Application and Analysis on Frequency Conversion Series Resonance Technology in 220kV Cable Withstand Voltage Testing

Abstract

AC withstand voltage test is the most severe, the most direct and the most effective test method of judging the XLPE Power Cable insulation Conditioning, It is of decisive significance in determining weather the Power Cable is measured up. Traditional test transformer is bulky, it requires high-capacity of power supply when it is used in AC withstand voltage test of high-capacity Power Cable. This paper adopted the Frequency Conversion Series Resonance Technology in 220kV Cable Withstand Voltage test program and accomplished the test successfully, Greatly reduced the capacity of the power test equipment, it also helps to promote the test quality and the work efficiency, which proved the feasibility and effectiveness in the long-distance high-voltage XLPE cables grade AC voltage test with the Frequency Conversion Series Resonance Technology.