Simulation Analysis on Return Voltage Curve of Oil-Paper Insulation Equipment
Huajun Ran · Electrotechnics Electric · 2012
Return voltage measurement is a non-destructive electrical insulation diagnostic method,which can effectively diagnose condition of oil-paper insulation equipment.This paper established the relationship between return voltage characteristic quantities and insulation condition using equivalent circuit model based on dielectric polarization characteristics.The change laws of return voltage curve caused by variation of circuit parameters were simulated and analyzed.Simulation results show that dominant time constant is an effective characteristic quantity for diagnosing insulation condition of power equipment with different geometric capacitance.