摘要:
An automatic adaptation of a control of a technical system, in particular of a power plant, is provided. Control circuits are created for controlling the technical system, wherein at least one control circuit and a second control circuit are coupled using a decoupling member. The decoupling member has at least one adaptable parameter. The at least one adaptable parameter of the decoupling member is automatically adapted in an online operation of the technical system to an actual, dynamic process behavior of the technical system, i.e., automatic online adaptation.
摘要:
A method for controlling a combustion process, in particular in a firing chamber of a fossil-fired steam generator, is provided. The method includes determining spatially resolved measuring values in the firing chamber. Spatially resolved measuring values are transformed into state variables that may be used for control engineering, and they are subsequently fed as actual values to control circuits. The changes in the controlled variables determined in the control circuits are divided among a plurality of actuators in a backward transformation considering an optimization target. A corresponding combustion system is also provided.
摘要:
A method for filtering a signal is proposed. A noisy input signal is continuously examined in order to determine whether the input signal it is within or outside a deadband. The deadband width and the zero point of the deadband are continuously adapted to the noise power of the input signal depending on the time behavior of the input signal and a predefined system time constant. At least one filtered output signal is continuously output, such as a deadband signal, which substantially corresponds to a smoothed input signal.
摘要:
A method for the installation control in a power plant is provided. A functional value of a target function based on a physical model is generated for a plurality of sets of variables, from respectively a set of environment variable and the respective set of variables, the functional value is allocated to the respective sets. The set of variables is selected to be transmitted to a control device of the power plant, whose allocated functional value complies with a predefined optimization criterion. In addition to a starting set and a set determined on the basis of the starting set and the functional value allocated thereto using a gradient method, the number of sets of variables further includes a set selected by a random generator. In addition, a control apparatus for a power plant using the method and a power plant using the control apparatus are provided.
摘要:
A method for regulating the production of steam from feed water in an evaporator of a steam plant is provided. A state regulator calculates a plurality of states of a medium in the evaporator by means of an observer and, on the basis thereof, determines a feed water mass flow rate as a regulating variable. In order to obtain a stable and precise regulation of the temperature of the steam, the state regulator is a linear-quadratic regulator.
摘要:
A method for controlling a combustion process, in particular in a firing chamber of a fossil-fired steam generator, is provided. The method includes determining spatially resolved measuring values in the firing chamber. Spatially resolved measuring values are transformed into state variables that may be used for control engineering, and they are subsequently fed as actual values to control circuits. The changes in the controlled variables determined in the control circuits are divided among a plurality of actuators in a backward transformation considering an optimization target. A corresponding combustion system is also provided.
摘要:
A method for identifying a delay-susceptible control path in the control of a steam generator and a device constructed for carrying out the method are provided. A model structure of the steam generator is specified, consisting of an unknown time-variable Nth-order delay element and a known integrator. Also used for the identification are measurements of the fuel mass flow, the turbine stream mass flow, and the live stream pressure which arises in the steam accumulator behind the steam generator after the removal of the turbine steam mass flow. Using these online measurements and the model structure, the live steam mass flow at the output of the steam generator is derived by calculation. In this way, the input value and the output value of the Nth-order delay element are determined and, using an estimation method, the parameters of a continuous transmission function of the Nth-order delay element are also determined online.
摘要:
An automatic adaptation of a control of a technical system, in particular of a power plant, is provided. Control circuits are created for controlling the technical system, wherein at least one control circuit and a second control circuit are coupled using a decoupling member. The decoupling member has at least one adaptable parameter. The at least one adaptable parameter of the decoupling member is automatically adapted in an online operation of the technical system to an actual, dynamic process behavior of the technical system, i.e., automatic online adaptation.
摘要:
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.
摘要:
A method for the installation control in a power plant is provided. A functional value of a target function based on a physical model is generated for a plurality of sets of variables, from respectively a set of environment variable and the respective set of variables, the functional value is allocated to the respective sets. The set of variables is selected to be transmitted to a control device of the power plant, whose allocated functional value complies with a predefined optimization criterion. In addition to a starting set and a set determined on the basis of the starting set and the functional value allocated thereto using a gradient method, the number of sets of variables further includes a set selected by a random generator. In addition, a control apparatus for a power plant using the method and a power plant using the control apparatus are provided.