F - Mech Eng,Light,Heat,Weapons – 03 – B
Patent
F - Mech Eng,Light,Heat,Weapons
03
B
322/6.3
F03B 15/06 (2006.01) F03B 15/08 (2006.01) H02P 9/04 (2006.01)
Patent
CA 1266506
ABSTRACT OF THE DISCLOSURE Disclosed is a control apparatus for a variable-speed hydraulic power generating system com- prising a variable-speed a.c. electric generator connected to an a.c. electric power system and a hydraulic machine system including a water turbine for driving the generator and a guide vane for controlling an amount of water supplied to the water turbine. The control apparatus comprises a frequency converter connected between the electric power system and the generator for controlling electric power supplied from the generator to the electric power system, control means operating in response to at least an externally applied power generation command signal for controlling, on one hand, the frequency converter thereby controlling the electric power supplied from the generator to the electric power system and generating, on the other hand, a guide-vane opening command signal for control- ling the guide vane thereby controlling the amount of water supplied to the water turbine, and means for reducing resonance which may occur in the hydraulic machine system when the rotation speed of the water turbine changes in response to a change of the external- ly applied power generation output command signal.
549529
Bando Akira
Haraguchi Eiji
Kuwabara Takao
Nakagawa Hiroto
Shiozaki Junichi
Hitachi Ltd.
Kirby Eades Gale Baker
The Kansai Electric Power Co. Inc.
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