POWER PLANT EQUIPMENT, SHIP INCLUDING THE SAME, AND METHOD FOR OPERATING POWER PLANT EQUIPMENT

Provided is power plant equipment that is highly responsive to fluctuations in system power demand and that is capable of optimizing the fuel economy of diesel engines. The power plant equipment includes a main diesel engine (1); a supercharger (2); a bled-gas bypass pipe (8) through which a portion of exhaust gas from the main diesel engine (1) bypasses the supercharger (2); a bled-gas bypass valve (9) that is disposed in the bled-gas bypass pipe (8) and that adjusts the amount of bypassing exhaust gas; an exhaust gas economizer (3) that produces steam by recovering exhaust heat from the exhaust gas; a steam turbine (5) that is driven by the steam produced by the exhaust gas economizer (3); a generator (7) that generates electricity using a driving force produced by the steam turbine (5) and that supplies the resulting electrical power to an onboard system (34); and a controller (10) that adjusts the degree of opening of the bled-gas bypass valve (9) depending on the pressure of the superheated steam supplied from the exhaust gas economizer (3) to the steam turbine (5).