直列可変インピーダンス機器による電力系統の安定化制御法

抄録

The stabilizing facilities for power systems, such as series capacitor, system damping resistor, superconducting magnetic energy storage (SMES), phase shifter, etc., are used for improving the stability of synchronous generators. The control principle of these facilities to enhance the system damping is the same in the sense that these stabilizers control the active power so as to stabilize power systems. The generalized control method for these facilities has not been studied from the viewpoint of active power control.
The generalized control method applying the variable structure control from the viewpoint of acceleration power for the synchronous generators is proposed in this paper. The variable structure control can be applied to both nonlinear and linear systems and has robustness for parameter variations.
This paper, firstly, derives coutrol law in general form from the viewpoint of active power in the synchro-nous generator. This control law can take account of the automatic voltage regulator and governor effect indirectly. The feedback gains of the controller can be determined taking account of parameter variations in the synchronous generator. Secondly, this method is applied to the one-machine infinite bus system with a variable series inductance so as to investigate the validity of this control method. The simulation results show that the controller is able to improve the system damping of the power system and is especially profitable to parameter variations.