Gas-steam combined cycle unit load flexible regulation device and method

By recovering waste heat from flue gas to drive a refrigeration unit to cool the gas turbine intake, combined with real-time temperature control and safety constraints, the problem of output reduction in gas-steam combined cycle units during high temperatures in summer has been solved. This has enabled efficient and safe load regulation and waste heat utilization, thereby improving the unit's power generation capacity and operational stability.

CN122190909APending Publication Date: 2026-06-12BEIJING JINGNENG GAOANTUN GAS THERMAL POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING JINGNENG GAOANTUN GAS THERMAL POWER CO LTD
Filing Date
2026-04-30
Publication Date
2026-06-12

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Abstract

The present application relates to the field of gas turbine and combined cycle power generation technology, and discloses a kind of gas-steam combined cycle unit load flexible regulation and control device and method, the device includes gas turbine, steam turbine, waste heat boiler system and intake cooling module.Inlet cooling module contains flue gas waste heat plate heat exchanger, refrigerating unit and liquid-cooled air cooler: flue gas waste heat plate heat exchanger is connected in the low-temperature flue of waste heat boiler system tail portion;The generator heat source inlet of refrigerating unit is connected with the hot medium outlet of flue gas waste heat plate heat exchanger;Liquid-cooled air cooler is arranged in the compressor inlet duct of gas turbine, and its cold water side inlet is connected with the evaporator cold water outlet of refrigerating unit through pipeline, to form closed cold water circulation loop.The present application drives refrigeration by recycling flue gas waste heat, realizes energy cascade utilization, can significantly offset the unit output attenuation caused by high temperature in summer, improves the peak power generation capacity of unit and power grid peak shaving guarantee level.
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