| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to restrict an inrush current at linkage of an inducting generator and a variation in output voltage after the linkage. SOLUTION: An induction generator IG is connected to a system (S) through a serial transformer TRs. A parallel compensating converter 1 is connected to an upper-side system through a parallel transformer TRp. A serial compensating converter 2 is connected to a secondary side of the serial transformer TRs. Then, an inrush current at linkage is restricted through leakage impedance of the serial transformer TRs. The converters 1 and 2 are put under reactive power compensation control to restrict a variation in voltage. The serial compensating converter 2 is put under active power compensation control to restrict a variation in output. At the same time the serial converter is put under phase control to improve a power factor. In the serial compensation method, the apparatus is made small. In addition, a thyristor control circuit is preferably added. Then, the serial compensating converter is protected by generating a current from the thyristor control circuit when a failure current flows therein. |
