Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation

Abstract Zero‐sequence currents in high‐voltage power systems during normal operation can have a significant influence on nearby infrastructure. It is therefore necessary to gain insight into typical levels of zero‐sequence currents in a variety of operational situations. Measurements can provide th...

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Autores principales:	Sjoerd Nauta, Ramiro Serra
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Distribution or transmission of electric power TK3001-3521 Production of electric energy or power. Powerplants. Central stations TK1001-1841
Acceso en línea:	https://doaj.org/article/21109b3329604ea583afcd8362ebd9cb
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spelling	oai:doaj.org-article:21109b3329604ea583afcd8362ebd9cb2021-11-16T15:47:59ZZero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation1751-86951751-868710.1049/gtd2.12254https://doaj.org/article/21109b3329604ea583afcd8362ebd9cb2021-12-01T00:00:00Zhttps://doi.org/10.1049/gtd2.12254https://doaj.org/toc/1751-8687https://doaj.org/toc/1751-8695Abstract Zero‐sequence currents in high‐voltage power systems during normal operation can have a significant influence on nearby infrastructure. It is therefore necessary to gain insight into typical levels of zero‐sequence currents in a variety of operational situations. Measurements can provide this insight. When performing measurements, one needs to know the uncertainty associated with the measurement to draw accurate conclusions. The measurement uncertainty associated with three different practical strategies to measure zero‐sequence currents during normal operation are studied: a direct and indirect measurement strategy using current clamps and oscilloscopes and a measurement strategy using phasor measurement units (PMU). Measurement uncertainty is studied using two methods: by analytical expressions and by Monte Carlo simulations. Both methods give consistent outcomes for the measurement uncertainty and show the same tendencies of the zero‐sequence current measurement uncertainty as a function of the positive‐sequence current. This paper studies measurement strategies with error sources based on realistic measurement devices that could be used in practice. The following outcomes were found: in the direct strategy, the primary current transformers are the largest uncertainty sources; in the indirect strategy, the current clamps are the largest uncertainty sources; in the PMU strategy, the PMU total vector error is the largest uncertainty source.Sjoerd NautaRamiro SerraWileyarticleDistribution or transmission of electric powerTK3001-3521Production of electric energy or power. Powerplants. Central stationsTK1001-1841ENIET Generation, Transmission & Distribution, Vol 15, Iss 24, Pp 3450-3458 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Distribution or transmission of electric power TK3001-3521 Production of electric energy or power. Powerplants. Central stations TK1001-1841
spellingShingle	Distribution or transmission of electric power TK3001-3521 Production of electric energy or power. Powerplants. Central stations TK1001-1841 Sjoerd Nauta Ramiro Serra Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation
description	Abstract Zero‐sequence currents in high‐voltage power systems during normal operation can have a significant influence on nearby infrastructure. It is therefore necessary to gain insight into typical levels of zero‐sequence currents in a variety of operational situations. Measurements can provide this insight. When performing measurements, one needs to know the uncertainty associated with the measurement to draw accurate conclusions. The measurement uncertainty associated with three different practical strategies to measure zero‐sequence currents during normal operation are studied: a direct and indirect measurement strategy using current clamps and oscilloscopes and a measurement strategy using phasor measurement units (PMU). Measurement uncertainty is studied using two methods: by analytical expressions and by Monte Carlo simulations. Both methods give consistent outcomes for the measurement uncertainty and show the same tendencies of the zero‐sequence current measurement uncertainty as a function of the positive‐sequence current. This paper studies measurement strategies with error sources based on realistic measurement devices that could be used in practice. The following outcomes were found: in the direct strategy, the primary current transformers are the largest uncertainty sources; in the indirect strategy, the current clamps are the largest uncertainty sources; in the PMU strategy, the PMU total vector error is the largest uncertainty source.
format	article
author	Sjoerd Nauta Ramiro Serra
author_facet	Sjoerd Nauta Ramiro Serra
author_sort	Sjoerd Nauta
title	Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation
title_short	Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation
title_full	Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation
title_fullStr	Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation
title_full_unstemmed	Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation
title_sort	zero‐sequence current measurement uncertainty in three‐phase power systems during normal operation
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/21109b3329604ea583afcd8362ebd9cb
work_keys_str_mv	AT sjoerdnauta zerosequencecurrentmeasurementuncertaintyinthreephasepowersystemsduringnormaloperation AT ramiroserra zerosequencecurrentmeasurementuncertaintyinthreephasepowersystemsduringnormaloperation
_version_	1718426288321986560

Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation

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