摘要
直流系统承担着为厂站控制装置、保护装置以及信号装置提供可靠电源的责任,可以保障电网的平稳安全运作。直流系统出现接地故障,将会导致保护装置误动作,诱发电力系统解列和设备停工等不良后果。因此,以几例直流系统接地故障为依据,阐述直流系统接地故障的典型表现,并进一步探析直流系统接地故障的查找方法及其应用优化。
DC system is responsible for providing reliable power supply for station control device,protection device and signal device,which can ensure the stable and safe operation of power grid.However,the occurrence of DC system grounding fault will lead to the misoperation of protection device,which will lead to the disconnection of power system,equipment shutdown and other adverse consequences.Therefore,based on several cases of DC system grounding fault,this paper expounds the typical performance of DC system grounding fault,and further analyzes the search method of DC system grounding fault and its application optimization.
作者
翟祥祥
ZHAI Xiangxiang(Suqian Branch of Jiangsu Water Source Co.,Ltd.,East Route of South to North Water Diversion Projec,Suqian 223800,China)
出处
《通信电源技术》
2020年第21期208-210,共3页
Telecom Power Technology
关键词
直流系统
接地故障
变电站
浮充电
万用表
电压测量法
DC system
grounding fault
substation
floating charge
multimeter
voltage measurement method
