The high voltage metering equipment cannot be accurately detected, because the leakage current affects the standard current transformer under high voltage. For the problem, a set of zero leakage current high voltage electric energy standard device is developed. This device not only solves the problem that the leakage current affects the accurate measurement of the standard current transformer, but also fills the technical blank in the field of leakage current elimination of the electric energy standard device. The principle of leakage current generation is described and its influence on the error of current transformer is analyzed. A leakage current measurement method based on the transformer calibrator is proposed, which can realize accurate measurement of current transformer shielding and insulation level. Experiment shows that the developed zero leakage current high voltage electric energy standard device can eliminate leakage current and realize error detection of high-voltage electric energy measurement equipment under simulated operating conditions. This work is supported by Science and Technology Project of Stated Grid Corporation of China (No. 52182017001M).