Siemens Aktiengesellschaft

Michael Treuer

Klaus Wendelberger

Bernhard Meerbeck

Annette Barenbrügge

Lutz Hanel

Fabian Bargiel

Joachim Rupp

Jörg Gadinger

Tobias Weissbach

Christoph Backi

A device for closed-loop control of a plurality of state variables of a steam generator of a thermal power plant is provided. In order to achieve stable and exact closed-loop control of the plurality of state variables, a multi-variable control/controller controls the plurality of state variables and uses a linear quadratic controller for this multi-variable control/controller.

Multi-variable state closed-loop control for a steam generator of a thermal power plant

A state observer for a steam generator of a thermal power plant is provided. Accordingly, provision is made for the state observer to be a multi-variable state observer which has a Kalman filter designed for linear-quadratic state feedback. The state observer can be used for validating measured variables of the steam generator of the thermal power plant, wherein measured variables of the steam generator are compared with output variables of the state observer.

State observer for a steam generator of a thermal power plant

A method for controlling the temperatures of steam for a steam power plant is provided. A state controller, in order to output a desired steam temperature as a controlled variable, feeds back several steam states in a superheater for superheating steam using a monitor, which calculates the steam states, and the desired steam temperature is forwarded to a further controller for controlling the temperature. In order to achieve a stable and accurate control of the steam temperature, it is proposed that the state controller be a linear quadratic controller.

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

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Lorch, Germany

Michael Treuer