交直流混合配电网继电保护研究综述
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摘要
直流配电网能友好兼容各类分布式电源和直流负载,与现有的交流配电网构成交直流混合配电网是应对能源危机、环境污染的有效手段,但缺少可靠、稳定的继电保护技术是制约交直流混合配电网发展的重要因素。概述了国内外交直流混合配电网继电保护的研究现状。总结了直流配电网的结构、故障特性、保护原理等方面的研究,进而对交直流混合配电网的故障特性以及交直流相互作用对保护配置的影响进行分析。同时总结国内外对交直流换流器继电保护的研究。最后对交直流混合配电网继电保护技术的研究方向进行展望。
The DC distribution grid can access friendly various types of distributed power supplies and DC loads. It is an effective means to deal with energy crisis and environmental pollution by forming AC-DC hybrid distribution grids with existing AC distribution grids. However, the lack of reliable and stable relay protection technology is an important factor that restricts the development of hybrid AC/DC distribution grids. The purpose of this paper is to outline the research status of relay protection for domestic and foreign DC hybrid power distribution grids. It summarizes the research on the structure, fault characteristics and protection principles of DC distribution grids, and then analyzes the fault characteristics of AC/DC hybrid distribution grids and the influence of AC-DC interactions on the protection configuration. At the same time, the research on the relay protection of AC/DC converters is summarized. Finally, the research direction of relay protection technology for AC/DC hybrid power distribution grid is prospected.
The DC distribution grid can access friendly various types of distributed power supplies and DC loads. It is an effective means to deal with energy crisis and environmental pollution by forming AC-DC hybrid distribution grids with existing AC distribution grids. However, the lack of reliable and stable relay protection technology is an important factor that restricts the development of hybrid AC/DC distribution grids. The purpose of this paper is to outline the research status of relay protection for domestic and foreign DC hybrid power distribution grids. It summarizes the research on the structure, fault characteristics and protection principles of DC distribution grids, and then analyzes the fault characteristics of AC/DC hybrid distribution grids and the influence of AC-DC interactions on the protection configuration. At the same time, the research on the relay protection of AC/DC converters is summarized. Finally, the research direction of relay protection technology for AC/DC hybrid power distribution grid is prospected.
引文
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[3]汤广福,庞辉,贺之渊.先进交直流输电技术在中国的发展与应用[J].中国电机工程学报,2016,36(7):1760-1771.TANG Guangfu,PANG Hui,HE Zhiyuan.Development and application of advanced AC/DC transmission technology in China[J].Proceedings of the CSEE,2016,36(7):1760-1771.
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[6]鲁国正,高亮,梁智敏.电压源换流器接地方式对直流配电系统的影响[J].电力系统保护与控制,2016,44(12):75-80.LU Guozheng,GAO Liang,LIANG Zhimin.Influence of voltage source converter grounding mode on DCdistribution system[J].Power System Protection and Control,2016,44(12):75-80.
[7]戴志辉,葛红波,严思齐,等.柔性直流配电网接地方式对故障特性的影响分析[J].电网技术,2017,41(7):2353-2362.DAI Zhihui,GE Hongbo,YAN Siqi,et al.Analysis of the influence of the grounding mode of flexible DCdistribution network on the fault characteristics[J].Power System Technology,2017,41(7):2353-2362.
[8]LUO F,CHEN J,LIN X,et al.A novel solid state fault current limiter for DC power distribution network[C]//2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition,February 24-28,2008,Austin,TX,USA:1284-1289.
[9]宋国兵,高淑萍,蔡新雷,等.高压直流输电线路继电保护技术综述[J].电力系统自动化,2012,36(22):123-129.SONG Guobing,GAO Shuping,CAI Xinlei,et al.Survey of relay protection technology for HVDC transmission lines[J].Automation of Electric Power Systems,2012,36(22):123-129.
[10]束洪春,田鑫萃,张广斌,等.±800 k V直流输电线路的极波暂态量保护[J].中国电机工程学报,2011,31(22):96-104.SHU Hongchun,TIAN Xincui,ZHANG Guangbin,et al.Protection for±800 kV HVDC transmission lines using pole wave transients[J].Proceedings of the CSEE,2011,31(22):96-104.
[11]宋国兵,靳幸福,冉孟兵,等.基于并联电容参数识别的VSC-HVDC输电线路纵联保护[J].电力系统自动化,2013,37(15):76-82.SONG Guobing,JIN Xingfu,RAN Mengbing,et al.Pilot protection for VSC-HVDC transmission lines based on shunt capacitance parameter identification[J].Automation of Electric Power Systems,2013,37(15):76-82.
[12]肖文龙,王维博,刘勇,等.基于小波分析理论的特高压输电线路故障选相研究[J].电力系统保护与控制,2016,44(17):90-96.XIAO Wenlong,WANG Weibo,LIU Yong,et al.Research of fault phase selection on UHV transmission lines based on wavelet analysis[J].Power System Protection and Control,2016,44(17):90-96.
[13]武骁,何正友,彭少博,等.基于行波固有频率的特高压直流输电线路纵联保护方法[J].电力系统保护与控制,2013,41(11):67-73.WU Xiao,HE Zhengyou,PENG Shaobo,et al.A UHVDCtransmission line pilot protection method based on natural frequencies of traveling wave[J].Power System Protection and Control,2013,41(11):67-73.
[14]ZOU Guibin,HUANG Qiang,SONG Shenglan,et al.Novel transient-energy-based directional pilot protection method for HVDC line[J].Protection and Control of Modern Power Systems,2017,2(2):159-168.DOI:10.1186/s41601-017-0047-z.
[15]李学鹏,全玉生.基于数学形态学暂态特征提取的高压直流输电线路精确故障定位[J].现代电力,2007,24(2):20-25.LI Xuepeng,QUAN Yusheng.Accurate fault location for HVDC transmission line based on transient extraction of mathematical morphology[J].Modern Electric Power,2007,24(2):20-25.
[16]BUIGUES G,VALVERDE V,ZAMORA I,et al.DC fault detection in VSC-based HVDC grids used for the integration of renewable energies[C]//2015 International Conference on Clean Electrical Power(ICCEP),June16-18,2015,Taormina,Italy:666-673.
[17]郝勇奇,王倩,周士琼,等.基于LMD与Teager能量算子的VSC-HVDC输电线路故障定位[J].电力系统保护与控制,2017,45(1):81-88.HAO Yongqi,WANG Qian,ZHOU Shiqiong,et al.Fault location for VSC-HVDC transmission lines based on LMD and Teager energy operator[J].Power System Protection and Control,2017,45(1):81-88.
[18]杨亚宇,邰能灵,范春菊,等.基于计算电阻的高压直流输电线路纵联保护[J].电工技术学报,2017,32(7):84-94.YANG Yayu,TAI Nengling,FAN Chunju,et al.Longitudinal protection of HVDC transmission lines based on computational resistance[J].Acta Electrotechnical Sinica,2017,32(7):84-94.
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