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    Method of controlling load on power plant and load control system for carrying out the same
    1.
    发明授权
    Method of controlling load on power plant and load control system for carrying out the same 有权
    控制发电厂负荷和负荷控制系统的方法

    公开(公告)号：US06230479B1

    公开(公告)日：2001-05-15

    申请号：US09310937

    申请日：1999-05-13

    申请人： Hideyuki Kawamura ,  Toshihiko Harashima ,  Shoei Takahashi ,  Takeshi Ishida

    发明人： Hideyuki Kawamura ,  Toshihiko Harashima ,  Shoei Takahashi ,  Takeshi Ishida

    IPC分类号： F02C900

    CPC分类号： F02C9/26 ,  F02C9/28 ,  F05D2270/053 ,  F05D2270/112 ,  F05D2270/114 ,  F05D2270/30

    摘要： The invention suppresses the production of thermal stress in power generating equipment and the unstable behavior of the power generating equipment due to the variation of system frequency and stabilizes the system frequency. A power plant load control system controls the operation of a power plant equipped with a gas turbine comprising a combustor (1) and a turbine (3), and a power generator (5) disposed coaxially with the turbine. The power plant load control system comprises a governor load control unit (100) for determining a governor instruction (103d) on the basis of the deviation of generated power (102d) from a power generation instruction (101d) given thereto by a central load dispatching station according to the variation of system frequency, and for determining a fuel supply rate instruction (107d) corresponding to a speed droop ratio (R) according to the deviation of shaft speed (104d) from a governor instruction (103d). The governor load control unit (100) has a fuel supply rate instruction limiter (107) for limiting the change rate of the fuel supply rate instruction (107d). The fuel supply rate instruction limiter (107) determines a limit to the change rate so that the production of thermal stress in the gas turbine and unstable combustion may be suppressed, and limits the variation of the fuel supply rate instruction (107d) to a range below the limit.

    摘要翻译： 本发明抑制发电设备的热应力的产生以及由于系统频率的变化引起的发电设备的不稳定的行为，并使系统频率稳定。 发电厂负荷控制系统控制装备有包括燃烧器（1）和涡轮机（3）的燃气轮机的动力装置的动作以及与涡轮同轴设置的发电机（5）。 发电厂负载控制系统包括调速器负载控制单元（100），用于基于发电功率（102d）与通过中央负载调度给出的发电指令（101d）的偏差确定调速器指令（103d） 根据系统频率的变化，根据轴速度（104d）与调速器指令（103d）的偏差确定与速度下降率（R）对应的燃料供给速度指令（107d）。 调速器负载控制单元（100）具有用于限制燃料供给速度指令（107d）的变化率的燃料供给速度指令限制器（107）。 燃料供给速度指令限制器（107）确定对变化率的限制，从而可以抑制燃气轮机中的热应力的产生和不稳定的燃烧，并且将燃料供给量指令（107d）的变化限制在一定范围内 低于极限。

    Multiplexing control system and multiplexing method therefor
    2.
    发明授权
    Multiplexing control system and multiplexing method therefor 有权
    多路复用控制系统及其复用方法

    公开(公告)号：US07292896B2

    公开(公告)日：2007-11-06

    申请号：US10220468

    申请日：2001-02-26

    申请人： Kazuhiko Miura ,  Shoei Takahashi ,  Kazuyasu Asakura ,  Yoshio Maruyama ,  Katsuhito Shimizu ,  Yukiko Mori ,  Tohru Akatsu

    发明人： Kazuhiko Miura ,  Shoei Takahashi ,  Kazuyasu Asakura ,  Yoshio Maruyama ,  Katsuhito Shimizu ,  Yukiko Mori ,  Tohru Akatsu

    IPC分类号： G05B19/18 ,  G05B19/04

    CPC分类号： G05B9/03 ,  G05B19/4184 ,  G05B2219/2231 ,  G05B2219/24189 ,  G05B2219/25432 ,  G05B2219/31229 ,  Y02P90/14

    摘要： A multiplexing control system has a common process input/output unit for distributing process signals from sensors for measuring the same state variable of a process to digital controllers. One process input/output unit for inputting/outputting a process signal between the multiplexing control system and plant is provided for each process signal. The process input/output unit for the process signal of high importance is triplexed. A process controller having an operating function is provided to each of the triplexed process input/output units. A process input/output unit for the process signal of intermediate importance is diplexed. A process input/output unit for the process signal of low importance is monoplexed. The process signals of the diplexed process input/output units and the monoplexed process input/output unit are controlled by a controller having a master right among the process controllers.

    摘要翻译： 复用控制系统具有用于从用于将过程的相同状态变量测量到数字控制器的传感器分配过程信号的公共过程输入/输出单元。 为每个处理信号提供一个用于在多路复用控制系统和工厂之间输入/输出处理信号的过程输入/输出单元。 高重要性的过程信号的过程输入/输出单元是三重的。 具有操作功能的过程控制器被提供给每个三重过程输入/输出单元。 用于中间重要过程信号的过程输入/输出单元是双工的。 用于低重要性的处理信号的处理输入/输出单元是单相的。 双工过程输入/输出单元和单工序输入/输出单元的过程信号由处理控制器中具有主权的控制器控制。

    Gas turbine control method and apparatus
    4.
    发明授权
    Gas turbine control method and apparatus 失效
    燃气轮机控制方法及装置

    公开(公告)号：US5584171A

    公开(公告)日：1996-12-17

    申请号：US365439

    申请日：1994-12-28

    申请人： Isao Sato ,  Fumiyuki Hirose ,  Minoru Takaba ,  Akira Shimura ,  Shoei Takahashi ,  Hiraku Ikeda

    发明人： Isao Sato ,  Fumiyuki Hirose ,  Minoru Takaba ,  Akira Shimura ,  Shoei Takahashi ,  Hiraku Ikeda

    IPC分类号： F02C9/50

    CPC分类号： F02C9/50 ,  F05D2270/071

    摘要： A gas turbine engine control method and apparatus as disclosed for optimizing fuel/air mixture, especially during decreasing load conditions. In a large capacity gas turbine engine system used for generation of electric power, the system is designed to operate at a relatively constant rotational speed of the turbine which drives an electric generator unit. The load of the turbine engine varies throughout the day due to changes in electrical power demands. During normal rated load conditions, the control of the fuel/air mixture is by way of changes in fuel supply, corrected to return the turbine exhaust temperature to a desired rated temperature. During this mode of operation, the compressor inlet guide vanes are maintained in a substantially constant open position. For accommodating decreasing load conditions where the temperature drops below a predetermined temperature level below the rated temperature operation, the system is switched to an inlet guide vane control mode of operation. During the guide vane control mode of operation, the inlet guide vanes are controlled at a more precise temperature correction sensitivity than is the case for normal load operations. This more precise inlet guide vane control during decreasing load conditions assures improved fuel/air mixture during decreasing load and consequent improved efficiency and minimal NO.sub.x compound emissions, especially during changing ambient temperature conditions where cold air would otherwise increase the air supply.

    摘要翻译： 公开的用于优化燃料/空气混合物的燃气涡轮发动机控制方法和装置，特别是在减小负载条件下。 在用于产生电力的大容量燃气涡轮发动机系统中，该系统设计成以驱动发电机单元的涡轮机的相对恒定的转速运行。 由于电力需求的变化，涡轮发动机的负载在一整天内变化。 在正常的额定负载条件下，燃料/空气混合物的控制是通过燃料供应的变化来进行的，这被校正以将涡轮排气温度恢复到所需的额定温度。 在这种操作模式下，压缩机入口导叶保持在基本恒定的打开位置。 为了适应温度下降到低于额定温度运行的预定温度水平的降低负载条件，系统被切换到入口导叶控制操作模式。 在导叶控制操作模式下，入口导流叶片的控制精度比正常加载操作更为精确。 在降低负载条件下，这种更为精确的入口引导叶片控制确保了在减少负载的同时改善了燃料/空气混合物，从而提高了效率和最小化的NOx化合物排放，特别是在其他空气会增加空气供给的环境温度变化的环境中。