Abstract
Recently, with the growth of demand, power system becomes large and complex and generation plants are located far from the load center. As a result, power system instability becomes more serious.
On the other hand, the active and reactive powers are controlled rapidly and flexibly by the superconducting magnetic energy storage (SMES) system.
In this paper, we propose a practical method to suppress power oscillation in a multi-machine power system by using SMES, in which its active power is controlled by the signal derived from a bus frequency deviation. This controlled scheme is conducted easily only by detecting the frequency deviation on the site.
The proposed method is examined on a 4-machine miniature power system connecting 1 MJ-SMES as well as another digital simulation using the same model.
The result of this examination study shows the effectiveness of the proposed method.
