dor_id: 45845

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856.4.0.u: https://jart.icat.unam.mx/index.php/jart/article/view/43/42

100.1.#.a: Ramírez Niño, José; Haro Hernández, Carlos; Rodriguez Rodriguez, Joaquín Héctor; Mijarez, Rito

524.#.#.a: Ramírez Niño, José, et al. (2016). Core saturation effects of geomagnetic induced currents in power transformers. Journal of Applied Research and Technology; Vol. 14 Núm. 2. Recuperado de https://repositorio.unam.mx/contenidos/45845

245.1.0.a: Core saturation effects of geomagnetic induced currents in power transformers

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias Aplicadas y Tecnología, UNAM

264.#.0.c: 2016

264.#.1.c: 2016-04-01

653.#.#.a: Geomagnetic currents; Scale model; Asymmetric non-linear behavior

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico gabriel.ascanio@icat.unam.mx

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001.#.#.#: 074.oai:ojs2.localhost:article/43

041.#.7.h: spa

520.3.#.a: Saturation of the magnetic core of transformers in a power system is an important effect that can be attributed to solar Geomagnetic InducedCurrents (GICs). This saturation can conduce to voltage-control problems, generating harmonic currents, and heating of the transformer internalcomponents, leading to gas relay alarm/operation and possible damage. This paper presents an analog physical reduced scale model of GICs inpower transformers. The instrumentation employed to carry out this study consists of a single-phase reduced scale transformer, a controllablecurrent source, a resistive load and a data acquisition system. The work establishes not only that it is possible to model the behavior of magneticvariables and to extrapolate the results to large full size power transformers, but also provides insight into GICs generation and their effects onpower transformers. Obtained results are related to the non-linear behavior of GICs due to asymmetric saturation of the magnetic core in the powertransformer, where computational model simulation is not able to give acceptable outcomes. Results are discussed for several GICs magnitudes,which include voltage, current, harmonics waveforms, magnetic core point of operation, the behavior of the stray flow, instantaneous power andcore temperature.

773.1.#.t: Journal of Applied Research and Technology; Vol. 14 Núm. 2

773.1.#.o: https://jart.icat.unam.mx/index.php/jart

022.#.#.a: ISSN electrónico: 2448-6736; ISSN: 1665-6423

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264.#.1.b: Instituto de Ciencias Aplicadas y Tecnología, UNAM

doi: https://doi.org/10.22201/icat.16656423.2016.14.2.43

harvesting_date: 2023-11-08 13:10:00.0

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Artículo

Core saturation effects of geomagnetic induced currents in power transformers

Ramírez Niño, José; Haro Hernández, Carlos; Rodriguez Rodriguez, Joaquín Héctor; Mijarez, Rito

Instituto de Ciencias Aplicadas y Tecnología, UNAM, publicado en Journal of Applied Research and Technology, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

Ramírez Niño, José, et al. (2016). Core saturation effects of geomagnetic induced currents in power transformers. Journal of Applied Research and Technology; Vol. 14 Núm. 2. Recuperado de https://repositorio.unam.mx/contenidos/45845

Descripción del recurso

Autor(es)
Ramírez Niño, José; Haro Hernández, Carlos; Rodriguez Rodriguez, Joaquín Héctor; Mijarez, Rito
Tipo
Artículo de Investigación
Área del conocimiento
Ingenierías
Título
Core saturation effects of geomagnetic induced currents in power transformers
Fecha
2016-04-01
Resumen
Saturation of the magnetic core of transformers in a power system is an important effect that can be attributed to solar Geomagnetic InducedCurrents (GICs). This saturation can conduce to voltage-control problems, generating harmonic currents, and heating of the transformer internalcomponents, leading to gas relay alarm/operation and possible damage. This paper presents an analog physical reduced scale model of GICs inpower transformers. The instrumentation employed to carry out this study consists of a single-phase reduced scale transformer, a controllablecurrent source, a resistive load and a data acquisition system. The work establishes not only that it is possible to model the behavior of magneticvariables and to extrapolate the results to large full size power transformers, but also provides insight into GICs generation and their effects onpower transformers. Obtained results are related to the non-linear behavior of GICs due to asymmetric saturation of the magnetic core in the powertransformer, where computational model simulation is not able to give acceptable outcomes. Results are discussed for several GICs magnitudes,which include voltage, current, harmonics waveforms, magnetic core point of operation, the behavior of the stray flow, instantaneous power andcore temperature.
Tema
Geomagnetic currents; Scale model; Asymmetric non-linear behavior
Idioma
spa
ISSN
ISSN electrónico: 2448-6736; ISSN: 1665-6423

Enlaces