Patent ID: 11933197
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 6:
7. The method for starting up a combined cycle plant according to claim 1, the method further comprising:
a thermal stress detection step of detecting whether the thermal stress has reached a stable state in which an amount of change per unit time of the thermal stress estimated in the thermal stress estimation step is smaller than a predetermined amount of change and the thermal stress is smaller than the predetermined first thermal stress; and
a steam pressure control step of, after the ST generator output control step is completed by detecting that the thermal stress has reached the stable state in the thermal stress detection step, controlling the pressure of the steam flowing into the steam turbine so that the pressure of the steam flowing into the steam turbine is maintained within a predetermined range.