Transformers are a large part of the component structure of the electricity system. Knowing the condition is essential to meeting the goals of maximizing return on investment and lowering total cost associated with transformer operation.
In order to reconcile both decreasing maintenance spending and reliable service, condition based maintenance (CBM) is often proposed. The successful application of CBM lies in obtaining information transformers, so that, on the one hand, a critical condition will be noted early enough to take measures and on the other hand, so that only minimal maintenance is being applied to transformers still in good condition.
The paper covers the following areas.
General aspects of aging in transformers.
An overview of condition monitoring methodology with partial discharge patterns in focus.
Partial discharge measurement and diagnostics on power transformer using a multi channel digital PD detector.