Relation of Winding Resistance Measurement and Dissolved Gas Analysis for Power Transformers
| Autor: | Roya Nikjoo, Nami Mahmoudi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Oil analysis
020209 energy Dissolved gas analysis 010401 analytical chemistry 02 engineering and technology Troubleshooting 01 natural sciences 0104 chemical sciences Reliability engineering law.invention Gas formation law 0202 electrical engineering electronic engineering information engineering Environmental science Transformer |
| Zdroj: | 2019 IEEE Milan PowerTech. |
| DOI: | 10.1109/ptc.2019.8810560 |
| Popis: | Winding Resistance Measurement and Dissolved Gas Analysis are two common methods in diagnostics of oil filled power transformers. Since winding resistance measurements are simple to perform and are not aggressive for the transformer, this test is commonly used off-line to check the state of transformers. WRM is executed as a factory test, during installation, scheduled maintenance routine, troubleshooting or unscheduled maintenance. Unlike WRM, oil sampling and Dissolved Gas Analysis can be done even when the transformer is in operation. DGA can be useful in detection of the faults that lead to some key gas formation and usually some of those faults can also be detected by WRM. In this paper, DGA and WRM results for several case studies are presented and their contribution for faults detection is investigated. The results show the agreement between DGA and WRM and also show how WRM can be used to fairly localize the problem. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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