Research and Design of Rogowski Coil of Middle Voltage Electronic Current Transformer

Based on the analysis of working principle and technical characteristics of electronic current transformer,this article designed Rogowski coil of middle voltage electronic current transformer and made a prototype.The framework materials,section construction,anti-disturbance and temperature effect of the coil were analyzed.The test results were compared and the optimal conclusion was drawn.The electronic current transformer composed of a regulation unit completes the measurement and protection function simultaneously by one coil.The prototypal test was passed.