Abstract
Higher thermal efficiency and operational flexibility are required for next generation thermal plants to reduce CO2 emission and cope with the increase of renewable energy which is changeable depending on the weather. The Advanced Humid Air Gas Turbine (AHAT) system is expected to meet these requirements. The system concept and cycle performances of the AHAT system were verified by operation tests of a 3MW-class test plant and a 40MW-class pilot plant so far. However, operational flexibility of commercial scale system has not been clarified sufficiently by experiment or calculation. Therefore, we develop a dynamic simulation model of commercial scale system and analyze the startup characteristics in this paper.
