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    Variable-speed pumped-storage power generating system
    2.
    发明公开
    Variable-speed pumped-storage power generating system 失效
    Energiegeneratorsystem vom Pumpen-Aufschlagstyp mitveränderlicherGeschwindigkeit。

    公开(公告)号：EP0243937A1

    公开(公告)日：1987-11-04

    申请号：EP87106153.7

    申请日：1987-04-28

    申请人： HITACHI, LTD.

    发明人： Sakayori, Akihiro ,  Kuwabara, Takao, c/o Hitachi Ltd. ,  Bando, Akira ,  Ono, Yasuteru ,  Hayashi, Shigeaki ,  Yokoyama, Isao ,  Ogiwara,Kenzyu

    IPC分类号： F03B15/06 ,  H02P9/42

    CPC分类号： F03B15/06 ,  H02P9/007 ,  H02P9/42 ,  H02P2101/10 ,  Y02E10/226

    摘要： A variable-speed pumped-storage power generat­ing system includes a variable-speed driver composed of a generator/motor (l) and a frequency converter (4) connected to an electric power system (5) and a pump/­turbine (6) driven by the generator/motor. The power generating system comprises an optimum rotation speed function generator (l2) calculating, on the basis of at least an externally applied output command signal, an optimum rotation speed of the motor for driving the pump with high efficiency, a speed detector (2) generating a speed detection signal by detecting the actual rotation speed of the motor, a speed regulator (l6) receiving the output signals of the function generator and speed detector to generate an output correction signal for decreasing the speed error to zero, an adder (l0l) adding the output correction signal to the output command signal, a comparator (l02) comparing the output signal of the adder with an output power detection signal generated from a motor output detector (40) and generating an error signal therebetween, and an output regulator (8) control­ling the excitation of the secondary winding of the motor through the frequency converter to decrease the output power error to zero, thereby controlling the output and rotation speed of the motor. The power generating system also comprises an optimum guide-vane opening function generator (l3) calculating an optimum guide vane opening on the basis of at least the output command signal, a comparator (l03) comparing the output signal of the second function generator with a guide-vane opening detection signal from a guide-vane opening detector (70), and a guide-vane opening regulator (9) controlling the opening of the guide vanes according to the result of comparison.

    摘要翻译： 变速抽水蓄能发电系统包括由发电机/电动机（1）和连接到电力系统（5）的变频器（4）和驱动的泵/水轮机（6）组成的变速驱动器 由发电机/电机。 发电系统包括：最佳转速函数发生器（12），至少基于外部施加的输出指令信号计算用于高效驱动泵的电动机的最佳转速;速度检测器（2） 通过检测电动机的实际转速产生速度检测信号;接收功能发生器和速度检测器的输出信号的速度调节器（16），以产生用于将速度误差降低到零的输出校正信号;加法器（101） 将所述输出校正信号与所述输出指令信号相加;比较器，比较所述加法器的输出信号与从电动机输出检测器产生的输出功率检测信号，并在其间产生误差信号;以及输出调节器 （8）通过变频器控制电机的次级绕组的励磁，将输出功率误差降低到零，从而进行控制 电机的输出和转速。 发电系统还包括基于至少输出命令信号计算最佳引导叶片开度的最佳导叶开启函数发生器（13），比较器（103）将第二函数发生器的输出信号与 来自导向叶片开度检测器（70）的导向叶片开度检测信号，以及根据比较结果控制导向叶片打开的导向叶片开度调节器（9）。