摘要
配电网串联补偿装置可以实时自适应补偿线路无功,有效改善线路沿线电压质量,提升线路末端低电压,非常适合国内配电网的需要。但是目前国内配电网串联补偿装置过电压保护方式不统一,且缺乏对短路时串联补偿装置暂态特性的研究。应用EMTP电磁暂态分析工具,建立了典型配电网串联补偿仿真模型,研究了短路故障时串联补偿装置内部的电磁暂态过程,为配电网串联补偿装置的过电压保护设计提供参考。
The series compensation device in distribution network(DFSC)can compensate the line reactive power adaptively with no time lag,improve the voltage quality along the line effectively,and increase the low voltage at the end of the line,which is very suitable for the domestic distribution network.However,at present,the overvoltage protection mode of the DFSC is not uniform,and there is a lack of research on the transient characteristics of the series compensation device during the short circuit fault.A typical distribution network series compensation simulation model of the device using EMTP electromagnetic transient analysis tool is established,and the electromagnetic transient process inside the series compensation device during shortcircuit fault is studied,which provides a reference for the design of the overvoltage protection of the distribution network series compensation device.
作者
袁江伟
王德昌
周启文
YUAN Jiangwei;WANG Dechang;ZHOU Qiwen(NR Electric Co.,Ltd.,Nanjing 211102,China)
出处
《供用电》
2020年第8期47-53,共7页
Distribution & Utilization
基金
国家重点研发计划“交直流混合系统的集成、试验与示范应用”(2017YFB0903305)。
关键词
配电网
串联补偿装置
电磁暂态
过电压保护
阻尼单元
线路保护
distribution network
series compensation device
electromagnetic transient
overvoltage protection
damping unit
line protection
