A Method for compensating errors of DC current transformer and a DC current using the method

摘要

The present invention is characterized by comprising: obtaining a characteristic relationship between a voltage and a temperature of a hall element of a DC current transformer; Obtaining a characteristic relationship between a current and a magnetic flux of the gap core of the DC current transformer; Measuring a voltage of the hall element; Obtaining a magnetic flux through a characteristic relationship between the voltage of the hall element and the temperature based on the measured voltage; And obtaining a primary current flowing in the DC current transformer through a characteristic relationship between the current of the gap core and the magnetic flux on the basis of the obtained magnetic flux. As a result, the error of the DC current transformer can be remarkably reduced, It is possible to manufacture a DC current transformer having a very high voltage.