Modeling of an island grid [power system]

An operating model of a small electric power system grid has been developed. The power system generators are predominantly gas turbine-driven and the turbines and generators are all modeled according to the IEEE recommended models and in some cases, by models as given by various turbine manufacturers. The system model was then tested on a digital computer for various load changes. Using a developed personal computer-based data acquisition system, various operational load changes were made on the power system and the transient effect upon it was measured. These changes were then used as inputs into the computer model of the power system and its theoretical reaction was obtained. This was then compared with the measured reaction. Findings show that the theoretical and the actual results compared very favorably.