A research about a new Rogowski coil model based on the control principle

The Steady current is different from pulse currents in frequency and magnitude. The interferences in the work environment of the currents transformer is greater than the lab. It is important to understand the Rogowski coil's character of measuring the 50 Hz currents and the measure error. This paper presents a model of Rogowski coil based on the control theory. Research based on the model about the character of the Rogowski measuring the 50 Hz currents and the effect of measure error has been presented in this paper.