抄録
By using a needle-plane electrode system, electrical treeing discharges were measured with a computer-aided partial-discharge measurement system. It was found that time derivative of applied voltage (dv/dt) plays an important role in determining the occurrence of partial discharge (PD), while PD intensity is strongly determined by the applied voltage. Based on the measurement results, a model for electrical treeing discharges was proposed. The effects of applied voltage and frequency were also investigated by applying triangular voltage. The experimental results were compared with the proposed model. It was found that the model could explain the voltage and frequency dependence of electrical treeing discharges.
