变电站二次电压回路运行注意事项  

Precautions on the Operation of the Secondary Voltage Circuit in a Substation

作　　者：王洪俭 WANG Hongjian(Jiaxing Power Supply Company,Jiaxing 314033)

机构地区：[1]国网浙江省电力有限公司嘉兴供电公司,浙江嘉兴314033

出　　处：《电力安全技术》2021年第9期21-23,共3页Electric Safety Technology

摘　　要：介绍了电压并列、切换回路的工作原理及事故原因,分析了三起在二次电压回路误并列情况下,发生母线PT二次侧向一次侧反送电,造成二次电压全失、二次设备损坏的事故案例,并在此基础上提出了一些二次电压回路运行注意事项,以指导生产现场正确应用。The operation principles and fault causes of voltage parallel and voltage switching circuits are introduced,and three accident cases concerning total secondary voltage loss and secondary equipment damages due to secondary to primary sides reverse power supply of bus PT in case of false paralleling of secondary voltage circuit,based on which some operation precautions of secondary voltage circuit are put forward so as to direct the correct onsite applications.

关 键 词：变电站 重动继电器 电压并列 电压切换 

分 类 号：TM63[电气工程—电力系统及自动化]