| 摘要 |
An operation control apparatus and an operation control method for a single-shaft combined plant are provided. A clutch is engaged and disengaged, whereby a gas turbine (power generator) is connected to and disconnected from a steam turbine. The opening of IGV is controlled by an opening command, the opening of a burner bypass valve is controlled by another opening command, and the openings of fuel flow control valves are controlled by other opening commands found based on a pilot ratio. The commands to the IGV and the burner bypass valve and the pilot ratio are found during an isolated operation in which only the gas turbine is operated, during a joint operation in which the gas turbine and the steam turbine are both operated, during a transition from the isolated operation to the joint operation, and during a transition from the joint operation to the isolated operation. Thus, the pilot ratio and the fuel-air ratio of the gas turbine are optimized according to the state of operation, so that whether the clutch is disengaged or engaged, the combustion state of the gas turbine is stabilized. |
