Experience with Transformer and Shunt Reactor Failure Investigation at a Large Transmission Network Operator

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.