초록 ▼

A power adjustment apparatus includes a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of the stator winding and the rotor winding being connected to a power-system bus, and a winding terminal of the other being connected to the

A power adjustment apparatus includes a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of the stator winding and the rotor winding being connected to a power-system bus, and a winding terminal of the other being connected to the power-system bus via an impedance load, a driver axially coupled to the rotor to drive the rotor, and a controller which gives the driver a command value to adjust the phase difference between the stator and the rotor to a desired value.

대표청구항 ▼

1. A power adjustment apparatus comprising:a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of said stator winding and said rotor winding being connected to a power-system bus, and a winding terminal of the other being connected

1. A power adjustment apparatus comprising:a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of said stator winding and said rotor winding being connected to a power-system bus, and a winding terminal of the other being connected to said power-system bus via an impedance load;a driver axially coupled to said rotor to drive said rotor; anda controller which outputs a command to said driver to adjust a phase difference between said stator and said rotor to a desired value. 2. The apparatus according to claim 1, further comprising one of a capacitor and a reactor connected to said power-system bus. 3. The apparatus according to claim 1, further comprising a power system stabilizing system,wherein said power-system bus has a synchronous generator, andsaid power system stabilizing system receives a detected speed value from said synchronous generator, calculates a command value of the rotating angle of said rotor in accordance with a deviation between the detected speed and a set value, and outputs the command value to said driver via said controller. 4. The apparatus according to claim 3, further comprising a closing circuit breaker between said power-system bus and said phase shifter,wherein said power system stabilizing system closes or opens said closing circuit breaker. 5. The apparatus according to claim 1, further comprising a transformer connected between said power-system bus and said rotor winding of said phase shifter. 6. The apparatus according to claim 1, wherein said impedance load is at least one of a resistance reactor and a capacitor. 7. The apparatus according to claim 6, further comprising a voltage fluctuation suppression controller which receives a bus voltage detected on said power-system bus, calculates a command value of the rotating angle of said rotor in accordance with the magnitude of the bus voltage, and outputs the command value to said controller. 8. A power adjustment apparatus comprising:a phase shifter including a stator having a stator winding and a rotor having a rotor winding, winding terminals of said stator winding and said rotor winding being directly connected to a power-system bus, the phase shifter having a leakage impedance of said stator and said rotor;a driver axially coupled to said rotor to drive said rotor; anda controller which outputs a command to said driver to adjust a phase difference between said stator and said rotor to a desired value to control power consumed by the leakage impedance. 9. The apparatus according to claim 8, further comprising a transformer connected between said power-system bus and said rotor winding of said phase shifter. 10. The apparatus according to claim 8, further comprising one of a capacitor and a reactor connected to said power-system bus. 11. The apparatus according to claim 8, further comprising a voltage fluctuation suppression controller which receives a bus voltage detected on said power-system bus, calculates a command value of the rotating angle of said rotor in accordance with the magnitude of the bus voltage, and outputs the command value to said controller.