Study of Partial Discharge Characteristics of Nanofilled Polypropylene Films according to the Variation in Electric Field Distribution on the Sample

摘要

In this work, partial discharge (PD) measurements of natural nanofilled polypropylene (PP) films have been performed by systematically varying the air gap between rod and plane electrodes to study the effect of field variation on PD characteristics. Results indicated that Partial Discharge Inception Voltage (PDIV) increases when either the nanofiller concentration or air gap is increased. Further, during aging, average PD magnitude and Weibull Scale Factor of PD pulse distributions decrease with increase in air gap. Electric field simulation results agree with our experimental findings.