EP1319117B1 - Procede de regulation d'une turbine a vapeur et turbine a vapeur correspondante - Google Patents

Procede de regulation d'une turbine a vapeur et turbine a vapeur correspondante Download PDF

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Publication number
EP1319117B1
EP1319117B1 EP01983470A EP01983470A EP1319117B1 EP 1319117 B1 EP1319117 B1 EP 1319117B1 EP 01983470 A EP01983470 A EP 01983470A EP 01983470 A EP01983470 A EP 01983470A EP 1319117 B1 EP1319117 B1 EP 1319117B1
Authority
EP
European Patent Office
Prior art keywords
control
steam turbine
valves
valve
steam
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.)
Expired - Lifetime
Application number
EP01983470A
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German (de)
English (en)
Other versions
EP1319117A1 (fr
Inventor
Heinrich Oeynhausen
Richard Steinborn
Heribert Werthes
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
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP01983470A priority Critical patent/EP1319117B1/fr
Publication of EP1319117A1 publication Critical patent/EP1319117A1/fr
Application granted granted Critical
Publication of EP1319117B1 publication Critical patent/EP1319117B1/fr
Anticipated expiration legal-status Critical
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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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/18—Final actuators arranged in stator parts varying effective number of nozzles or guide conduits, e.g. sequentially operable valves for steam turbines
    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • 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
    • F05D2270/01—Purpose of the control system
    • F05D2270/05—Purpose of the control system to affect the output of the engine

Definitions

  • the invention relates to a method for controlling a steam turbine, in which steam is supplied to the steam turbine via at least three valves.
  • the invention further relates to a steam turbine with a valve group for controlling the steam inlet.
  • a method for controlling a steam turbine is apparent from the article " Practical Design of Speed and Power Controllers for Steam Turbines "by Johannes Dastych and Heinz Unbehauen, Martin Bennauer and Heribert Werthes, ATP 41 (1999), Issue 5 , A steam turbine is regulated according to speed or power.
  • the control circuit for speed and power as shown in Figure 2 consists of function blocks such as speed / power controller (D- / LR), live steam control valve (FD-STV), intercept valve (AF-STV), steam generator (DE) and turbine (T) and elementary blocks, such as constant, ramp and step function for the input signals.
  • the turbo set is supplied with steam from a steam generator, wherein the steam supply via control valves is controlled so that the necessary power is available.
  • the output signal of the speed / power controller acts on the main steam and interception valves.
  • Such regulation of a steam turbine requires a very complex control circuit and control valves, which allow a sufficiently fast control. So far only hydraulically driven control valves are used for steam inlet control, since only a hydraulic drive such a sufficiently fast adjustment of the valve lift is possible.
  • An actuator for a valve of a steam turbine with an electric motor drive is known from the WO98 / 13633 , Such an electric motor drive is particularly inexpensive and also reduces a fire hazard by avoiding the use of hydraulic oil.
  • Such an electric motor drive for a steam valve can be used for a quick-closing valve of a steam turbine, in which it depends only on a quick closing of the steam line.
  • the electromotive drives are unsuitable because the required valve lift positions, the operating times are too low and the valve lift settings are too inaccurate.
  • a method for controlling a steam turbine according to the preamble of claim 1 is known from DE 272 691 C known.
  • the object of the invention is to specify a method for controlling a steam turbine, which is particularly cost-effective and also offers increased reliability.
  • Another object of the invention is the specification of a steam turbine with the same advantages.
  • the object directed to a method is achieved by specifying a method for controlling a steam turbine according to the features of claim 1.
  • the invention is based on the recognition that for efficient, safe and fast control of the steam turbine by no means all valves must be designed as control valves, as was the usual view. After extensive tests, it could be proven that a combination of control valves and control valves actually allows a sufficiently safe and fast control of the steam turbine.
  • the control valves are dependent on a controller output signal set a specific value of their valve lift. The maintenance of a control difference value of about zero is taken from one, possibly even more, control valves. Thus, at least two control valves can be replaced by much simpler control valves, whereby the control loop is considerably simplified.
  • the method is designed at a power consumption of the steam turbine so that first opens the control valve and opens when exceeding a predetermined first value of a controller output signal used for the control of the control valve and in the presence of a positive control difference of the control valves. More preferably, the first value is approximately one quarter of the maximum controller output signal.
  • the positive control difference indicates that the desired value for the power or the speed has not yet been reached.
  • the task directed to a steam turbine is achieved according to the invention by specifying a steam turbine with a valve group for controlling the steam inlet according to claim 6.
  • control valves on an electric motor drive.
  • FIG. 1 schematically shows a steam turbine plant.
  • a steam turbine 1 is supplied with steam from a steam generator 3 via the supply line 5.
  • a valve group 7 is installed in the supply line 5.
  • the valve group 7 comprises a first control valve 9 and a second control valve 11.
  • the valve group 7 further comprises a first control valve 13 and a second control valve 15.
  • Via the valve group 7, the amount of steam introduced into the steam turbine 1 is regulated. This happens as a function of the desired power or speed for the steam turbine 1. This will be closer to the Figures 2 and 3 explained.
  • FIG. 2 shows the valve group 7 FIG. 1 with the associated control circuit.
  • a controller 21 generates depending on the actual value of the speed or power and the target value of the speed or power a controller output signal indicative of a control difference.
  • the regulator output signal is fed to a first servo amplifier 23 of the first control valve 9.
  • the regulator output signal is also supplied to a second servo amplifier 27 of the second control valve 11.
  • the regulator output signal is also supplied to a first frequency converter 25 of the first control valve 13.
  • the regulator output signal is also supplied to a second frequency converter 29 of the second control valve 15.
  • FIG. 3 shows in a diagram by way of example the valve lift of each of the valves 9, 11, 13, 15 in response to the controller output signal.
  • the figures are shown as a percentage of the respective maximum value.
  • the characteristic curve 9K indicates the profile of the valve lift 33 of the first regulator valve 9 as a function of the regulator output signal 31.
  • the characteristic curve 13K indicates the corresponding characteristic curve for the first control valve 13.
  • the characteristic curve 11K indicates the corresponding characteristic curve for the second control valve 11.
  • the characteristic curve 15K indicates the corresponding characteristic curve for the second control valve 15.
  • the first control valve 9 opens in proportion to the size of the regulator output signal 31. At a value of 22.5% of the regulator output signal 31 opens the first control valve 13.
  • the controller output signal 31 is the valve 33 for the first control valve 9 and for the first control valve 13 at 100%. From this point, the second control valve 11 opens. At a value of 72.5%, the second control valve 15 is finally switched on. At a value of 100% of the controller output signal 31, all valves 9, 11, 13, 15 are fully opened. The start-up, ramping up to rated speed and the synchronization takes place with the first control valve 9. The size of the control difference determines the opening speed of the control valves 13, 15. With load drops it comes to a negative control difference. The size of the negative control difference determines the closing speed of the control valves. Due to the lower dynamic range of the control valves, which are driven by an electric motor in the example shown, the response value for a switching operation "closing" during load shedding for the control valves 9, 11 and the control valves 13, 15 may be different.

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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 permettant de réguler une turbine à vapeur (1), selon lequel de la vapeur est acheminée jusqu'à la turbine à vapeur (1) par l'intermédiaire d'au moins trois soupapes. Une des soupapes est régulée comme une soupape de régulation (9, 11) et au moins deux soupapes sont pilotées comme des soupapes de commande (13, 15).

Claims (7)

  1. Procédé de régulation d'une turbine ( 1 ) à vapeur,
    dans lequel on envoie de la vapeur à la turbine ( 1 ) à vapeur par au moins trois vannes ( 9, 11, 13, 15 ), l'une des vannes ( 9, 11 ) étant régulée en vanne de régulation et au moins deux vannes ( 13, 15 ) étant commandées en vannes de commande et, pour une absorption de puissance de la turbine ( 1 ) à vapeur, on ouvre d'abord la vanne ( 9, 11 ) de régulation,
    caractérisé en ce que,
    si une première valeur fixée d'un signal ( 31 ) de sortie de régulateur utilisé pour la régulation de la vanne ( 9, 11 ) de régulation est dépassée et en présence d'une différence de régulation positive, l'une des deux vannes s'ouvre, les vannes ( 13, 15 ) de commande étant entraînées par moteur électrique.
  2. Procédé suivant la revendication 1,
    dans lequel on utilise deux vannes ( 9, 11 ) de régulation et deux vannes ( 13, 15 ) de commande.
  3. Procédé suivant la revendication 1 ou 2,
    dans lequel, lorsqu'une deuxième valeur du signal ( 31 ) de sortie du régulateur est dépassée et en présence d'une différence de régulation positive, la deuxième vanne ( 11 ) de régulation s'ouvre.
  4. Procédé suivant la revendication 1 ou 2,
    dans lequel, si une troisième valeur du signal ( 31 ) de sortie du régulateur est dépassée et en présence d'une différence de régulation positive, la deuxième vanne ( 15 ) de commande s'ouvre.
  5. Procédé suivant la revendication 1,
    dans lequel on établit une vitesse de fermeture de chacune des vannes ( 13, 15 ) de commande en fonction de la valeur présente respectivement de la différence de régulation.
  6. Turbine ( 1 ) à vapeur ayant un groupe ( 7 ) de vannes pour la régulation de l'admission de la vapeur, le groupe ( 7 ) de vannes comprenant une vanne ( 9, 11 ) de régulation et au moins deux vannes ( 13, 15 ) de commande, le groupe ( 7 ) de vannes étant constitué avec un régulateur ( 21 ),
    dans lequel le régulateur ( 21 ) est constitué pour la régulation de l'admission de la vapeur suivant un procédé suivant l'une des revendications 1 à 5.
  7. Turbine ( 1 ) à vapeur suivant la revendication 6, dans laquelle les vannes ( 13, 15 ) de commande ont un entraînement par moteur électrique.
EP01983470A 2000-09-20 2001-09-07 Procede de regulation d'une turbine a vapeur et turbine a vapeur correspondante Expired - Lifetime EP1319117B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01983470A EP1319117B1 (fr) 2000-09-20 2001-09-07 Procede de regulation d'une turbine a vapeur et turbine a vapeur correspondante

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP00120574 2000-09-20
EP00120574A EP1191190A1 (fr) 2000-09-20 2000-09-20 Procédé de régulation d'une turbine à vapeur et turbine à vapeur
PCT/EP2001/010358 WO2002025067A1 (fr) 2000-09-20 2001-09-07 Procede de regulation d'une turbine a vapeur et turbine a vapeur correspondante
EP01983470A EP1319117B1 (fr) 2000-09-20 2001-09-07 Procede de regulation d'une turbine a vapeur et turbine a vapeur correspondante

Publications (2)

Publication Number Publication Date
EP1319117A1 EP1319117A1 (fr) 2003-06-18
EP1319117B1 true EP1319117B1 (fr) 2010-06-02

Family

ID=8169887

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00120574A Withdrawn EP1191190A1 (fr) 2000-09-20 2000-09-20 Procédé de régulation d'une turbine à vapeur et turbine à vapeur
EP01983470A Expired - Lifetime EP1319117B1 (fr) 2000-09-20 2001-09-07 Procede de regulation d'une turbine a vapeur et turbine a vapeur correspondante

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00120574A Withdrawn EP1191190A1 (fr) 2000-09-20 2000-09-20 Procédé de régulation d'une turbine à vapeur et turbine à vapeur

Country Status (6)

Country Link
EP (2) EP1191190A1 (fr)
JP (1) JP4695822B2 (fr)
CN (1) CN100335751C (fr)
DE (1) DE50115502D1 (fr)
ES (1) ES2344591T3 (fr)
WO (1) WO2002025067A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1528446A1 (fr) * 2003-10-29 2005-05-04 Siemens Aktiengesellschaft Méthode et contrôleur pour le positionnement d'un actionneur et utilisation du contrôleur
DE102005033292B4 (de) * 2005-07-16 2007-07-26 I.N.T.-Rickert GmbH Ingenieurbüro für neue Technologien Vorrichtung zum Auftragen von Kleb- oder Dichtstoffen
JP2013079580A (ja) * 2011-09-30 2013-05-02 Toshiba Corp コンバインド発電設備の運転方法及びコンバインド発電設備
CN103244203B (zh) * 2013-05-21 2014-12-03 国家电网公司 一种节流阀系统及其工作方法
CN108252752B (zh) * 2017-12-22 2020-05-12 东方电气集团东方汽轮机有限公司 一种汽轮机进汽调节方法
WO2019217634A1 (fr) 2018-05-09 2019-11-14 Abb Schweiz Ag Commande de position de vanne
CN109356674A (zh) * 2018-12-25 2019-02-19 大庆特博科技发展有限公司 一种可调喷嘴数量的有机工质透平

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE272691C (fr) *
NL26523C (fr) * 1926-08-28 1900-01-01
NL29786C (fr) * 1929-12-30 1932-12-15
FR787271A (fr) * 1934-06-21 1935-09-19 Rateau Sa Dispositif de réglage des turbines à vapeur ou à gaz
US3763894A (en) * 1971-06-16 1973-10-09 Westinghouse Electric Corp Sequentially operable control valve for a steam turbine
US4245162A (en) * 1973-08-15 1981-01-13 Westinghouse Electric Corp. Steam turbine power plant having improved testing method and system for turbine inlet valves associated with downstream inlet valves preferably having feedforward position managed control
AU537607B2 (en) * 1980-12-02 1984-07-05 Hitachi Limited Combined valve for use in a reheating steam turbine
JPS57188705A (en) * 1981-05-15 1982-11-19 Toshiba Corp Steam turbine
US4604028A (en) * 1985-05-08 1986-08-05 General Electric Company Independently actuated control valves for steam turbine
JPH0261101U (fr) * 1988-10-26 1990-05-07
DE19616178C2 (de) * 1995-07-14 1998-07-16 Ver Energiewerke Ag Verfahren zum Auf- und Ablasten des Hochdruckteiles einer mit einem Duo-Dampfkesselblock betriebenen Dampfturbine
DE59709519D1 (de) * 1996-09-26 2003-04-17 Siemens Ag Ventil einer turbine

Also Published As

Publication number Publication date
DE50115502D1 (de) 2010-07-15
CN1461374A (zh) 2003-12-10
JP4695822B2 (ja) 2011-06-08
CN100335751C (zh) 2007-09-05
WO2002025067A1 (fr) 2002-03-28
JP2004518050A (ja) 2004-06-17
EP1319117A1 (fr) 2003-06-18
ES2344591T3 (es) 2010-09-01
EP1191190A1 (fr) 2002-03-27

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