EP0100532A2 - Power plant control method - Google Patents
Power plant control method Download PDFInfo
- Publication number
- EP0100532A2 EP0100532A2 EP83107456A EP83107456A EP0100532A2 EP 0100532 A2 EP0100532 A2 EP 0100532A2 EP 83107456 A EP83107456 A EP 83107456A EP 83107456 A EP83107456 A EP 83107456A EP 0100532 A2 EP0100532 A2 EP 0100532A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- turbine
- generator
- signal
- steam generator
- 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
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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
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
- F01K3/22—Controlling, e.g. starting, stopping
Definitions
- the controlled system is particularly slow with coal-fired steam generators and also has an integral behavior.
- the result is that the admission pressure regulator may only be switched on weakly, that is to say with a small proportionality constant and a long reset time, so that faults are corrected very slowly.
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren und eine Einrichtung zur Leistungsregelung an einem aus Zwangsdurchlauf - Dampferzeuger, Dampfturbine und Generator bestehenden Kraftwerksblock.The invention relates to a method and a device for power control on a power plant block consisting of a once-through steam generator, steam turbine and generator.
Bei dem bisher üblichen Regelverfahren wird die von der Turbine abgegebene elektrische Leistung von einem PI-Regler, dem Turbinenregler, geregelt. Er wirkt direkt auf das Turbineneinlaßventil.In the previously common control method, the electrical power output by the turbine is controlled by a PI controller, the turbine controller. It acts directly on the turbine inlet valve.
Der Druck im Dampferzeuger vor dem Turbinenventil, der sogenannte Vordruck, wird von einem PID-Regler geregelt. Der Stelleingriff erfolgt in die Energiezufuhr der Dampferzeugung, also auf den Brennstoff- und Luftstrom oder auf Brennstoff-Luft- und Speisewasserstrom.The pressure in the steam generator upstream of the turbine valve, the so-called pre-pressure, is regulated by a PID controller. The control intervention takes place in the energy supply of the steam generation, that is to say in the fuel and air flow or in the fuel-air and feed water flow.
Die Regelstrecke ist insbesondere bei kohlebeheizten Dampferzeugern sehr träge und hat darüber hinaus integrales Verhalten. Die Folge ist, daß der Vordruckregler nur schwach aufgeschaltet werden darf, also mit kleiner Proportionalitätskonstante und großer Nachstellzeit, so daß Störungen sehr langsam ausgeregelt werden.The controlled system is particularly slow with coal-fired steam generators and also has an integral behavior. The result is that the admission pressure regulator may only be switched on weakly, that is to say with a small proportionality constant and a long reset time, so that faults are corrected very slowly.
Es besteht die Aufgabe, das bekannte Regelverfahren so zu verbessern, daß es erheblich schneller auf Störungen bzw. Änderungen in der Regelstrecke reagiert.The object is to improve the known control method in such a way that it responds considerably more quickly to disturbances or changes in the controlled system.
Eine Lösung der gestellten Aufgabe, wird in dem im Anspruch 1 angegebenen Verfahren gesehen. Durch die dynamische Korrektur, in der das Speicherverhalten und Dampferzeugungsverhalten des Dampferzeugers nachgebildet ist, wird der Vordruck so vorgesteuert, daß die Regelstrecke "Dampferzeuger und dynamisch vorgesteuerter Turbinenregelkreis" aus der Sicht des Leistungsreglers einfaches Verzögerungsverhalten mit einer geringen Zeitkonstante hat. Der Leistungsregelkreis ist folglich unkritisch und sehr schnell. In der Praxis hat sich gezeigt, daß die Nachstellzeit des Leistungsreglers etwa um den Faktor 100 verringert werden kann.A solution to the problem is seen in the method specified in claim 1. Through the dynamic correction, in which the storage behavior and steam generation behavior of the steam generator is simulated, the admission pressure is pre-controlled in such a way that the controlled system From the point of view of the power controller, "steam generator and dynamically pilot-controlled turbine control loop" has simple deceleration behavior with a low time constant. The power control loop is consequently uncritical and very fast. In practice it has been shown that the reset time of the power controller can be reduced by a factor of about 100.
Zur Erläuterung der Erfindung ist in der Figur ein Beispiel einer Schaltungsanordnung zur Durchführung des Verfahrens dargestellt und im folgenden beschrieben.To explain the invention, an example of a circuit arrangement for carrying out the method is shown in the figure and described below.
Der Kraftwerksblock besteht aus dem Zwangsdurchlauf-Dampferzeuger 1, der Dampfturbine 2 und dem elektrischen Generator 3.The power plant block consists of the once-through steam generator 1, the steam turbine 2 and the electric generator 3.
In dem Dampferzeuger 1 wird das über die Leitung 4 zugeführte Speisewasser mit Hilfe des über die Leitung 5 zugeführten Brennstoff- bzw. Brennstoff-Luftgemischs verdampft und mit dem Vordruck pi über das Einlaßventil 6 der Dampfturbine 2 zugeführt.In the steam generator 1, the feed water supplied via line 4 is evaporated with the aid of the fuel or fuel-air mixture supplied via
Die vom Generator 3 abgegebene elektrische Leistung Peli wird in einer Vergleichsstelle 7 mit einem in dem Sollwertsteller 8 eingestellten Leistungssollwert Pels verglichen. Die resultierende Regeldifferenz dPel wird einem Leistungsregler 9 mit PID-Verhalten zugeführt, dessen Ausgangsgröße als Stellsignal yL auf ein in die Energiezufuhr 5 eingreifendes Stellglied 10 und evtl. auf ein in den Speisewasserstrom eingreifendes Stellglied wirkt.The electrical power P el i emitted by the generator 3 is compared in a comparison point 7 with a power target value P el s set in the
Parallel dazu wird das Stellsignal yL des Leistungsreglers 9 dem Positiveingang eines Differenzglieds 11 und dem Eingang eines Übertragungsgliedes ,12 höherer Ordnung zugeführt, in welchem das Dampferzeugungsverhalten der Regelstrecke "Dampferzeuger" elektrisch nachgebildet wird. Das Ausgangssignal des Funktionsgenerators 12 ist dem Negativeingang des Differenzgliedes 11 aufgeschaltet, dessen Ausgang mit dem Eingang eines Verzögerungsgliedes 13 erster Ordnung verbunden ist, welches das Speicherverhalten des Dampferzeugers elektrisch nachbildet.In parallel, the control signal y L of the power controller 9 is fed to the positive input of a
Der das Druckkorrektursignal pk führende Ausgang des Verzögerungsgliedes 13 ist mit dem Negativeingang eines zweiten Differenzgliedes 14 verbunden, an dessen Positiveingang der Vordruck-Sollwert p s geschaltet ist. Die auf diese Weise dynamisch korrigierte Führungsgröße "Vordruck" für die Turbinenregelung wird einem Vordruckregler 15 mit PI-Verhalten zugeführt, seine Regelgröße ist der an einer Druckmeßstelle 16 in der Dampfleitung zur Dampfturbine 2 gemessene Istwert pi des Vordrucks. Das Stellsignal yT des Turbinenreglers 15 betätigt das Turbineneinlaßventil 6 und beeinflußt somit den Dampfdurchsatz durch die Turbine. Dieser Turbinenregelkreis ist schnell und unkritisch, so daß in Verbindung mit dem Leistungsregelkreis, der ebenfalls schnell und unkritisch ist, ein weitgehend verzögerungsfreies Ansprechen der Gesamtregelung des Kraftwerksblocks auf Änderungen der Führungs- bzw. Regelgröße "elektrische Leistung" erfolgt.The output of the
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83107456T ATE37588T1 (en) | 1982-08-03 | 1983-07-28 | METHOD AND DEVICE FOR POWER CONTROL AT A POWER PLANT UNIT. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3228996 | 1982-08-03 | ||
DE19823228996 DE3228996A1 (en) | 1982-08-03 | 1982-08-03 | METHOD AND DEVICE FOR CONTROLLING THE POWER ON A POWER PLANT |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0100532A2 true EP0100532A2 (en) | 1984-02-15 |
EP0100532A3 EP0100532A3 (en) | 1985-07-03 |
EP0100532B1 EP0100532B1 (en) | 1988-09-28 |
Family
ID=6170036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83107456A Expired EP0100532B1 (en) | 1982-08-03 | 1983-07-28 | Power plant control method |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0100532B1 (en) |
AT (1) | ATE37588T1 (en) |
AU (1) | AU564160B2 (en) |
DE (2) | DE3228996A1 (en) |
IN (1) | IN158826B (en) |
ZA (1) | ZA835638B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3500482A1 (en) * | 1985-01-09 | 1986-07-10 | MAN Gutehoffnungshütte GmbH, 4200 Oberhausen | Method and device for controlling the reference variable of a regulating device which has two regulators |
DE3632041A1 (en) * | 1985-10-03 | 1987-04-09 | Bbc Brown Boveri & Cie | Process and device for regulating the output of a steam power station unit |
DE4405350A1 (en) * | 1993-08-13 | 1995-02-16 | Abb Patent Gmbh | Method for determining the live steam mass flow in the drive steam pipe of a steam generating station (steam power station, steam power plant) |
EP0684366A1 (en) * | 1994-05-26 | 1995-11-29 | ABBPATENT GmbH | Process and system for the control and regulation of the power of a steam power plant |
EP1647677A1 (en) * | 2004-10-12 | 2006-04-19 | Siemens Aktiengesellschaft | Method for simulating the operating characteristics of a steam turbine plant |
EP1647676A1 (en) * | 2004-10-12 | 2006-04-19 | Siemens Aktiengesellschaft | Method for simulating the operating characteristics of a steam turbine plant |
WO2012160206A1 (en) * | 2011-05-26 | 2012-11-29 | Electricite De France | Control system for multivariable regulation of a fossil fuel power station |
WO2015028366A3 (en) * | 2013-08-28 | 2015-05-07 | Siemens Aktiengesellschaft | Operating method for an externally heated once-through steam generator |
CN112947048A (en) * | 2021-01-28 | 2021-06-11 | 国网湖南省电力有限公司 | Control method, system and medium of multivariable coupling control system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004014283B4 (en) * | 2004-03-22 | 2006-12-14 | Amovis Gmbh | Method for operating an independent cycle process |
PL3269948T3 (en) * | 2016-07-15 | 2022-07-18 | Carbon-Clean Technologies Gmbh | Method for the adaptation of the performance of a steam turbine power plant installation and steam turbine power plant installation |
CN110761858B (en) * | 2018-07-25 | 2022-03-08 | 中国石油化工股份有限公司 | Reheating generator set simulation system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE942514C (en) * | 1953-07-31 | 1956-05-03 | Siemens Ag | Overflow control for steam engines |
CH462201A (en) * | 1964-12-29 | 1968-09-15 | Combustion Eng | Method for operating a steam generator |
FR2308136A1 (en) * | 1975-04-17 | 1976-11-12 | Sulzer Ag | POWER REGULATOR FOR THERMAL POWER GENERATION PLANTS |
-
1982
- 1982-08-03 DE DE19823228996 patent/DE3228996A1/en not_active Withdrawn
-
1983
- 1983-07-26 IN IN927/CAL/83A patent/IN158826B/en unknown
- 1983-07-28 EP EP83107456A patent/EP0100532B1/en not_active Expired
- 1983-07-28 DE DE8383107456T patent/DE3378136D1/en not_active Expired
- 1983-07-28 AT AT83107456T patent/ATE37588T1/en not_active IP Right Cessation
- 1983-08-02 AU AU17507/83A patent/AU564160B2/en not_active Ceased
- 1983-08-02 ZA ZA835638A patent/ZA835638B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE942514C (en) * | 1953-07-31 | 1956-05-03 | Siemens Ag | Overflow control for steam engines |
CH462201A (en) * | 1964-12-29 | 1968-09-15 | Combustion Eng | Method for operating a steam generator |
FR2308136A1 (en) * | 1975-04-17 | 1976-11-12 | Sulzer Ag | POWER REGULATOR FOR THERMAL POWER GENERATION PLANTS |
Non-Patent Citations (1)
Title |
---|
REVUE TECHNIQUE SULZER, Band 57, Januar 1975, Seiten 57-64, WINTERTHUR, F. LAUBLI et al.: "Dynamique de la chaudiere monotubulaire de 430 t/h de la troisieme tranche a charbon et mazout de la centrale de Naantali (FINLANDE)". * SEITE &+; FIGUR /; SEITE 62, FIGUR 9; SEITE 63, SPALTE 1, ZEILEN 15-32 * * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3500482A1 (en) * | 1985-01-09 | 1986-07-10 | MAN Gutehoffnungshütte GmbH, 4200 Oberhausen | Method and device for controlling the reference variable of a regulating device which has two regulators |
DE3632041A1 (en) * | 1985-10-03 | 1987-04-09 | Bbc Brown Boveri & Cie | Process and device for regulating the output of a steam power station unit |
DE4405350A1 (en) * | 1993-08-13 | 1995-02-16 | Abb Patent Gmbh | Method for determining the live steam mass flow in the drive steam pipe of a steam generating station (steam power station, steam power plant) |
EP0684366A1 (en) * | 1994-05-26 | 1995-11-29 | ABBPATENT GmbH | Process and system for the control and regulation of the power of a steam power plant |
EP1647677A1 (en) * | 2004-10-12 | 2006-04-19 | Siemens Aktiengesellschaft | Method for simulating the operating characteristics of a steam turbine plant |
EP1647676A1 (en) * | 2004-10-12 | 2006-04-19 | Siemens Aktiengesellschaft | Method for simulating the operating characteristics of a steam turbine plant |
WO2012160206A1 (en) * | 2011-05-26 | 2012-11-29 | Electricite De France | Control system for multivariable regulation of a fossil fuel power station |
FR2975797A1 (en) * | 2011-05-26 | 2012-11-30 | Electricite De France | CONTROL SYSTEM FOR MULTIVARIZABLE CONTROL OF FLAME THERMAL POWER PLANT |
RU2611113C2 (en) * | 2011-05-26 | 2017-02-21 | Электрисите Де Франс | Control system for thermal power plant multivariant control |
WO2015028366A3 (en) * | 2013-08-28 | 2015-05-07 | Siemens Aktiengesellschaft | Operating method for an externally heated once-through steam generator |
CN112947048A (en) * | 2021-01-28 | 2021-06-11 | 国网湖南省电力有限公司 | Control method, system and medium of multivariable coupling control system |
CN112947048B (en) * | 2021-01-28 | 2023-08-04 | 国网湖南省电力有限公司 | Control method, system and medium of multivariable coupling control system |
Also Published As
Publication number | Publication date |
---|---|
ATE37588T1 (en) | 1988-10-15 |
DE3228996A1 (en) | 1984-02-09 |
EP0100532B1 (en) | 1988-09-28 |
AU564160B2 (en) | 1987-08-06 |
EP0100532A3 (en) | 1985-07-03 |
AU1750783A (en) | 1984-02-09 |
DE3378136D1 (en) | 1988-11-03 |
IN158826B (en) | 1987-01-31 |
ZA835638B (en) | 1984-04-25 |
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