Life expectancy of high voltage bushings based on incipient failure detections: a practical approach

Enciso, Luciano; Martínez, José Luis; Arce, Pablo José Lizana

doi:10.1109/eic47619.2020.9158690

Cited by 2 publications

(1 citation statement)

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“…Despite the fact that the dielectric response methods are becoming more and more reliable, the interpretation of the obtained results is still difficult [9,[11][12][13][14]. This is mainly due to the fact that the bushing works as a parallel system of two elements located in different environments, and the measured dielectric response is their resultant.…”

Section: Introductionmentioning

confidence: 99%

Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

Walczak

Gielniak

2021

Energies

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HV bushings are an important part of the equipment of large power transformers, responsible for their many serious (including catastrophic) failures. Their proper exploitation needs to apply correct and reliable diagnostics, e.g., the use of dielectric response methods, that take into account their specific construction and working conditions. In this article, based on laboratory tests carried out on a real bushing, it has been shown that the significant temperature distribution within its core significantly affects the shape of the dielectric response of its insulation; therefore, the approach to its modeling should be changed. Hence, a new method for interpreting the results, using the so-called the 2XY model, is proposed. Subsequently, based on the measurements made on the insulators in operation, a new modeling method was verified. In conclusion, it can be stated that the 2XY model significantly improves the reliability of the dielectric response analysis, which should be confirmed in the future by tests on withdrawn and revised insulators.

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Section: Introductionmentioning

confidence: 99%

Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

Walczak

Gielniak

2021

Energies

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Review of Detection Methods for Typical Faults in Transformer Bushings^*

Lin,

Wu,

Liu

et al. 2024

IEEE Electr. Insul. Mag.

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Life expectancy of high voltage bushings based on incipient failure detections: a practical approach

Cited by 2 publications

References 6 publications

Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

Review of Detection Methods for Typical Faults in Transformer Bushings^*

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Life expectancy of high voltage bushings based on incipient failure detections: a practical approach

Cited by 2 publications

References 6 publications

Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

Review of Detection Methods for Typical Faults in Transformer Bushings*

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Product

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About

Review of Detection Methods for Typical Faults in Transformer Bushings^*