Transformer fault detection apparatus and method

The transformer fault detection apparatus and method for estimating the location of a partial discharge within the transformer generating source is provided. Transformer failure detection apparatus according to the present invention may be sensed by different sensors located at the top of the drain valve and the lower drain valve integrated sensor unit for sensing a signal over a plurality of sensors located within each of said upper drain valve present inside the transformer first discharge area calculation unit, the arrival time of the signals sensed by different sensors, located in the lower drain valve based on the arrival time of the signals to calculate a first discharge area is estimated as the location of the partial discharge source of said transformer based based on the second discharge area calculating unit and said first discharge region and said second overlapping region of the discharge region to produce a second discharge region which is estimated as the location of the partial discharge source of said transformer to the final discharge can be estimated as the location of the partial discharge source of said transformer region It comprises parts of the final discharge area calculation for calculating.