Patent Document ID: 10151213
Application ID: 14660984
Patent Flag: 1

Claim One:
1. A state observer of a steam generator of a thermal power plant, wherein: the state observer is a multi-variable state observer which has a Kalman filter designed for linear-quadratic state feedback; and the state observer is configured to: estimate state and disturbance variables in the steam generator with aid of measurement data derived from input and output variables in the steam generator, at least one of said input and output variables comprising temperature, pressure and enthalpy of a medium entering and leaving a component of said steam generator; simultaneously collect measured state and disturbance variables from data including said input and output variables of the steam generator; compare the measured state and disturbance variables with the estimated state and disturbance variables; and in response to comparing the measured state and disturbance variables to the estimated state and disturbance variables, validate the measured state and disturbance variables based on the comparison, else identify inaccuracies associated with the measured state and disturbance variables; wherein the state observer derives a vector variable control error signal which is delivered to a multi-variable state controller, and wherein manipulated and controlled variables are linked in the multi-variable state controller to one another by the control error signal.