LOAD CONTROL METHOD FOR COMPOSITE POWER GENERATING PLANT AND DEVICE THEREFOR

PURPOSE:To economically control the number of gas turbines to be operated at high efficiency by conducting a plant load lowering operation to a target load of a plant with all of the gas turbines when the plant load is decreased, and maintaining the target load with the required gas turbines after t...

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO TSUGIO, SAITO SHUJI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To economically control the number of gas turbines to be operated at high efficiency by conducting a plant load lowering operation to a target load of a plant with all of the gas turbines when the plant load is decreased, and maintaining the target load with the required gas turbines after the target load is achieved. CONSTITUTION:In a composite power generating plant, a plurality of gas turbines 3a-3c are disposed in parallel. Exhaust heat of the gas turbines 3a-3c is recovered in exhaust heat recovery boilers 5a-5c, respectively. One steam turbine 6 is driven by steam generated by heating in the recovery boilers 5a-5c. The three gas turbines 3a-3c drop load until a plant load becomes 50%. When the plant load becomes 50%, the gas turbine 3a further drops the load, to be stopped. The residual gas turbines 3b, 3c perform operation for maintaining the plant load at 50%.