PowerWorld Simulator GSO 

Create a simulation of a power system and analyze its work. Select specific power flow cases and monitor them across the simulation, exchange them between different flow paths, animate and visualize the system functionality. Generate reports based on monitored data.

This program was designed to make it easy to exchange power flow cases. You can view a solved power flow case graphically using animated one-lines. Some example one-lines are included in the download and additional examples are available at the FERC 715 Filings page.