Study of a novel CT for short-circuited current measurement

Technology of short-circuited experiment of the power capacitors is crucial to transmit the energy efficiently with high stability and reliability. Research indicates that the equivalent circuit of the short-circuited experiment of the capacitors can be simplified as R-L-C under-damped loop. Experimental currents belong to pulsed waveforms. The measurement system centered on Rogowski coil is proposed to measure short-circuited currents of the measured capacitors. The operation principle of Rogowski coil is introduced. The proposed simulation model is composed of Rogowski coil, experimental capacitors and powering loop and load. The methods for optimizing coil´s parameters are presented. The characteristics of the measurement system are analyzed. Simulation results based on the SIMULINK environment of MATLAB software is presented. The prototype CT centered on the proposed theory and design methods are presented. Simulation and experimental results can verify the validity of the measurement system