Targeting to the fact that CVT（capacitor voltage transformer）can not transfer harmonics correctly

the paper presents a practical method to identify CVT harmonic model parameters for restoring the original signals imposed on primary side by correcting harmonic data measured on side of CVT output using CVT coefficient of RCF（ratio correction factor）ruled by CVT model parameters identified. The comparison between field measurement and aftereffect of correcting shows that the present method is feasible and the result is accurate as well.