CONTROL DEVICE AND CONTROL METHOD

The present invention relates to a control apparatus and a control method. The control apparatus lets a thermal power plant provided with a turbine bypass valve for regulating an amount of steam bypassing a steam turbine driven by the steam from a boiler be a control target. The control apparatus co...

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Bibliographische Detailangaben
Hauptverfasser:	TOBO MAKOTO, SANDA HISASHI, TAKETOMO TAKAHIRO, DOMOTO KAZUHIRO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a control apparatus and a control method. The control apparatus lets a thermal power plant provided with a turbine bypass valve for regulating an amount of steam bypassing a steam turbine driven by the steam from a boiler be a control target. The control apparatus controls the boiler based on a boiler input command value, while controlling the turbine bypass valve based on a turbine bypass valve opening command value. The turbine bypass valve opening command value is generated based on an AFC signal in an AFC compatible mode of the thermal power plant. The boiler input command value is generated by adding a bias value with a positive sign to a base input value based on a load command value for a thermal power plant in the AFC compatible mode. The control apparatus of the present invention comprises: a turbine bypass valve opening command value generating unit; a turbine bypass valve controlling unit; a boiler input command value generating unit; and a boiler controlling unit. 제어 장치는, 보일러로부터의 증기에 의해 구동되는 증기 터빈을 바이패스하는 증기량을 조절하기 위한 터빈 바이패스 밸브를 구비하는 화력 플랜트를 제어 대상으로 한다. 제어 장치는, 터빈 바이패스 밸브 개방도 지령값에 기초하여 터빈 바이패스 밸브를 제어함과 함께, 보일러 입력 지령값에 기초하여 상기 보일러를 제어한다. 터빈 바이패스 밸브 개방도 지령값은, 화력 플랜트의 AFC 대응 모드에 있어서, AFC 신호에 기초하여 생성된다. 보일러 입력 지령값은, AFC 대응 모드에 있어서, 화력 플랜트에 대한 부하 지령값에 기초하는 베이스 입력값에 대하여 정 부호의 바이어스값을 가산함으로써 생성된다.