Measurement of the pulse switch state current of RSD (Reversely Switching Dynistor) device is crucial to transmit the energy efficiently with high stability and reliability. The novel CT (current transformer) centered on self-integrating Rogowski coil is proposed. The operation principle, methods for properly choosing electric parameters both of RSD-based pulse switch experimental loop and the self-integrating Rogowski coil are presented. The error characteristics of the CT instrumentation are analyzed. The prototype CT centered on the self-integrating Rogowski coil according to the proposed theory and methods are introduced. Experimental results acquired by the proposed CT system are given. Experimental results can verify the validity of the novel CT measurement system.
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