WO2015028366A2 - Betriebsverfahren für einen extern beheizten zwangdurchlaufdampferzeuger - Google Patents
Betriebsverfahren für einen extern beheizten zwangdurchlaufdampferzeuger Download PDFInfo
- Publication number
- WO2015028366A2 WO2015028366A2 PCT/EP2014/067729 EP2014067729W WO2015028366A2 WO 2015028366 A2 WO2015028366 A2 WO 2015028366A2 EP 2014067729 W EP2014067729 W EP 2014067729W WO 2015028366 A2 WO2015028366 A2 WO 2015028366A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steam
- steam generator
- pressure
- turbine
- once
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
- F01K7/165—Controlling means specially adapted therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Definitions
- the invention relates to an operating method for an externally heated forced once - through steam generator, in particular a so ⁇ larthermically heated forced once - through steam generator, according to the preamble of claim 1.
- Solar thermal power plants are an alternative to conventional electricity generation ago ⁇ .
- An already known power plant concept in this area is trough power plant, the so-called parabolic.
- thermal oil is typically used as the heat transfer medium, which is the
- Parabolic troughs of a solar field flows through and absorbs the heat introduced via the sun as an external heat source and transfers it to a flow medium flowing through the steam generator.
- Main steam supplied via a water-steam separator of the steam turbine is predominantly used during the start-up phase.
- ⁇ operating phase contrast superheated Strö ⁇ tion medium at the outlet of the once-through steam generator and therefore also in the water-steam separator must always sufficiently present so that the steam turbine is not supplied with saturated steam.
- the ⁇ A position of the corresponding fresh steam temperature at the outlet of the once-through steam generator can be set accurately only by the choice of the correct feed-water mass flow, therefore, and are variations of the feed-water mass flow directly linked to fluctuations in the live steam temperature.
- the object of the invention is therefore for power plants, and in particular ⁇ for solar thermal power plants in which, unlike power plants with thermal storage devices, the load change speed is not freely selectable but is dependent on the respective solar radiation to provide an operating method for an externally heated forced once-through steam generator with the help of such inadmissibly high and thus possibly no longer ver ⁇ controllable temperature fluctuations at the outlet of the solar thermal or otherwise externally heated forced once-through steam generator can be avoided even during rapid load decreases in the lower load range.
- the method according to the invention can additionally stabilize the entire pressure control and, moreover, that in the
- this may be it ⁇ ranges by optimizing the appli ⁇ case of use performance management of the steam turbine. It has been found that a very effective way to reduce the pressure moderate, is be ⁇ is to couple the current power delivery of the steam turbine to the steam generator currently transferred from the heat transfer medium to the heat flow Zwang barnlauf- functional. Specifically, this means that in relative terms the steam turbine has to reduce its load just as quickly as the heat currently being transferred to the forced-circulation steam generator decreases.
- the pressure control that controls the at least one steam turbine valve to extend suitable. Forming a power setpoint for the steam turbine on Ba ⁇ sis of the currently transmitted to the steam generator heat flow, this is compared with the current power delivery of the steam turbine, so the control deviation formed therefrom can be used directly after appropriate normalization to on the controller used in the pressure control, the steam turbine valves related to the power release of
- Pressure control structures can be introduced and the required measurement and data values are already largely present ⁇ hand .
- the inventive method is independent of the Were ⁇ membomedium principle for all externally heated
- the method could if several steam valves, usually is in fact adjacent to the high-pressure turbine valve in systems with intermediate superheating, a low pressure turbine valve provided, on which are applied under different ⁇ union turbine valves.
- the reheater on the heat transfer medium side or the low-pressure turbine on the turbine side could also be included in the pressure control.
- Pressure control device 3 This pressure control device 3 consists of an adjustable control valve 31 and a pressure measuring device 32 in the steam line 6 between
- the live steam pressure prevailing in the steam line 6 is measured and fed to a control device 4. From the measured steam pressure of the presently applied pressure setpoint 41 übli ⁇ chtem corresponds to the hard pressure is withdrawn.
- the Standde control deviation 44 is supplied to a controller 42 after appropriate normalization.
- This controller 42 may be, for example, a PID, PI, P or a combination of the individual controllers.
- the controller 42 then controls the controllable valve 31 in accordance with the control deviation via a motor 33 or any other actuator in such a way that the predetermined desired pressure value can be sustainably adjusted.
- the tur ⁇ binenventil is usually fully open in normal load operation and the pressure changes in load changes according to the natural Gleit horrin. Only when, with a correspondingly large load reduction, does the current live steam pressure fall below the setpoint pressure value does the control begin to intervene and the turbine valve closes in such a way that the preset pressure setpoint (fixed pressure) is established.
- the heat transfer medium also acts as a storage medium, it then takes in the subsequent load operation phase, especially for small feedwater mass flows very long, until this additional stored energy is discharged again.
- the steam temperature remains at a high temperature level for a very long time under these circumstances.
- the feedwater control concept is ⁇ built correction controller of main steam temperature during this lengthy period the Lucasbergmassen- current increase over charge, since the scheme will try to lichst decrease rapidly compared to the setpoint is raised temperature mög ⁇ so that at some point the steam temperature will suffer inevitably , This temperature decrease is a consequence of the excessive supply and can then not be intercepted by the injection cooling device 5, so that when falling below a minimum steam temperature, the steam turbine has to go out of operation for self-protection.
- Consequences can be counteracted effectively by the additional DampfShi ⁇ on being caused by the decrease in pressure lengthened and thus be maintained feed water and live steam mass flow rather in equilibrium.
- a mo ⁇ modified control device 4 ⁇ provided.
- the power setpoint 46 in the additional control loop is which can be determined in the form of a mathematical function on the basis of the introduced into the steam generator heat output, subtracted from a means of a corresponding measuring device 21 currently measured steam turbine power.
- the resulting control deviation is 47 after appropriate normalization 48 is also supplied to the controller 42 so as then according bain the required performance of the steam turbine set ⁇ .
- ⁇ additionally responds to deviations from a predetermined pressure desired value in addition to the power control in the present embodiment in FIG 2 is to always use a Min selection 45 the afflicted with a negative sign largest deviation which provides for a corresponding closing of the control valves .
- the individual control loops so either the power control of the steam turbine or the pressure control takes the lead for the throttling behavior of the shown in FIG 2 a control valve 31.
- the control loop loop 46-48 power regulation of the steam turbine
- the moderate reduction of pressure is to couple the power release of the steam turbine to the heat output of the heat transfer medium to the forced flow steam generator.
- the turbine output temporarily remains at a higher level compared to the heat consumption of the once-through steam generator due to the above-mentioned withdrawal effects of the once-through steam generator (after completion of the load change, a balance between absorbed heat and discharged again ⁇ ner turbine power on).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14758811.5A EP3014178A2 (de) | 2013-08-28 | 2014-08-20 | Betriebsverfahren für einen extern beheizten zwangdurchlaufdampferzeuger |
US14/913,017 US20160208656A1 (en) | 2013-08-28 | 2014-08-20 | Operating method for an externally heated forced-flow steam generator |
IL243949A IL243949A0 (en) | 2013-08-28 | 2016-02-04 | Method of operation for an externally heated forced flow steam generator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013217167.6 | 2013-08-28 | ||
DE102013217167 | 2013-08-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2015028366A2 true WO2015028366A2 (de) | 2015-03-05 |
WO2015028366A3 WO2015028366A3 (de) | 2015-05-07 |
Family
ID=51485567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/067729 WO2015028366A2 (de) | 2013-08-28 | 2014-08-20 | Betriebsverfahren für einen extern beheizten zwangdurchlaufdampferzeuger |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160208656A1 (de) |
EP (1) | EP3014178A2 (de) |
IL (1) | IL243949A0 (de) |
WO (1) | WO2015028366A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016218763A1 (de) * | 2016-09-28 | 2018-03-29 | Siemens Aktiengesellschaft | Verfahren zur kurzfristigen Leistungsanpassung einer Dampfturbine eines Gas-und Dampfkraftwerks für die Primärregelung |
US10788201B2 (en) | 2018-10-03 | 2020-09-29 | Samuel Harriat | Solar powered boiler assembly |
BE1027173B1 (nl) * | 2019-04-05 | 2020-11-03 | Atlas Copco Airpower Nv | Werkwijze voor het regelen van een systeem voor vermogensopwekking, dergelijk systeem voor vermogensopwekking en compressorinstallatie omvattend dergelijk systeem voor vermogensopwekking |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012110344A1 (de) | 2011-02-17 | 2012-08-23 | Siemens Aktiengesellschaft | Verfahren zum betrieb eines solarthermischen parabolrinnenkraftwerks |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53102405A (en) * | 1977-02-18 | 1978-09-06 | Hitachi Ltd | Speed governing of steam turbine |
DE2730415C2 (de) * | 1977-07-06 | 1983-02-24 | Saarbergwerke AG, 6600 Saarbrücken | Verfahren zur pendelungsfreien Regelung eines Kraftwerksblocks im gesteuerten Gleitdruck |
DE3228996A1 (de) * | 1982-08-03 | 1984-02-09 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und einrichtung zur leistungsregelung an einem kraftwerksblock |
ATE35166T1 (de) * | 1982-11-11 | 1988-07-15 | Siemens Ag | Verfahren zum regeln eines kraftwerkblockes. |
JPH0680285B2 (ja) * | 1985-03-20 | 1994-10-12 | 三菱重工業株式会社 | 蒸気タ−ビン制御装置 |
US4888953A (en) * | 1987-11-13 | 1989-12-26 | Babcock-Hitachi Kabushiki Kaisha | Apparatus for controlling boiler/turbine plant |
US5333457A (en) * | 1991-10-07 | 1994-08-02 | Westinghouse Electric Corporation | Operation between valve points of a partial-arc admission turbine |
US5191764A (en) * | 1992-06-09 | 1993-03-09 | Westinghouse Electric Corp. | Governor valve positioning to overcome partial-arc admission limits |
DE19828446C1 (de) * | 1998-06-26 | 1999-09-23 | Hartmann & Braun Gmbh & Co Kg | Verfahren zur koordinierten Regelung eines Dampfkraftwerksblockes |
PL2037086T3 (pl) * | 2007-07-27 | 2013-10-31 | Siemens Ag | Rozruch turbiny parowej |
EP2475884A2 (de) * | 2009-09-10 | 2012-07-18 | Yeda Research and Development Co. Ltd. | Sonnenkraftwerk |
WO2013013682A1 (en) * | 2011-07-23 | 2013-01-31 | Abb Technology Ag | Arrangement and method for load change compensation at a saturated steam turbine |
-
2014
- 2014-08-20 US US14/913,017 patent/US20160208656A1/en not_active Abandoned
- 2014-08-20 WO PCT/EP2014/067729 patent/WO2015028366A2/de active Application Filing
- 2014-08-20 EP EP14758811.5A patent/EP3014178A2/de not_active Withdrawn
-
2016
- 2016-02-04 IL IL243949A patent/IL243949A0/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012110344A1 (de) | 2011-02-17 | 2012-08-23 | Siemens Aktiengesellschaft | Verfahren zum betrieb eines solarthermischen parabolrinnenkraftwerks |
Also Published As
Publication number | Publication date |
---|---|
US20160208656A1 (en) | 2016-07-21 |
EP3014178A2 (de) | 2016-05-04 |
WO2015028366A3 (de) | 2015-05-07 |
IL243949A0 (en) | 2016-04-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1288761B1 (de) | Verfahren zur Regelung eines Niederdruckbypassystems | |
EP2603672B1 (de) | Abhitzedampferzeuger | |
EP2614303B1 (de) | Verfahren zum betreiben einer kombinierten gas- und dampfturbinenanlage sowie zur durchführung des verfahrens hergerichtete gas- und dampfturbinenanlage und entsprechende regelvorrichtung | |
DE102009036064B4 (de) | rfahren zum Betreiben eines mit einer Dampftemperatur von über 650°C operierenden Zwangdurchlaufdampferzeugers sowie Zwangdurchlaufdampferzeuger | |
EP3025031B1 (de) | Verfahren zum betreiben einer dampfturbinenanlage | |
EP1030960A1 (de) | Verfahren zur schnellen leistungsregelung einer dampfkraftanlage sowie dampfkraftanlage | |
EP2606206B1 (de) | Verfahren zur regelung einer kurzfristigen leistungserhöhung einer dampfturbine | |
DE3304292A1 (de) | Verfahren und vorrichtung zum ausregeln von netzfrequenzeinbruechen bei einem gleitdruckbetriebenen dampfkraftwerkblock | |
DE1426701B2 (de) | Anfahreinrichtung fuer zwangsdurchlaufdampferzeuger | |
WO2012110342A2 (de) | Verfahren zum betreiben eines solarbeheizten abhitzedampferzeugers sowie solarthermischer abhitzedampferzeuger | |
EP2673562A2 (de) | Verfahren zum betrieb eines direkt beheizten, solarthermischen dampferzeugers | |
WO2015028367A2 (de) | Betriebsverfahren zum anfahren eines solarthermisch beheizten zwangdurchlaufdampferzeugers | |
EP3269948B1 (de) | Verfahren zur anpassung der leistung einer dampfturbinen-kraftwerksanlage und dampfturbinen-kraftwerksanlage | |
EP2815085B1 (de) | Leistungsregelung und/oder frequenzregelung bei einem solarthermischen dampfkraftwerk | |
EP3014178A2 (de) | Betriebsverfahren für einen extern beheizten zwangdurchlaufdampferzeuger | |
EP2616643B1 (de) | Verfahren zur regelung einer kurzfristigen leistungserhöhung einer dampfturbine | |
EP3475539A1 (de) | Verfahren zur kurzfristigen leistungsanpassung einer dampfturbine eines gas-und dampfkraftwerks für die primärregelung | |
DE102011054618A9 (de) | Verfahren zum Betreiben eines solarthermischen Kraftwerks und solarthermisches Kraftwerk | |
DE2923288C2 (de) | ||
WO2012062708A2 (de) | Fossil befeuerter dampferzeuger | |
EP2655811B1 (de) | Verfahren zur regelung einer kurzfristigen leistungserhöhung einer dampfturbine | |
DE102012215572A1 (de) | Vorrichtung zur schnellen Wirkleistungsänderung von Kraftwerksanlagen | |
WO2013135761A2 (de) | Leistungsregelung und/oder frequenzregelung bei einem solarthermischen dampfkraftwerk | |
DE971506C (de) | Schalt- und Regeleinrichtung fuer Dampfkraftanlagen mit Zwischenueberhitzung bei veraenderlichem Zwischendruck | |
DE1426701C (de) | Anfahreinrichtung fur Zwangdurchlauf dampferzeuger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
REEP | Request for entry into the european phase |
Ref document number: 2014758811 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014758811 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 243949 Country of ref document: IL |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14913017 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: P214/2016 Country of ref document: AE |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14758811 Country of ref document: EP Kind code of ref document: A2 |