Modelling suggestions for a UHV AC transmission line in PSCAD/EMTDC

Transients in power systems are caused by the action of circuit breakers and switches, as well as failures. Energization, de-energization, reclosing, and fault cleaning are examples of these actions. In a switching transients’ investigation, the primary frequencies of interest span from the fundamental power frequency to around 10 kHz. As a result, the appropriate representation for various components such as transmission lines and cables, transformers, source equivalents, loads, and circuit breakers must be determined. This-work gives a modelling suggestion for overvoltage switching transients, specifically transmission line-switching. As a foundation case, this study also includes a realistic case of line energization. The goal is to provide useful guidelines for evaluating switching transient simulations.