Effective bushing diagnosis using partial discharge testing
| Autor: | Laurentiu Viorel Badicu, Wojciech Koltunowicz, Jan Subocz |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Transformers Magazine Volume 4 Issue 4 |
| ISSN: | 1849-3319 |
| Popis: | This article demonstrates how the inclusion of partial discharge as a measurement parameter ensures a more reliable diagnosis of insulation condition in transformer bushings. Comparative diagnostic tests showed that the partial discharge measurements best enabled the detection of bushing defects, which the other methods were not able to detect alone. The tests were performed in the lab on oil-impregnated paper (110 kV – with induced defects) and resin-bonded paper (52 kV – with design flaws) bushings. The bushings were subjected to long-term AC tests during which the capacitance, dissipation factor and partial discharge levels were continuously measured. A correlation between the measured parameters and the bushing condition was performed to reach a best-practice conclusion. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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