Classification of partial discharges in power transformers using a method based in partial areas

BYRON CASIGNIA; ANDRES CISNEROS; XIMENA LOPEZ; JOHN MORALES

Latest Advances in Electrical Engineering, Electronics and Energy

Springer International Publishing

Año: 2021; p. 1 - 12

Power transformers are fundamental components in an electrical distribution system that should deliver uninterrupted power to users, because of this a good diagnosing of the operational status is important. The estimation of the transformer conditions depends directly on electrical, mechanical, thermal, and chemical stress levels. High levels of stress generate high levels of partial discharges which can cause insulation failures. This work proposes a novel method to detect where a partial discharge happens in a power transformer´s winding using a method based on the calculation of absolute areas of voltage curves and a numerical regression with polynomial interpolation. All of these are in a simulated environment with a determined margin of error instead of the classical methods which are prone to a higher failure rate.