The voltage coefficient determination of high voltage capacitive divider by serial summation of voltage transformers

The paper presents an absolute measurement method of determining the voltage coefficient(VC) of high voltage capacitive dividers(CVD) by serial summation of voltage transformers. Under a series of double-voltages, by successively comparing a CVD with a full-insulated transformer, a semi-insulated transformer and their series, the VC of the CVD were gotten. The method was verified by using two voltage transformers rated with (110/√3 )kV/(100/√3)V in series.