Performance Analysis of Gas Turbine Using Hydrogen-Added Natural Gas

The off-design performance of gas turbine system is essential for a power plant. The present study developed an off-design simulation model to analyze a 4.5 MW level practical power gas turbine. The gas turbine was modelled on the basis of components models which are built with Simulink tools. Comparisons of different performance parameters at design point are performed to verify the simulation model. Off-design studies were performed on the gas turbine using hydrogen-added fuel to examine the effect of hydrogen ratio on key parameters, such as the power output, efficiency, exhaust temperature, etc. It has been shown that hydrogen-added natural gas fuels can improve gas turbine performance, as higher proportion of hydrogen leads to higher efficiency in some power output range. The study can provide a tool for performance analysis on natural gas/hydrogen fuel gas turbine.