Cross Test Comparison in Transformer Windings Frequency Response Analysis
| Autor: | Wojciech Szoka, Szymon Banaszak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Control and Optimization
Computer science 020209 energy Capacitive sensing Frequency Response Analysis (FRA) Energy Engineering and Power Technology 02 engineering and technology lcsh:Technology numerical indices law.invention law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Transformer Engineering (miscellaneous) Simulation transformer windings frequency response analysis Frequency response analysis Renewable Energy Sustainability and the Environment lcsh:T Transformer windings Test comparison Energy (miscellaneous) Voltage |
| Zdroj: | Energies, Vol 11, Iss 6, p 1349 (2018) Energies; Volume 11; Issue 6; Pages: 1349 |
| ISSN: | 1996-1073 |
| Popis: | Frequency Response Analysis (FRA) is an important tool used for diagnostic measurements of power transformers. Standard test configuration applied in the industry is the end-to-end open test setup; however, an interwinding capacitive configuration is also used. This paper presents a method—Cross Test Comparison (CTC)—for simultaneous analysis of results coming from both the mentioned test setups. Such an approach could offer a more sensitive tool for detecting some faults; moreover, it takes into consideration the influence of both voltage sides of a transformer in a one test result. The authors have used several indices to quantitatively assess the test results and proposed new approach to data interpretation. CTC method was tested using data from measurements performed in three cases: a unit tested in laboratory with introduced controlled deformations; transformers measured under industrial conditions; and a transformer with FRA changes resulting from tap-changer operations. The results showed that CTC method is more effective at detecting faults on the basis of FRA measurements. |
| Databáze: | OpenAIRE |
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