ISSN 2630-0583 (Print)
ISSN 2630-0656 (Online)
Journal of Current Science and Technology
Rangsit Journal of Arts and Sciences. Vol.6 No.1 , January - June 2016.
Coordinated passivation control for power systems with STATCOM and energy storage
This paper deals with a coordinated passivation controller design for an electrical power system with static synchronous compensator (STATCOM) and (battery) energy storage to enhance transient stability and voltage regulation. This design technique is developed for multi-machine power systems and its performance is evaluated on a classic four-machine benchmark system consisting two synchronous generators and two doubly-fed induction generators (DFIG) together with STATCOM and battery energy storage. This method is able to use to achieve not only power angle stability but also voltage regulations during a large perturbation (or disturbance) on the transmission lines, such as a symmetrical three-phase short circuit fault and a load change. The simulation results show that the proposed controller can improve the system transient stability as well as frequency and voltage regulations simultaneously. Furthermore, the proposed controller has more advantages over the existing nonlinear controllers and a linear controller, especially, a feedback linearizing controller, an interconnection and damping assignment passivity based controller from our previous work, and a power system stabilizer, respectively.