System for determining gas turbine firing and combustion reference temperature having correction for water content in combustion air
AssigneeGeneral Electric Company
InventorsLeroy O. Tomlinson, Robert S. Garry
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Abstract
A system is disclosed for adjusting a gas turbine firing temperature control algorithm and combustion reference temperature algorithms based on exhaust gas temperature, turbine pressure ratio and compressor discharge temperature for water content in the air entering the compressor differing from the design water content of ambient air. The water content in the ambient air is calculated by the control system from measured data from a dry bulb temperature sensor and a wet bulb temperature or humidity sensor.
Claims6
A control system for determining a combustion temperature of a gas turbine having a compressor, combustion section, a water injector in an inlet upstream of the compressor, and a turbine, said system comprising:
- at least one water content sensor in the inlet upstream of the compressor and downstream of the water injector, wherein said sensor is generating data indicative of a variable water content of air entering the compressor,
- a processor executing an algorithm for determining the combustion temperature based in part on the data indicative of the water content, and
- data and program memory storing the data indicative of the water content and the algorithm for execution by the processor wherein said processor generates an output indicative of the determined combustion temperature to control the combustion section.
Dependencies are inferred from the claim text.