EP1982051A1 - Procédé et dispositif permettant d'anticiper la répartition de température dans une paroi d'une installation de turbines - Google Patents

Procédé et dispositif permettant d'anticiper la répartition de température dans une paroi d'une installation de turbines

Info

Publication number
EP1982051A1
EP1982051A1 EP06841487A EP06841487A EP1982051A1 EP 1982051 A1 EP1982051 A1 EP 1982051A1 EP 06841487 A EP06841487 A EP 06841487A EP 06841487 A EP06841487 A EP 06841487A EP 1982051 A1 EP1982051 A1 EP 1982051A1
Authority
EP
European Patent Office
Prior art keywords
wall
determined
temperature
turbine
individual layers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06841487A
Other languages
German (de)
English (en)
Inventor
Eckart Brackenhammer
Kilian Link
Oldrich Zaviska
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1982051A1 publication Critical patent/EP1982051A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
    • F01D19/02—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith dependent on temperature of component parts, e.g. of turbine-casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/40—Type of control system
    • F05D2270/44—Type of control system active, predictive, or anticipative

Definitions

  • the present invention relates to a method and an apparatus for predictively determining a temperature distribution in a wall of a turbine plant.
  • Such a turbine system has u. a. one or more gas and / or steam turbines with a working medium, d. H. Gas or steam, operated.
  • the turbines may be coupled to a generator for power generation.
  • the guided by the working fluid heat enters walls of components of the turbine system, which come directly or indirectly into contact with the working fluid.
  • Such component walls may be, for example, turbine housings and shafts, pipelines and valve housings, etc.
  • Temperature changes of the working medium are connected. These temperature changes of the working medium are transferred into the component walls due to the heat flow. In the component walls, the temperature changes sometimes cause high transient thermal stresses that cause damage, or at least excessive force
  • the object of the present invention is to make it possible to limit the loading of components of a turbine installation by temperature changes occurring in transient operating modes of the turbine installation. This object is achieved by the technical teaching of claim 1 or claim 10.
  • a predictive determination of a temperature distribution takes place in a wall of a turbine installation.
  • the wall is divided into several layers, wherein for the respective layer, a same temperature is assumed.
  • a continuous determination of actual temperatures of the individual layers of the wall is carried out as a function of a currently determined temperature of a heat-conducting medium adjoining the first wall layer.
  • the predictive determination of the temperatures of the individual layers is carried out cyclically over a predetermined time range. At the beginning of each cycle, the continuously determined current temperatures of the individual layers are taken into account.
  • the determinations of the temperatures are advantageously made on the basis of a mathematical model of the wall. Furthermore, the temperature determinations are made on the basis of mathematical models of the heating and cooling processes. For a single wall, the same temperature is assumed. In particular, this temperature represents an average temperature of the respective layer. The actual temperature of the warming medium adjoining the first wall layer can in particular be measured. As a result, a particularly accurate initial value of this temperature can advantageously be obtained.
  • a prognosis for a future development of the temperatures in the various layers of the wall of the turbine installation is determined.
  • a predictive estimate of changes in the temperature distributions in the wall is made possible.
  • it is advantageously known at each operating point of the turbine system whether an intended mode of operation of the turbine system becomes one Violation of predetermined temperature allowance limits of the turbine system or one of its components can lead. These allowable limits allow the temperature to be varied below the limits without fear of excessive stress on the wall due to stresses which could possibly lead to a deterioration of the service life of the wall.
  • the anticipated temperatures may further allow for estimation of technical and / or economic consequences of non-compliance with the temperature cut-off limits.
  • the predictive determination of the temperature distribution can be carried out for any geometry of the wall.
  • the invention advantageously ensures a particularly good stability of the determination of the temperature distribution. This is achieved in particular by dividing the wall into the several layers.
  • the cyclical determination of the temperature distribution prevents accumulation of a possible integration error, which can occur over a long time interval in the determination.
  • the use according to the invention of the two-module structure with real-time and advance-scan module ensures that the actual temperature distribution in the wall is used as start-up values each time the predictive determination is restarted by means of the look-ahead module. This actual temperature distribution in the wall is continuously determined in the real-time module so that the look-ahead module can access the actual temperature distribution at the beginning of a new cycle.
  • heat flows entering the individual layers of the wall and heat flows emerging from the individual layers are determined.
  • the predictive determination of the temperature distribution is then carried out by means of these heat flows.
  • the determination of the temperatures of the individual layers is thus based on a balancing of the instationary incoming and outgoing heat flows. From this accounting result the respective temperatures of the individual layers of the wall. As a result, the determination of the temperature distribution can be carried out particularly accurately.
  • a mass flow of the heat-conducting medium is determined in the pre-expansion module, which is required to achieve a predetermined criterion.
  • the predetermined criterion can in particular be specified by a higher-level control device. By the given criterion, the behavior of the turbine system can be controlled.
  • the predetermined criterion comprises a specification of a time within which a speed of a turbine of the turbine system is to be changed from a current speed to a predetermined, different speed.
  • the predetermined criterion may alternatively or additionally include a specification of a rate of change for varying the speed of the turbine.
  • Turbine system can be controlled from a Anwarmwindiere to a rated speed. During this start-up process, particularly high temperature changes of the working medium occur, so that the wall is subjected to particularly high loads.
  • the predetermined criterion includes a specification of a time within which the turbine of the turbine system is to be loaded.
  • the predetermined criterion may alternatively or additionally be a specification of a rate of change for changing the power of the
  • the latter corresponds to the specification of a load gradient.
  • an average integral temperature is determined by means of the anticipated determined temperatures of the individual layers.
  • the temperature distribution is determined in a housing of a high-pressure steam turbine.
  • a high-pressure steam turbine usually has particularly large wall thicknesses and is therefore particularly costly.
  • the predictive determination of the temperature distribution in this component is therefore particularly advantageous for the cost-optimized operation of the turbine plant.
  • a heating or cooling of a working medium of the turbine installation is particularly preferably carried out as a function of the predictive determination of the temperature distribution.
  • An optimal control or regulation of the instationary operating modes of the turbine system with respect to the heating and cooling of the working medium is particularly suitable for avoiding loads on the wall or at least limiting it in such a way that the exceeding of the prescribed free allowable limits is prevented.
  • the inventive device can be advantageously connected to a host computer for controlling the turbine system be. This master computer controls the transient operating modes based on the inventive predictive determination of the temperature distribution in one or more walls of the turbine system.
  • FIG. 1 is a schematic representation of a turbine plant according to the invention
  • FIG. 2 is a schematic representation of a lookahead computer according to the invention
  • FIG. 3 shows a schematic illustration of a section of a turbine housing wall which is subdivided into several layers
  • Fig. 5 is a schematic block diagram for calculating a vapor mass flow at startup of a
  • FIG. 6 is a schematic block diagram for calculating the
  • FIG. 8 is a schematic block diagram of a module for calculating a heat transfer coefficient.
  • 9 is a schematic block diagram of a module for predictively calculating a temperature of a first layer of the turbine housing wall.
  • FIG. 10 is a schematic block diagram of a module for predictively calculating a temperature of a layer located between the first and a last layers of the turbine housing wall.
  • Fig. 11 is a schematic block diagram of a module for predictively calculating a temperature of the last layer of the turbine housing wall
  • Fig. 12 is a schematic block diagram of a module for predictively calculating a mean integral temperature.
  • Fig. 1 shows a schematic representation of a turbine plant according to the invention.
  • the turbine plant here is a steam turbine plant 1, which comprises a multi-stage steam turbine 2 and a generator 3, which is driven by the steam turbine.
  • the steam turbine 2 has a high-pressure part 2a and a low-pressure part 2b.
  • the low pressure part 2b is connected on the input side via a steam line 4 to the high pressure part 2a. He is also the output side, that is connected on the exhaust steam side, via an exhaust steam line 5 with a capacitor 6.
  • In an inlet 7 of the high-pressure part 2a opens a live steam line 8.
  • the high-pressure part 2a is provided with a withdrawal line 9 and with a tapping line 10, can be removed from the steam of different stages of the steam turbine 2 each.
  • the turbine installation 1 has various measuring points which reproduce boundary conditions or operating parameters as measured values. So can be used as operating parameters Pressure and a temperature of the steam, which serves as a working medium, and a quantity of steam at the various measuring points are measured. 1 shows a representative of the various measuring points a measuring point 11 on the exhaust steam line 5, a measuring point 12 at the extraction line 9 and a measuring point 13 at the tap line 10. Furthermore, a measuring point 14 is set up in the interior of the high-pressure part 2a of the steam turbine 2 a temperature T AM of the steam and a mass flow m AM of the steam as close as possible to a housing wall 15 of the
  • High pressure part 2a is measured.
  • the measured values determined by the measuring points 11-14 are fed via data lines 16 and a data bus 17 to a control device 18.
  • the control device 18 is used to process the measured values.
  • the control device 18 is in particular a
  • Forecast calculator implemented for predictive determination, i. H. here to calculate, one
  • FIG. 1 further shows a higher-level control computer 19, which is likewise connected to the data bus 17.
  • the master computer 19 is used to control the turbine system 1.
  • the host computer 19 controls u. a. transient operating modes of the turbine system 1, in which a heating or cooling of the working medium is required.
  • transient operating modes are, for example, startup and shutdown processes or load changes.
  • the unsteady modes are associated with large temperature changes, the high transient thermal stresses in walls, such.
  • the occurrence of harmful thermal stresses can be limited by optimally controlling the transient modes of operation.
  • the control device 18th carried out a predictive estimation regarding changes in temperature distributions within the affected walls. This predictive estimate is then used by host computer 19 to appropriately control the transient modes of operation.
  • the temporal course of the temperature changes in the affected walls during a compensation process of the material properties, an initial temperature distribution and the time course of the heat input in the respective affected wall depends.
  • Temperature distributions 18 mathematical models of the Anürungs- and Abkuhlungsvone and the affected walls are used in the look-ahead computer of the controller.
  • the look-ahead computer of the control device 18 contains two modules with which the predictive calculation of the temperature distributions of the walls is carried out.
  • FIG. 2 shows a schematic representation of a look-ahead computer 20 having a look-ahead module 21 and a real-time module 22.
  • the functions of the two modules 21 and 22 are advantageously implemented in the controller 18 by means of software.
  • the two modules 21, 22 each include a model 23 of the wall for which the temperature distribution is to be predicted.
  • the model 23 is the same here in both modules 21, 22.
  • the wall is divided into several layers.
  • Fig. 3 shows a schematic representation of a portion of the turbine housing wall 15 in the form of a hollow cylinder.
  • the section is characterized by a section length L, an inner radius r, an outer radius R and an outer radius of an insulation R ISOL .
  • the housing wall 15 is divided into several layers 24i-24 n. The subdivision is carried out according to the same material weight of the individual layers 24i-24 n .
  • the look-ahead module 21 of the look-ahead computer 20 of the control device 18 shown in FIG. 2 contains a function block 25 which performs a calculation of a mass flow m of the steam serving as the working medium. Thus, that mass flow m is calculated, which is necessary to achieve a predetermined by the master computer 19 criterion for the operation of the turbine system 1.
  • Such a criterion may be, for example, a specific time within which the turbine system 1 is to be moved from one current power to another power.
  • the calculation of this necessary steam mass flow m is carried out for a given forecast time range for which the temperature distribution in the housing wall 15 is to be determined in a forward-looking manner.
  • the predefined look-ahead time range can be, for example, the time range up to which the desired power of the turbine system is reached.
  • the necessary steam mass flow m calculated by the function block 25 is transmitted to the layer model 23 in the look-ahead module 21.
  • a continuously determining is of current temperatures of the individual layers 24i-24 of the housing wall 15 n as a function of the currently determined temperature T AM and a currently determined mass flow M at the adjacent to the first wall layer 24i carried heat-conducting steam.
  • the measured values of the current temperature T ffl and the current mass flow m AM are determined by the measuring point 14. These two measured values T AM and m AM therefore serve as input values for the layer model 23 of FIG.
  • the look-ahead predictive determining the temperatures of the individual layers 24i-24 is n, the temperature distribution that is in the housing wall 15, performed over the predetermined look-ahead time domain.
  • the function block 25 As input values to the function block 25 to a current pressure P ABD of Abdampfs, ie the exiting the turbine 2 steam, a current speed n DT of the steam turbine 2 and the current temperature T AM of Steam supplied.
  • the function block 25 is an indication GA supplied to the desired operation of the turbine system 1.
  • the specification GA specifies, for example, whether the predetermined criterion should be reached quickly or slowly.
  • Controller 18 obtains various further indications PA about parameters that are required for calculating the anticipatory temperature distribution. Such information is z. As material data, surface information and alpha numbers, ie heat transfer coefficients, etc. About a signal AK of the prediction computer 20 is activated.
  • the look ahead module 21 cyclically calculates the predictive temperature distribution in the housing wall 15. In this case, the beginning of each cycle of the continuously determined from the real-time module 22 current temperatures of the individual layers 24i-n 24 are taken into account. For this purpose, the start-ahead module 21 and the real-time module 22 are supplied with a start signal ST, with which the current temperature distribution in the housing wall 15 determined by the real-time module 22 from the layer model 23 of the real-time module 22 to the
  • Layer model 23 of the Vorschaumoduls 21 is transferred.
  • the layer model 23 of the look ahead module 21 determines the predictive temperature distribution with the predicted temperatures of the individual layers 24i-24 n and outputs the same to its output from the look-ahead computer 20th
  • the control device 18 then transmits the calculated prospective temperature distribution to the master computer 19.
  • FIG. 4 shows two successive process sections controlled by the host computer 19 during operation of the turbine installation 1.
  • a first process section 26 comprises a startup of the turbine installation 1 from an application speed to a nominal speed and a subsequent synchronization with a power grid connected to the generator 3 is.
  • a second process section 27 comprises loading the turbine installation 1 to desired power.
  • the two process sections 26, 27 provide predetermined Forecasting time ranges over which the control device 18 determines predictive temperature distributions.
  • the predictive temperature distributions are to be determined here in the housing wall 15 of the high-pressure part 2 a of the steam turbine 2.
  • the turbine 2 is initially heated to the heating speed. This is illustrated in FIG. 4 by a function block 28.
  • the host computer 19 controls the startup to the rated speed of the turbine 2. This is indicated by a function block 29.
  • the real-time module 22 of the control device 18 determines continuously during the ramp-up to the rated speed, the current temperature distribution in the
  • the Vorschaumodul 21 is transmitted from the master computer 19, a predetermined criterion, based on which the Vorschaumodul 21 determines a required for booting to the rated speed of steam or a required steam mass flow.
  • the predetermined criterion is a speed change rate dn / dt which the turbine 2 is to maintain at startup. It can also be alternatively or additionally a run-up time t H ocH be given as a predetermined criterion, during which the start up to the rated speed is to take place.
  • the specification of the predetermined criterion is shown in FIG. 4 by a function block 31.
  • the Vorschaumodul 21 cyclically takes over the current temperature distribution in the housing wall 15 during startup to the rated speed of the real-time module 22 and calculated with this current temperature distribution as the starting value, the predictive temperature distribution. These is supplied to the host computer 19, which checks whether predetermined allowable temperature differences are maintained or exceeded in the calculated predictive temperature distribution. This is illustrated in FIG. 4 by a function block 32. If it is determined that permissible temperature differences are not adhered to, the master computer 19 suitably controls the startup process so that the permissible temperature differences can be maintained. If it is determined that the permissible temperature differences are complied with, then the
  • Control computer 19 the operation of the turbine system in the second process section 27th
  • the turbine 2 first heats up at the power level after
  • a function block 33 Based on the warm-up at the power level after the synchronization, the host computer 19 controls the loading of the turbine 2 to the power setpoint. This is indicated by a function block 34.
  • the real-time module 22 of the control device 18 determines continuously during loading the current temperature distribution in the layers 24i-24 15 n of the housing wall as a function of current and continuously measured temperature T M1 of the steam and the steam mass flow 171 micro This is shown in Fig. 4 made clear by a function block 35.
  • the Vorschaumodul 21 is transmitted from the master computer 19, another predetermined criterion, on the basis of which the Vorschaumodul 21 a required for the burden
  • the predetermined criterion is a power change speed, or a power gradient, dP / dt or a load time t B EL, during which the turbine 2 is to be loaded.
  • the specification of the predetermined criterion is shown in FIG. 4 by a function block 36.
  • the look-ahead module 21 takes over cyclically during the loading of the Real-time module 22, the current temperature distribution in the housing wall 15 and thus calculates the predictive temperature distribution. This is fed to the master computer 19, which checks whether predetermined permissible temperature differences are maintained or exceeded in the calculated predictive temperature distribution. This is illustrated in FIG. 4 by a function block 37.
  • the master computer 19 suitably controls the loading process, so that the permissible temperature differences can be maintained. If it is determined that the permissible temperature differences are adhered to, the master computer 19 ends the starting process. This is shown with a function block 38.
  • FIG. 5 shows a schematic block diagram for calculating the mass steam flow m AM required for starting up the turbine 2 at the rated speed during the first process section 26. This calculation is performed in the function block 25 of FIG. 5
  • Advance module 21 is performed.
  • the functional block 25 receives as input values the criterion of the speed change speed dn / dt, the shaft inertia and the current turbine speed, the current steam temperature T AM prevailing at the moment of the calculation, and the steam pressure P ABD - the required steam mass flow m AM is calculated by means of the function block 25 for each cyclic time step of the look-ahead time range, ie here for the ramp-up to the rated speed.
  • a heat flow can then be determined which is fed to the control volume of interest, the housing wall 15, during startup.
  • FIG. 6 shows a schematic block diagram for calculating the mass steam flow m AM required during loading of the turbine 2 during the second process section 27. This calculation is performed in the function block 25 of the look-ahead module 21.
  • the functional block 25 receives as input values the criterion of the power change speed dP / dt, the starting power PO at nominal speed, the current steam temperature T AM prevailing at the moment of the calculation, and the exhaust steam pressure P ABD - the required steam mass flow m m is calculated by means of the function block 25 for each cyclic time step of the prediction time range, ie here for the load pickup.
  • the determined steam mass flow m AM and the current steam temperature T AM a heat flow can then be determined that corresponds to the one of interest
  • Control volume the housing wall 15, is supplied during loading.
  • a heat flow calculated in the real-time module 22, which is supplied to the control volume, the housing wall 15, is determined directly from the measured steam temperature T AM and the steam throughput m AM.
  • Fig. 7 shows a schematic block diagram of the layer model 23 for predictive calculating each temperature Ti-T n of the layers 24i-24 n of the housing wall 15.
  • the layer model 23 includes a module 39 for calculating a heat transfer coefficient alpha and a saturation temperature.
  • the heat transfer coefficient alpha is relevant for the transfer of heat from the
  • the module 39 is supplied as input variables of the steam mass flow m AM (FIGS. 5, 6) previously determined for the relevant preview time range, the current steam pressure P AM and the current steam temperature T AM . Furthermore, the temperature Ti of the first layer 24i, which is determined in advance by the module 401, is fed back to the input of the module 39. From these input variables, the module 39 determines the heat transfer coefficient alpha for the transfer of heat from the working medium into the first layer 24i of the housing wall 15. In the case of steam condensation, a constant heat transfer coefficient is assumed. The saturation temperature corresponding to the pressure is determined from the saturation function. In the presence of superheated steam, the heat transfer coefficient is calculated as a function of the steam flow rate. The exact structure of the module 39 is shown with reference to a block diagram of the module 39 shown schematically in FIG.
  • the heat transfer coefficient alpha determined by the module 39 is transmitted to the module 40i as an input variable.
  • Alpha represents a foresight determined heat flow ⁇ r i AM the passage of the working medium in the first layer 24 X.
  • the module 4Oi furthermore receives the current steam temperature T AM , the temperature T 2 of the second layer 24 2 determined by the module 40 2, and the temperatures T ANF of the layers of the housing wall 15 currently calculated by the real-time module 22 as input variables.
  • the module 40i outputs, as output variables, the anticipated temperature Ti and a forwardly determined heat flow ⁇ i_ 2 , which transitions from the first layer 24i into the second layer 24 2 .
  • 4Oi is shown with reference to a block diagram of the module 4Oi shown schematically in FIG. 9.
  • the quantities Ti and ⁇ 1 - 2 output by the module 4Oi are supplied to the module 4Ü2 as input variables.
  • the module 4Ü2 receives the temperature T3 of the third layer 24 3 , which was determined in advance by the module 4O3, and which is currently calculated by the real-time module 22
  • the module 4Ü2 outputs as output variables the anticipated determined temperature T 2 and a predictive determined heat flow ⁇ 2-3, which is transferred from the second layer 242 in the third layer 24 3rd
  • the exact structure of the module 4Ü2 is shown with reference to a block diagram shown schematically in FIG.
  • the block diagram shown in Fig. 10 is the structure between the first module and the last module 4Oi 4O n lying modules 402-40 n _i again k thereby provides a variable for the respective module 402-40 _i n represents 2 wherein ⁇ k ⁇ (nl).
  • the layer temperature T x -T n determined in advance by the respectively following module 40 i-40 n is fed back to the respectively preceding module 39, 40 i-40 n -i as an input variable. Furthermore, the modules 40i-40 n -i are each supplied with the temperatures T ANF of the layers of the housing wall 15 currently calculated by the real-time module 22 as input variables.
  • the module 40 n -i output sizes T n _i and are supplied to the module 4O n as input variables.
  • the module 4O n receives the temperatures T ANF currently calculated by the real-time module 22 and a currently measured ambient temperature T UM , which prevails outside the housing wall 15.
  • the module 4O n outputs as output the predictive determined temperature T n .
  • the exact structure of the module 4O n is shown with reference to a block diagram shown schematically in FIG. 11.
  • calculating the average temperatures T x -T n of the individual layers is based 24i-24 n on the recognition of the incoming and outgoing heat flows ⁇ .
  • the temperatures Ti-T n determined in a forward-looking manner by the modules 40 i-40 n are supplied to the module 41 as input variables.
  • the module 41 receives an indication of weights Gi-G n of the individual layers 24i-24 n.
  • the module 41 determines the average integral temperature T with int.
  • the individual temperatures Ti-T n are weighted with the weights Gi-G n of the individual layers.
  • the exact structure of the module 41 is shown with reference to a block diagram shown schematically in FIG. 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant d'anticiper la répartition de température dans une paroi (15) d'une installation de turbines (1). La paroi (15) se subdivise en plusieurs couches (24), une même température (T<SUB>i</SUB>-T<SUB>n</SUB>) étant prise en compte pour la couche (24) concernée. Dans un module temps réel (22), on détermine en continu les températures (T<SUB>ANF</SUB>) actuelles des différentes couches (24) de la paroi (15) en fonction d'une température (T<SUB>AM</SUB>) actuelle déterminée d'un agent conducteur de chaleur adjacent à la première couche (24<SUB>i</SUB>) de la paroi. L'invention concerne également un module d'anticipation (21) qui détermine de manière anticipée et cyclique les températures (T<SUB>i</SUB>-T<SUB>n</SUB>) des différentes couches (24) sur une période prédéterminée. Au début de chaque cycle, on tient compte des températures (T<SUB>ANF</SUB>) actuelles et déterminées en continu des différentes couches (24).
EP06841487A 2006-02-06 2006-12-20 Procédé et dispositif permettant d'anticiper la répartition de température dans une paroi d'une installation de turbines Withdrawn EP1982051A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006005314 2006-02-06
PCT/EP2006/069972 WO2007090482A1 (fr) 2006-02-06 2006-12-20 Procédé et dispositif permettant d'anticiper la répartition de température dans une paroi d'une installation de turbines

Publications (1)

Publication Number Publication Date
EP1982051A1 true EP1982051A1 (fr) 2008-10-22

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EP06841487A Withdrawn EP1982051A1 (fr) 2006-02-06 2006-12-20 Procédé et dispositif permettant d'anticiper la répartition de température dans une paroi d'une installation de turbines

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Country Link
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WO (1) WO2007090482A1 (fr)

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Publication number Priority date Publication date Assignee Title
US10954824B2 (en) 2016-12-19 2021-03-23 General Electric Company Systems and methods for controlling drum levels using flow
US10677102B2 (en) * 2017-02-07 2020-06-09 General Electric Company Systems and methods for controlling machinery stress via temperature trajectory

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Publication number Priority date Publication date Assignee Title
US4181840A (en) * 1975-02-13 1980-01-01 Westinghouse Electric Corp. Anticipative turbine control
JPS57179509A (en) * 1981-04-28 1982-11-05 Tokyo Shibaura Electric Co Method of controlling temperature of superheated steam of boiler
JPS59231604A (ja) * 1983-06-14 1984-12-26 Hitachi Ltd 火力発電プラントの運転制御方法
US6952639B2 (en) * 2002-11-12 2005-10-04 General Electric Company Method and system for temperature estimation of gas turbine combustion cans

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Title
See references of WO2007090482A1 *

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