Comparative Analysis and Reconciliation of Gas Turbine Models for Stability Studies

Gas turbines have become increasingly popular in recent years in different power systems, due to their lower greenhouse emission as well as the higher efficiency, especially when connected in a combined cycle setup. With increasing installations of gas turbines scheduled in different countries, the dynamics of the gas turbines become increasingly more important. In order to study such dynamics, accurate models of gas turbines are needed. This paper presents a comparative analysis of two most widely used mathematical models, namely the IEEE and Rowen´s model. Efforts were also made to reconcile the two models and to obtain a hybrid model which uses characteristics derived from the IEEE model.