Abstract：DC high voltage dividers was usually calibrated by the method of resistance or leakage current mesurement. The 100kV and below dividers voltage ratio was measured by resistance measurement,as leakage current could be ignored because of its little order of magnitude.And the leakage current measurement method was used in the dividers with resistance-measurement-layer-only structure.Voltage summation was applied in DC high voltage dividers measurement. The improved voltage summation mathematical model was built based on the new low-voltage side resistance out-put technology.An experiment was carried out on a 100kV DC divider, and normalized deviation method was used in the voltage summation experiment result evaluation. The experiment shows that the component uncertainty of improved voltage summation is 10-5～10-6, and the 100kV DC divider uncetainty is 1.3×10-5 (k=2).
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2024, Vol. 45 
