Modelling and Simulation of a Combustion Turbogenerator for Control Analysis and Design

This paper introduces the mathematical model of a 32 MVA combustion turbogenerator, including its control system, which has been implemented to perform real-time simulation experiments. The turbogenerator model comprehends the interconnection of the gas turbine, synchronous generator, turbine control system and generator control systems. The turbogenerator model allows simulation of turbogenerator startup, from turngear-speed up to synchronization-speed, and turbogenerator loading throughout the generator capability curve, from minimum-load condition up to peak-load condition. The proposed model is intended for the development of control systems, including speed, voltage, real power and reactive power controls. Simulation results using digital PI control algorithms are presented.