EP2295733A1 - Centrale et procédé de fonctionnement d'une centrale - Google Patents

Centrale et procédé de fonctionnement d'une centrale Download PDF

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Publication number
EP2295733A1
EP2295733A1 EP09010420A EP09010420A EP2295733A1 EP 2295733 A1 EP2295733 A1 EP 2295733A1 EP 09010420 A EP09010420 A EP 09010420A EP 09010420 A EP09010420 A EP 09010420A EP 2295733 A1 EP2295733 A1 EP 2295733A1
Authority
EP
European Patent Office
Prior art keywords
power plant
turbine
generator
electrical load
water
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Withdrawn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
EP09010420A
Other languages
German (de)
English (en)
Inventor
Ingo Förster
Arne Dr. Grassmann
Thomas Helmis
Christian Musch
Heinrich Dr. Stüer
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP09010420A priority Critical patent/EP2295733A1/fr
Priority to CN201080035691.9A priority patent/CN102472118B/zh
Priority to EP10739368A priority patent/EP2464832A1/fr
Priority to PCT/EP2010/061392 priority patent/WO2011018404A1/fr
Publication of EP2295733A1 publication Critical patent/EP2295733A1/fr
Withdrawn legal-status Critical Current

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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
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting

Definitions

  • the invention relates to a power plant comprising a turbine and a generator driven by the turbine, which generates and delivers electrical energy to a network and a switch, which connects the generator with an electrical load.
  • the invention further relates to a method for running a power plant comprising a turbine and a generator connected to a grid.
  • Power plants are usually divided into base-load, medium-load and peak-load systems. Depending on the assignment to the aforementioned plant types, the components of the plant are claimed differently. This means that the components are permanently stressed in a base load system. Unlike the components in a peak load system, which are used rather sporadically.
  • the base load systems usually comprise a turbine designed as a steam turbine and a turbine driven by the generator, which is designed as an electric generator and emits an electrical energy to a network, in particular an electrical consumer network.
  • This electrical power grid is supplied by several power plants with electrical energy, the frequency of the electrical energy must be strictly adhered to and is at 50 Hz and 60 Hz.
  • the steam turbines are often used in continuous operation, they must be shut down for inspection or maintenance.
  • the electric generator must first be decoupled from the grid. The generator then runs idle with the steam turbine.
  • the stored kinetic rotational energy of the shaft is converted into bearing friction and ventilation losses, which reduces the speed of the shaft. Since the bearing friction and Other responsible for the reduction of speed losses are small compared to the rotational energy stored in the shaft resulting in long flow times of the turbine, which can be up to one hour.
  • the invention begins, whose object is to provide a method and a power plant, which makes it possible to accelerate the shutdown of the turbine.
  • a power plant comprising a turbine and a generator driven by the turbine which generates and delivers electrical energy to a network and a switch which connects the generator to an electrical consumer, the electrical consumer as a resistance element for heating water is formed.
  • the electrical load formed as a resistance element for heating water is connected to the generator as soon as the generator is decoupled from the mains.
  • the frequency of the generator is usually no longer network synchronous after decoupling from the electrical network and should therefore not be connected to the electrical network for this reason.
  • the no longer grid-synchronous electrical power is expediently driven off via the resistance element.
  • the object directed to the method is achieved by a method for shutting down a power plant comprising a turbine and a generator which is connected to a network, wherein the generator is connected after decoupling of the network to an electrical load.
  • the resistance element of an immersion heater is formed. Further advantageously, the immersion heater is arranged for heating water.
  • the electrical energy that is released via the immersion heater quasi retroactive, not released to the environment, but converted to heat water.
  • the electrical load is arranged in the so-called hotwell in the capacitor.
  • Hotwell is the condensate collector.
  • FIG. 1 shows a schematically illustrated power plant 1.
  • This power plant 1 comprises a turbine 2, which is designed as a steam turbine.
  • the steam turbine 2 is supplied with live steam via a steam inlet 3 and a live steam line 4.
  • the thermal energy of the live steam is converted into kinetic rotational energy.
  • the rotational kinetic energy is used to drive an electric generator 5.
  • the generator 5 is coupled in continuous operation to an electrical network, the frequency here being 50 Hz for the European market and 60 Hz for the US market.
  • Further components are shown that are required for a power plant 1, such as a condenser 7, a steam generator 8 and a pump 9.
  • the live steam is generated, which flows via the main steam line 4 and the steam inlet 3 into the steam turbine 2 ,
  • the condenser 7 the steam flowing out of the steam turbine is again condensed to water, the water vapor escaping from the steam turbine 2 condensing via an external cooling line 10.
  • the condensate converted to water is finally fed via a pump 9 to the steam generator 8.
  • the steam turbine 2 is now traversed as follows.
  • a switch 11 of the electric generator 5 is connected to the electrical network 6 and connected to an electrical load 12, which in the FIG. 1 is shown by the dashed line 13.
  • the shutdown of the turbine 2 is initially done by simply switching off the steam supply. This means that the steam generated in the steam generator 8 is blocked by a valve and is no longer passed through the steam turbine 2.
  • the electrical load 12 connected to the generator 5 exerts, as it were, a braking action on the electric generator 5, which has an effect on the steam turbine 2 as a further braking effect. This shortens the downtime of the steam turbine.
  • the coming out of the electric generator 5 electrical energy is no longer network synchronous after switching the switch 11 to the electrical load 12. Since the electrical load is operated in stand-alone mode and is not connected to other electrical loads to transmit energy, non-grid-synchronous electrical power is harmless.
  • the electrical load 12 is designed as a resistance element and can be used as a quasi-oversized immersion heater corresponding to the heating of water. This can be done as in FIG. 2 shown, the immersion heater 12 are placed directly in the condensate in the so-called hot well to evaporate the condensate. This steam is then knocked off again as water at the condenser tubes 14, whereby thus the energy is discharged from the power plant 1 to the environment.
  • the electrical load 12 designed as immersion heater can also be located in a water chamber of the cooling water circuit, which, however, is in 1 and FIG. 2 not shown, are arranged.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Eletrric Generators (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Control Of Turbines (AREA)
EP09010420A 2009-08-12 2009-08-12 Centrale et procédé de fonctionnement d'une centrale Withdrawn EP2295733A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09010420A EP2295733A1 (fr) 2009-08-12 2009-08-12 Centrale et procédé de fonctionnement d'une centrale
CN201080035691.9A CN102472118B (zh) 2009-08-12 2010-08-05 发电厂设备和用于运行发电厂设备的方法
EP10739368A EP2464832A1 (fr) 2009-08-12 2010-08-05 Centrale électrique et procédé pour exploiter une centrale électrique
PCT/EP2010/061392 WO2011018404A1 (fr) 2009-08-12 2010-08-05 Centrale électrique et procédé pour exploiter une centrale électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09010420A EP2295733A1 (fr) 2009-08-12 2009-08-12 Centrale et procédé de fonctionnement d'une centrale

Publications (1)

Publication Number Publication Date
EP2295733A1 true EP2295733A1 (fr) 2011-03-16

Family

ID=43003476

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09010420A Withdrawn EP2295733A1 (fr) 2009-08-12 2009-08-12 Centrale et procédé de fonctionnement d'une centrale
EP10739368A Withdrawn EP2464832A1 (fr) 2009-08-12 2010-08-05 Centrale électrique et procédé pour exploiter une centrale électrique

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10739368A Withdrawn EP2464832A1 (fr) 2009-08-12 2010-08-05 Centrale électrique et procédé pour exploiter une centrale électrique

Country Status (3)

Country Link
EP (2) EP2295733A1 (fr)
CN (1) CN102472118B (fr)
WO (1) WO2011018404A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2831381B1 (fr) 2012-03-29 2018-10-24 Ansaldo Energia IP UK Limited Procédé de fonctionnement d'un moteur à turbine après l'arrêt de flamme

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447482A1 (fr) * 2010-10-29 2012-05-02 Siemens Aktiengesellschaft Procédé destiné à l'arrêt d'un turbogénérateur
JP5964229B2 (ja) * 2012-12-28 2016-08-03 三菱重工業株式会社 発電システム
EP3460206A1 (fr) 2017-09-21 2019-03-27 Siemens Aktiengesellschaft Procédé de fonctionnement d'une turbine à vapeur
EP3647553B1 (fr) * 2018-11-05 2022-12-28 Orcan Energy AG Alimentation d'un convertisseur d'énergie électromécanique en énergie électrique à partir d'un processus de circuit thermodynamique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007389A1 (fr) * 1978-05-08 1980-02-06 Carrier Corporation Système et procédé de récupération d'énergie
DE19839636A1 (de) * 1998-08-31 2000-03-02 Asea Brown Boveri Kraftwerk mit einem von einer Turbine angetriebenen Generator sowie Verfahren zum Betrieb eines solchen Kraftwerkes
DE202004003772U1 (de) * 2004-03-09 2004-06-03 Enginion Ag Anordnung zur Drehzahlstabilisierung von Gleichstromgeneratoren
DE102004016450A1 (de) * 2004-03-31 2005-10-20 Alstom Technology Ltd Baden Generatorbeschaltung und Verfahren zur Erzeugung einer regelbaren Bremsleistung in einer Turbinenanlage
WO2009038562A2 (fr) * 2007-09-19 2009-03-26 Utc Power Corporation Prévention d'emballement d'un générateur entraîné par une turbine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201004553Y (zh) * 2007-01-08 2008-01-09 李永吉 电力输配电系统弧光过电压限制及小电流接地选线综合装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007389A1 (fr) * 1978-05-08 1980-02-06 Carrier Corporation Système et procédé de récupération d'énergie
DE19839636A1 (de) * 1998-08-31 2000-03-02 Asea Brown Boveri Kraftwerk mit einem von einer Turbine angetriebenen Generator sowie Verfahren zum Betrieb eines solchen Kraftwerkes
DE202004003772U1 (de) * 2004-03-09 2004-06-03 Enginion Ag Anordnung zur Drehzahlstabilisierung von Gleichstromgeneratoren
DE102004016450A1 (de) * 2004-03-31 2005-10-20 Alstom Technology Ltd Baden Generatorbeschaltung und Verfahren zur Erzeugung einer regelbaren Bremsleistung in einer Turbinenanlage
WO2009038562A2 (fr) * 2007-09-19 2009-03-26 Utc Power Corporation Prévention d'emballement d'un générateur entraîné par une turbine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2831381B1 (fr) 2012-03-29 2018-10-24 Ansaldo Energia IP UK Limited Procédé de fonctionnement d'un moteur à turbine après l'arrêt de flamme

Also Published As

Publication number Publication date
EP2464832A1 (fr) 2012-06-20
CN102472118A (zh) 2012-05-23
CN102472118B (zh) 2016-03-02
WO2011018404A1 (fr) 2011-02-17

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