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    • 73. 发明公开
    • Control system for variable speed hydraulic turbine generator apparatus
    • 对于具有可变速度的液压涡轮发电机控制系统。
    • EP0220492A2
    • 1987-05-06
    • EP86113077.1
    • 1986-09-23
    • HITACHI, LTD.THE KANSAI ELECTRIC POWER CO., INC.
    • Haraguchi, EijiNakagawa, HirotoBando, AkiraKuwahara, TakaoNohara, HaruoOno, Kenichi
    • H02P9/42H02P9/04
    • H02P9/007H02P9/42
    • A control system for variable speed hydraulic turbine generator apparatus comprises an induction gene­rator (l) connected at its primary side (la) to an AC power line system (4), a secondary excitation controller (3) connected to the secondary side (lb) of the induction generator (l) and being responsive to a generator output command signal (Po) supplied externally to supply to the induction generator (l) an excitation current which causes the induction generator (l) to generate AC power at the same frequency as that on the AC power line system (4), a hydraulic turbine (2) for rotating the induction generator (l), a guide valve (ll) for regulating the amount of water supplied to the hydraulic turbine (2), a rotation speed detector (6) for detecting a rotation speed of the induc­tion generator (l), a rotation speed command calculator (l5) for receiving a hydraulic turbine running condition signal (Po, H) inclusive of the external generator output command signal (Po) and calculating an optimum rotation speed command (Na), a rotation speed controller (l6) for comparing the optimum rotation speed command (Na) with a rotation speed signal (N) from the rotation speed detector (6) and producing a guide valve opening control signal (Ya) in accordance with a difference (ΔN) between the optimum rotation speed command (Na) and the rotation speed signal (N), and a guide valve driver (l0) responsive to the guide valve opening control signal (Ya) to deliver to the guide valve (ll) a signal which controls the opening of the guide valve (ll) in accordance with the guide valve opening control signal (Ya).