抄録
In this paper, we proposed a circuit model of gas insulated shunt reactors for surge analyses in high frequency regions. The interleaved disk winding, widely used for high voltage windings, has resonance phenomena in the high frequency region and its series capacitance reduces above the resonant frequency. In order to simulate this phenomena, an equivalent circuit composed of three stage LC parallel circuits was proposed. On the contrary, the continuos disk winding are possible to be simulated by one stage LC parallel circuit because its series capacitance is almost constant through to high frequency region.
Impedance characteristics of a full scale model for a reactor winding were measured and the proposed circuit model was evaluated by comparing the measured results with the calculated ones. And it was verified that the proposed model could represent well the winding impedance up to 10MHz.
