基于异常点剔除的高压直流输电线路故障定位算法

丘映丹; 李海锋; 郭履星; 梁远升; 王小立; 罗美玲

doi:10.3969/j.issn.1000-7229.2015.12.014

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电力建设 ›› 2015, Vol. 36 ›› Issue (12) : 91-96. DOI: 10.3969/j.issn.1000-7229.2015.12.014

输配电技术

基于异常点剔除的高压直流输电线路故障定位算法

丘映丹1，李海锋1，郭履星1，梁远升1，王小立2，罗美玲2

作者信息 +

A Fault Location Algorithm Based on Picking out Outliers for HVDC Transmission Lines

QIU Yingdan1, LI Haifeng1, GUO Lüxing1, LIANG Yuansheng1, WANG Xiaoli2, LUO Meiling2

Author information +

文章历史 +

摘要

针对现有直流线路时域故障定位算法采用精确线路模型以及固定数据窗存在的不足，提出一种基于异常点剔除的时域故障定位算法。该算法依据在故障点处从两端计算得到的沿线电压分布具有差值最小的特点，充分利用故障后的暂态数据，采用冗余数据窗移动，通过故障定位函数测量得到多个定位结果，将得到的多个定位结果作为数据集，采用统计学中的基于距离的异常数据处理方法将数据集中的异常数据剔除，进而得到最终的定位结果。基于PSCAD/EMTDC搭建云南—广东±800 kV双极直流输电系统模型对所提算法进行了验证分析，结果表明所提算法实现原理简单，在直流线路全长范围内能实现准确故障定位，充分利用故障后的暂态数据，有效地提高了故障定位精度和可靠性。

Abstract

Aiming at the problem that the existing time-domain fault location algorithms used precise line model and fixed data window, this paper proposed a time-domain fault location algorithm based on picking out outliers. According to the characteristic that the voltage distributions obtained at both ends had minimum difference at the fault point, the proposed algorithm made full use of the post-fault transient data, and obtained the fault positioning results through fault location function when translating the redundant data window. Taking the positioning results as dataset, the distanced-based method in statistics was adopted to pick out the outliers of the dataset, thus the final fault location result could be obtained. The Yunnan-Guangdong ±800 kV bipolar DC transmission system model was established in PSCAD/EMTDC to verify the proposed algorithm. The results show that the proposed algorithm is simple in principle, can realize accurate fault location within the scope of whole length of line, make full use of post-fault transient data, and effectively improve the accuracy and reliability of fault location.

导出引用

丘映丹，李海锋，郭履星，梁远升，王小立，罗美玲. 基于异常点剔除的高压直流输电线路故障定位算法[J]. 电力建设. 2015, 36(12): 91-96 https://doi.org/10.3969/j.issn.1000-7229.2015.12.014

QIU Yingdan, LI Haifeng, GUO Lüxing, LIANG Yuansheng, WANG Xiaoli, LUO Meiling. A Fault Location Algorithm Based on Picking out Outliers for HVDC Transmission Lines[J]. Electric Power Construction. 2015, 36(12): 91-96 https://doi.org/10.3969/j.issn.1000-7229.2015.12.014

中图分类号： TM 721.1 TM 755

参考文献

［1］李立浧. 直流输电技术的发展及其在我国电网中的作用［J］. 电力设备, 2004, 11（5）: 1-5.
Li Licheng. Development of HVDC transmission technology and its role in power network in China ［J］. Electric Equipment, 2004, 11（5）: 1-5.
［2］梁旭明, 张平, 常勇. 高压直流输电技术现状及发展前景［J］. 电网技术, 2012, 36（4）: 1-9.
Liang Xuming, Zhang Ping, Chang Yong. Recent advances in high-voltage direct-current power transmission and its developing potential ［J］. Power System Technology, 2012, 36（4）: 1-9.
［3］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.
［4］Bahrman M P, HVDC transmission overview ［C］//2008 IEEE/PES Transmission and Distribution Conference & Exposition. Chicago: IEEE, 2008: 1-7．
［5］胡婷, 游大海, 金明亮. 输电线路故障测距研究现状及其发展［J］. 电网技术, 2006, 30（增刊）: 146-150.
Hu Ting, You Dahai, Jin Mingliang. Present situation and development of fault location for transmission lines ［J］, Power System Technology, 2006, 30（Supplement）: 146-150.
［6］宋国兵, 蔡新雷, 高淑萍, 等. 高压直流输电线路故障定位研究综述［J］. 电力系统保护与控制, 2012, 40（5）: 133-147.
Song Guobing, Cai Xinlei, Gao Shuping, et al. Survey of fault location research for HVDC transmission lines ［J］. Power System Protection and Control, 2012, 40（5）: 133-147.
［7］Farshad M, Sadeh J. A novel fault-location method for HVDC transmission lines based on similarity measure of voltage signals［J］. IEEE Transactions on Power Delivery, 2013, 28 （4）: 2483-2490.
［8］马超然. 输电线路行波故障定位技术发展与展望［J］. 继电器, 2007, 35（24）: 11-15.
Ma Chaoran. Prospect and development of transmission line fault location using travelling wave ［J］. Relay, 2007, 35（24）: 11-15.
［9］Zhang Y N, Liu Y H, Xu M, et al. A novel algorithm for HVDC line fault location based on variant travelling wave speed ［C］// 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies. Weihai: IEEE, 2011: 1459-1463.
［10］宋国兵, 周德生, 焦在滨, 等. 一种直流输电线路故障测距新原理［J］. 电力系统自动化, 2007, 31（24）: 57-61.
Song Guobing, Zhou Desheng, Jiao Zaibin, et al. A novel fault location principle for HVDC transmission line ［J］. Automation of Electric Power Systems, 2007, 31（24）: 57-61.
［11］Liang Y S, Wang G, Li H F. Time-domain fault-location method on HVDC transmission lines under unsynchronized two-end measurement and uncertain line parameters ［J］. IEEE Transactions on Power Delivery, 2015, 30（3）: 1031-1038.
［12］Suonan J L, Gao S P, Song G B. A novel fault-location method for HVDC transmission lines ［J］. IEEE Transactions on Power Delivery, 2010, 25（2）: 1203-1209.
［13］孟静. 异常数据挖掘算法研究与应用［D］. 无锡: 江南大学，2013.
Meng Jing. Outlier mining algorithm research and appliation［D］. Wuxi: Jiangnan University, 2013.
［14］蒋陆萍, 曾祥君, 李泽文, 等. 基于GPS实现电力系统高精度同步时钟［J］. 电网技术, 2011, 35（2）: 201-206.
Jiang Luping, Zeng Xiangjun, Li Zewen, et al. Realization of high accuracy synchronous clock for power system based on GPS ［J］. Power System Technology, 2011, 35（2）:201-206.
［15］童伟. 基于北斗II 代/GPS 的电力系统双模时间同步时钟的研制［J］. 电力建设, 2014, 35（4）: 81-85.
Tong Wei. Development of Beidou II/GPS dual-mode synchronization clock for power system ［J］. Electric Power Construction, 2014, 35（4）: 81-85.