Research of Single-Phase Grounding Fault Location Based on Steady-State Abrupt Change of Phase Current

doi:10.16628/j.cnki.2095-8188.2022.11.009

Abstract

Abstract:

Most of the single-phase grounding fault location of the distribution network is realized by detecting and calculating the zero-sequence current,and the corresponding hardware equipment needs to be added.It is difficult to reconstruct in the area where the distribution automation has been realized.A small current single-phase grounding fault location method based on the analysis of three-phase phase current steady-state abrupt change is proposed.According to the absolute abrupt change of the three-phase current before and after the occurrence of the ground fault,the criterion is set to realize the location of the fault section.The MATLAB simulation results and engineering applications verify the feasibility of the method.The proposed method can be located at the remote side of the main station,which is simple in calculation and reduces the complexity of the grounding location of the distribution network.

Key words: distribution network, steady-state current, single-phase grounding, segment location, distribution automation

CLC Number:

TM76

ZHOU Wanpeng, GUO Yanhong, LUO Jialiang, ZHANG Limin, LI Biao, XIAO Shaohua. Research of Single-Phase Grounding Fault Location Based on Steady-State Abrupt Change of Phase Current[J]. LOW VOLTAGE APPARATUS, 2022, 0(11): 54-58.

Figures/Tables 7

References 10

[1]	张颖, 许欣. 基于蚁群退火算法的配电网故障定位研究[J]. 电器与能效管理技术, 2021(9):85-90,99.
[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.
[3]	张启亮, 刘倩影. 10 kV电缆网小电流接地系统故障定位方法研究[J]. 黑龙江电力, 2018, 40(4):323-326.
[4]	宋国兵, 李广, 于叶云, 等. 基于相电流突变量的配电网单相接地故障区段定位[J]. 电力系统自动化, 2011, 35(21):84-90.
[5]	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.
[6]	甘小勇, 汪远娇, 王璐, 等. 基于暂态行波分析的配电线路故障精确定位算法研究[J]. 电工技术, 2021(1):44-45,48.
[7]	杨福, 臧璇, 瞿寒冰, 等. 基于配电自动化的配网单相接地故障定位与自愈[J]. 电力科学与技术学报, 2020, 35(4):176-180.
[8]	许光, 刘漫雨, 王兴念, 等. 基于多信息融合的自适应单相接地故障在线定位研究与应用[J]. 电测与仪表, 2019, 56(12):64-72.
[9]	吐努合·阿米提, 崔双喜, 王维庆, 等. 基于MATLAB的电网接地故障建模与仿真分析[J]. 电器与能效管理技术, 2019(3):12-17.
[10]	文忠进, 肖小兵, 刘安茳, 等. 基于故障序特性分析的配电网单相接地故障研究[J]. 电器与能效管理技术, 2020(8):62-67.

区段	判别结果				定位结果
区段	①	②	③	④	定位结果
①	+	-	-	-	①
②	-	+	-	-	②
③	-	-	+	-	③
④	-	-	+	+	④

位置	Δ'_AB	Δ_AB	Δ'_AC	Δ_AC	Δ_A	Δ_B	Δ_C	Δ₁	Δ₂	故障标记
①	23.94	27.91	32.26	34.28	36.12	32.15	34.1	2.99	3.00	-
②	0.01	0.01	0.02	0.04	0.03	0.01	0.01	0.01	0.02	-
③	0.01	16.22	0.02	16.24	16.13	0.08	0.13	16.22	16.12	+
④	0.01	0.26	0.02	0.39	0.43	0.16	0.06	0.27	0.32	-

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