Time-Domain Modeling and Simulation of Partial Discharge on Medium-Voltage Cables by Vector Fitting Method

In this paper, a transmission line model is developed based on lumped element representation. A simple and efficient procedure is presented for modeling medium-voltage (MV) power cables directly in time domain. The proposed methodology, considering both the skin effects and dielectric losses, considers the frequency-dependent parameters of the line. To incorporate both the skin effects and dielectric losses into the state matrices, a fitting method is applied. With this method, a precise model of the MV power cables is constructed. Using the estimated propagation speed of the presented model, the experimental results show that the accurate partial discharges location on MV power cables can be achieved.