Patent ID: 9140192
Filing Date: 2015-09-22
Classification: F01D,F01K,F02C

Abstract:
1. A method of controlling a startup of a steam turbine receiving steam from a steam generator and having a rotor linked to a power generator and a steam turbine controller controlling at least the position of a steam inlet valve located in a steam conduit between the steam generator and the steam turbine to control the mass flow into the steam turbine, the method comprising: selecting, before beginning of the startup, a predefined set of startup sequences of setpoints based on a status of the steam turbine at the beginning of the startup and/or a startup mode chosen by the operator wherein the set of startup sequences of setpoints includes parameters not controlled by the steam turbine controller and parameters controlled by the steam turbine controller; using the steam turbine controller to control the parameters controlled by the steam turbine controller so as to progress the steam turbine from setpoint to setpoint in accordance with the predefined set of startup sequences until reaching a release point, wherein each release point is associated with a respective setpoint and indicates a time at which the steam turbine is expected to reach the respective setpoint; and delaying, at the release point, moving to the next setpoint until actual/measured setpoint values agree with predefined setpoint values at the release point for the parameters not controlled by the steam turbine controller.