UNIAXIAL GAS TURBINE SYSTEM

The uniaxial gas turbine system of the present invention has a uniaxial gas turbine, a rotary machine driven by the uniaxial gas turbine, a continuously variable speed transmission of transmitting a drive force from the uniaxial gas turbine to the rotary machine, and a controller of controlling a revolution speed of the uniaxial gas turbine to an optimal revolution speed and controlling a speed variation ratio of the continuously variable speed transmission so as to set a revolution speed of the rotary machine to a desired revolution speed. According to load changes of the rotary machine driven by the gas turbine, the revolution speed of the gas turbine or the rotary machine can be optimized.