混压同塔四回输电线路零序参数测量方法
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摘要
混压同塔四回输电线路的电磁耦合情况复杂,待测零序参数众多,现有方法不能精确测量其零序参数。提出了一种混压同塔四回线路零序参数精确测量方法,建立了混压同塔四回线路的分布参数模型,通过求解传输线方程,得到了与混压同塔四回线路零序参数相关的传输矩阵。利用多次独立测量方式下混压同塔四回输电线路两端的同步电压和电流测量数据,结合传输矩阵,得到了混压同塔四回线路18个零序参数的计算方法。针对实际应用中可能出现感应电压干扰的问题,提出综合使用增量法的解决方案。利用PSCAD对该测量方法进行了仿真验证。仿真结果表明,该方法克服了长距离线路的分布效应影响,修正现有方法的测量模型,解决了分布参数模型不精确的问题。零序参数计算结果不受理论值初值影响,适用于任意电压等级的混压同塔四回线路。该方法的测量步骤简便,可以在线路完全停电或部分停电条件下使用。
The electromagnetic coupling of mix-voltage quadruple-circuit transmission lines is complex which leads many zero sequence parameters needed to be measured. The existing methods can't accurately measure these parameters. A method to accurately measure the zero sequence parameters of mix-voltage quadruple-circuit transmission lines was proposed. The distributed parameter model of the mix-voltage quadruple-circuit transmission lines was established. The transmission matrix which was related with these zero sequence parameters was obtained by solving transmission equations. The synchronous voltage and current data measured at the two ends of the four circuits and the transmission matrix were employed. And the calculation method of 18 zero sequence parameters was derived. Induced voltage interference was considered and an incremental method was put forward to eliminate it. PSCAD was employed to verify the proposed measurement method. The simulation results show that the proposed method overcomes the distribution effect of long distance transmission lines. The measurement model of the existing method was modified. The problem that the distributed parameter model of the existing method is not accurate enough was solved. The proposed method was hardly affected by the initial theoretical values and can apply to quadruple-circuit transmission lines with any voltage classes. The measurement procedure is simple and the proposed method can be used in the transmission lines which are completely or partly out of service.
The electromagnetic coupling of mix-voltage quadruple-circuit transmission lines is complex which leads many zero sequence parameters needed to be measured. The existing methods can't accurately measure these parameters. A method to accurately measure the zero sequence parameters of mix-voltage quadruple-circuit transmission lines was proposed. The distributed parameter model of the mix-voltage quadruple-circuit transmission lines was established. The transmission matrix which was related with these zero sequence parameters was obtained by solving transmission equations. The synchronous voltage and current data measured at the two ends of the four circuits and the transmission matrix were employed. And the calculation method of 18 zero sequence parameters was derived. Induced voltage interference was considered and an incremental method was put forward to eliminate it. PSCAD was employed to verify the proposed measurement method. The simulation results show that the proposed method overcomes the distribution effect of long distance transmission lines. The measurement model of the existing method was modified. The problem that the distributed parameter model of the existing method is not accurate enough was solved. The proposed method was hardly affected by the initial theoretical values and can apply to quadruple-circuit transmission lines with any voltage classes. The measurement procedure is simple and the proposed method can be used in the transmission lines which are completely or partly out of service.
引文
[1]张广斌,束洪春,于继来,等.不依赖双侧时钟同步的输电线双端行波测距[J].电工技术学报,2015,30(20):199-209.Zhang Guangbin,Shu Hongchun,Yu Jilai,et al.Double-ended travelling wave fault location independent of two side time synchronization[J].Transactions of China Electrotechnical Society,2015,30(20):199-209.
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[7]孙秋芹,汪沨,刘洋,等.特高压输电线路潜供电流的暂态特性研究[J].电工技术学报,2016,31(3):97-103.Sun Qiuqin,Wang Feng,Liu Yang,et al.Research on transient characteristics of secondary arc current of ultra high voltage transmission lines[J].Transactions of China Electrotechnical Society,2016,31(3):97-103.
[8]吉兴全,杜彦镔,李可军,等.一种超高压输电线路动态增容方法[J].电力系统保护与控制,2015,43(3):102-106.Ji Xingquan,Du Yanbin,Li Kejun,et al.A method of dynamic rating of ultra high voltage transmission line[J].Power System Protection and Control,2015,43(3):102-106.
[9]胡志坚,陈允平,徐玮,等.基于微分方程的互感线路参数带电测量研究与实现[J].中国电机工程学报,2005,25(2):28-33.Hu Zhijian,Chen Yunping,Xu Wei,et al.Principles and realization of live line measurement of parameters of transmission lines with mutual inductance based on differential equations[J].Proceedings of the CSEE,2005,25(2):28-33.
[10]田书,刘芳芳,任晓明.基于暂态量的同塔双回线路故障选相研究[J].电力系统保护与控制,2015,43(1):50-54.Tian Shu,Liu Fangfang,Ren Xiaoming.Research on transient-based faulty phase selection for doublecircuit lines on the same tower[J].Power System Protection and Control,2015,43(1):50-54.
[11]霍锋,万启发,谷定燮,等.1000k V与500k V交流线路同塔架设相间放电特性及绝缘配合[J].中国电机工程学报,2012,32(34):142-150.Huo Feng,Wan Qifa,Gu Dingxie,et al.Flashover characteristics and insulation coordination of phase-tophase air gaps for AC transmission line with 1000 k V double-circuit and 500 k V double-circuit on the same tower[J].Proceedings of the CSEE,2012,32(34):142-150.
[12]班连庚,王晓刚,白宏坤,等.同塔架设的220k V/500 k V输电线路感应电流与感应电压仿真分析[J].电网技术,2009,33(6):45-49.Ban Liangeng,Wang Xiaogang,Bai Hongkun,et al.Simulative analysis of induced voltages and currents among multi circuit 220 k V and 500 k V transmission lines on same tower[J].Power System Technology,2009,33(6):45-49.
[13]Halim S A,Bakar A H A,Illias H A,et al.Lightning back flashover tripping patterns on a 275/132 k V quadruple circuit transmission line in Malaysia[J].IET Science Measurement Technology,2016,10(4):344-354.
[14]李建明,朱康.高压电气设备试验方法[M].北京:中国电力出版社,2001:258-265.
[15]王春娜,梁志瑞,薛志英,等.互感线路零序参数带电测量方法研究[J].电力自动化设备,2008,28(4):87-89.Wang Chunna,Liang Zhirui,Xue Zhiying,et al.Live line measurement of zero-sequence parameters for transmission lines with mutual inductance[J].Electric Power Automation Equipment,2008,28(4):87-89.
[16]Hu Zhijian,Chen Yunping.New method of live line measuring the inductance parameters of transmission lines based on GPS technology[J].IEEE Transactions on Power Delivery,2008,23(3):1288-1295.
[17]Hu Zhijan,Xu Zhongzhu,Fan Jiacheng,et al.Novel method of live line measuring the zero sequence parameters of transmission lines with mutual inductance[C]//IEEE Power and Energy Society General Meeting,Calgary,2009:1-4.
[18]Hu Zhijian,Xiong Min,Shang Haozhi,et al.Antiinterference measurement methods of the coupled transmission line capacitance parameters based on the harmonic components[J].IEEE Transactions on Power Delivery,2016,31(6):2464-2472.
[19]黄胜利,周孝信.分布参数输电线路的时变动态相量模型及其仿真[J].中国电机工程学报,2002,22(11):1-5.Huang Shengli,Zhou Xiaoxin.The time-varyinm phasor model of the distributed parameter transmission line and its simulation[J].Proceedings of the CSEE,2002,22(11):1-5.
[20]Song Guobing,Xu Chu,Gao Shuping,et al.Novel distance protection based on distributed parameter model for long-distance transmission lines[J].IEEE Transactions on Power Delivery,2013,28(4):2116-2123.
[21]Hu Zhijian,Xiong Min,Li Chuanqi,et al.New approach for precisely measuring the zero sequence parameters of long-distance double-circuit transmission lines[J].IEEE Transactions on Power Delivery,2016,31(4):1627-1635.
[22]梁睿,杨学君,薛雪,等.零序分布参数的单相接地故障精确定位研究[J].电工技术学报,2015,30(12):472-479.Liang Rui,Yang Xuejun,Xue Xue,et al.Study of accurate single-phase grounding fault location based on distributed parameter theory using data of zero sequence components[J].Transactions of China Electrotechnical Society,2015,30(12):472-479.
[23]胡志坚,熊敏,李岩,等.超高压同塔四回输电线路零序参数测量方法[J].中国电机工程学报,2015,35(17):4548-4556.Hu Zhijian,Xiong Min,Li Yan,et al.Measurement method of zero sequence parameters of EHV fourcircuit transmission lines on the same tower[J].Proceedings of the CSEE,2015,35(17):4548-4556.
[24]邓军,肖遥,郝艳捧.新型同塔双回高压直流输电线路分布参数测量方法及工程应用[J].电力自动化设备,2016,36(3):154-158.Deng Jun,Xiao Yao,Hao Yanpeng.Measuring of distributed parameter and its application for dual-loop HVDC transmission lines on same tower[J].Electric Power Automation Equipment,2016,36(3):154-158.
[25]刘琦,邰能灵,范春菊,等.同塔四回不对称参数线路的相模变换[J].电工技术学报,2015,30(18):171-180.Liu Qi,Tai Nengling,Fan Chunju,et al.Phase-mode transformation of asymmetry-parameter four-parallel lines on the same tower[J].Transactions of China Electrotechnical Society,2015,30(18):171-180.
[26]Tripathy P,Srivastava S C,Singh S N.A modified TLS-ESPRIT-based method for low-frequency mode identification in power systems utilizing synchrophasor measurements[J].IEEE Transactions on Power Systems,2011,26(2):719-727.
[27]赵艳军,陈晓科,尹建华,等.一种新型的同塔双回输电线路工频阻抗参数测量方法[J].电工技术学报,2015,30(2):255-260.Zhao Yanjun,Chen Xiaoke,Yin Jianhua,et al.A new measurement method of the power frequency impedance parameters of double-circuit transmission lines on same tower[J].Transactions of China Electrotechnical Society,2015,20(2):255-260.
[2]陈仕龙,张杰,刘红锐,等.特高压直流输电线路单端电流方向暂态保护[J].电工技术学报,2016,31(2):171-177.Chen Shilong,Zhang Jie,Liu Hongrui,et al.A singleended current direction transient protection of UHVDC transmission line[J].Transactions of China Electrotechnical Society,2016,31(2):171-177.
[3]郭振威,姚建刚,康童,等.一种输电线路超高速方向保护方法[J].电工技术学报,2016,31(22):168-177.Guo Zhenwei,Yao Jiangang,Kang Tong,et al.A method for directional ultra-high-speed protection of transmission lines[J].Transactions of China Electrotechnical Society,2016,31(22):168-177.
[4]束洪春,曹璞璘,杨竞及,等.考虑互感器传变特性的输电线路暂态保护雷击干扰与线路故障识别方法[J].电工技术学报,2015,30(3):1-12.Shu Hongchun,Cao Pulin,Yang Jingji,et al.A method to distinguish between fault and lightning disturbance on transmission lines based on CVT secondary voltage and CT secondary current[J].Transactions of China Electrotechnical Society,2015,30(3):1-12.
[5]张苏敏,古斌,曹良丰,等.输电线路相差保护新原理[J].电力系统保护与控制,2015,43(2):76-83.Zhang Sumin,Gu Bin,Cao Liangfeng,et al.A novel phase comparison protection principle for transmission lines[J].Power System Protection and Control,2015,43(2):76-83.
[6]胡志坚,尚浩志,贾超,等.对强干扰环境下异频法测量输电线路零序阻抗的分析与实证[J].中国电机工程学报,2014,34(30):5434-5441.Hu Zhijian,Shang Haozhi,Jia Chao,et al.Analysis and validation of non-power frequency methods for measuring zero sequence impedances of transmission lines under strong interference environment[J].Proceedings of the CSEE,2014,34(30):5434-5441.
[7]孙秋芹,汪沨,刘洋,等.特高压输电线路潜供电流的暂态特性研究[J].电工技术学报,2016,31(3):97-103.Sun Qiuqin,Wang Feng,Liu Yang,et al.Research on transient characteristics of secondary arc current of ultra high voltage transmission lines[J].Transactions of China Electrotechnical Society,2016,31(3):97-103.
[8]吉兴全,杜彦镔,李可军,等.一种超高压输电线路动态增容方法[J].电力系统保护与控制,2015,43(3):102-106.Ji Xingquan,Du Yanbin,Li Kejun,et al.A method of dynamic rating of ultra high voltage transmission line[J].Power System Protection and Control,2015,43(3):102-106.
[9]胡志坚,陈允平,徐玮,等.基于微分方程的互感线路参数带电测量研究与实现[J].中国电机工程学报,2005,25(2):28-33.Hu Zhijian,Chen Yunping,Xu Wei,et al.Principles and realization of live line measurement of parameters of transmission lines with mutual inductance based on differential equations[J].Proceedings of the CSEE,2005,25(2):28-33.
[10]田书,刘芳芳,任晓明.基于暂态量的同塔双回线路故障选相研究[J].电力系统保护与控制,2015,43(1):50-54.Tian Shu,Liu Fangfang,Ren Xiaoming.Research on transient-based faulty phase selection for doublecircuit lines on the same tower[J].Power System Protection and Control,2015,43(1):50-54.
[11]霍锋,万启发,谷定燮,等.1000k V与500k V交流线路同塔架设相间放电特性及绝缘配合[J].中国电机工程学报,2012,32(34):142-150.Huo Feng,Wan Qifa,Gu Dingxie,et al.Flashover characteristics and insulation coordination of phase-tophase air gaps for AC transmission line with 1000 k V double-circuit and 500 k V double-circuit on the same tower[J].Proceedings of the CSEE,2012,32(34):142-150.
[12]班连庚,王晓刚,白宏坤,等.同塔架设的220k V/500 k V输电线路感应电流与感应电压仿真分析[J].电网技术,2009,33(6):45-49.Ban Liangeng,Wang Xiaogang,Bai Hongkun,et al.Simulative analysis of induced voltages and currents among multi circuit 220 k V and 500 k V transmission lines on same tower[J].Power System Technology,2009,33(6):45-49.
[13]Halim S A,Bakar A H A,Illias H A,et al.Lightning back flashover tripping patterns on a 275/132 k V quadruple circuit transmission line in Malaysia[J].IET Science Measurement Technology,2016,10(4):344-354.
[14]李建明,朱康.高压电气设备试验方法[M].北京:中国电力出版社,2001:258-265.
[15]王春娜,梁志瑞,薛志英,等.互感线路零序参数带电测量方法研究[J].电力自动化设备,2008,28(4):87-89.Wang Chunna,Liang Zhirui,Xue Zhiying,et al.Live line measurement of zero-sequence parameters for transmission lines with mutual inductance[J].Electric Power Automation Equipment,2008,28(4):87-89.
[16]Hu Zhijian,Chen Yunping.New method of live line measuring the inductance parameters of transmission lines based on GPS technology[J].IEEE Transactions on Power Delivery,2008,23(3):1288-1295.
[17]Hu Zhijan,Xu Zhongzhu,Fan Jiacheng,et al.Novel method of live line measuring the zero sequence parameters of transmission lines with mutual inductance[C]//IEEE Power and Energy Society General Meeting,Calgary,2009:1-4.
[18]Hu Zhijian,Xiong Min,Shang Haozhi,et al.Antiinterference measurement methods of the coupled transmission line capacitance parameters based on the harmonic components[J].IEEE Transactions on Power Delivery,2016,31(6):2464-2472.
[19]黄胜利,周孝信.分布参数输电线路的时变动态相量模型及其仿真[J].中国电机工程学报,2002,22(11):1-5.Huang Shengli,Zhou Xiaoxin.The time-varyinm phasor model of the distributed parameter transmission line and its simulation[J].Proceedings of the CSEE,2002,22(11):1-5.
[20]Song Guobing,Xu Chu,Gao Shuping,et al.Novel distance protection based on distributed parameter model for long-distance transmission lines[J].IEEE Transactions on Power Delivery,2013,28(4):2116-2123.
[21]Hu Zhijian,Xiong Min,Li Chuanqi,et al.New approach for precisely measuring the zero sequence parameters of long-distance double-circuit transmission lines[J].IEEE Transactions on Power Delivery,2016,31(4):1627-1635.
[22]梁睿,杨学君,薛雪,等.零序分布参数的单相接地故障精确定位研究[J].电工技术学报,2015,30(12):472-479.Liang Rui,Yang Xuejun,Xue Xue,et al.Study of accurate single-phase grounding fault location based on distributed parameter theory using data of zero sequence components[J].Transactions of China Electrotechnical Society,2015,30(12):472-479.
[23]胡志坚,熊敏,李岩,等.超高压同塔四回输电线路零序参数测量方法[J].中国电机工程学报,2015,35(17):4548-4556.Hu Zhijian,Xiong Min,Li Yan,et al.Measurement method of zero sequence parameters of EHV fourcircuit transmission lines on the same tower[J].Proceedings of the CSEE,2015,35(17):4548-4556.
[24]邓军,肖遥,郝艳捧.新型同塔双回高压直流输电线路分布参数测量方法及工程应用[J].电力自动化设备,2016,36(3):154-158.Deng Jun,Xiao Yao,Hao Yanpeng.Measuring of distributed parameter and its application for dual-loop HVDC transmission lines on same tower[J].Electric Power Automation Equipment,2016,36(3):154-158.
[25]刘琦,邰能灵,范春菊,等.同塔四回不对称参数线路的相模变换[J].电工技术学报,2015,30(18):171-180.Liu Qi,Tai Nengling,Fan Chunju,et al.Phase-mode transformation of asymmetry-parameter four-parallel lines on the same tower[J].Transactions of China Electrotechnical Society,2015,30(18):171-180.
[26]Tripathy P,Srivastava S C,Singh S N.A modified TLS-ESPRIT-based method for low-frequency mode identification in power systems utilizing synchrophasor measurements[J].IEEE Transactions on Power Systems,2011,26(2):719-727.
[27]赵艳军,陈晓科,尹建华,等.一种新型的同塔双回输电线路工频阻抗参数测量方法[J].电工技术学报,2015,30(2):255-260.Zhao Yanjun,Chen Xiaoke,Yin Jianhua,et al.A new measurement method of the power frequency impedance parameters of double-circuit transmission lines on same tower[J].Transactions of China Electrotechnical Society,2015,20(2):255-260.