Wavelet analysis based protection for high impedance ground fault in supply systems

Xiangjun Zeng; K. K. Li; Wai Lok Chan

doi:10.1109/ICPST.2002.1053548

Wavelet analysis based protection for high impedance ground fault in supply systems

Xiangjun Zeng, K. K. Li, Wai Lok Chan

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

4 Citations (Scopus)

Abstract

Many high impedance ground faults (HIGF) that happen in a low voltage (LV) system often cause loss of customer supply, fire and human safety hazards. Traditional ground fault protection is provided by residual current circuit breaker (RCCB). The RCCB often causes nuisance tripping and it is difficult to detect HIGF. Wavelet analysis based HIGF protection is developed in the paper. The wavelet transform is applied to filter out some frequency bands of harmonics from residual current and line current. The root mean square (RMS) value of harmonics are calculated using their wavelet coefficients directly. HIGF is identified from disturbance by the RMS difference between the residual current and the line current. The digital protection scheme is designed. EMTP simulation results show that the new protection is able to detect HIGF and prevent electric shock with high sensitivity and robustness.

Original language	English
Title of host publication	PowerCon 2002 - 2002 International Conference on Power System Technology, Proceedings
Publisher	IEEE
Pages	275-279
Number of pages	5
Volume	1
ISBN (Electronic)	0780374592, 9780780374591
DOIs	https://doi.org/10.1109/ICPST.2002.1053548
Publication status	Published - 1 Jan 2002
Event	International Conference on Power System Technology, PowerCon 2002 - Kunming, China Duration: 13 Oct 2002 → 17 Oct 2002

Conference

Conference	International Conference on Power System Technology, PowerCon 2002
Country/Territory	China
City	Kunming
Period	13/10/02 → 17/10/02

Keywords

Ground fault Protection
High impedance fault
Low voltage systems
Wavelet analysis

ASJC Scopus subject areas

Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1109/ICPST.2002.1053548

Cite this

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title = "Wavelet analysis based protection for high impedance ground fault in supply systems",

abstract = "Many high impedance ground faults (HIGF) that happen in a low voltage (LV) system often cause loss of customer supply, fire and human safety hazards. Traditional ground fault protection is provided by residual current circuit breaker (RCCB). The RCCB often causes nuisance tripping and it is difficult to detect HIGF. Wavelet analysis based HIGF protection is developed in the paper. The wavelet transform is applied to filter out some frequency bands of harmonics from residual current and line current. The root mean square (RMS) value of harmonics are calculated using their wavelet coefficients directly. HIGF is identified from disturbance by the RMS difference between the residual current and the line current. The digital protection scheme is designed. EMTP simulation results show that the new protection is able to detect HIGF and prevent electric shock with high sensitivity and robustness.",

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author = "Xiangjun Zeng and Li, {K. K.} and Chan, {Wai Lok}",

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Zeng, X, Li, KK & Chan, WL 2002, Wavelet analysis based protection for high impedance ground fault in supply systems. in PowerCon 2002 - 2002 International Conference on Power System Technology, Proceedings. vol. 1, 1053548, IEEE, pp. 275-279, International Conference on Power System Technology, PowerCon 2002, Kunming, China, 13/10/02. https://doi.org/10.1109/ICPST.2002.1053548

Wavelet analysis based protection for high impedance ground fault in supply systems. / Zeng, Xiangjun; Li, K. K.; Chan, Wai Lok.
PowerCon 2002 - 2002 International Conference on Power System Technology, Proceedings. Vol. 1 IEEE, 2002. p. 275-279 1053548.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - Wavelet analysis based protection for high impedance ground fault in supply systems

AU - Zeng, Xiangjun

AU - Li, K. K.

AU - Chan, Wai Lok

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Many high impedance ground faults (HIGF) that happen in a low voltage (LV) system often cause loss of customer supply, fire and human safety hazards. Traditional ground fault protection is provided by residual current circuit breaker (RCCB). The RCCB often causes nuisance tripping and it is difficult to detect HIGF. Wavelet analysis based HIGF protection is developed in the paper. The wavelet transform is applied to filter out some frequency bands of harmonics from residual current and line current. The root mean square (RMS) value of harmonics are calculated using their wavelet coefficients directly. HIGF is identified from disturbance by the RMS difference between the residual current and the line current. The digital protection scheme is designed. EMTP simulation results show that the new protection is able to detect HIGF and prevent electric shock with high sensitivity and robustness.

AB - Many high impedance ground faults (HIGF) that happen in a low voltage (LV) system often cause loss of customer supply, fire and human safety hazards. Traditional ground fault protection is provided by residual current circuit breaker (RCCB). The RCCB often causes nuisance tripping and it is difficult to detect HIGF. Wavelet analysis based HIGF protection is developed in the paper. The wavelet transform is applied to filter out some frequency bands of harmonics from residual current and line current. The root mean square (RMS) value of harmonics are calculated using their wavelet coefficients directly. HIGF is identified from disturbance by the RMS difference between the residual current and the line current. The digital protection scheme is designed. EMTP simulation results show that the new protection is able to detect HIGF and prevent electric shock with high sensitivity and robustness.

KW - Ground fault Protection

KW - High impedance fault

KW - Low voltage systems

KW - Wavelet analysis

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PB - IEEE

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Wavelet analysis based protection for high impedance ground fault in supply systems

Abstract

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

More information

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