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Comparison of maintenance scheme effects on power transformer reliability performance

Acceso Abierto

ID Minciencias: ART-0001343185-20

Ranking: ART-ART_B

Idioma: Inglés

Publicado: 18/11/2015

APC (est): No disponible

Abstract:

Power transformer failures have a significant impact on electrical systems reliability, as they compromise the electricity delivery. Failures impact the operational cost of electric utilities as they endanger the accomplishment of power commitments. Power transformer failure rate can be modeled from its health condition, which is determined from different condition parameters. This paper is aimed to compare different maintenance schemes that allow the asset to be available the longest possible time. The power transformer operation is represented considering actual electric load profiles and temperature. Electrical and thermal transformer parameters are taken from manufacturer tests and technical standards. An electrical-thermal model is employed to estimate the life span reduction and temperature changes. From life span and loading, the health condition is determined, so as the effects of different maintenance schemes. The failure rates are calculated for unmaintained conditions and different maintained schemes, allowing to determine their effects on transformer reliability. Optimal maintenance schemes are determined and the expected benefits in failure rate reduction, asset reliability and life span extension are presented. As a result, it was found that certain time-based maintenance schemes provide better transformer reliability performance in comparison to condition based schemes, allowing to reduce the interruptions and extending the life of the transformer.<br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" />

Tópico:

Power System Reliability and Maintenance

Citaciones:

Citaciones por año:

No hay datos de citaciones disponibles

Altmétricas:

Información de la Fuente:

FuenteIngeniería e Investigación	Cuartil año de publicaciónNo disponible	Volumen35
Issue2Sup	Páginas73 - 81	pISSN0120-5609
ISSNNo disponible	Perfil OpenAlexhttps://openalex.org/S1036471906

Enlaces e Identificadores:

Scienti ID	0001343185-20	Minciencias ID	ART-0001343185-20	Openalex URL	https://openalex.org/W4244860710
Scholar citations URL	https://scholar.google.com/scholar?cites=12826644335314932587&as_sdt=5,33&sciodt=0,33&hl=en	Open_access URL	https://doi.org/10.15446/ing.investig.v35n2sup.53435	Dspace URL	https://repositorio.unal.edu.co/handle/unal/67652
Doi URL	https://doi.org/10.15446/ing.investig.v35n2sup.53435	Scholar URL	https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=info%3AaxO5ghBlAbIJ%3Ascholar.google.com&btnG=	Oaipmh URL	http://repositorio.unal.edu.co/oai/request?verb=GetRecord&metadataPrefix=dim&identifier=oai:repositorio.unal.edu.co:unal/67652
Uri URL	https://repositorio.unal.edu.co/handle/unal/67652	Pdf URL	http://www.scielo.org.co/scielo.php?pid=S0120-56092015000400011&script=sci_arttext

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