| 摘要 |
This invention allows effective resolution of a resonance problem associated with changes in gas generator shaft 18 rotation speed of a twin-shaft gas turbine 1; 31. A twin-shaft gas turbine 1, which has a gas generator 2 including a compressor 7, a combustor 8, and a high-pressure turbine 9, is configured to make a first control mode and a second control mode selectively useable for control of the gas generator 2. In addition, in the first control mode, an IGV angle in the compressor 7 is controlled in accordance with a corrected shaft rotation speed of the gas generator 2, and in the second control mode, the IGV angle is controlled to maintain a constant gas generator shaft 18 rotation speed. Furthermore, the first control mode is used to start, to stop, and to operate the turbine under fixed or lower load conditions, and that the second control mode is used under operational states other than those to which the first control mode is applied. |
