Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes

Junyi Zhang; Yang Liu; Qing Xiong; Yijie Tang; Zhiwen Wang; Jianghan Li; Pu Wang; Shengchang Ji

doi:10.1007/978-981-95-9043-8_33

Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes

Junyi Zhang
, Yang Liu
, Qing Xiong
, Yijie Tang
, Zhiwen Wang
, Jianghan Li
, Pu Wang
, Shengchang Ji

School of Electrical Engineering

Xi'an Jiaotong University
State Grid Jiangsu Electric Power Co., Ltd.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Single-phase grounding fault line selection in ungrounded or high-resistance grounded systems faces challenges such as weak fault signatures and susceptibility to transition resistance. 220 Hz is selected as the characteristic frequency for current injection and a PSCAD/EMTDC simulation model of a distribution network is established to analyze the amplitude characteristics of characteristic frequency signals on each line. Using the envelopes of the injected characteristic frequency zero-sequence currents, a linear correlation-based line selection method is proposed, and the grounding fault line selection method is designed. Simulations of single-phase grounding faults with varying fault locations and transition resistances were conducted, and the proposed method was applied for fault line selection. The results confirm that this method remains effective to large transition resistance effects and achieves accurate fault line selection.

Original language	English
Title of host publication	The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I
Editors	Qingxin Yang, Dianguo Xu, Xuerong Ye, Qiuyue Nie, Yueshi Guan
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	298-305
Number of pages	8
ISBN (Print)	9789819590421
DOIs	https://doi.org/10.1007/978-981-95-9043-8_33
State	Published - 2026
Event	20th Annual Conference of China Electrotechnical Society, ACCES 2025 - Harbin, China Duration: 19 Sep 2025 → 21 Sep 2025

Publication series

Name	Lecture Notes in Electrical Engineering
Volume	1558 LNEE
ISSN (Print)	1876-1100
ISSN (Electronic)	1876-1119

Conference

Conference	20th Annual Conference of China Electrotechnical Society, ACCES 2025
Country/Territory	China
City	Harbin
Period	19/09/25 → 21/09/25

Keywords

Fault line selection
Hilbert transform (HT)
Pearson correlation
Signal injection
Single-phase grounding fault

Access to Document

10.1007/978-981-95-9043-8_33

Cite this

Zhang, J., Liu, Y., Xiong, Q., Tang, Y., Wang, Z., Li, J., Wang, P., & Ji, S. (2026). Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes. In Q. Yang, D. Xu, X. Ye, Q. Nie, & Y. Guan (Eds.), The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I (pp. 298-305). (Lecture Notes in Electrical Engineering; Vol. 1558 LNEE). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-981-95-9043-8_33

Zhang, Junyi ; Liu, Yang ; Xiong, Qing et al. / Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes. The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I. editor / Qingxin Yang ; Dianguo Xu ; Xuerong Ye ; Qiuyue Nie ; Yueshi Guan. Springer Science and Business Media Deutschland GmbH, 2026. pp. 298-305 (Lecture Notes in Electrical Engineering).

@inproceedings{55d10f2cb352456ea745fb3ba9bd1018,

title = "Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes",

abstract = "Single-phase grounding fault line selection in ungrounded or high-resistance grounded systems faces challenges such as weak fault signatures and susceptibility to transition resistance. 220 Hz is selected as the characteristic frequency for current injection and a PSCAD/EMTDC simulation model of a distribution network is established to analyze the amplitude characteristics of characteristic frequency signals on each line. Using the envelopes of the injected characteristic frequency zero-sequence currents, a linear correlation-based line selection method is proposed, and the grounding fault line selection method is designed. Simulations of single-phase grounding faults with varying fault locations and transition resistances were conducted, and the proposed method was applied for fault line selection. The results confirm that this method remains effective to large transition resistance effects and achieves accurate fault line selection.",

keywords = "Fault line selection, Hilbert transform (HT), Pearson correlation, Signal injection, Single-phase grounding fault",

author = "Junyi Zhang and Yang Liu and Qing Xiong and Yijie Tang and Zhiwen Wang and Jianghan Li and Pu Wang and Shengchang Ji",

note = "Publisher Copyright: {\textcopyright} Beijing Paike Culture Commu. Co., Ltd. 2026.; 20th Annual Conference of China Electrotechnical Society, ACCES 2025 ; Conference date: 19-09-2025 Through 21-09-2025",

year = "2026",

doi = "10.1007/978-981-95-9043-8\_33",

language = "英语",

isbn = "9789819590421",

series = "Lecture Notes in Electrical Engineering",

publisher = "Springer Science and Business Media Deutschland GmbH",

pages = "298--305",

editor = "Qingxin Yang and Dianguo Xu and Xuerong Ye and Qiuyue Nie and Yueshi Guan",

booktitle = "The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I",

}

Zhang, J, Liu, Y, Xiong, Q, Tang, Y, Wang, Z, Li, J, Wang, P & Ji, S 2026, Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes. in Q Yang, D Xu, X Ye, Q Nie & Y Guan (eds), The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I. Lecture Notes in Electrical Engineering, vol. 1558 LNEE, Springer Science and Business Media Deutschland GmbH, pp. 298-305, 20th Annual Conference of China Electrotechnical Society, ACCES 2025, Harbin, China, 19/09/25. https://doi.org/10.1007/978-981-95-9043-8_33

Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes. / Zhang, Junyi; Liu, Yang; Xiong, Qing et al.
The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I. ed. / Qingxin Yang; Dianguo Xu; Xuerong Ye; Qiuyue Nie; Yueshi Guan. Springer Science and Business Media Deutschland GmbH, 2026. p. 298-305 (Lecture Notes in Electrical Engineering; Vol. 1558 LNEE).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes

AU - Zhang, Junyi

AU - Liu, Yang

AU - Xiong, Qing

AU - Tang, Yijie

AU - Wang, Zhiwen

AU - Li, Jianghan

AU - Wang, Pu

AU - Ji, Shengchang

N1 - Publisher Copyright: © Beijing Paike Culture Commu. Co., Ltd. 2026.

PY - 2026

Y1 - 2026

N2 - Single-phase grounding fault line selection in ungrounded or high-resistance grounded systems faces challenges such as weak fault signatures and susceptibility to transition resistance. 220 Hz is selected as the characteristic frequency for current injection and a PSCAD/EMTDC simulation model of a distribution network is established to analyze the amplitude characteristics of characteristic frequency signals on each line. Using the envelopes of the injected characteristic frequency zero-sequence currents, a linear correlation-based line selection method is proposed, and the grounding fault line selection method is designed. Simulations of single-phase grounding faults with varying fault locations and transition resistances were conducted, and the proposed method was applied for fault line selection. The results confirm that this method remains effective to large transition resistance effects and achieves accurate fault line selection.

AB - Single-phase grounding fault line selection in ungrounded or high-resistance grounded systems faces challenges such as weak fault signatures and susceptibility to transition resistance. 220 Hz is selected as the characteristic frequency for current injection and a PSCAD/EMTDC simulation model of a distribution network is established to analyze the amplitude characteristics of characteristic frequency signals on each line. Using the envelopes of the injected characteristic frequency zero-sequence currents, a linear correlation-based line selection method is proposed, and the grounding fault line selection method is designed. Simulations of single-phase grounding faults with varying fault locations and transition resistances were conducted, and the proposed method was applied for fault line selection. The results confirm that this method remains effective to large transition resistance effects and achieves accurate fault line selection.

KW - Fault line selection

KW - Hilbert transform (HT)

KW - Pearson correlation

KW - Signal injection

KW - Single-phase grounding fault

UR - https://www.scopus.com/pages/publications/105040542725

U2 - 10.1007/978-981-95-9043-8_33

DO - 10.1007/978-981-95-9043-8_33

M3 - 会议稿件

AN - SCOPUS:105040542725

SN - 9789819590421

T3 - Lecture Notes in Electrical Engineering

SP - 298

EP - 305

BT - The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I

A2 - Yang, Qingxin

A2 - Xu, Dianguo

A2 - Ye, Xuerong

A2 - Nie, Qiuyue

A2 - Guan, Yueshi

PB - Springer Science and Business Media Deutschland GmbH

T2 - 20th Annual Conference of China Electrotechnical Society, ACCES 2025

Y2 - 19 September 2025 through 21 September 2025

ER -

Zhang J, Liu Y, Xiong Q, Tang Y, Wang Z, Li J et al. Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes. In Yang Q, Xu D, Ye X, Nie Q, Guan Y, editors, The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume I. Springer Science and Business Media Deutschland GmbH. 2026. p. 298-305. (Lecture Notes in Electrical Engineering). doi: 10.1007/978-981-95-9043-8_33

Grounding Fault Line Selection Method for Distribution Networks Based on Linear Correlation of Injected Characteristic Frequency Current Envelopes

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