Performance Analysis of an Offshore Gas-Turbine Power System

The objective of this paper is to analyze the dynamic performance of an offshore gas-turbine power system operating in normal and abnormal situations. The system primarily consisted of two gas-turbine generation systems and other electrical components. The mathematical models for the components, developed to cater for the dynamic behavior of the system using Simulink and SimPowerSystems, included gas-turbine model, electric machine model, electromechanical model, and three-phase power transformer model. The method for predicting the dynamic responses of interconnected machine systems, named dynamic voltage-current combination method, was employed to connect system components in this research. Simulation results show that the system operated satisfactorily in normal and abnormal conditions. The dynamic behavior study for an offshore power system is essential for system planning, operation, and further expansion.