EFFECTS OF SUPPLY VOLTAGE FREQUENCY ON PARTIAL DISCHARGE PATTERNS CONSIDERING DISCHARGE AREA
Keywords:
Partial Discharge Simulation, Stochastic Parameters, Discharge area, Supply voltage frequency and Phase Resolved plotAbstract
Partial Discharge is a high frequency discharge phenomenon having a great deal of importance for electrical
engineers, especially to those who are working with high voltages. Since last 20-30
yearsresearchershavebeenworkingonPDsimulation model and consequently different models on PD simulation have been
proposed. However, there are areas in which the simulation model could be improved upon. In this paper, a model for
Partial Discharge simulation is developed usingFiniteDifferenceMethod(FDM).Thismodeltakesintoaccount n o t o n l y
criticalfieldintensityofPDoccurrence(Ec) andresidualfield intensity(Er) but also
criticalfieldintensityfordischargepropagationalongthevoidsurface(Es) considering occurrence of partial discharge, extinction
of PD and propagation of PD along void surface to be stochastic in nature. In this paper, a Plane-Planeelectrodesystem
is considered and the void is chosen asrectangularparallelepiped. The novelty of this paper is to show how discharge areas
affect the PD patterns with the change of supply voltage frequency.
