Heat Recovery Steam Generation System and Method for Controlling a Water Level of a Drum in a Heat Recovery Steam Generation System for a Combined Cycle Power Plant

摘要

A method for controlling a water level of a drum (34) of a heat recovery steam generation system (12) for a combined cycle power plant (10) is provided. The method includes determining an optimum drum water level during start up operation of the heat recovery steam generation system (12) based on a characteristic chart model (100). The characteristic chart model (100) is generated based on a plurality of vapor pressures of the drum (34) and a plurality of temperatures of drum metal at the time of the start up operation of the heat recovery steam generation system (12).