Load Regulation Strategies and Performance Analysis of Gas Turbine Combined Cycle

Load regulation strategies can affect greatly the performance of gas turbine combined cycle. The mathematic models of key equipments of gas turbine combined cycle were built, and gas turbine combined cycle performance on ISO condition was obtained. A novel strategy of load regulation, which can make system performance to be optimal in the range of 50 similar to 400%, was proposed, and the relationships between IGV closing angle, turbine inlet temperature, turbine exhaust temperature and load were given respectively. The case, which was combined with PG6541B gas turbine and heat recovery steam generation system of non-supplemental firing, non-reheat, single pressure with integral deaerator, was approached by comparing the performance of different load regulation strategies, and the proposed strategy in the paper was validated to be best.