Abstract：The mixed supply lines with distributed generation have a great influence on the reclosing of distribution network. There is no line voltage extraction device in the 10kV feeder switch cabinet of the existing substation, and reclosing can not realize the function of no voltage detection or synchronous detection. Direct reclosing will cause great impact on the distributed generation units, and even expand the fault range. Taking the small hydropower station as an example, this paper studies a small line voltage transformer which can be installed in the switch cabinet to provide the voltage basis for reclosing and checking the line without voltage, so as to realize reliable and rapid power recovery and ensure the reliability of power supply.
徐兴发, 刘泽华. 一种适用于10kV开关柜的线路电压采集判断装置及方法[J]. 电气技术, 2020, 21(7): 97-102.
Xu Xingfa, Liu Zehua. Line voltage acquisition judgment device and method suitable for 10kV distribution network switch cabinet. Electrical Engineering, 2020, 21(7): 97-102.
2020, Vol. 21 
