Combined cycle electric power plant with coordinated plural feedback turbine control

Patent · Tue Jan 22 04:00:00 EST 1980

OSTI ID:5404337

Kiscaden, R W; Martz, L F; 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. A plant load demand error signal is utilized for correcting a coordinated gas turbine load reference and for trimming a feedforward afterburner control signal derived from the sensed gas turbine exhaust temperatures.

• Assignee: Westinghouse Electric Corp
• Patent Number(s): US 4184324
• OSTI ID: 5404337
• 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
AFTERBURNERS
ANALOG SYSTEMS
COMBINED-CYCLE POWER PLANTS
CONTROL SYSTEMS
DESIGN
DIGITAL SYSTEMS
ECONOMIZERS
ENERGY RECOVERY
EQUIPMENT
EXHAUST GASES
FEEDBACK
FLUIDS
GAS TURBINES
GASEOUS WASTES
GASES
HEAT RECOVERY
MACHINERY
MONITORING
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
RECOVERY
STEAM TURBINES
SUPERHEATERS
TEMPERATURE MONITORING
THERMAL POWER PLANTS
TURBINES
TURBOMACHINERY
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES