Patent ID: 8707709
Filing Date: 2014-04-29
Classification: F01D,F02C,F05D

Abstract:
1. A method for controlling compressor extraction cooling in a gas turbine comprising a compressor and a turbine section, the method comprising: providing a plurality of different cooling mediums; extracting air from a compressor associated with a gas turbine; injecting the different cooling mediums into the compressor extraction air, wherein the compressor extraction air is cooled by the cooling mediums prior to or during introduction to the turbine section; determining, after injection of the different cooling mediums, an expected temperature of the compressor extraction air and a measured temperature of the compressor extraction air; adjusting, based at least in part on a temperature difference between the expected temperature and the measured temperature, respective amounts of the cooling mediums injected into the compressor extraction air; and selectively controlling at least one of the compressor extraction air or the cooling mediums based at least in part on a characteristic associated with the gas turbine.