摘要
110 kV变电站的下级配电房400 V用户的电气设备有瞬间失压现象。通过分析事件顺序记录(Sequence Of Euents,SOE)以及动作原因和系统原理图保护范围,得出110 kV变电站负序电压动作的原因来自供电公司的110 kV电源电网波动。
The electrical equipment of 400 V users in the subordinate distribution room of 110 kV substation has instantaneous voltage loss phenomenon.By analyzing the Sequence Of Euents(SOE),action reason and protection scope of system schematic diagram,it is concluded that the reason for the negative sequence voltage action of 110 kV substation comes from the fluctuation of 110 kV power grid of power supply company.
作者
李小力
LI Xiaoli(Eastern Airports Nanjing Lukou International Airport,Nanjing 210006,China)
出处
《通信电源技术》
2021年第10期173-176,共4页
Telecom Power Technology
关键词
负序电压
保护动作
欠压电网
negative sequence voltage
protection action
undervoltage power grid
