An investigation of adaptive control of the rotation speed of gas turbine power plants

Resumo

The use of adaptive control of gas turbine units (GTUs) intended for the drives of electric generators in electric power stations operating in the offline mode is considered. The requirements for electric power quality indices for such power plants and a standard control system for GTUs, which it is proposed to supplement with a special adaptation module, are discussed. The desired behavior of control system is set using the reference model. The reference model is created based on the simplified nonlinear model of a GTU. The structure of the reference model is chosen based on the physical principles of energy conversion in the GTU. The coefficients of the model and the nonlinear diagrams of change of the model parameters are determined by the results of experiments on a real GTU. The new adaptive control system is compared with the standard GTU control system. For this purpose, the diagram of load change is set and the transient processes at load changes are analyzed.