MATLAB GUI based Partial Discharge Localization in Power Transformers using UHF Acoustic Method

Abstract

Partial Discharge (PD) problem is getting more attention day by day due to its severity towards insulation deterioration and internal arcing problems. In this Paper, PD detection is illustrated with the help of a case study conducted on a Power Transformer by using Ultra High Frequency (UHF) injection and acoustic method combined with High frequency Current Transducer (HFCT) to get more accurate results. This method is getting more popular day by day due to its accuracy in PD detection. This paper represents the mathematical approach of UHF acoustic method for the Localization of PD in MATLAB GUI environment. Field testing is done on 100 MVA 400/220 kV Interconnecting Transformer at 400 kV receiving station and the obtained results are compared with the output of mathematical algorithm in MATLAB software. Results revels the effective visualization of the possible position of the PD in the transformer tank in terms of x, y and z coordinates.