Patent ID: 7712299
Filing Date: 2010-05-11
Classification: F04D,F25J,Y02B

Abstract:
1. A process for controlling a system employing a gas turbine to drive a first compressor, wherein said first compressor is operable to increase the pressure of a first working fluid, said process comprising: (a) sensing the rotational speed of said turbine; (b) sensing the load of said first compressor; (c) adjusting flow of said first working fluid into said first compressor based at least in part on the rotational speed of said turbine and the load of said first compressor; and (d) initiating overfiring of said turbine based at least in part on the rotational speed of said turbine, wherein said overfiring is initiated when the rotational speed of said turbine falls below a minimum acceptable turbine speed and said adjusting of step (c) is ineffective to increase the rotational speed of said turbine back to said minimum acceptable turbine speed.