| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable the use of an induction motor of standards of measure, by substituting an inexpensive induction motor for an expensive DC motor and adopting a DC booster (chopper booster). <P>SOLUTION: In a power system within a power station comprising a high-voltage AC bus 5, which supplies power to an in-station auxiliary machine located inside a power station in a power plant, an emergency diesel generator 11, which is connected to the high-voltage bus and supplies AC power at the loss of the external power of the plant, a low-voltage AC bus 1 connected via a step-down transformer 3 from the high-voltage AC bus; and a DC power facility 24 which is connected to the low-voltage bus and comprises a charger 13, a storage battery 15, and a DC bus 14, a DC booster 20 connected to the charger is provided, and a plurality of inverters 18 are connected via a bus 19 for power supply to an emergency motor to the DC booster; and emergency induction motors 34 are installed separately for each inverter, and each emergency induction motor is supplied with power from each inverter in emergency situations of the plant. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
