Abstract
This paper presents the design of a load frequency controller (LFC) using coefficient diagram method (CDM) in a multi-area power system. The CDM controller has been designed in order to reduce effect of the vagueness as a result of governor and turbine parameters variation and load disturbance. Single-area and two-area power system frequency dynamic paradigms are modelled, as well as the physical constraints of the governors and turbines are considered. MATLAB/Simulink simulations for a single area power system and two area power system are performed to validate the effectiveness of the proposed scheme. From the simulation results it is confirmed that the proposed CDM technique, gives enhanced performance under load disturbances and constraints in the parameters. Performance comparison is made between the proposed CDM controller and an integral controller which affirms the upside of the proposed CDM method.
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