Combined cycle electric power plant with feedforward afterburner temperature setpoint control

Patent · Tue Jun 08 04:00:00 EDT 1982

OSTI ID:6199139

Uram, R

A combined cycle electric power plant includes gas and steam turbines and a steam generator for recovering the heat in the exhaust gases exited from the gas turbine and for using the recovered heat to produce and supply steam to the steam turbine. The steam generator includes a superheater tube through which a fluid, e.g. water, is directed to be additionally heated into superheated steam by the exhaust gas turbine gases. An afterburner further heats the exhaust gas turbine gases passed to the superheater tube. The temperature of the gas turbine exhaust gases is sensed for varying the fuel flow to the afterburner by a fuel valve, whereby the temperatures of the gas turbine exhaust gases and therefore of the superheated steam, are controlled. The afterburner fuel flow is controlled through a feedforward setpoint signal derived as a predetermined function of sensed gas turbine exhaust temperature.

• Assignee: Westinghouse Electric Corp
• Patent Number(s): US 4333310
• OSTI ID: 6199139
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200102* -- Fossil-Fueled Power Plants-- Power Cycles
200105 -- Fossil-Fueled Power Plants-- Heat Utilization
COMBINED CYCLES
CONTROL SYSTEMS
DIGITAL SYSTEMS
ELECTRIC POWER
ENERGY RECOVERY
EXHAUST GASES
FLUIDS
GAS TURBINES
GASEOUS WASTES
GASES
HEAT RECOVERY
MACHINERY
POWER
POWER PLANTS
RECOVERY
STEAM TURBINES
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY
WASTES