EP1953350A2 - Aube de turbine - Google Patents

Aube de turbine Download PDF

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Publication number
EP1953350A2
EP1953350A2 EP07000140A EP07000140A EP1953350A2 EP 1953350 A2 EP1953350 A2 EP 1953350A2 EP 07000140 A EP07000140 A EP 07000140A EP 07000140 A EP07000140 A EP 07000140A EP 1953350 A2 EP1953350 A2 EP 1953350A2
Authority
EP
European Patent Office
Prior art keywords
steam
power plant
steam power
pressure
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.)
Withdrawn
Application number
EP07000140A
Other languages
German (de)
English (en)
Other versions
EP1953350A3 (fr
Inventor
Stefan Dr. Glos
Matthias Heue
Ernst-Wilhelm Dr. Pfitzinger
Norbert Pieper
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Priority to EP07000140A priority Critical patent/EP1953350A3/fr
Priority to PCT/EP2007/064237 priority patent/WO2008080854A2/fr
Priority to US12/521,589 priority patent/US8387388B2/en
Priority to EP07857858.0A priority patent/EP2100010B1/fr
Priority to CN2007800492663A priority patent/CN101573511B/zh
Priority to JP2009544384A priority patent/JP5027887B2/ja
Publication of EP1953350A2 publication Critical patent/EP1953350A2/fr
Publication of EP1953350A3 publication Critical patent/EP1953350A3/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Withdrawn legal-status Critical Current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 method for increasing the steam mass flow of a high-pressure steam turbine of a steam power plant, in particular a steam power plant with reheat during a start-up phase of the steam power plant, in particular during idling of the steam power plant.
  • the boiler of the power plant When starting or starting up a fossil-fired power plant, the boiler of the power plant is first driven to minimum load (usually 30 to 40%).
  • the live steam generated during this start-up phase is usually initially bypassed by the steam turbine during (so-called) bypass operation.
  • the live steam In systems with reheat, the live steam is passed through a high-pressure diverter station, sprayed to a lower temperature level and then fed into the cold reheat line.
  • the steam, which leaves the hot strand of the reheat is passed through a medium-pressure Umleitstation and passed after cooling by injection water into the condenser.
  • a high pressure level in the reheat (usually about 20-30 bar) is an effective cooling of the acted upon with flue gas reheater pipes is guaranteed.
  • the invention has for its object to provide a method by which can be reduced without great effort and cost as possible before adjusting the network synchronization during a start-up phase of a steam power plant high temperatures.
  • This object is achieved according to the invention with the aforementioned method for increasing the steam mass flow of a high-pressure steam turbine of a steam power plant, in particular a reheat during a start-up phase, and in particular during idling of the steam power plant, in which a generator of the steam power plant before synchronization with a power supply network at least one electrical load is switched on.
  • the idling power is artificially increased on the electrical side, accompanied by a corresponding increase in the steam mass flow already before synchronization with a power supply network.
  • the high-pressure turbine of a steam power plant can produce more power with an increased steam mass flow such that the generator is already energized early and electrical consumers are switched on before the grid synchronization.
  • This electrically generated power is delivered to electrical consumers, preferably in the form of resistors. which must be cooled accordingly.
  • the electrical load preferably in the form of an electrical resistance
  • the electrical load is arranged in a feedwater tank of the steam power plant in order to cool the electrical load.
  • the relatively cold inflowing condensate must be heated to saturated steam temperature to the pressure required for the degassing of usually 5 to 10 bar.
  • the associated energy can be used, so that ultimately a fuel saving can be achieved.
  • the electrical load is arranged in a condensate collecting tank of a condenser of the steam power plant.
  • the arrangement of the electrical consumers in the condensate collection container of the condenser (hotwell) has no influence on the heat output of the condenser, since the mass flow through a corresponding medium-pressure Umleitstation decreases accordingly.
  • a cooling of the electrical load can also be achieved by placing the electrical load in the cooling water of the steam power plant, wherein both main cooling water and secondary cooling water can be used for cooling.
  • the invention further relates to a steam power plant, with which the inventive method is feasible, with a generator, a high-pressure steam turbine and at least one electrical load, which can be connected during a start-up phase of the steam power plant to the generator to before synchronization of the generator with To increase a power supply network, a steam mass flow of the high-pressure steam turbine.
  • the electrical load is preferably arranged in a feedwater tank of the steam power plant, in a Kondensationsammel constituteer a condenser of the steam power plant or in the cooling water of the steam power plant.
  • FIG. 1 shows the structure of a steam power plant according to the invention.
  • Fig. 1 schematically shows the structure of a steam power plant 10 according to the invention.
  • the steam power plant 10 includes, inter alia, a boiler 12, a high pressure turbine 14, a medium pressure turbine 16, a low pressure turbine 18, a generator 20, a condenser 22 with reservoir 24, a feedwater tank 26 with degasser, main steam lines 28 and a support line 30th
  • the boiler 12 When starting or starting up the steam power plant 10, the boiler 12 is initially driven to minimum load (usually 30-40%), wherein the steam generated is usually initially passed past the high-pressure turbine 14 (bypass operation).
  • the bypass operation is realized here by closing the arranged in the steam inflow of the high-pressure turbine 14 quick-closing valve 32 and control valve 34, the live steam is passed through a high-pressure Umleitstation 36, sprayed to a lower temperature level and then a reheatening 38 is supplied, and Although initially the cold strand 40 of the reheat.
  • the steam leaving the hot leg 42 of the ZÜ is passed through a medium pressure diverter station 44 out and passed after cooling by injection water into the condenser 22.
  • the high-pressure turbine 14 is accelerated to nominal speed from this bypass operation after the quick-closing valve 32 or control valve 34 has been opened, the high pressure in the cold strand 40 of the reheating at the outlet of the high-pressure turbine 14 leads to temperatures which are particularly high. or warm start are significantly higher than in rated load operation.
  • the reason for this is low temperature degradation or ventilation in the high pressure turbine 14 at low steam mass flows.
  • An increase in this idling mass flow is not possible due to the speed control, since the turbine-generator train can still deliver power to the grid. Only after the synchronization with the network, the power and thus the mass flow can be increased, but the temperature differences between the steam and the turbine components must not be too large.
  • the exhaust area of the high pressure turbine 14 and the cold reheat line 40 this means that they are exposed to greatly elevated and rapidly changing temperatures, which may involve the use of expensive materials to design the exhaust steam section of the high pressure turbine 14 and cold leg 40 require reheat.
  • At least one electrical load in the form of an electrical resistor 46 is switchably coupled to the generator 20 (see dotted lines in FIG. 1 ).
  • the resistor 46 and the resistors 46 may be arranged according to the invention for their cooling in the feedwater tank 26, in the condensate collection tank 24 or in the cooling water. If, according to the invention, the generator 20 is prematurely energized before synchronization of the generator 20 with a power supply network, one or more can several of the electrical resistors 46 are switched on. Thus, the idling power on the electrical side is artificially increased even before synchronization, along with a corresponding increase in the steam mass flow.
  • the tubes of the reheat 38 are already cooled more, since less steam has to be drawn from the cold strand 40 of the reheat over the support line 30 onto the feedwater tank 26 to ensure degassing.
  • the idle now higher mass flow through the high-pressure turbine 14 leads to a greater degradation of the enthalpy and thus lower high-pressure Abdampfemperaturen. For example, increasing the idle power from 5 to 15 MW (assuming live steam temperature 700 ° C, pressure in cold leg 40 of reheat 20 bar) would reduce the high pressure steaming temperature from 580 ° C to 510 ° C.

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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 Turbines (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
EP07000140A 2007-01-04 2007-01-04 Aube de turbine Withdrawn EP1953350A3 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP07000140A EP1953350A3 (fr) 2007-01-04 2007-01-04 Aube de turbine
PCT/EP2007/064237 WO2008080854A2 (fr) 2007-01-04 2007-12-19 Aube de turbine
US12/521,589 US8387388B2 (en) 2007-01-04 2007-12-19 Turbine blade
EP07857858.0A EP2100010B1 (fr) 2007-01-04 2007-12-19 Procédé pour accroître le débit de vapeur dans une turbine à vapeur haute pression d'une centrale lors de la mise en route de la centrale
CN2007800492663A CN101573511B (zh) 2007-01-04 2007-12-19 蒸汽发电设备和提高其高压汽轮机的蒸汽质量流的方法
JP2009544384A JP5027887B2 (ja) 2007-01-04 2007-12-19 蒸気タービン発電所並びに蒸気タービン発電所の高圧タービンの蒸気質量流量を増大する方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07000140A EP1953350A3 (fr) 2007-01-04 2007-01-04 Aube de turbine

Publications (2)

Publication Number Publication Date
EP1953350A2 true EP1953350A2 (fr) 2008-08-06
EP1953350A3 EP1953350A3 (fr) 2009-01-07

Family

ID=39580471

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07000140A Withdrawn EP1953350A3 (fr) 2007-01-04 2007-01-04 Aube de turbine
EP07857858.0A Not-in-force EP2100010B1 (fr) 2007-01-04 2007-12-19 Procédé pour accroître le débit de vapeur dans une turbine à vapeur haute pression d'une centrale lors de la mise en route de la centrale

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07857858.0A Not-in-force EP2100010B1 (fr) 2007-01-04 2007-12-19 Procédé pour accroître le débit de vapeur dans une turbine à vapeur haute pression d'une centrale lors de la mise en route de la centrale

Country Status (5)

Country Link
US (1) US8387388B2 (fr)
EP (2) EP1953350A3 (fr)
JP (1) JP5027887B2 (fr)
CN (1) CN101573511B (fr)
WO (1) WO2008080854A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2918796A1 (fr) * 2014-03-13 2015-09-16 Siemens Aktiengesellschaft Centrale à vapeur dotée d'un générateur de vapeur comprenant une armature de maintien de pression à tambour
EP2529087A4 (fr) * 2010-01-27 2017-03-08 Nanjing TICA Air-conditioning Co., Ltd. Système de production d'énergie à suivi de charge à cycle de rankine à caloporteur organique (orc), et procédé d'exploitation
EP3074613A4 (fr) * 2013-11-26 2017-07-05 Volvo Truck Corporation Chauffage supplémentaire pour récupération de chaleur perdue
DE102019216616A1 (de) * 2019-10-29 2021-04-29 Siemens Aktiengesellschaft Anlage mit elektrischem Speicher zum schnelleren Anfahren einer Dampfturbine und Verfahren

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4240155B1 (ja) * 2008-03-06 2009-03-18 三浦工業株式会社 蒸気システム
NO331329B1 (no) * 2010-02-18 2011-11-28 Energreen As Fluidkjolt lastmotstand for bruk ved energiproduksjon og anvendelse av denne
WO2013107557A2 (fr) * 2012-01-19 2013-07-25 Siemens Aktiengesellschaft Système de production de vapeur auxiliaire pour une centrale électrique
EP2738458B2 (fr) * 2012-11-30 2023-05-24 Lumenion AG Centrale électrique et procédé de génération de courant électrique
DE102013205053B4 (de) * 2013-03-21 2015-05-07 Kraftwerke Mainz-Wiesbaden AG Verfahren zum Betrieb eines einen Wasser-Dampf-Kreislauf aufweisenden Kraftwerks
CN105781641B (zh) * 2015-07-04 2018-03-20 佛山恒益发电有限公司 火力发电厂发电设备以及电网同步控制方法
CN105041388B (zh) * 2015-07-04 2017-04-05 国网山东省电力公司滨州供电公司 一种发电设备以及发电设备的电网同步方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432960C1 (de) * 1994-09-16 1995-11-30 Steinmueller Gmbh L & C Verfahren zum Betrieb eines Dampfkraftwerkes und Dampfkraftwerk
DE10227709A1 (de) * 2001-06-25 2003-02-27 Alstom Switzerland Ltd Dampfturbinenanlage sowie Verfahren zu deren Betrieb

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811837A (en) * 1956-08-24 1957-11-05 Gen Electric Governing system for reheat turbine
US3216199A (en) * 1962-05-15 1965-11-09 United Aircraft Corp Power conversion system
US3875384A (en) * 1973-11-06 1975-04-01 Westinghouse Electric Corp Protection system for transferring turbine and steam generator operation to a backup mode especially adapted for multiple computer electric power plant control systems
US3943718A (en) * 1974-01-07 1976-03-16 Berry Clyde F Steam generation system
US4368520A (en) * 1980-09-29 1983-01-11 Westinghouse Electric Corp. Steam turbine generator control system
US4474012A (en) * 1983-07-13 1984-10-02 General Electric Company Steam turbine pressure rate limiter
CZ382892A3 (en) * 1992-02-20 1993-09-15 Asea Brown Boveri Device with a gas turbine and method for starting thereof
US6951105B1 (en) * 2004-04-20 2005-10-04 Smith Edward J Electro-water reactor steam powered electric generator system
WO2006103270A1 (fr) * 2005-03-30 2006-10-05 Alstom Technology Ltd Procede de demarrage d'un systeme de turbines comportant un groupe secondaire embrayable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432960C1 (de) * 1994-09-16 1995-11-30 Steinmueller Gmbh L & C Verfahren zum Betrieb eines Dampfkraftwerkes und Dampfkraftwerk
DE10227709A1 (de) * 2001-06-25 2003-02-27 Alstom Switzerland Ltd Dampfturbinenanlage sowie Verfahren zu deren Betrieb

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2529087A4 (fr) * 2010-01-27 2017-03-08 Nanjing TICA Air-conditioning Co., Ltd. Système de production d'énergie à suivi de charge à cycle de rankine à caloporteur organique (orc), et procédé d'exploitation
EP3074613A4 (fr) * 2013-11-26 2017-07-05 Volvo Truck Corporation Chauffage supplémentaire pour récupération de chaleur perdue
EP2918796A1 (fr) * 2014-03-13 2015-09-16 Siemens Aktiengesellschaft Centrale à vapeur dotée d'un générateur de vapeur comprenant une armature de maintien de pression à tambour
WO2015135772A1 (fr) * 2014-03-13 2015-09-17 Siemens Aktiengesellschaft Centrale électrique à vapeur équipée d'un générateur de vapeur comportant une vanne de maintien de pression de tambour
DE102019216616A1 (de) * 2019-10-29 2021-04-29 Siemens Aktiengesellschaft Anlage mit elektrischem Speicher zum schnelleren Anfahren einer Dampfturbine und Verfahren

Also Published As

Publication number Publication date
JP5027887B2 (ja) 2012-09-19
CN101573511A (zh) 2009-11-04
CN101573511B (zh) 2012-08-22
US20100313564A1 (en) 2010-12-16
WO2008080854A2 (fr) 2008-07-10
EP2100010B1 (fr) 2015-07-15
EP2100010A2 (fr) 2009-09-16
US8387388B2 (en) 2013-03-05
JP2010514985A (ja) 2010-05-06
EP1953350A3 (fr) 2009-01-07
WO2008080854A3 (fr) 2009-01-29

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