Application of D-dot Sensor for Partial Discharge Waveform Measurement

This paper aims to perform a quantitative study to extract meaningful information from the captured PD data. The results lead to finding methods to classify and distinguish various PD defects through waveshapes measured by an electromagnetic field D-dot sensor. Moreover, as there is no limitation for utilizing the designed testbed and sensor in the AC application, we performed all the experiments for both AC and DC stresses. The AC individual PD pulse measurement enables us to compare the AC and DC PDs and classify the AC PDs according to their PD waveshapes instead of the well-known phase-resolved patterns.