| 摘要 |
PURPOSE:To make a constant speed adjusting rate for entire range of load and improve a characteristic of control for turbine by a method wherein a gain of a speed difference amplifier is corrected by a load signal in a turbine control device. CONSTITUTION:An output from a function generater 1 for generating a pseudo signal corresponding to an actual measured characteristic of a turbine load vs. a speed adjuster rate is fed to a multiplier 2, a request signal for a degree of opening of inlet valve for the turbine composed of a load requesting signal and a speed difference signal is corrected in response to the load, fed to an amplifier 3 and an inlet valve driving amplifier 4. A degree of opening of the valve is fed back to the amplifier 4 by a sensor for a degree of opening of the inlet valve and then an opening or closing of the inlet valve is controlled. Since it is possible to make a constant speed adjuster rate over an entire load range, a characteristic of control for a variation of frequency in a turbine generater can be improved. |
