Multi-Rate for PNI
In this video, we're going to look at the new Multi-Rate functionality introduced in PSCAD v5.1. Specifically, we'll demonstrate how to perform Parallel Network Interface, or PNI, simulations, where the projects at each end of a transmission line run at different time steps.
Key Topics Covered:
00:35 Chapter 1: Setting Up the Simulation – An overview of starting with a standard PNI simulation and decoupling time steps between projects, such as setting one project to 15 microseconds and the other to 50 microseconds.
01:15 Chapter 2: Transmission Line Requirements – A look at the critical requirement to use the Bergeron model for transmission lines, as the frequency-dependent phase model is not currently supported for multi-rate simulations.
01:57 Chapter 3: Important Restrictions – Important guidelines regarding foreign versus alien ends (limiting multi-rate to a single instance of PSCAD) and ensuring travel time is at least twice the length of the largest time step.
For further information on project organization and module definitions, please refer to the PSCAD Help System:
https://www.pscad.com/support/support-resources