摘要
在继电保护电压回路中需注意几个问题,结合现场实际,详细分析了在电压回路中涉及到的电压互感器(PT)二次回路短路、反送电、N600两点接地造成保护不正确动作、电压的检验方法、核相等问题,通过深入细致的分析,有利于继电保护人员及时发现在工作中未曾意识到的问题,从而避免继电保护三误的发生,提高继电保护的正确动作性,保证电力系统的安全稳定运行。
Some issues involved in voltage circuit are analysed in detail, including short-circuit of secondary circuit, reversed feeding, protection misoperation caused by N600 two-point grounding, voltage test method and phase-checking etc.. These in-depth analysis are conducive to the personnel engaged in relay protection to be aware of the problems that have not been noted so as to avoid errors in relay protection to improve the correct action of relay protection, and ensure the safe and stable operation of power system.
出处
《山西电力》
2015年第2期40-43,共4页
Shanxi Electric Power
关键词
电压回路
继电保护
电压互感器
voltage circuit
relay protection
potential transformer
