Gas-steam combined cycle unit steam temperature control method and device

The invention discloses a gas-steam combined cycle unit steam temperature control method and device. The method comprises: determining a steam temperature control target value according to a preset steam temperature set value and an obtained temperature after a desuperheater; obtaining a steam tempe...

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Bibliographische Detailangaben
Hauptverfasser:	QIN TIANMU, CHEN ZHENSHAN, LI WEIHUA, SHANG YONG, LI ZHAN, YOU MO, GAO MINGSHUAI, GAO AIGUO, ZHANG HONGXIA, LIU LEI, XING ZHIWEI, ZHANG JINZHE, YANG ZHENYONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING STEAM GENERATION SUPERHEATING OF STEAM WEAPONS
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Beschreibung
Zusammenfassung:	The invention discloses a gas-steam combined cycle unit steam temperature control method and device. The method comprises: determining a steam temperature control target value according to a preset steam temperature set value and an obtained temperature after a desuperheater; obtaining a steam temperature actual value and a gas turbine unit load, and determining a PID controller input value according to the steam temperature actual value and a steam temperature control target value; determining steam temperature actual value differential feedforward, gas turbine unit load differential feedforward and gas turbine unit load feedforward according to the steam temperature actual value and the gas turbine unit load; and inputting the PID controller input value into the PID controller, and obtaining a desuperheating water valve opening degree instruction according to the steam temperature actual value differential feedforward, the gas turbine unit load differential feedforward and the gas turbine unit load feedforw