35 kV变电站复压过流保护的应用  

Application of Compound Voltage Overcurrent Protection in 35kV Substation

作　　者：郭经州 GUO Jingzhou(Yong’an Coal Industry Co., Ltd., Datian 366102, China)

机构地区：[1]永安煤业有限责任公司,福建大田366102

出　　处：《煤矿机电》2020年第6期110-111,共2页Colliery Mechanical & Electrical Technology

摘　　要：广平矿区35 kV变电站供电系统存在非故障时保护误动作跳闸,供电系统稳定性不高的问题,经研究论证,投入复压过流保护技术,避免了一些因启动电流瞬间升高但电压变化不大时保护的误动作,从而提高矿区供电系统的稳定性。The power supply system of 35kV substation in Guangping Mining Area has the problems of non-fault protection misoperation trip and low stability of power supply system.Through research and demonstration,the application of compound voltage overcurrent protection technology can avoid some misoperation of protection due to instantaneous rise of starting current with small voltage change,so as to improve the stability of power supply system in mining area.

关 键 词：负序电压 低电压 过流保护 

分 类 号：TD611[矿业工程—矿山机电]