Interval Observer based Extended Predictive Controller for Heavy Duty Gas Turbine

As the main component of gas-steam combined cycle power plant, heavy-duty gas turbine (HDGT) with the property of safety, reliability and high efficiency, which can greatly improve the performance of deep-peak shaving capability and fast frequency modulation performance of power system. With respect to the variable load control strategy for HDGT, an interval observer based extended model predictive control is proposed in this study by combining the interval observer and model predictive control, which is built upon the stability analysis of linear state feedback control. The salient property of proposed method lies in the reduction of negative effect caused by external in the process of variable load control. The typical study cases are selected for verifying the effect of the proposed methods, which outperforms the others methods in aspect of stable and safe.