POWER GENERATION SYSTEM, AND METHOD FOR OPERATING SAME

摘要

This power generation system is provided with a fuel cell system (101), a gas supply, a controller (102), a combustion device (103), a discharge flow channel (70), a gas flow channel for supplying the discharge flow channel (70) with gas supplied from the gas supply, and a backflow prevention device (20) disposed on the gas flow channel or the discharge flow channel (70). The controller (102) executes control to perform a seize-up avoidance action, causing the gas supply to act in such a way that, when the fuel cell system (101) is halted, or when startup is initiated, the differential pressure between the upstream side and the downstream side of the backflow prevention device (20) is equal to or greater than a predetermined value at which seize-up of the backflow prevention device (20) is eliminated.