| 摘要 |
PURPOSE:To execute a stable control by a method wherein demand signals at each operating terminal are computed on the basis of fuel flow demand signals of a boiler or boilers for a heat power plant and each operating terminal is operated on the basis of these demand signals. CONSTITUTION:At the forward stags of proportional integrators 202, 207,...209 which operate fuel flow regulating valves CV1-6 by computing operational signals are provided adders 205,...227 which sum up fuel flow demand signals FRD of a boiler or boilers for a heat power plant, demand signals at each operating terminal are computed on the basis of demand signals FRD and each operating terminal is fed forward on the basis of these demand signals. In this method, since operating quantity on the upward stream side is reduced in synchonization with change of an output terminal when a rapid load is shut, occurrence of surge and fluctuation of controlled variable are prevented and stable control is possible. |
