Parameters for modeling transmission lines and transformers in transient simulations

Most investigations of power system transient behaviors are performed using computer simulation packages like the Electromagnetic Transients Program (EMTP). Scale modeling using Transient Network Analyzers (TNA) is still done, but decreasingly so as computer simulation models for system components are gradually improved. Engineers and researchers who perform transient simulations typically spend only a small amount of their total project time actually running the simulations. The bulk of their time is spent constructing the overall system model. Obtaining parameters for component models. Benchmarking the components models to confirm proper behaviors, and Benchmarking the overall system model to verify overall behavior. Only after the component models and the overall system model have been verified can one confidently proceed to run meaningful simulations. Even then, if there are some transient event records to compare against, more model benchmarking and adjustment may be required. Here, the authors present recommendations on how to obtain the parameters needed to model overhead transmission lines and transformers, the two most prevalent components of a power system.