Design and Analysis of Pole-Placement Controller for Interconnected Power Systems

Pole placement is a control method assigned to arbitrary closed loop poles by state or output feedback. In linear systems, poles have influence on stability, system response, and transient response of the system. The applications of pole placement technique in power system operation and control have been found a significant place over the years. This paper presents salient features of pole placement technique in the design of controllers in power systems. Following this, as an application the AGC regulators are designed for a two area interconnected power system and their feasibility is tested by implementing these regulators in the wake of 1% load disturbance in one of the areas. The dynamic performance achieved with the designed AGC regulators is compared with that obtained with optimal AGC regulator designs based on full state vector feedback control concept. The investigations of the results achieved demonstrate the superiority of AGC regulators designed using pole placement technique over the optimal AGC regulators in all aspects of system dynamic response characteristics.