jiayuguan,Gansu 735100,China)

机构地区：[1]酒钢宏兴股份公司动力厂 [2]甘肃钢铁职业技术学院,甘肃嘉峪关735100

出　　处：《冶金动力》2024年第1期5-8,共4页Metallurgical Power

摘　　要：在配电系统中,保护装置的作用是为了当保护区域内设备发生故障时,能按照保护设定值快速、可靠切除故障,缩小停电区域,减少损失。如保护装置日常管理不到位或保护定值的计算及设置不合理等都将会导致开关误动、拒动或越级跳闸,因此电气管理人员应高度重视各级保护装置及定值的日常管理。In the power distribution system,the role of the protective device is to be able to quickly and reliably remove the fault in accordance with the protection setting value when a fault occurs in the equipment within the protection area,so as to narrow the blackout area and reduce losses.If the daily management of the protection device is poor or the calculation and setting of the protection value is not reasonable,it will lead to the switch misoperation,refusal operation or overstep tripping.Therefore,the electrical management personnel should attach great importance to the daily management of all levels of protection devices.

关 键 词：低压系统 保护配置 越级跳闸 

分 类 号：TM774[电气工程—电力系统及自动化]