EP0937194A1 - Turbinenleiteinrichtung sowie verfahren zur regelung eines lastwechselvorgangs einer turbine - Google Patents
Turbinenleiteinrichtung sowie verfahren zur regelung eines lastwechselvorgangs einer turbineInfo
- Publication number
- EP0937194A1 EP0937194A1 EP97949887A EP97949887A EP0937194A1 EP 0937194 A1 EP0937194 A1 EP 0937194A1 EP 97949887 A EP97949887 A EP 97949887A EP 97949887 A EP97949887 A EP 97949887A EP 0937194 A1 EP0937194 A1 EP 0937194A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine
- load change
- change process
- turbine guide
- var
- 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.)
- Granted
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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/12—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to temperature
Definitions
- the invention relates to a turbine guide device and a method for regulating a load change process of a turbine, in particular a steam turbine, taking into account a maximum permissible material stress during the load change process.
- an associated signal is transmitted to a turbine speed control device or a power control device, depending on whether the turbine is in an acceleration phase in which the rotational speed of the shaft is increased or whether the tur bine is in a power coupling phase, in which the turbine is connected to the generator and started up to the desired power.
- the method and the associated computer system serve to achieve the shortest possible start-up time, taking into account the material stresses permitted for a specific starting frequency.
- Temporal control device for power plant turbines by P. Martin et al in BWK, Volume 36, No. 12/1984, a device is described by means of which the stress on selected turbine parts is monitored. The device regulates each starting process
- a maximum permissible temperature difference (T m - T x ) is specified as a function of the mean temperature T m .
- the current temperature difference is determined by the turbine control computer and from this the allowance for the maximum permissible temperature difference is calculated.
- a preview of the expected course of the allowance is also carried out. From these two values, a guide variable is formed with which the start-up and loading speed can be changed at an early stage by means of a setpoint control for speed and power, thus adapting to the dynamics of the system behavior.
- the service life consumption is calculated from fatigue fatigue, so that it can be determined in good time and with foresight when the point will be reached when a precise inspection of the turbine is necessary.
- the start-up mode "normal” corresponds exactly to such a start-up mode, through which 4,000 load changes of the turbine are possible.
- the "fast” start-up mode leads to a higher load corresponding to about 800 possible load changes, and the “slow” start-up mode leads to less material fatigue, so that about 10,000 load changes are possible.
- the object of the invention is to provide a turbine guide device for regulating a load change process of a turbine, by means of which a flexible change in the operating conditions of the turbine corresponding to the operational requirements for generating electrical energy can be achieved, taking into account a maximum permissible material load.
- An advantage of a turbine guide device is the direct or indirect specification of the desired time for starting and stopping and changing the power of the turbo set, taking into account physical limit values.
- An input device can be provided to supply a time variable.
- This can be supplied with a variable for a variable specification of the time duration of the load change process, which variable can in particular already be the time duration itself.
- a time period which can be individually predefined flexibly for each load change process is preferably determined.
- the time period can be freely selected, i.e. it can take on any physically meaningful value. It can be continuously adjusted to any physically and operationally meaningful value.
- the duration of a load change from an initial state to a target state can be specified by the operator.
- a turbine guide variable is determined in the limiting unit, which is determined as a function of time in the time period between leaving the initial state and reaching the target state.
- this turbine guide variable also preferably depends on the starting temperature at the time of the initial state and the end temperature at the time of the target state, the component geometry, the material used, the steam state and the temperature level.
- the turbine guide device preferably has an exhaustion unit in which a determination of the material exhaustion of the load change process to be carried out in accordance with the turbine guide size is carried out.
- the exhaustion unit can calculate the additional material exhaustion in advance, so that on the basis of this material exhaustion and the still desired operating time of the turbine it can be decided manually or automatically whether the load change process should actually be carried out in the desired time period.
- the expected material fatigue is preferably displayed on an output medium, such as a screen, a printer, etc.
- the exhaustion unit is preferably also used to determine the material exhaustion when the load change process has actually been carried out in the desired time period.
- the values of the additional material creation can also be displayed on a corresponding output medium and stored in a storage medium, in particular a storage medium of a computer system. Information about the exhaustion of the material and thus about the remaining operating time of the turbine is thus known at all times. In this way, future load change processes can each be carried out with a correspondingly flexibly selectable period of time, whereby the load change can be carried out more gently in the case of already high material exhaustion (longer time period) or a quick load change (short time period) can be carried out with a sufficiently large reserve (low material exhaustion) .
- the turbine guide device preferably has a regulating unit and / or a control unit, each of which can be connected to an actuator of the turbine for regulating and / or controlling the load change process.
- the actuator is preferably a valve through which the inflow of hot steam can be adjusted.
- the turbine guide device preferably has a stress unit to which system values, such as pressure values or temperature values of the turbine, can be supplied.
- This stress unit is connected to the exhaustion unit and / or the limiting unit.
- the system values processed or forwarded in the stress unit are fed to the limiting unit, so that a comparison between the setpoint value and the actual value of the turbine guide variable can be carried out and, if there is a corresponding deviation, a control intervention, i.e. actuation of the actuator is carried out.
- the system values are used to determine the additional material exhaustion, which - as already mentioned - can be saved or displayed.
- the turbine guide size preferably represents a measure of the material fatigue. The material fatigue is during the
- the turbine guide variable can in this case be the temperature difference between an average component temperature and a surface component temperature, in particular the turbine shaft or the turbine housing, as is described, for example, in the above-mentioned article "Turbine master computer for thermal monitoring of steam turbines" Turbine guide size is ensured that, on the one hand, the material stress during the load change process remains below a critical limit and, on the other hand, that temperature expansions remain within a required range, so that, for example, a game can be bridged between two components of the turbine and warping can be avoided.
- system values are preferably determined at various points on the turbine and on various components (turbine shaft, valves, boiler, etc.).
- the fatigue components that have occurred can be detected separately in the exhaustion unit for different components of the turbine, and from this an entire exhaustion of the turbine or individual components can be determined and stored.
- the turbine guide device as a whole or that individual units can or can be present as a computer program, as an electronic component or as a circuit and on a microprocessor.
- FIG. 1 shows a schematic representation of a steam turbine with a turbine guide device and FIG. 2 shows a temperature profile on the turbine shaft during the period of the load change process.
- FIG. 1 schematically shows a steam turbine 7 with a generator 13 connected to it and with a turbine guide device 1.
- the turbine guide device 1 can be supplied with a signal or a variable 20 for the desired time period t v of a load change process (for example via an input device), as indicated by the arrow 20.
- the signal corresponding to the time period t v is fed to a limiting unit 3.
- a determination is made in the delimitation unit 3, taking into account data from an exhaustion unit 4 connected to the delimitation unit 3 a respective turbine guide variable VAR depending on the time period t v , so that the load process can be controlled from an initial state Ain to a target state Z. This is shown enlarged in FIG. 2.
- the turbine guide variables VAR are formed for the various components to be monitored, such as valve housing, turbine housing and turbine shaft, and represent temperature differences of the temperature T 0 between the respective surface and an integral mean temperature T m of the respective component.
- Each turbine guide variable VAR represents a temperature difference between the two temperatures (T 0 - T m ) is a measure of the thermal voltage or thermal expansion and thus of the alternating stress fatigue.
- the turbine guide variables VAR are determined over the time period t v in such a way that constant fatigue occurs during the entire time period t v and thus a constant increase in fatigue occurs.
- FIG. 2 shows the course for a start-up process in which the average temperature T ra is lower than the surface temperature T 0 . During a shutdown process (not shown), the average temperature T m is greater than the surface temperature T 0 .
- the limiting unit 3 is connected to the exhaustion unit 4, so that the latter can be supplied with the predetermined values of the turbine guide variables VAR.
- the additional fatigue caused by the load change process is calculated in advance. This additional fatigue is also shown on an output medium 11 which is connected to the exhaustion unit 4.
- the output medium 11 can be, for example, a monitor that is in the control room (not shown) of the turbine
- the difference value from the turbine guide variable VAR and the measured temperature difference (T 0 -T m ) of the component is fed to a setpoint control function unit 2.
- the permissible speed and power change in the setpoint control function unit 2 determined.
- a signal for changing the turbine speed and power is sent to a control unit 5, via which an actuator 6, in particular a steam valve, of the turbine 7 is actuated.
- the inflow of steam into the turbine 7 is thus adjusted in accordance with the turbine guide variable VAR, which also indirectly controls the surface temperature T 0 and the average temperature T m , in particular the turbine shaft.
- the system values of the turbine 7, in particular the steam temperature, the component temperature and the steam pressures, are recorded by measuring elements (not shown), for example thermocouples, and recorded in a temperature measuring unit 9.
- This temperature measuring unit 9 is connected to the stress unit 8 and transmits the determined system values to it.
- the system values are evaluated in the stress unit 8, in particular the surface temperature T 0 and the average temperature T m of the turbine shaft are calculated. These values are transmitted to the limiting unit 3 and / or to the exhaustion unit 4. In the limiting unit 3, a comparison is made between that previously, in particular in the
- Limiting unit 3 specific target value and the actual value of the turbine guide variable VAR determined in the stress unit 8.
- the control unit 5 performs a corresponding control intervention in the actuator 6 by means of the target value management function.
- the exhaustion unit 4 the additional exhaustion, i.e. Material fatigue, determined by the load change process actually carried out. This exhaustion is displayed on the one hand on the output medium 11 and on the other hand, if necessary, stored with additional system values of the turbine 7 in a storage medium 10, in particular a permanent memory of a computer system or another data carrier.
- the invention is characterized by a turbine guide device which works in a time-oriented, in particular in a start-up-oriented manner, the time duration of a load change in
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19646182 | 1996-11-08 | ||
DE19646182 | 1996-11-08 | ||
PCT/DE1997/002607 WO1998021451A1 (de) | 1996-11-08 | 1997-11-07 | Turbinenleiteinrichtung sowie verfahren zur regelung eines lastwechselvorgangs einer turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0937194A1 true EP0937194A1 (de) | 1999-08-25 |
EP0937194B1 EP0937194B1 (de) | 2002-02-13 |
Family
ID=7811090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97949887A Expired - Lifetime EP0937194B1 (de) | 1996-11-08 | 1997-11-07 | Turbinenleiteinrichtung sowie verfahren zur regelung eines lastwechselvorgangs einer turbine |
Country Status (8)
Country | Link |
---|---|
US (1) | US6239504B1 (de) |
EP (1) | EP0937194B1 (de) |
JP (1) | JP4127856B2 (de) |
KR (1) | KR20000053135A (de) |
CN (1) | CN1084824C (de) |
DE (1) | DE59706404D1 (de) |
RU (1) | RU2193671C2 (de) |
WO (1) | WO1998021451A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1653050A1 (de) * | 2004-10-29 | 2006-05-03 | Siemens Aktiengesellschaft | Verfahren zur Ermittlung eines für den Ermüdungszustand eines Bauteils charakteristischen Kennwert |
EP1707757A3 (de) * | 2005-03-16 | 2008-12-03 | Kabushiki Kaisha Toshiba | Vorrichtung zur Startsteuerung einer Turbine und korrespondierendes Verfahren |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10011393A1 (de) * | 2000-03-09 | 2001-09-13 | Tacke Windenergie Gmbh | Regelungssystem für eine Windkraftanlage |
DK1365110T3 (da) * | 2002-05-22 | 2009-04-20 | Siemens Ag | Fremgangsmåde og apparat til drift af et dampkraftanlæg, især i dellastområdet |
US6865935B2 (en) * | 2002-12-30 | 2005-03-15 | General Electric Company | System and method for steam turbine backpressure control using dynamic pressure sensors |
US20050193739A1 (en) * | 2004-03-02 | 2005-09-08 | General Electric Company | Model-based control systems and methods for gas turbine engines |
EP1674667A1 (de) * | 2004-12-21 | 2006-06-28 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zum Aufwärmen einer Dampfturbine |
WO2007045537A2 (de) | 2005-10-17 | 2007-04-26 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur bestimmung des lebensdauerverbrauchs einzelner bauteile einer fossil befeuerten energieerzeugungsanlage, insbesondere einer gud-anlage |
US7937928B2 (en) * | 2008-02-29 | 2011-05-10 | General Electric Company | Systems and methods for channeling steam into turbines |
US7984656B2 (en) * | 2008-07-24 | 2011-07-26 | United Technologies Corporation | NSMS flight laser detector system |
US20100018316A1 (en) * | 2008-07-24 | 2010-01-28 | United Technologies Corporation | NSMS flight laser detector cooling system |
JP5457805B2 (ja) * | 2009-11-26 | 2014-04-02 | 株式会社東芝 | 発電計画支援装置および方法 |
US20120283963A1 (en) * | 2011-05-05 | 2012-11-08 | Mitchell David J | Method for predicting a remaining useful life of an engine and components thereof |
DE102012209139A1 (de) * | 2012-05-31 | 2013-12-05 | Man Diesel & Turbo Se | Verfahren zum Betreiben einer Solaranlage |
JP6004484B2 (ja) * | 2013-03-29 | 2016-10-12 | 三菱日立パワーシステムズ株式会社 | 蒸気タービン発電プラント |
CN103452605A (zh) * | 2013-09-02 | 2013-12-18 | 哈尔滨热电有限责任公司 | 基于dcs系统的背压保护控制方法 |
CN103485838A (zh) * | 2013-09-03 | 2014-01-01 | 哈尔滨热电有限责任公司 | 300mw高背压机组供热抽汽量改变时保护安全裕度及背压保护控制方法 |
CN103485835A (zh) * | 2013-10-30 | 2014-01-01 | 哈尔滨热电有限责任公司 | 300mw高背压机组系统的背压保护控制方法 |
FR3015672B1 (fr) * | 2013-12-23 | 2016-02-05 | Ge Energy Products France Snc | Systeme et procede de test d'une machine tournante |
EP3159665A1 (de) * | 2015-10-19 | 2017-04-26 | Siemens Aktiengesellschaft | Temperaturmesseinrichtung und verfahren zum betrieb einer strömungsmaschine |
Family Cites Families (14)
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DE1698476B1 (de) * | 1961-02-16 | 1969-12-11 | Bbc Brown Boveri & Cie | Verfahren und Einrichtung zur UEberwachung der Zustandsaenderungen von Waermekraftmaschinen |
DE1426262B2 (de) * | 1961-08-02 | 1971-02-04 | Howell Instruments Ine Fort Worth Tex (V St A ) | Anordnung zur Anzeige der normierten Reststandzeit oder des normierten Stand Zeitverlustes einer Baueinheit |
CH593418A5 (de) * | 1976-01-28 | 1977-11-30 | Bbc Brown Boveri & Cie | |
JPS581243B2 (ja) * | 1976-02-16 | 1983-01-10 | 株式会社日立製作所 | タ−ビンの運転方法 |
FR2380418A1 (fr) * | 1977-02-09 | 1978-09-08 | Europ Turb Vapeur | Procede pour la conduite d'un ensemble de production d'energie |
GB2002543B (en) * | 1977-07-29 | 1982-02-17 | Hitachi Ltd | Rotor-stress preestimating turbine control system |
US4228358A (en) | 1979-05-23 | 1980-10-14 | Nova Associates, Inc. | Wafer loading apparatus for beam treatment |
US4320625A (en) * | 1980-04-30 | 1982-03-23 | General Electric Company | Method and apparatus for thermal stress controlled loading of steam turbines |
US4575803A (en) * | 1981-12-30 | 1986-03-11 | Semco Instruments, Inc. | Engine monitor and recorder |
JPS6081406A (ja) * | 1983-10-11 | 1985-05-09 | Toshiba Corp | タ−ビン制御装置 |
US4598551A (en) * | 1985-10-25 | 1986-07-08 | General Electric Company | Apparatus and method for controlling steam turbine operating conditions during starting and loading |
US5042246A (en) * | 1989-11-06 | 1991-08-27 | General Electric Company | Control system for single shaft combined cycle gas and steam turbine unit |
US5517424A (en) * | 1994-03-31 | 1996-05-14 | Electric Power Research Institute, Inc. | Steam turbine fuzzy logic cyclic control method and apparatus therefor |
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1997
- 1997-11-07 RU RU99112196/06A patent/RU2193671C2/ru active
- 1997-11-07 WO PCT/DE1997/002607 patent/WO1998021451A1/de not_active Application Discontinuation
- 1997-11-07 DE DE59706404T patent/DE59706404D1/de not_active Expired - Lifetime
- 1997-11-07 JP JP52203298A patent/JP4127856B2/ja not_active Expired - Fee Related
- 1997-11-07 EP EP97949887A patent/EP0937194B1/de not_active Expired - Lifetime
- 1997-11-07 KR KR1019990704065A patent/KR20000053135A/ko not_active Application Discontinuation
- 1997-11-07 CN CN97199141A patent/CN1084824C/zh not_active Expired - Fee Related
-
1999
- 1999-05-10 US US09/307,997 patent/US6239504B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
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See references of WO9821451A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1653050A1 (de) * | 2004-10-29 | 2006-05-03 | Siemens Aktiengesellschaft | Verfahren zur Ermittlung eines für den Ermüdungszustand eines Bauteils charakteristischen Kennwert |
WO2006045811A1 (de) * | 2004-10-29 | 2006-05-04 | Siemens Aktiengesellschaft | Verfahren zur ermittlung eines für den ermüdungszustand eines bauteils charakteristischen kennwerts |
EP1707757A3 (de) * | 2005-03-16 | 2008-12-03 | Kabushiki Kaisha Toshiba | Vorrichtung zur Startsteuerung einer Turbine und korrespondierendes Verfahren |
Also Published As
Publication number | Publication date |
---|---|
KR20000053135A (ko) | 2000-08-25 |
RU2193671C2 (ru) | 2002-11-27 |
JP4127856B2 (ja) | 2008-07-30 |
CN1084824C (zh) | 2002-05-15 |
US6239504B1 (en) | 2001-05-29 |
EP0937194B1 (de) | 2002-02-13 |
JP2001504566A (ja) | 2001-04-03 |
WO1998021451A1 (de) | 1998-05-22 |
CN1234848A (zh) | 1999-11-10 |
DE59706404D1 (de) | 2002-03-21 |
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