SYSTEM AND METHOD FOR OPERATING A GAS TURBINE

摘要

A system and method for operating a gas turbine include a controller that determines, for at least one combustion instability, a frequency; a quantification of the frequency or a quantification of the frequency through time; and, optionally, a phase and/or an amplitude. The logic also causes the controller to compare the frequency, the quantification of the frequency or the quantification of the frequency through time, the phase, and/or the amplitude of the at least one combustion instability to an associated predetermined limit. When the frequency is actionable relative to its predetermined limit and one of the quantification of the frequency or the quantification of the frequency through time is actionable relative to its respective predetermined limit, at least one parameter of the gas turbine is adjusted. The quantification of the frequency is one of the standard deviation, the coefficient of variation, the index of dispersion, and the variance.

主权项

1. A system for operating a gas turbine, the system comprising:
a. a compressor section configured to receive a working fluid and to produce a compressed working fluid; b. a plurality of combustors downstream from the compressor section, each combustor comprising a fuel injector, the fuel injector receiving fuel at a fuel temperature and a fuel flow rate; and c. a controller configured to execute logic stored in a memory, the logic causing the controller:
i. to determine a frequency of a combustion instability and at least one quantification of the frequency of the combustion instability;ii. to compare the frequency of the combustion instability to a predetermined frequency limit and the at least one quantification of the frequency of the combustion instability to a respective predetermined quantification limit; andiii. to adjust at least one parameter of the gas turbine if the frequency of the combustion instability is actionable relative to the predetermined frequency limit and the at least one quantification of the frequency of the combustion instability is actionable relative to its respective predetermined quantification limit.