| 摘要 |
PURPOSE:To increase the stability of a control sytem by a method wherein a speed change component is fed-back to a speed variation detecting part only during no load running in the electric speed governing device of a turbine. CONSTITUTION:A signal sent from a rate-of-speed change detector (e) is inputted through a contact (g) to a variation detector (b) to show the deviation between the signal from a speed detector A and the signal from a speed setter (a) in the electric speed governing device of a turbine 1 to drive a generator. A control circuit (f) closes the contact (g) during the speed rising period of the turbine and the synchronous running of the generator connected to a power system, while opens the contact (g) during no load running of the turbine. Thus, the damping effect can be given to the whole control system during no load, resulting in enabling to stabilize the control system. |
