摘要
本文首先介绍了准东直流输电工程概况,基于短路电流超标机理分析,开展了该工程的潮流计算分析和短路电流分析等工作,并对投切滤波器进行了研究,在此基础上,对直流近区的交流N-1故障、N-2故障和减少配套电源机组后的故障情况分别进行了分析,并分别总结出了若干有意义的结论;最后,从准东直流输电工程的单极闭锁故障、双极闭锁故障和换相失败故障等方面,通过仿真验证了准东直流输电工程在不同故障情况下的稳定情况。本文的相关工作可为±1100kV直流输电工程的运行方式设定、系统稳定分析、故障分析等提供一定的理论借鉴。
First, the Zhundong HVDC transmission project is analyzed. The power flow and short circuit analysis for the project are presented based on short-circuit current exceeding standard mechanism. And the switching filter for the project is analyzed. The N-1 AC fault, N-2 fault and the faults reducing the power supply unit DC side are studied. Some meaningful conclusions are drawn. Finally, by the simulation of unipolar locking fault, bipolar block fault and commutation failure fault, the stability of Zhundong HVDC project in different fault conditions is verified. The related work can be provide theoretical reference of operation mode setting, system stability analysis and fault analysis for ±1100 kV HVDC system.
作者
赵明君
南东亮
郝红岩
张锋
李斌
Zhao Mingjun;Nan Dongliang;Hao Hongyan;Zhang Feng;Li Bin(Infornation and Communication Company of State Grid Xinjiang Electric Power Company,Urumqi 830011;State Grid Electric Power Research Institute of Xinjiang Electric Power Company,Urumqi 830011;Xinjiang Electric Power Dispatching and Communication Center,Urumqi 830011)
出处
《电气技术》
2018年第6期73-79,共7页
Electrical Engineering
