초록 ▼

A rapid acting control system for a gas turbine in an electrical system that is adapted to control fuel and air supply to the turbine to prevent flameout condition in the turbine and includes: a turbine control unit having an air supply controller that controls the position of a plurality of turbine

A rapid acting control system for a gas turbine in an electrical system that is adapted to control fuel and air supply to the turbine to prevent flameout condition in the turbine and includes: a turbine control unit having an air supply controller that controls the position of a plurality of turbine inlet guide vanes (IGVs) in correspondence with at least one turbine condition signal; a load rejection module coupled to the air supplier controller and to a turbine electrical load sensor so as to generate a transient IGV correction signal in correspondence with a sensed turbine electrical load drop condition. A method of operating a gas turbine to maintain the turbine on-line during a loss of load condition includes the steps of sensing a loss of load condition for the turbine; supplying an inlet guide vane correction signal into an air supply controller coupled to control the position of a plurality of turbine IGVs, the IGV correction signal being independent of other turbine operating condition signals applied to the air supply controller; and adjusting the position of the plurality of IGVs in response to the IGV correction signal to adjust the turbine fuel air mixture in the gas turbine to prevent flameout during a loss of electrical load condition. The method typically further includes the step of removing the IGV correction signal after a correction time delay.

대표청구항 ▼

[ What is claimed is:] [1.] A rapid acting control system for a gas turbine in an electrical generation system, the control system being adapted for controlling fuel and air supply to the gas turbine over a range of operating conditions, so as to maintain the gas turbine in a non-flameout condition

[ What is claimed is:] [1.] A rapid acting control system for a gas turbine in an electrical generation system, the control system being adapted for controlling fuel and air supply to the gas turbine over a range of operating conditions, so as to maintain the gas turbine in a non-flameout condition even in the event of loss of electrical load, the control system comprising:a turbine control unit coupled to a gas turbine to receive a plurality of respective turbine condition signals, said turbine control unit further being coupled to said gas turbine so as to apply respective regulatory function control signals thereto; said turbine control unit comprising:an air supply controller coupled to an actuator to control position of a plurality of turbine inlet guide vanes (IGVs) in correspondence with at least one of said turbine condition signals;a load rejection module coupled to said air supply controller and coupled to a turbine electrical load sensor so as to generate an IGV correction signal, and to combine said IGV correction signal with a turbine condition signal to produce a modified turbine condition signal, said modified turbine condition signal applied to said air supply controller in correspondence with a sensed turbine electrical load drop condition.