Abstract
Recently, it becomes more difficult to build new generation plants close to the load center. It may produce a severe problem on the voltage stability of power system. On the other hand, it is expected that the introduction of the superconducting magnetic energy storage equipments (SMES) causes the improvement of the operation efficiency of the power system. It has been studied that SMES may be effective as a power system stabilizer.
In this paper, the effect of SMES on the power system voltage stability is evaluated. Several control schemes are studied in order to improve the voltage stability. It is illustrated that, SMES being installed at the load bus, the voltage stability can be improved by the continuous control of the reactive power. Further, with the ability to control the real power, SMES can expand the operation limit. The optimum location of the SMES with respect to the voltage stability is also studied.
