《机电工程》杂志,月刊( 详细... )
中国标准连续出版物号: ISSN 1001-4551 CN 33-1088/TH
主办单位:浙江省机电集团有限公司
浙江大学
主编:陈 晓
副 主 编:唐任仲、罗向阳(执行主编)
总 经 理:罗向阳
出 版:浙江《机电工程》杂志社有限公司
地 址:杭州市上城区延安路95号浙江省机电集团大楼二楼211、212室
电话Tel:+86-571-87041360、87239525
E-mail:meem_contribute@163.com
国外发行:中国国际图书贸易总公司
订阅:全国各地邮局 国外代号:M3135
国内发行:浙江省报刊发行局
邮发代号:32-68
广告发布登记证:杭上市管广发G-001号
在线杂志 |
当前位置: 机电工程 >>在线杂志 |
考虑TA饱和的双端故障定位新方法
作者:王波1,郑煜2,陈晓刚2 日期:2010-03-26/span> 浏览:3991 查看PDF文档
考虑TA饱和的双端故障定位新方法
王波1,郑煜2,陈晓刚2
(1.浙江大学 电气工程学院,浙江 杭州 310027;2.杭州电力局,浙江 杭州 310009)
摘要:针对线路分布参数模型中电流互感器(TA)饱和导致某一侧电流畸变或不可用的问题,提出了一种适用于任意故障类型的输电线路故障测距新算法。该方法利用两侧电压和未饱和侧电流,根据过渡阻抗的纯电阻性质,得出当且仅当在故障点处无功功率为零。进而利用了一种实用的最优化算法,该测距方法无需事先判断故障类型,无需求解复杂的方程,而是利用搜索迭代的方法。PSCAD的仿真结果也证明了该方法正确、有效,并且不受故障类型、过渡电阻等因素的影响。
关键词:故障测距;线路保护;电流互感器饱和;分布参数
中图分类号:TM711文献标识码:A文章编号:1001-4551(2010)02-0104-03
Novel fault location algorithm for two-terminal transmission lines by saturation of current transformers
WANG Bo1, ZHENG Yu2, CHEN Xiao-gang2
(1.College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;2.Hangzhou Bureau, Hangzhou 310009, China)
Abstract: Aiming at the problem of that current transformer(TA) saturation leads to current distortion or be not awailable in distributed parameter transmission line model, a new fault location algorithm was proposed considering the saturation of current transformers. The voltage and current profiles along a transmission line were calculated by using sequential network models, the two terminal voltages and the currents from the unsaturated end. Since fault impedance was of pure resistance, the fault could be accurately located at where the reactive power was zero. So the method was independent of fault type, without solving complex equations. Results of PSCAD based simulation prove that the method is correct and efficient.
Key words: fault location; line protection; current transformer(TA) saturation; distributed parameter
参考文献(References):
[1]董新洲,葛耀中.一种使用两端电气量的高压输电线路故障测距算法[J].电力系统自动化,1995,19(8):47-53.
[2]陈铮,董新洲,罗承沐.单端工频电气量故障测距算法的鲁棒性[J].清华大学学报:自然科学版,2003,43(3):310-313.
[3]KAWADY T, STENZEL J. A practical fault location approach for double circuit transmission lines using single end data[J]. IEEE Transactions on Power Delivery,2003,18(4):1166-1173.
[4]FAN Chun-ju, DU Xiu-hua, LI Sheng-fang, et al. An adaptive fault location technique based on PMU for transmission line[C]//IEEE,Power Engineering Soliety General Meeting, Tampa,2007:1-6.
[5]JIANG Joe-air, YANG Jun-zhe, LIN Ying-hong, et al. An adaptive PMU based fault detection/location technique for transmission lines—part I: theory and algorithms[J]. IEEE Transactions on Power Delivery,2000,15(2):486-493.
[6]JIANG Joe-air, YANG Jun-zhe, LIN Ying-hong, et al. An adaptive PMU based fault detection/location technique for transmission lines—part II: PMU implementation and performance evaluation [J]. IEEE Transactions on Power Delivery,2000,15(4):1136-1146.
[7]ZAMORA I, MINAMBRES J F, MAZON A J, et al. Fault location on two-terminal transmission lines based on voltages[J]. IEE Proceedings: Generation, Transmission and Distribution,1996,143(1):1-6.
[8]BALCEREK P, IZYKOWSKI J. Improved unsynchronized two-end algorithm for locating fault s in power transmission lines[C]. Proceedings of IEEE Bologna Conference on Power Tech. Bologna, Italy: Piscataway,2003.
[9]SAHA M M, IZYKOWSKJ J, ROSOLOWSKI E. A two-end method of fault location immune to saturation of current transformers[C]//Proceedings of IEE 8th International Conference on Developments in Power System Protection, Amsterdam, Netherlands. Stevenage,2004:172-175.
友情链接