Patent ID: 9297316
Filing Date: 2016-03-29
CPC Classification: F01K,F02C,F05D,F23R,Y02E

Claim Text:
1. A method of for changing power output in a gas turbine system having a compressor, a combustor, and a turbine, comprising: determining an existing power output; determining a desired power output; measuring existing compressor parameters and combustor parameters; calculating a compressor flow rate coefficient for the desired power output; calculating an emission rate for the desired power output; if the compressor flow rate coefficient for the desired power output is less than a predetermined turndown limit, wherein the predetermined turndown limit comprises a minimum value of the flow rate coefficient at which aeromechanical stresses occur in the compressor, then calculating new compressor parameters that result in a new compressor flow rate coefficient above the predetermined turndown limit; if the calculated emission rate is greater than a predetermined emissions limit, then calculating new combustor parameters that result in an emission rate lower than the predetermined emissions limit; changing the power output to the desired power output; changing the compressor parameters to the new compressor parameters; and changing the combustor parameters to the new combustor parameters.