Method and device for regulating the temperature of steam for a steam power plant

摘要

The method involves outputting a desired steam temperature (theta nks) as a controlled variable temperature by a state controller (46), where the state controller is a linear-quadratic-Gaussian controller (30). Several steam states are fed back in a superheater for superheating steam using a monitor (42) i.e. Kaiman-filter, that calculates the steam states. The desired steam temperature is forwarded to a controller for controlling the temperature. A disturbance variable defines heat as a state and is used in a control algorithm. An independent claim is also included for a device for controlling temperature of steam in a steam power plant.