부산대학교 도서관

Idealized swing equations are used in the development of local control strategies for var units, with the objective of providing damping to all oscillatory modes of multimachine power systems. A one-machine infinite-bus system is used to introduce and motivate the method. The control strategy provides damping even during severe transients involving reverse power swings. For systems containing n machines, simulation results indicate that n-1 locally controlled var units, using only local output feedback, can be placed so as to dampen alloscillatory modes of the system, provided that a stable equilibrium point exists and that the initial disturbance is limited in severity.