Analysis of accelerated ageing of non-ceramic insulation equipments

Hernández, Ramiro Parra; Ramirez, I.; Saldivar, Ricardo Hugo Lira; Montoya, Gerardo

doi:10.1049/iet-gtd.2011.0078

Cited by 16 publications

(6 citation statements)

References 20 publications

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“…It is closely related to the change of dielectric properties induced by the deterioration of the GRP rod. The deterioration would lead to the increase of the free volume of the material, which would increase the dielectric loss of the GRP rod [22,23]. By the way, the free volume of the GRP rod determines the moisture absorption [24] in high humidity environment as well.…”

Section: Discussionmentioning

confidence: 99%

Study on heating mechanism of GRP rod in a composite insulator

Yuan

Jiang

et al. 2019

IET Science, Measurement & Technology

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Section: Discussionmentioning

confidence: 99%

Study on heating mechanism of GRP rod in a composite insulator

Yuan

Jiang

et al. 2019

IET Science, Measurement & Technology

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“…The constant failure rate is a simple model for the reliability evaluation of a system. However, many studies on the failures of power system components have revealed that the failure rate is not constant over the time [20–22]. Accordingly, in this paper, time variant failure rate model is used for computing reliability indices in the presence of FCL.…”

Section: Impact Of Fcl On Failure Rates Of Componentsmentioning

confidence: 99%

Reliability assessment of HV substations equipped with fault current limiter considering changes of failure rate of components

Yousefi

Mirzaie

Aminifar

2016

IET Generation, Transmission & Distribution

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“…Their performance was evaluated by the number of leakage current pulses recorded for the 50-120 mA and 120-250 mA ranges in the data acquisition system. This is because the leakage current peaks recorded in these ranges accelerate mainly the ageing of the polymeric components [9]. The total number of leakage current pulses recorded in both leakage current ranges at the end of the test is given in Table II for each insulator.…”

Section: Development Of the Accelerated Ageing Testmentioning

confidence: 99%

“…The contact angle was measured with the sessile drop technique [9], using the digital image analysis.…”

Section: Evaluation Of the Hydrophobic Property On The Test's Insumentioning

confidence: 99%

Performance of hydrophobicity of different polymeric insulators in an accelerated ageing test

Hernández

Vallejo

Montoya

et al. 2012

2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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Hydrophobicity of polymeric insulators is one of the main properties that determine their performance in polluted environments. The hydrophobic property is reduced as the insulator's surface ages due to the electric activity caused by wetting and pollution; however, it is recovered during the resting time in air. The insulators having a high rate of hydrophobicity recovery show better performance.Polymeric insulators of different materials and leakage distances were evaluated in laboratory by using an accelerated ageing method. The hydrophobic property of each insulator was studied by measuring the contact angle on the insulator's surface where the highest electric activity was observed. The measurements were performed before and several times along the ageing test. The performance of the insulators was evaluated by the number and magnitude of the peaks of leakage-current recorded by a home-made system during the entire test. The results show than if the hydrophobic property of the insulator's surface is low, the performance of the insulator under wet and polluted conditions may be strongly affected by its leakage distance.

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Analysis of accelerated ageing of non-ceramic insulation equipments

Cited by 16 publications

References 20 publications

Study on heating mechanism of GRP rod in a composite insulator

Study on heating mechanism of GRP rod in a composite insulator

Reliability assessment of HV substations equipped with fault current limiter considering changes of failure rate of components

Performance of hydrophobicity of different polymeric insulators in an accelerated ageing test

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