Research on Fault Location of Distribution Network Based on Edge Computing and Wavelet Neural Network

doi:10.16628/j.cnki.2095-8188.2022.08.005

Abstract

Abstract:

With the rapid development of the power internet of things,in order to further improve the accuracy of fault location in the distribution network,a method of distribution network fault location based on the edge computing and wavelet neural network is proposed.Firstly,the terminal is redivided into a collection terminal with calculation function and a collection terminal for fault information collection.Then,the fault current signal is subjected to wavelet transform and wavelet packet frequency band decomposition to obtain the fault feature vector.Finally,through the neural network training,the output diagnostic result the is obtained.The simulation results show that this method can reduce the time of fault diagnosis and improve the accuracy of fault location.

Key words: distribution network, fault location, edge computing, wavelet neural network

CLC Number:

TM73

XU Xin, ZHANG Ying. Research on Fault Location of Distribution Network Based on Edge Computing and Wavelet Neural Network[J]. LOW VOLTAGE APPARATUS, 2022, 0(8): 33-38.

Figures/Tables 12

References 14

[1]	周冬玥, 胡福年, 陈军. 基于复杂网络的电力系统鲁棒性分析[J]. 电力系统保护与控制, 2021, 49(1):72-80.
[2]	王晓卫, 田书, 李玉东, 等. 基于S变换特征频率序列的小电流接地系统故障区段定位方法[J]. 电力系统保护与控制, 2012, 40(14):109-115.
[3]	张卫红, 陈小龙, 万顺, 等. 基于边缘计算的分布式配电故障处理系统[J]. 供用电, 2019, 36(9):28-33,58.
[4]	刘健, 张志华, 张小庆. 配电网故障处理若干问题探讨[J]. 电力系统保护与控制, 2017, 45(20):1-6.
[5]	郭运城, 韦钢, 国宗, 等. 基于熵权TOPSIS和MAS的配电网故障动态恢复[J]. 现代电力, 2014, 31(6):46-52.
[6]	唐华, 王玮, 王英男, 等. 一种配电网故障区段定位的改进矩阵算法[J]. 科学技术与工程, 2014, 14(11):196-199.
[7]	赵峰, 尹德昌. 小波包与改进BP神经网络的配电网故障选线[J]. 自动化仪表, 2013, 34(9):4-8.
[8]	王鹤, 李石强, 于华楠, 等. 基于分布式压缩感知和边缘计算的配电网电能质量数据压缩存储方法[J]. 电工技术学报, 2020, 35(21):4553-4564.
[9]	邓丰, 李鹏, 曾祥君, 等. 基于D-PMU的配电网故障选线和定位方法[J]. 电力系统自动化, 2020, 44(19):160-167.
[10]	李浩成. 通信技术下配电线路故障自适应定位中的应用研究[J]. 自动化与仪器仪表, 2018(12):176-179.
[11]	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.
[12]	张磊琪, 陈晓玲, 张钟毓, 等. 一种配电网故障恢复智能决策算法[J]. 现代电力, 2016, 33(1):69-73.
[13]	施伟斌. 基于10 kV小电阻接地系统的架空线路接地故障指示器[J]. 低压电器, 2007(13):34-35,47.
[14]	姚程, 刘新东, 郑冰. 含有分布式发电的配电网故障定位新算法[J]. 现代电力, 2010, 27(3):54-56.

线路类型	相序	电阻/ (Ω·km^-1)	电感/ (mH·km^-1)	电容/ (μF·km^-1)
电缆线路	正序	0.256 0	0.245 0	0.167 3
电缆线路	零序	2.340 0	1.023 0	0.161 2
架空线路	正序	0.157 3	1.133 7	0.011 7
架空线路	零序	0.316 4	4.726 4	0.006 8

线路	d/km	R/Ω	φ/(°)	Y/km	λ/%
L1	12.2	20	0	12.587	0.032
		20	45	12.579	0.031
		100	90	11.896	-0.025
L2	7.8	20	0	8.167	0.047
		100	45	7.297	-0.064
		100	90	7.297	-0.064
L3	4.0	20	0	4.232	0.058
		20	45	4.234	0.059
		100	90	3.788	0.053
L4	10.5	20	0	10.742	0.023
		100	45	10.889	0.037
		100	90	10.886	0.036

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