Modelling Of Transformer Paper Presentation & Seminar

Modelling of transformer with Incipient fault detection in transformers can provide early warning of electrical failure and could prevent catastrophic losses. To develop transformer fault detection technique, a transformer model to simulate internal incipient faults is required. This paper presents a methodology to model internal incipient winding fault in distribution transformers. These models were implemented by combining deteriorating insulation models with an internal short circuit fault model. The internal short circuit fault model was developed using finite element analysis.

The deteriorating insulation model, including an aging model and an arcing model connected in parallel, was developed based on the physical behaviour of aging insulation and the arcing phenomena occurring when the insulation was severely damaged. The characteristics of the incipient faults from the simulation were compared with those from some potential experimental incipient fault cases. The comparison showed the experimentally obtained characteristics of terminal behaviours of the faulted transformer were similar to the simulation results from the incipient faults models

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