Research on error compensation method for 10kV 1kA high accuracy current measuring device

In this paper, a high-voltage current measuring device with shielding is designed and developed. Its electrotechnical error compensation and active error compensation are carried out to meet the accuracy level of 0.01 under low voltage. A capacitive leakage error test method is proposed. Theory and experiment verify the consistency and effectiveness of the proposed reference phase-locked method and the applied voltage-current method. The error analysis method of the high-voltage current measuring device is presented. Through error synthesis, the error analysis of the high voltage current measuring device is completed, proving that it meets the requirements of the error limit under high voltage. The effectiveness of error compensation in this paper is verified by studying the current measuring device and its error analysis technology.