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| Content Provider | IET Digital Library |
|---|---|
| Author | Pramanik, Saurav Anees, Sana Satish, Lakshminarayana |
| Abstract | Ideally, it is desirable to design and manufacture a transformer winding that can render all its internal resonances non-excitable. This study examines the effectiveness of an interleaved winding in achieving this goal. While investigating its effectiveness, it led to the establishment of a much desired theoretical basis that reinforces the reasons put forward in the literature to explain internal insulation failures observed in interleaved windings used in extra high voltage (EHV) transformers. Numerical calculations along with experimental verification on actual transformer windings are presented. This study reveals that most of the natural frequencies that are normally non-excitable in the line and neutral current responses of an interleaved winding have been rendered excitable in the disk-to-disk voltages, thus, providing favourable conditions for insulation overstress because of resonant overvoltages. Prevalence of such a condition is an inherent characteristic of interleaved windings. |
| Starting Page | 237 |
| Ending Page | 244 |
| Page Count | 8 |
| ISSN | 17518660 |
| Volume Number | 7 |
| e-ISSN | 17518679 |
| Issue Number | Issue 4, Apr (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-epa/7/4 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2012.0362 |
| Journal | IET Electric Power Applications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Disk-to-disk Voltage EHV Transformer Electromagnetic Compatibility Experimental Verification High-voltage Technique Insulation Failure Insulation Overstress Interference Interference Suppression Interleaved Winding Natural Frequency Suppression Neutral Current Neutral Current Response Overvoltage Resonance Resonant Overvoltage Transformer And Reactors Transformer Insulation Transformer Winding Transformer Windings |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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