利用测量波阻抗相位特征的高压直流输电线路纵联保护Pilot Protection for HVDC Transmission Lines Utilizing Phase Features of Measured Surge Impedance
李小鹏;汤涌;朱清代;庞广恒;张鹏;甄威;
摘要(Abstract):
为提高直流线路后备保护的可靠性和速动性,提出了一种利用测量波阻抗相位特征差异的直流线路纵联保护方法。通过对直流输电线路区内、外故障时线路两端测量波阻抗的相位特征分析可知,在一定频率范围内,直流线路内部故障时,线路两端测量波阻抗相位约为–90?;在直流线路外部故障时,线路两端测量波阻抗相位分别接近–90?和0?。区内、外故障下线路两端测量波阻抗相位差异明显,据此可以实现对区内外故障的判别。由于区内外故障时测量波阻抗的相位特征仅与直流线路边界和线路波阻抗有关,与故障距离、过渡电阻和故障类型等因素无关,因此该保护方法的门槛值易于整定。PSCAD/EMTDC仿真结果表明,该保护方法的动作性能不受故障距离、过渡电阻和故障类型的影响,具有良好的灵敏性和速动性。
关键词(KeyWords): 直流输电线路;测量波阻抗;直流线路边界;相位特征;纵联保护
基金项目(Foundation): 中国博士后科学基金(2016M592659)~~
作者(Author): 李小鹏;汤涌;朱清代;庞广恒;张鹏;甄威;
Email:
DOI: 10.13335/j.1000-3673.pst.2017.1242
参考文献(References):
- [1]姚良忠,吴婧,王志冰,等.未来高压直流电网发展形态分析[J].中国电机工程学报,2014,34(34):6007-6020.Yao Liangzhong,Wu Jing,Wang Zhibing,et al.Pattern analysis of future HVDC grid development[J].Proceedings of the CSEE,2014,34(34):6007-6020(in Chinese).
- [2]曹继丰,王钢,张海凤.高压直流线路保护配置及其优化研究[J].南方电网技术,2008,2(4):83-107.Cao Jifeng,Wang Gang,Zhang Haifeng.Study on line protection configuration and optimization of HVDC line[J].Southern Power System Technology,2008,2(4):83-107(in Chinese).
- [3]韩昆仑,蔡泽祥,徐敏,等.直流线路行波保护特征量动态特性与整定研究[J].电网技术,2013,37(1):255-260.Han Kunlun,Cai Zexiang,Xu Min,et al.Dynamic characteristics of characteristic parameters of travelling wave protection for HVDC transmission line and their setting[J].Power System Technology,2013,37(1):255-260(in Chinese).
- [4]李爱民,蔡泽祥,任达勇,等.高压直流输电控制与保护对线路故障的动态响应特性分析[J].电力系统自动化,2009,33(11):72-76.Li Aimin,Cai Zexiang,Ren Dayong,et al.Analysis on the dynamic performance characteristics of HVDC control and protections for the HVDC line faults[J].Automation of Electric Power Systems,2009,33(11):72-76(in Chinese).
- [5]宋国兵,褚旭,高淑萍,等.利用滤波器支路电流的高压直流输电线路全线速动保护[J].中国电机工程学报,2013,33(22):120-127.Song Guobing,Chu Xu,Gao Shuping,et al.A whole-line quick-action protection principle for HVDC transmission lines using one-end current of DC-filters[J].Proceedings of the CSEE,2013,33(22):120-127(in Chinese).
- [6]高杉,林圣,何正友.基于行波固有频率一、二次频差的HVDC输电线路纵联保护方法[J].电网技术,2015,39(7):2002-2009.Gao Shan,Lin Sheng,He Zhengyou.A HVDC transmission line pilot protection method based on frequency difference between dominant natural frequency and secondary natural frequency of traveling wave[J].Power System Technology,2015,39(7):2002-2009(in Chinese).
- [7]高淑萍,索南加乐,宋国兵,等.利用单端电流的高压直流输电线路全线速动保护[J].中国电机工程学报,2012,32(7):107-114.Gao Shuping,Suonan Jiale,Song Guobing,et al.A novel whole-line quick-action protection principle for HVDC transmission lines using one-end currents[J].Proceedings of the CSEE,2012,32(7):107-114(in Chinese).
- [8]束洪春,田鑫萃,董俊,等.±800 k V云广直流输电线路保护的仿真及分析[J].中国电机工程学报,2011,31(31):179-188.Shu Hongchun,Tian Xincui,Dong Jun,et al.Simulation and analyses for Yun-Guang±800 k V HVDC transmission line protection system[J].Proceedings of the CSEE,2011,31(31):179-188(in Chinese).
- [9]高淑萍,索南加乐,宋国兵,等.高压直流线路电流差动保护新原理[J].电力系统自动化,2010,34(17):45-49.Gao Shuping,Suonan Jiale,Song Guobing,et al.A new current differential protection principle for HVDC transmission lines[J].Automation of Electric Power Systems,2010,34(17):45-49(in Chinese).
- [10]束洪春,田鑫萃,董俊,等.利用电压相关性的±800 k V直流输电线路区内外故障判断方法[J].中国电机工程学报,2012,32(4):151-161.Shu Hongchun,Tian Xincui,Dong Jun,et al.Identification between internal and external faults of±800 k V HVDC transmission lines based on voltage correlation[J].Proceedings of the CSEE,2012,32(4):151-161(in Chinese).
- [11]孔飞,张保会,王艳婷.基于行波波形相关性分析的直流输电线路纵联保护方案[J].电力系统自动化,2014,38(20):108-114.Kong Fei,Zhang Baohui,Wang Yanting.A novel pilot protection scheme for HVDC transmission lines based on waveform correlation analysis of traveling wave[J].Automation of Electric Power Systems,2014,38(20):108-114(in Chinese).
- [12]刘琪,宋国兵.利用时域波形比对的高压直流输电线路电流差动保护[J].电力系统自动化,2015,39(24):87-95.Liu Qi,Song Guobing.A current differential protection using time-domain waveform comparison for HVDC transmission lines[J].Automation of Electric Power Systems,2015,39(24):87-95(in Chinese).
- [13]刘琪,宋国兵.基于电流偏差均值控制特性的高压直流输电线路纵联保护新原理[J].中国电机工程学报,2016,36(8):2159-2267.Liu Qi,Song Guobing.A novel pilot protection for HVDC transmission lines using mean current error control characteristics[J].Proceedings of the CSEE,2016,36(8):2159-2167(in Chinese).
- [14]李钊,邹贵彬,许春华,等.基于S变换的HVDC输电线路纵联保护方法[J].中国电机工程学报,2016,36(5):1228-1235.Li Zhao,Zou Guibin,Xu Chunhua,et al.S-transform based pilot protection method for HVDC transmission lines[J].Proceedings of the CSEE,2016,36(5):1228-1235(in Chinese).
- [15]束洪春,刘可真,朱盛强,等.±800 k V特高压直流输电线路单端电气量暂态保护[J].中国电机工程学报,2010,30(31):108-117.Shu Hongchun,Liu Kezhen,Zhu Shengqiang,et al.±800 k V UHVDC transmission line protection based on single end electrical transient signal[J].Proceedings of the CSEE,2010,30(31):108-117(in Chinese).
- [16]Xiaolei L,Osman A H,Malik O P.Hybrid traveling wave/boundary protection for monopolar HVDC line[J].IEEE Transactions on Power Delivery,2009,24(2):569-578.
- [17]张保会,孔飞,张嵩,等.高压直流输电线路单端暂态量保护装置的技术开发[J].中国电机工程学报,2013,33(4):179-185.Zhang Baohui,Kong Fei,Zhang Song,et al.Technical development of non-unit protection devices based on transient signals for HVDC transmission lines[J].Proceedings of the CSEE,2013,33(4):179-185(in Chinese).
- [18]杨亚宇,邰能灵,刘剑,等.利用边界能量的高压直流线路纵联保护方案[J].中国电机工程学报,2015,35(22):5757-5767.Yang Yayu,Tai Nengling,Liu Jian,et al.A pilot protection scheme for HVDC transmission lines based on boundary energy[J].Proceedings of the CSEE,2015,35(22):5757-5767(in Chinese).
- [19]李小鹏,滕予非,刘耀,等.基于测量波阻抗的高压直流输电线路纵联保护[J].电网技术,2017,41(2):618-624.Li Xiaopeng,Teng Yufei,Liu Yao,et al.Pilot protection based on measured surge impedance for HVDC transmission lines[J].Power System Technology,2017,41(2):618-624(in Chinese).
- [20]陶瑜.直流输电控制保护系统分析及应用[M].北京:中国电力出版社,2015:125-126.
- [21]李小鹏,汤涌,滕予非.基于反行波幅值比较的高压直流输电线路纵联保护方法[J].电网技术,2016,40(10):3095-3081.Li Xiaopeng,Tang Yong,Teng Yufei.Pilot protection method based on amplitude comparison of backward traveling wave for HVDC transmission lines[J].Power System Technology,2016,40(10):3095-3081(in Chinese).
- [22]张保会,张嵩,尤敏,等.高压直流线路单端暂态量保护研究[J].电力系统保护与控制,2010,38(15):18-23.Zhang Baohui,Zhang Song,You Min,et al.Research on transient-based protection for HVDC lines[J].Power System Protection and Control,2010,38(15):18-23(in Chinese).
- [23]束洪春,王永治,程春和,等.±800 k V直流输电线路雷击电磁暂态分析与故障识别[J].中国电机工程学报,2008,28(9):93-100.Shu Hongchun,Wang Yongzhi,Cheng Chunhe,et al.Analysis of electromagnetic transient and fault detection on±800 k V UHVDC transmission lines under lightning stroke[J].Proceedings of the CSEE,2008,28(9):93-100(in Chinese).