Parameter Initialization
This guide is intended as an informal place to discuss, document, and share how to represent and transform power system models over varying time scales.
The dialogues shown below are some of the options PowerWorld exposes when transferring a power flow state to a phasor dynamics model.
Near nominal voltage magnitude and frequency are often modeled as constant impedances at the terminating bus.
Information on phase and tap controls
The dialogue shown below is some of the options PowerWorld exposes when transferring a phasor dynamics state to its corresponding power flow model.
Effective EMT modeling requires some a priori engineering judgment based on the temporal & spatial scale of the problem.
Often approximated, especially when empirical data are missing.
The delay in TEM propagation can be approximated algebraically for short transmission lines or at low frequencies.