摘要
光伏电源通过配电网并网发电,并网后的配电网会发生结构变化,造成电网中的潮流分布和短路电流发生改变,进而影响线路中继电保护设备的正常运行。本文研究了光伏电源接入后对线路中继电保护所产生的影响,通过仿真分析配电网中光伏电源不同容量和短路故障不同位置对电网短路电流所产生的影响,并进一步研究其对三段式电流保护的影响。
The photovoltaic power is usually generated by the distribution network, and the distribution network after the grid will change, which causes the power flow distribution and the short circuit current to change, and then affects the normal operation of the relay protection equipment in the line. The influence of photovoltaic power supply on the relay protection in the circuit is studied. The influence of the different capacity of the power supply and the different position of the short circuit fault on the short circuit current of the power grid is obtained by simulation, and the effect on the three stage current protection is further studied.
作者
张姣
杨帅
Zhang Jiao;Yang Shuai(Foshan Power Supply Bureau,Guangdong Power Grid Company,Foshan,Guangdong 528000)
出处
《电气技术》
2019年第2期85-88,共4页
Electrical Engineering
关键词
光伏电源
继电保护
配电网
短路电流
photovoltaic power supply
relay protection
distribution network
short circuit current
