Research on Arc Grounding Fault Selection Method of Distribution Network Based on Wavelet Analysis

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Research on Arc Grounding Fault Selection Method of Distribution Network Based on Wavelet Analysis

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[1]LI Jingli,REN Junyue,YUAN Hao,et al.Research on Arc Grounding Fault Selection Method of Distribution Network Based on Wavelet Analysis[J].Journal of Zhengzhou University (Engineering Science),2023,44(05):69-76.[doi:10.13705/j.issn.1671-6833.2023.05.011]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 44卷 Number of periods: 2023 05 Page number: 69-76 Column: Public date: 2023-08-20

Title:: Research on Arc Grounding Fault Selection Method of Distribution Network Based on Wavelet Analysis

Author(s):: LI Jingli ; REN Junyue; YUAN Hao; WANG Zijian; LEI Hong; ZHAO Zijing

Keywords:: resonant grounding system; arc grounding fault; wavelet analysis; time-frequency domain decomposition; fault routing

CLC:: TM862；TM74

DOI:: 10.13705/j.issn.1671-6833.2023.05.011

Abstract:: Chinese urban low-voltage distribution network capacitance current rose sharply, single-phase ground fault arc was difficult to self-extinguish and easy to produce arc light ground overvoltage and lead to accidents. The resonant grounding system (NES) arc ground fault reliable line selection method to ensure the stable and safe operation of the distribution network basis was explored. The equivalent circuit of arc ground fault in NES was first established, and the difference between the zero-sequence current between the fault and the sound line was analyzed. Secondly, the Schwarz arc model was improved by introducing dynamic arc length parameters, and the Schwarzarc simulation model was improved by using MATLAB / Simulink, and on this basis, the arc-optic grounding fault model of the pure cable line system in the scenario of exceeding the capacitance current of a medium-voltage distribution network in a city was constructed. Then, the typical fault conditions were set to simulate the arc grounding fault of any line, and the zero sequence current of each line was extracted for coif wavelet decomposition, and it was proposed that when the arc grounding fault occurred in the outlet line, the polarity of the fault line and the nonpower frequency zero sequence current mode maximum of the sound line was opposite. When the arc ground fault occurred on the busbar, the polarity of the non-power frequency zero sequence current mode maximum of all out lines was the same as the arc ground fault selection criterion. Finally, the typical fault conditions were set to verify the effectiveness of the method for selecting wires for NES arc ground faults. The results showed that in different typical fault conditions such as transition resistance, fault point distance, and phase angle at fault time, this method could correctly select the arc light ground fault line.

References:: [1] WANG Z X, ZHANG H J, WANG H Y, et al. Analysis of modeling and fault line selection method for Singlephase Intermittent fault of distribution network[J]. Journal of Physics: Conference Series, 2022, 2355(1): 012047.
[2] DENG F, ZU Y R, MAO Y, et al. A method for distribution network line selection and fault location based on a hierarchical fault monitoring and control system[ J] . International Journal of Electrical Power & Energy Systems, 2020, 123: 106061.
[3] 吕高. 基于零序电流比幅法的故障选线法[ J] . 中北大学学报(自然科学版) , 2014, 35(4) : 473-478.
LYU G. Method of fault line selection based on zero-sequence current comparison of amplitude [ J] . Journal of North University of China ( Natural Science Edition ) , 2014, 35(4) : 473-478.
[4] 郭威. 小电流接地系统五次谐波选线法研究[ D] . 西安: 西安科技大学,2012.
GUO W. Study on fifth harmonic line selection method for small current grounding system[ D] . Xi′an: Xi′an University of Science and Technology,2012.
[5] 袁佳歆, 李响, 张哲维. 基于注入信号的有源配电网单相接地故障选线方法[ J] . 电测与仪表, 2020, 57 (5) :44-49.
YUAN J X, LI X, ZHANG Z W. Research on singlephase grounding fault selection technology for active distribution network based on injected signal[ J] . Electrical Measurement & Instrumentation, 2020, 57(5) :44-49.
[6] 方毅, 薛永端, 宋华茂, 等. 谐振接地系统高阻接地故障暂态能量分析与选线[ J] . 中国电机工程学报, 2018, 38(19) : 5636-5645.
FANG Y, XUE Y D, SONG H M, et al. Transient energy analysis and line selection of high resistance grounding fault in resonant grounding system[ J] . Proceedings of the CSEE, 2018, 38(19) : 5636-5645.
[7] 康忠健, 李丹丹, 刘晓林. 应用非工频暂态分量的配电网故障选线方法[ J] . 电力自动化设备, 2011, 31 (4) :1-6.
KANG Z J, LI D D, LIU X L. Faulty line selection with non-power frequency transient components of distribution network [ J ] . Electric Power Automation Equipment, 2011, 31(4) :1-6.
[8] 殷培峰, 刘石红. 基于谐波与首半波结合的单相接地选线分析与研究[ J] . 自动化与仪器仪表, 2013( 4) : 19-21, 225.
YIN P F, LIU S H. Analysis and research on single- phase grounding line selection based on harmonic and first half wave[ J] . Automation & Instrumentation, 2013(4) : 19-21, 225.
[9] 金涛, 褚福亮. 基于暂态非工频零序电流的含 DG 新型配电网的接地选线方法[ J] . 电工技术学报, 2015, 30(17) :96-105. JIN T, CHU F L. A fault line-selection method in new distribution network with DG based on transient non-power frequency zero sequence current [ J] . Transactions of China Electrotechnical Society, 2015, 30(17) :96-105.
[10] 于永进, 臧宝花. 基于小波变换的小电流接地系统故障选线方法[ J] . 煤炭工程, 2011, 43(1) : 48-50.
YU Y J, ZANG B H. Fault wire line selection method of small current grounding system base on wavelet conversion [ J] . Coal Engineering, 2011, 43(1) : 48-50.
[11] 赵新红, 车伟. 基于小波变换的小电流接地系统电弧故障选线[J]. 电力科学与工程, 2003, 19(4): 22-25. ZHAO X H, CHE W. Arc-grounding fault selection for small current neutral grounding systems based on wavelet analysis[ J] . Power Science and Engineering, 2003, 19 (4) : 22-25.
[12] 赵铁军, 孟菁, 宋岳奇, 等. 组串式光伏系统直流串联电弧故障检测与保护策略[ J] . 电力系统保护与控制, 2020, 48(20) : 74-82.
ZHAO T J, MENG J, SONG Y Q, et al. Series arc detection and protection on the DC side of string-type PVs [ J] . Power System Protection and Control, 2020, 48 (20) : 74-82.
[13] 杨明波, 龙毅, 樊三军, 等. 基于组合 Mayr 和 Cassie 电弧模型的弧光接地故障仿真及分析[ J] . 电测与仪表, 2019, 56(10) :8-13.
YANG M B, LONG Y, FAN S J, et al. Simulation and analysis of arc grounding fault based on combined Mayr and Cassie arc models[ J] . Electrical Measurement & Instrumentation, 2019, 56(10) :8-13.
[14] 马祖涛, 李淑蓉. 小电流接地故障电弧建模分析[ J] . 电力系统及其自动化学报, 2021, 33(9) :103-108.
MA Z T, LI S R. Modeling analysis of arc grounding fault in non-solidly earthed system [ J ] . Proceedings of the CSU-EPSA, 2021, 33(9) :103-108.
[15] 刘艳丽, 郭凤仪, 李磊, 等. 一种串联型故障电弧数学模型[J]. 电工技术学报, 2019, 34(14):2901-2912.
LIU Y L, GUO F Y, LI L, et al. A kind of series fault arc mathematical model[ J] . Transactions of China Electrotechnical Society, 2019, 34(14) :2901-2912.
[16] 蔺华, 王子龙, 郭振华, 等. 考虑弧长动态变化的配电网电弧接地故障建模及辨识[ J] . 电力系统保护与控制, 2022, 50(7) :31-39.
LIN H, WANG Z L, GUO Z H, et al. Modeling and identification of a distribution network arc grounding fault considering arc length dynamic variation[ J] . Power System Protection and Control, 2022, 50(7) :31-39.
[17] 陈奎, 唐轶. 小电流接地系统电弧接地选线方法的研究[ J] . 继电器, 2005, 33(16) :5-9.
CHEN K, TANG Y. Analysis of detecting fault line of arcing grounded fault in isolated neutral system[ J] . Relay, 2005, 33(16) :5-9.
[18] 陈博博, 屈卫锋, 杨宏宇, 等. 小电流接地系统单相接地综合电弧模型与选线方法的研究[ J] . 电力系统保护与控制, 2016, 44(16) :1-7.
CHEN B B, QU W F, YANG H Y, et al. Research on single phase grounding arc model and line selection for neutral ineffectively grounding system[ J] . Power System Protection and Control, 2016, 44(16) :1-7.

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Last Update: 2023-09-04