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The influence of stray capacitances on current transformer errors is analyzed in this paper. A model for evaluating this error source is presented and a compensation circuit is proposed.
This paper investigates the performance of conventional current transformer for online partial discharge detection in high voltage cables. It is based on the frequency response of such current transformers. The frequency behaviour was investigated using a simulation package (Powersim) by varying parameters including core permeability, stray capacitance, core material etc. Experimental investigation...
This paper presents approximate equations that may be used to obtain the lower cutoff frequency fL and higher cutoff frequency fH and thereby the bandwidth of a current transformer. The equations are validated by a PSpice simulation. The Bode plots for both low-frequency range and high-frequency range for a selected design are presented. Also an overview of the various problems that should be considered...
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