Patent application number | Description | Published |
20100268500 | METHOD AND DEVICE FOR THE IDENTIFICATION OF A DELAY-SUSCEPTIBLE CONTROL PATH, CONTROL DEVICE AND COMPUTER PROGRAM PRODUCT - 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. | 10-21-2010 |
20100280784 | Method for monitoring the quality of a control circuit in a power plant - A method of monitoring quality of a control circuit in a power plant is provided. The quality of the control circuit is continuously assessed by determining characteristic quantities describing the quality by applying a plurality of testing methods suitable for describing dynamic properties of the control circuit to current operating data originating from the instrumentation and control equipment of the power plant, and by evaluating the characteristic quantities. Further, a system and a computer readable medium are provided. | 11-04-2010 |
20110160926 | Method for the installation control in a power plant - 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. | 06-30-2011 |
20120125003 | Method for controlling a combustion process, in particular in a firing chamber of a fossil-fuel-fired steam generator, and combustion system - 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. | 05-24-2012 |
20130133751 | Method and device for regulating the production of steam in a steam plant - 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. | 05-30-2013 |
20130346460 | METHOD AND DEVICE FOR FILTERING A SIGNAL AND CONTROL DEVICE FOR A PROCESS - 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. | 12-26-2013 |
20140039656 | AUTOMATED PLANNING OF CONTROL EQUIPMENT OF A TECHNICAL SYSTEM - A method of producing a specific planning document for control equipment to be planned for a technical system, in particular for power plant control equipment to be planned for a power plant, and to a device designed to carry out the method are provided. A specific description of a technical system is created. Using the specific description, planning objects are selected from an archive having specified planning objects. Then the selected planning objects are adapted to the system using the specific description, wherein the specific planning document is formed from the adapted or specific planning objects. | 02-06-2014 |
20140156092 | AUTOMATED ADAPTATION OF A POWER PLANT CONTROL - 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. | 06-05-2014 |
20140309798 | METHOD AND DEVICE FOR CONTROLLING A TEMPERATURE OF STEAM FOR A STEAM POWER PLANT - A method for controlling a temperature of steam for a steam power plant is provided. A state regulator controls the temperature of the steam at an outlet of a superheater using a feedback of multiple medium states of the steam in the superheater. An aim herein is to achieve a stable and precise control of the steam temperature. This is achieved in that the state regulator is a linear regulator, the feedback matrix of which is ascertained such that the regulator has the control quality of a linear-quadratic regulator. | 10-16-2014 |
20140358817 | AUTOMATED PROJECT DESIGN OF A CONTROL TECHNOLOGY FOR A TECHNICAL SYSTEM - A method for producing a system-specific project design document for control technology to be project-designed for a technical system as well as a device designed for the implementation of the method is provided. A reference project design document for the technical system is produced. Through a comparison of a project-specific project design document for the technical system the reference project design document, performed using a comparison marking, wherein the project-specific project design document is created using standard project design objects, the system-specific project document is created. | 12-04-2014 |
20150019524 | ASSIGNMENT OF DESIGNATIONS FOR MEASUREMENT SIGNALS AND DEVICES FROM A FIRST IDENTIFICATION SYSTEM TO A SECOND IDENTIFICATION SYSTEM WITHIN PROJECT PLANNING FOR A TECHNICAL INSTALLATION - A method and device for assigning measurement signal and device designations from a first to a second classification system within a projection of a technical system is provided. The process is implemented in an automated manner by a search engine. A measurement signal or device designation from the first classification system is entered into the search engine and converted into a search query. The text elements of the search query are processed, wherein text elements are semantically analyzed using terminology and compared with those of a list which contains all the designations from the second classification system. The text elements from the list which best match those of the search query are evaluated with respect to relevance and outputted as search results of the search engine. The search result with the maximum relevance corresponds to the designation from the second classification system and replaces designation from the first classification system. | 01-15-2015 |