A Comprehensive Study on the Influence of Proximity Effects on Electromagnetic Transients in Power Cables (original) (raw)

In this paper, we present a comprehensive study on the influence of proximity effects on electromagnetic transients in underground power cables. Existing simulators for electromagnetic transients (EMT) neglect proximity effects when computing cable parameters. It has been demonstrated that, in some scenarios, this approximation can result in significant errors on the predicted transients. The goal of this study is to identify the scenarios where proximity effects must be taken into account, and the error that one may incur if such effects are neglected. The study is performed using the recently-proposed MoM-SO method for the determination of cable resistance and inductance. MoM-SO accurately predicts skin, proximity, and ground effects over the frequency range of interest for transient analyses, with an accuracy comparable to time-consuming finite element calculations. The study considers cables of different type and geometry under multiple excitation scenarios. Results elucidate th...