Modeling, simulation and ontrol of as urbine in Combined cycle power plant

Abstract

Gas turbines have become increasingly popular in the different power systems, due to their 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. The purpose of this work is understanding, modelling, and analyzing the behavior of 9FB General Electric gas turbine in the Combined Cycle Power Plant (CCPP) of Shariket Kahrabaa Hadjret Ennouss (SKH) with a view to investigate the power system problems. A description of the CCPP major parts is presented with specific description of the 9FB gas turbine and its combustion system. For modeling purpose, the parameters of Rowen’s model for the 9FB Heavy Duty Gas Turbine (HDGT) are derived and several simulated tests using Matlab/Simulink are executed. The way of obtaining the parameters are based on simple physical laws. It explains briefly how to extract the parameters of the model using the operational and performance data. Rowen’s model has provided a starting point for development of other models. Among these models, the Frequency Dependent model is taken to be under study since it is suitable for long-term simulation of power system dynamic performance involving abnormal frequency conditions.