Stabilization of electric power system using the variable speed flywheel generator

The consumption of electric power is ever increasing and an electric power system must transfer large amounts of active power securely. It is necessary to equip the system to control active power continuously and rapidly. In recent years, a variable speed flywheel generator (VSFG) has been used to compensate the flicker caused by arc furnaces. In this paper, the authors propose to use the VSFG to stabilizing a power system and show that a parallel-type VSFG stabilizes system power swings and series-type VSFGs generate reactance voltages to compensate for the line inductance of power systems. Experiments using a motor-generator set simulator with a wound-type induction motor with a flywheel are carried out to demonstrate the stabilizing and controlling abilities of such a scheme.