Effect of shielding on surge overvoltages in multilayer type windings of power transformer
| Autor: | Marek Florkowski, Michal Swiatkowski, Bartlomiej Adamczyk |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Engineering business.industry Surge arrester 020209 energy Electrical engineering 02 engineering and technology Structural engineering Distribution transformer 01 natural sciences law.invention law Overvoltage Insulation system 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Energy efficient transformer Electrical and Electronic Engineering Transformer business Delta-wye transformer Transformer effect |
| Zdroj: | IEEE Transactions on Dielectrics and Electrical Insulation. 23:1627-1635 |
| ISSN: | 1070-9878 |
| DOI: | 10.1109/tdei.2016.005691 |
| Popis: | Power transformers are subjected to surge overvoltages during routine tests and in exploitation. These overvoltages pose a threat to the transformer internal insulation system and may lead to the transformer failure. Application of electrostatic shields to the transformer multilayer winding to improve its surge behavior is discussed in this paper. The analysis of surge overvoltage propagation inside an experimental layer type winding of power transformer equipped with two electrostatic shields was presented based on measurement results. Various configurations of the shield connections were considered, including floating and polarized ones. The influence of location of the shields and polarization to the winding tabs on the magnitude and distribution of surge overvoltages was investigated and the shielding effectiveness was discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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