Summary
Transformers and shunt reactors are generally very reliable and durable. However, failures sometimes occur. In case of suspected failure, an investigation is made to confirm that the transformer or shunt reactor has indeed failed and to assess the extent of the damage. Once the extent of the damage is known, the operator and other interested parties can make an informed decision about whether to repair or replace the transformer or shunt reactor.
Read more Read lessThis paper analyses transformer and shunt reactor failures in England and Wales over a period of more than 20 years. In each case, the findings of both the initial failure investigation and the scrapping or tear-down investigation have been reviewed. The initial failure investigation techniques applied are analysed to show those which were most useful in identifying the failure, its cause, and the extent of the damage to the transformer. Special emphasis is placed on analysing the results of liquid tests and different electrical tests. Based on this information and experience, the paper draws conclusions and makes recommendations about which failure investigation techniques are most effective.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | A2_11279_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | United Kingdom |
| Study committees | |
| File size | 913 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
RYDER Simon - Doble PowerTest Great Britain; BAJWA Asim - Doble PowerTest Great Britain; HOOTON Ruth - National Grid Great Britain
Keywords
Transformer, Shunt Reactor, Failure, Investigation, Inspection, Testing
