The field test of DC current transformer is helpful to find out the possible faults and hidden troubles of the measuring and monitoring equipment in the converter station. 

It is of critical importance to ensure the safe and stable operation of the converter stations and the High-voltage direct current#Back to back system in the event of peak power demand. Our country has achieved a very high level in the UHVDC test field, and has also accumulated valuable experience in the field calibration and testing of DC equipment. It is suggested that the field test technology of DC transformer should be popularized in relevant research projects and routine tests.