Fuzzy control application in power plants

The application to a unit-type power plant is presented with some simulation results of load sheddings. To improve the quality of the electrical energy, expressed in frequency and voltage, the capability of power plants to perform large and rapid load variations is required. The unit power station shows by such load changes a highly nonlinear behaviour. The use of a fuzzy controller as a nonlinear one to dominate these large and fast load variations necessitates the consideration of additional information in the form of process variables and linguistic knowledge to characterize the nonlinearity of the controlled process. On the basis of the different operating modes and control requirements, the control structure with fuzzy logic is carried out.