Method of identifying the strategic placement for compensation devices

An algorithm has been developed for identifying power system bus clusters, called control areas, that have strong local controllability and observability property for measurements and controls at the buses or on generators within the control area. In this paper, two types of control areas are identified using the proposed algorithm. The two control areas are identical under light load conditions, but they are different as the power system approaches voltage collapse or poorly damped low frequency oscillations. Simulation studies of a simple two area power system model were conducted to assess the understanding of strong controllability and observability of the two different types of control areas. This helps in understanding of voltage instability and inter-area oscillations. Hence, one can utilize the proposed algorithm for guidance to place compensation devices such as FACTS or nonFACTS devices strategically so that the performance of the power system will be enhanced to the full