ABSTRACT
This chapter presents a mathematical model for multi-area power systems using the state variable approach. It discusses the optimal control static and dynamic output feedback controllers of multi-area power system. The chapter presents a brief introduction to pole placement controller design for isolated load frequency control (LFC) areas. It also illustrates the design of a dynamic output feedback via LQR for a two-area power system. Implementation of state feedback controllers requires measuring the state variables, which may not be accessible for measurement. In this case, state variables are estimated. Pole placement state feedback controllers assume that all states are available for feedback. In the regulator problem, the designer is interested in achieving good time response while guaranteeing the stability of the closed-loop system. These goals can be attained optimally by looking for the best trade-off between performance and cost of control.
