交流单相故障引起直流输电换相失败的仿真研究及其预防措施Simulation Analysis and Preventive Measure of HVDC Commutation Failure because of AC Single Phase Faults
任永生,王晓丽,艾飞
REN Yong-sheng1,WANG Xiao-li2,AI Fei3(1.Xiaoshan Electric Power Supply Bureau
摘要(Abstract)：
换相失败是高压直流输电系统最常见的故障之一。通过分析换流器换相失败的机理,归纳了HVDC换相失败的各种影响因素。以2008年南方电网数据为基础,基于PSCAD/EMTDC软件建立了贵广二回直流输电系统的模型,分析了一次系统和控制系统的具体结构。对直流输电系统逆变侧换流母线发生单相接地短路故障的情况进行了仿真实验,研究了故障对系统的影响,提出了预防换相失败的措施。
Commutation failure is one of the most common faults in HVDC transmission systems. The influencing factors of HVDC commutation failure are concluded based on analysis of the mechanism of commutation failure. According to the data of Southern China Power Grid in the year of 2008,a detailed Guizhou-Guangdong Ⅱ HVDC transmission system is established using PSCAD/EMTDC,the structures of primary system and control system are analyzed. The single-phase grouding fault of inverter commutation bus is simulated,the effect to the system for commutation failure caused by a single-phase grouding fault of inverter commutation bus is reseached,and a preventive measure for commutation failure under this kind of fault is proposed.
关键词(KeyWords)：
高压直流;换相;失败;预防;措施;仿真
HVDC;commutation;failure;preventive;measure;simulation
基金项目(Foundation):
作者(Author):
任永生,王晓丽,艾飞
REN Yong-sheng1,WANG Xiao-li2,AI Fei3(1.Xiaoshan Electric Power Supply Bureau
DOI: 10.19585/j.zjdl.2009.05.005
参考文献(References)：
- [1]吴冲,李兴源,黄宗君.高压直流输电系统换相失败及其相关问题研究[J].现代电力,2007,24(3):1-5.
- [2]郝跃东,倪汝冰.HVDC换相失败影响因素分析[J].高电压技术,2006,32(9):38-41.
- [3]陈树勇,李新年,余军,等.基于正余弦分量检测的高压直流换相失败预防方法[J].中国电机工程学报,2005,25(14):1-6.
- [4]孙志媛,梁小冰,孙艳.基于EMTDC的多馈入直流输电系统仿真研究[J].电网技术,2006,30(增刊):295-298.
- [5]浙江大学直流输电科研组.直流输电[M].北京:电力工业出版社,1982.
- [6]戴熙杰.直流输电基础[M].北京:电力工业出版社,1982.
- [7]李兴源.高压直流输电系统的运行和控制[M].北京:科学出版社,1998.
- [8]荆勇,欧开健,任震.交流单相故障对高压直流输电换相失败的影响[J].高电压技术,2004,30(3):60-62.
- [9]Thio C V,Davies J B,Kent Kl.Commutationfailures in HVDCtransmissionsystems[J].IEEE Trans on Power Deliv-ery,1996,11(2):946-957.
- [10]Kristmundsson G M,Carroll D P.The effect of systemfre-quency spectrumon commutation failure in HVDCinverter[J].IEEE Trans on Power Delivery,1990,5(2):1121-1128.
- [11]杜忠明.贵广第二回直流输电工程换流站无功补偿的研究[J].电网技术,2006,30(10):69-74.
- [12]王路,李兴源,颜泉,等.复杂交直流系统的双时标混合协调仿真[J].电力系统自动化,2005,29(22):28-32.
- [13]Arne Hansen and Henrik Havemann.Decreasingthe commu-tation failure frequencyin HVDCtransmission systems[J].IEEETrans on Power Delivery,2000,15(3):1022-1026.