Distribution Feeder Grounding Fault Location Based on Hilbert-Huang Transform

doi:10.11985/2020.04.002

Abstract

Abstract:

It is of great significance for power supply reliability and smart grid to locate the point of failure on distribution lines quickly and accurately. A new ground fault traveling-wave signal time-frequency analysis method is put forward. It decomposes the line mode component and zero mode component of fault current based on empirical mode decomposition (EMD) to get multi-stage stable intrinsic mode function (IMF). The first IMF contains more frequency components which can reflect the mutation of signal. Transform the first IMF with Hilbert-Huang transformation to get the instantaneous frequency of signal. And then check the moment when the head wave of traveling wave arrived using the instantaneous frequency in the fig of time-frequency. Account the fault distance based on the time difference between the moment of head wave arrived of line mode component and zero mode component. Simulation analysis proves that this method is able to accurately account the distance of fault in the influence of the random factors such as fault transition resistance and the moment of fault.

Key words: Distribution feeder, Hilbert-Huang transformation, traveling wave, fault location, ground fault

CLC Number:

TM773

WANG Yansong, XU Hailiang, YI Jingbo, LIANG Shuo. Distribution Feeder Grounding Fault Location Based on Hilbert-Huang Transform[J]. Journal of Electrical Engineering, 2020, 15(4): 18-26.

Figures/Tables 10

References 20

[1]	赵卫斌, 王敬华, 方善忠. 基于边端协同的小电流接地故障区段定位方法[J]. 电测与仪表,1-7[2020-08-19]. http://kns.cnki.net/kcms/detail/23.1202.TH.20191116.1536.008.html.
	ZHAO Weibin, WANG Jinghua, FANG Shanzhong. Section location method of small current ground fault based on edge-end coordination[J]. Electrical Measurement & Instrumentation,1-7[2020-08-19]. http:// kns.cnki.net/kcms/detail/23.1202.TH.20191116.1536.008.html.
[2]	杨东升, 王素宁, 陈建枫, 等. 基于随机矩阵的配电网单相接地故障区段定位[J]. 电器与能效管理技术, 2019(14):64-68,76.
	YANG Dongsheng, WANG Suning, CHEN Jianfeng, et al. Location of single-phase grounding fault section based on random matrix[J]. Electrical & Energy Management Technology, 2019(14):64-68,76.
[3]	张婉婕, 王超, 周大洲, 等. 小电流接地下10 kV馈线单相接地故障定位方法[J]. 科学技术与工程, 2018,18(5):236-241.
	ZHANG Wanjie, WANG Chao, ZHOU Dazhou, et al. Method for locating single phase earth fault of 10 kV feeder under small current grounding[J]. Science Technology and Engineering, 2018,18(5):236-241.
[4]	李卫国, 王旭光, 卢广旗, 等. 基于DOST能量相似度的有源配电网故障区间定位方法[J]. 电测与仪表, 2019,56(6):50-55.
	LI Weiguo, WANG Xuguang, LU Guangqi, et al. A fault section location method for active distribution network based on discrete orthogonal S-transform and energy similarity[J]. Electrical Measurement & Instrumentation, 2019,56(6):50-55.
[5]	许冲冲, 罗勋华, 郭上华, 等. 基于时间序列压缩动态时间弯曲距离故障区段定位[J]. 电测与仪表, 2019,56(10):127-133.
	XU Chongchong, LUO Xunhua, GUO Shanghua, et al. A fault section location method based on dynamic time warping distance with compress time sequence[J]. Electrical Measurement & Instrumentation, 2019,56(10):127-133.
[6]	田鹏, 秦贺, 侯乃乾, 等. 基于边缘计算和广域同步测量技术的配电网故障定位方法[J]. 电气工程学报, 2020,15(1):83-88.
	TIAN Peng, QIN He, HOU Naiqian, et al. Fault location method for distribution network based on edge computing and wide area synchronous measurement technology[J]. Journal of Electrical Engineering, 2020,15(1):83-88.
[7]	万信书, 方连航, 梁钰, 等. 基于三相电流幅值分析的小电流单相接地故障区段定位方法[J]. 电力科学与技术学报, 2020,35(4):49-57.
	WAN Xinshu, FANG Lianhang, LIANG Yu, et al. Method of fault section location for the small current single-phase-to-ground fault based on the amplitude analysis of three-phase current[J]. Journal of Electric Power Science and Technology, 2020,35(4):49-57.
[8]	宗伟林, 邹运, 戴经纬, 等. 基于相电流增量的故障区间定位新方法[J]. 电力科学与技术学报, 2020,35(2):128-134.
	ZONG Weilin, ZOU Yun, DAI Jingwei, et al. Novel method of fault section location based on phase current increment[J]. Journal of Electric Power Science and Technology, 2020,35(2):128-134.
[9]	童宁, 张雪松, 赵波, 等. 基于相电流有效能量循迹法的配电网单相故障定位[J]. 电力系统自动化, 2018,42(19):140-150.
	TONG Ning, ZHANG Xuesong, ZHAO Bo, et al. Fault location method for single-phase grounding fault in distribution network based on trajectory of phase current valid energy[J]. Automation of Electric Power Systems, 2018,42(19):140-150.
[10]	赵传宗, 王中杰, 穆景龙, 等. 基于小波变换和遗传算法的小电流接地故障定位技术研究[J]. 工业安全与环保, 2019,45(1):62-65.
	ZHAO Chuanzong, WANG Zhongjie, MU Jinglong, et al. Research on single phase-earth fault location in distribution network based on wavelet and genetic algorithm[J]. Industrial Safety and Environmental Protection, 2019,45(1):62-65.
[11]	张建文, 周鹏, 陈焕栩. 基于改进阻抗法的单相接地故障测距仿真[J]. 电测与仪表, 2018,55(3):84-87.
	ZHANG Jianwen, ZHOU Peng, CHEN Huanxu. Simulation of transmission line single-phase ground fault location based on improved impedance method[J]. Electrical Measurement & Instrumentation, 2018,55(3):84-87.
[12]	陈志伟, 舒勤. 基于小波包变换的混联配电网故障定位方法[J]. 广东电力, 2019,32(1):100-108.
	CHEN Zhiwei, SHU Qin. Fault location method for hybrid distribution network based on wavelet transformation[J]. Guangdong Electric Power, 2019,32(1):100-108.
[13]	彭华, 朱永利. 基于apFFT频谱校正和XGBoost的风电场集电线路单相接地故障测距[J]. 电工技术学报, 1-10[2020-08-19]. https://doi.org/10.19595/j.cnki.1000- 6753.tces191584.
	PENG Hua, ZHU Yongli. Single phase grounding fault location for power lines of wind farm based on apFFT spectrum correction and XGB-oost algorithm[J]. Transactions of China Electrotechnical Society, 1-10[2020-08-19]. https://doi.org/10.19595/j.cnki.1000- 6753.tces191584.
[14]	齐郑, 杭天琦, 李悦悦. 消弧线圈并联小电阻接地方式下的行波故障测距[J]. 电力系统自动化, 2020,44(1):175-182.
	QI Zheng, HANG Tianqi, LI Yueyue. Traveling wave fault location for arc-suppression coil in parallel with low resistance grounding mode[J]. Automation of Electric Power Systems, 2020,44(1):175-182.
[15]	齐郑, 杭天琦, 林健雄, 等. 含单相配电支路的配电网单相接地故障行波测距技术[J]. 电力系统自动化, 2018,42(20):144-149,150-152,176.
	QI Zheng, HANG Tianqi, LIN Jianxiong, et al. Technology of traveling wave fault location on single phase-to-ground fault in distribution network with single-phase power[J]. Automation of Electric Power Systems, 2018,42(20):144-149,150-152,176.
[16]	CHEN R, YIN X, YIN X G, et al. Computational fault time difference-based fault location method for branched power distribution networks. IEEE Access, 2019,(7):181972-181982.
[17]	戴锋, 王政, 程孟晗, 等. 考虑短线路折反射的配电网故障定位研究[J]. 电力系统保护与控制, 2020,48(16), 122-130.
	DAI Feng, WANG Zheng, CHENG Menghan, et al. Study on fault location considering refraction and reflection of short lines in a distribution network[J]. Power System Protection and Control, 2020,48(16):122-130.
[18]	万庆祝, 赵蕾. 基于暂态特征的配电网线路故障定位专家系统研究[J]. 电气工程学报, 2016,11(11):52-57. doi: 11.11985/2016.11.008
	WAN Qingzhu, ZHAO Lei. Research on fault location expert system of distribution network based on transient characteristics[J]. Journal of Electrical Engineering, 2016,11(11):52-57.
[19]	田书, 尚鹏辉, 寿好俊. 基于EEMD的电缆故障测距方法仿真研究[J]. 测控技术, 2016,35(11):36-39,43.
	TIAN Shu, SHANG Penghui, SHOU Junhao. A double terminal cable fault location method based on EEMD[J]. Measurement & Control Technology, 2016,35(11):36-39,43.
[20]	刘学民. 基于Hilbert-Huang变换的配电网电缆接地故障定位研究[D]. 北京:中国石油大学, 2010.
	LIU Xuemin. Research of the location of power cable earth fault in distribution system based on Hilbert-Huang transform[D]. Beijing:China University of Petroleum(East China), 2010.

短路电阻/Ω	故障初相角/(°)	线模波波头到达时刻/s	零模波波头到达时刻/s	实际故障位置/km	测距结果/km
1	90	0.125 005	0.125 007	1	1.020 7
1	90	0.125 010	0.125 015	2	2.082 3
10	90	0.125 010	0.125 015	2	2.082 3
100	90	0.125 010	0.125 015	2	2.082 3
200	90	0.125 010	0.125 015	2	2.082 3
200	90	0.125 010	0.125 015	2	2.082 3
300	60	0.125 010	0.125 015	2	2.082 3
500	60	0.125 015	0.125 023	3	3.062 2
500	30	0.125 021	0.125 031	4	4.123 8
300	30	0.125 026	0.125 038	5	5.144 5

短路电阻/Ω	故障初相角/(°)	线模波头到达时刻/s	零模波头到达时刻/s	实际故障位置/km	测距结果/km
1	90	0.125 005	0.125 007	1	1.020 7
1	90	0.125 010	0.125 015	2	2.082 3
10	90	0.125 010	0.125 015	2	2.082 3
100	90	0.125 010	0.125 015	2	2.082 3
200	90	0.125 010	0.125 015	2	2.082 3
100	30	0.125 010	0.125 015	2	2.082 3
100	60	0.125 010	0.125 015	2	2.082 3
200	90	0.125 015	0.125 024	3	3.103 1
50	90	0.125 021	0.125 031	4	4.123 8
50	90	0.125 026	0.125 039	5	5.185 4