GAS TURBINE CONTROL DEVICE AND COGENERATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a gas turbine control device capable of making the most of peak power generation capacity originally provided on a gas turbine facility for peak load of power demand. SOLUTION: This gas turbine control device 40 to be used for a cogeneration system for obtaining exhaust heat recovering steam by exhaust gas of the gas turbine 10 and performing power generation by shaft power of the gas turbine 10 is provided with a turbine capacity switching part 42 for switching a base mode and a heavy load mode for increasing a power generation output of the gas turbine 10 more than the base mode, and a maintenance parts service life control part 44 for determining whether or not an operation maintenance period can be secured for a prescribed period fixed from an exchange time when an operation is performed by the heavy load mode calculated by accumulated load of the maintenance parts of the gas turbine 10. When the existence of a required service life is determining by the maintenance parts service life control part 44, the mode is switched to the heavy load mode by the turbine capacity switching part 42.