Design and Experimental Research of Enclosed Gas Insulated DC High Voltage Generator

The high voltage testing device are employ a closed SF6 gas-insulated structure, and integrate the charging transformer, double-voltage capacitor, filter capacitor, high-voltage rectifier silicon stack and other components into a closed gas-insulated tank. The electric field simulation of testing device are analyzed to check its insulation design requirement by using the finite element method. At the same time, the gas insulated DC high voltage generator are studied and the performance test of testing device are carried out which the testing results are meet the standard requirements. The testing item contain the high-voltage side current measuring device test, the high-voltage side voltage measuring device test, the short-term stability test of output voltage, the withstand voltage and polarity conversion test, etc. The testing device are realized which the volume reduced 60%, the weight reduced 27% and the field assembly time reduced 40% which it compared with the traditional testing equipment.