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

摘要

The invention relates to a method for controlling the temperature of steam (8) for a steam power plant (2), wherein a state controller (46), in order to output a desired steam temperature (ϑ) as a controlled variable, feeds back several steam states in a superheater (6) for superheating steam (8) using a monitor (42), which calculates said states, and the desired steam temperature (ϑ) is forwarded to a further controller (32) for controlling the temperature. In order to achieve a stable and accurate control of the steam temperature, it is proposed that the state controller (46) be a linear quadratic controller.