Impact of residual harmonic current on operation of residual current devices

Y. Xiang; V. Cuk; J.F.G. Cobben

doi:10.1109/EEEIC.2011.5874683

Impact of residual harmonic current on operation of residual current devices

Y. Xiang, V. Cuk, J.F.G. Cobben

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

12 Citations (Scopus)

Abstract

Residual current devices (RCDs) are most commonly used as a part of the protection system in low voltage installations. RCDs are supposed to disconnect the supply whenever the imbalance current between the live conductor(s) and the neutral conductor, i.e. residual current, exceeds the predetermined value. Such an imbalance is sometimes caused by current leakage through the body of a person who is grounded and accidentally touching the energized part of the circuit, which could result in a lethal shock. However, harmonic components in ground fault current may influence the tripping sensitivity of RCDs, and the protection against electrical shock may not be effective. In the paper, results of theoretical analysis and experiments are presented. Several mechanisms which could influence the tripping sensitivity of RCDs are validated, and their dominant conditions are identified.

Original language	English
Title of host publication	Proceedings of the 10th International Conference on Environment and Electrical Engineering (EEEIC 2011), 8-11 May 2011, Rome, Italy
Place of Publication	Piscataway
Publisher	Institute of Electrical and Electronics Engineers
Pages	1-4
ISBN (Print)	978-1-4244-8779-0
DOIs	https://doi.org/10.1109/EEEIC.2011.5874683
Publication status	Published - 2011
Event	10th International Conference on Environment and Electrical Engineering (EEEIC 2011) - Rome, Italy Duration: 8 May 2011 → 11 May 2011 Conference number: 10

Conference

Conference	10th International Conference on Environment and Electrical Engineering (EEEIC 2011)
Abbreviated title	EEEIC 2011
Country	Italy
City	Rome
Period	8/05/11 → 11/05/11

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title = "Impact of residual harmonic current on operation of residual current devices",

abstract = "Residual current devices (RCDs) are most commonly used as a part of the protection system in low voltage installations. RCDs are supposed to disconnect the supply whenever the imbalance current between the live conductor(s) and the neutral conductor, i.e. residual current, exceeds the predetermined value. Such an imbalance is sometimes caused by current leakage through the body of a person who is grounded and accidentally touching the energized part of the circuit, which could result in a lethal shock. However, harmonic components in ground fault current may influence the tripping sensitivity of RCDs, and the protection against electrical shock may not be effective. In the paper, results of theoretical analysis and experiments are presented. Several mechanisms which could influence the tripping sensitivity of RCDs are validated, and their dominant conditions are identified.",

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Xiang, Y , Cuk, V & Cobben, JFG 2011, Impact of residual harmonic current on operation of residual current devices. in Proceedings of the 10th International Conference on Environment and Electrical Engineering (EEEIC 2011), 8-11 May 2011, Rome, Italy. Institute of Electrical and Electronics Engineers, Piscataway, pp. 1-4, 10th International Conference on Environment and Electrical Engineering (EEEIC 2011), Rome, Italy, 8/05/11. https://doi.org/10.1109/EEEIC.2011.5874683

Impact of residual harmonic current on operation of residual current devices. / Xiang, Y.; Cuk, V.; Cobben, J.F.G.

Proceedings of the 10th International Conference on Environment and Electrical Engineering (EEEIC 2011), 8-11 May 2011, Rome, Italy. Piscataway : Institute of Electrical and Electronics Engineers, 2011. p. 1-4.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

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AB - Residual current devices (RCDs) are most commonly used as a part of the protection system in low voltage installations. RCDs are supposed to disconnect the supply whenever the imbalance current between the live conductor(s) and the neutral conductor, i.e. residual current, exceeds the predetermined value. Such an imbalance is sometimes caused by current leakage through the body of a person who is grounded and accidentally touching the energized part of the circuit, which could result in a lethal shock. However, harmonic components in ground fault current may influence the tripping sensitivity of RCDs, and the protection against electrical shock may not be effective. In the paper, results of theoretical analysis and experiments are presented. Several mechanisms which could influence the tripping sensitivity of RCDs are validated, and their dominant conditions are identified.

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