Aging Investigations of Polymeric Insulators: Overview and Bibliography

Amin, Mohammed A.; Akbar, M.S.; Khan, M. N. I.

doi:10.1109/mei.2007.386482

Cited by 15 publications

(8 citation statements)

References 128 publications

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“…Corona discharge occurs on the surface of insulators or adjacent insulators when the intensity of the electric field exceeds the breakdown strength of the surrounding air. The products of corona discharge are electromagnetic (EM) radiation, heat, and chemical compounds such as ozone (O 3 ), nitrogen dioxide (NO 2 ), and nitric acid (HNO 3 ) [59]. The combined contribution of chemical and electromagnetic stresses increases the degradation of the HV insulators.…”

Section: Contaminant Source Of Pollutionmentioning

confidence: 99%

Environmental Effects on HV Dielectric Materials and Related Sensing Technologies

et al. 2019

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The increase in recent power failures, with negative impacts on humans and the economy, has been largely attributed to environmental effects and the aging of the power network. These have been accelerated in the last years due to two main factors: an increased load on the power network and material degradation owing to the presence of environmental pollutants. These factors together with specific weather conditions create the incipient conditions for power network degradation. In this paper, a review of the influence of environmental factors on high-voltage (HV) materials and components is provided. Sensing and artificial intelligence (AI) technologies developed to prevent the failure of the material structure and HV components are also reported.

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Section: Contaminant Source Of Pollutionmentioning

confidence: 99%

Environmental Effects on HV Dielectric Materials and Related Sensing Technologies

et al. 2019

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“…El crecimiento de los microorganismos sobre materiales aislantes expuestos a condiciones ambientales puede tomar periodos extensos que van desde algunos meses hasta varios años (Amin y Salman, 2006;Fernando y Gubanski, 2010). Para acelerar el proceso de colonización microbiana, y siguiendo la metodología propuesta por Dernfalk y Gubanski (2004), fue diseñada y construida una cámara para controlar la temperatura, la humedad relativa y la luz en su interior.…”

Section: Cámara De Ambiente Controlado Y Desarrollo Biológicounclassified

“…Estos elementos se encuentran a la intemperie y funcionan bajo diferentes condiciones ambientales que los hacen propensos a múltiples tipos de contaminación (ambiental, industrial y biológica) (Amin y Salman, 2006). En este contexto, diversos estudios han reportado que el crecimiento y desarrollo de microorganismos puede presentarse en aisladores eléctricos de diferentes materiales (vidrio, cerámica, polímero, resina epóxica, etc.)…”

Section: Introductionunclassified

“…De manera complementaria, algunas investigaciones muestran que el desarrollo microbiano sobre aisladores eléctricos se beneficia de las condiciones ambientales propias de zonas tropicales tales como: la intensa radiación solar, los largos periodos de lluvias, la alta humedad relativa y las elevadas temperaturas (Amin y Salman, 2006;Atarijabarzadeh et al, 2011;Fernando y Gubanski, 2010;Meijer et al, 2011;Rojas et al, 2015;Sylvestre et al, 2002). Sin embargo, debido que la contaminación microbiana es un proceso que no está limitado a una región específica del planeta, varía según el tipo de microrganismo, y puede desarrollarse bajo diferentes condiciones ambientales, el impacto que el crecimiento de microorganismos genera sobre el desempeño de los aisladores eléctricos aún no se conoce por completo.…”

Section: Introductionunclassified

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Evaluación del Desempeño de Aisladores Eléctricos de Distribución Cerámicos y Poliméricos bajo Biocontaminación por Hongos

Rojas

Rojas-Cubides

2017

Inf. tecnol.

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* Autor a quien debe ser dirigida la correspondenciaRecibido Ago. 13, 2016; Aceptado Oct. 7, 2016; Versión final Nov. 11, 2016, Publicado Abr. 2017 Resumen Este artículo presenta un estudio sobre el desempeño eléctrico de aisladores cerámicos (ANSI 52-1, ANSI 55-2) y poliméricos (ANSI DS-15) usados en sistemas eléctricos de media tensión (entre 7kV y 35 kV) ante el crecimiento de los hongos Phanerochaete chrysosporium y Penicillium Sp. en su superficie. La contaminación biológica de aisladores eléctricos es una problemática que ha sido reportada en áreas tropicales de Europa, Asia y Oceanía y puede reducir la confiabilidad de los sistemas eléctricos de potencia. La biocontaminación se realizó en Bogotá, Colombia durante 50 días consecutivos (para cada microorganismo) usando una cámara que controla la luz, la humedad y la temperatura. Durante la investigación se realizaron pruebas de tensión de flameo y corrientes de fuga. Después de la biocontaminación se reportaron reducciones en las tensiones de flameo de 21% y 8% para aisladores cerámicos y poliméricos, respectivamente. En todos los casos, las corrientes de fuga aumentaron por encima del 20%. Palabras clave: biocontaminación; aisladores de distribución; tensión de flameo; corriente de fuga; Penicillium Sp.; Phanerochaete chrysosporium Performance Evaluation of Ceramic and Polymeric Electrical Distribution Insulators under Fungus Biocontamination AbstractThis paper presents a study on the electrical performance of ceramic (ANSI 52-1, ANSI 55-2) and polymeric (ANSI DS-15) insulators used in medium voltage electrical systems (between 7kV y 35 kV) when fungi growth of Phanerochaete chrysosporium and Penicillium Sp. on their surface is presented. Biological contamination of electrical insulators is a problem that has been reported in tropical areas in Europe, Asia and Oceania and it may reduce the reliability of electric power systems. The biocontamination was conducted in Bogota, Colombia for 50 consecutive days (for each microorganism) using a chamber that controls light, moisture and temperature. Laboratory tests of flashover voltages and leakage currents were performed. After fungus biocontamination reductions in flashover voltages about 21% and 8% were reported for ceramic and polymeric insulators, respectively. In all cases, the leakage currents increased by 20% or higher.

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“…Composite insulators, being organic in nature are prone to aging during their service life. The polymer materials exhibit flexible and weaker ionic bonds due to which they have a tendency to degrade in external environments [9,10]. Degradation of these materials is caused by the breakdown of polymer macromolecules causinga reduction in molecular weight due to electrical and environmental stresses.…”

Section: Introductionmentioning

confidence: 99%

Global experience of HVDC composite insulators in outdoor and indoor environment

Akbar

Mehmood

2020

Reviews on Advanced Materials Science

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High-voltage direct current (HVDC) transmission is known as green-energy transfer technology and has recently become an attractive alternative of high-voltage alternating current (HVAC) due to its high-power transmission capability and lower power loss. Use of composite insulators on direct current (DC) transmission lines experienced rapid growth in recent years due to their high hydrophobicity and better performance in contaminated environment than conventional ceramic insulators. During their service operation on DC lines, insulators are prone to more accumulation of contaminants due to unidirectional electric field. The contaminants under wet conditions allow leakage current to flow on the insulator surface. Being organic in nature, polymeric insulators have a tendency to age under the combined effects of electrical and environmental stresses. To fully understand the long-term aging performance of DC composite insulators, a detailed survey was considered necessary. Towards that end, this paper critically summarizes worldwide experience of aging performance of composite insulators in the field as well as in laboratory conditions.

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Aging Investigations of Polymeric Insulators: Overview and Bibliography

Cited by 15 publications

References 128 publications

Environmental Effects on HV Dielectric Materials and Related Sensing Technologies

Environmental Effects on HV Dielectric Materials and Related Sensing Technologies

Evaluación del Desempeño de Aisladores Eléctricos de Distribución Cerámicos y Poliméricos bajo Biocontaminación por Hongos

Global experience of HVDC composite insulators in outdoor and indoor environment

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