EP2976510A2 - Procédé pour faire fonctionner une centrale à cycle combiné - Google Patents

Procédé pour faire fonctionner une centrale à cycle combiné

Info

Publication number
EP2976510A2
EP2976510A2 EP14729609.9A EP14729609A EP2976510A2 EP 2976510 A2 EP2976510 A2 EP 2976510A2 EP 14729609 A EP14729609 A EP 14729609A EP 2976510 A2 EP2976510 A2 EP 2976510A2
Authority
EP
European Patent Office
Prior art keywords
pressure
waste heat
heat boiler
turbine
gas turbine
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Withdrawn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
EP14729609.9A
Other languages
German (de)
English (en)
Inventor
Matthias Migl
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 EP14729609.9A priority Critical patent/EP2976510A2/fr
Publication of EP2976510A2 publication Critical patent/EP2976510A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F01K23/103—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with afterburner in exhaust boiler
    • F01K23/105—Regulating means specially adapted therefor
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F01K23/106—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with water evaporated or preheated at different pressures in exhaust boiler
    • F01K23/108—Regulating means specially adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/26—Starting; Ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F22B35/02—Control systems for steam boilers for steam boilers with natural convection circulation
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

Definitions

  • the invention relates to a system comprising a waste heat ⁇ boiler and a method for operating a gas and steam power plant.
  • gas and steam turbine (CCGT) plants are used to generate electrical energy.
  • CCGT gas and steam turbine
  • Gastur ⁇ bine and a steam turbine is a rotating machine is set ⁇ that drive one (for single-shaft) or more (in multi-shaft systems) generators.
  • gas and steam plants are characterized by the fact that the generation of steam for the steam turbine, the thermal energy is used at the output of the gas turbine.
  • CCPPs with a gas turbine in particular several gas ⁇ turbines and a steam turbine are usually operated in a load range between 25% and 100% of the rated power.
  • the damping effect of rotating masses on crizaufgäbe or for frequency control can be met basically only by turbines such as a gas turbine or a steam turbine.
  • Steam turbines are particularly suitable for this purpose. This is because the rotors of steam turbines have a high mass moment of inertia and on the other hand because the power of steam turbines in a certain range of values is almost independent of the speed. In contrast, the performance of a gas turbine at higher speeds is also higher.
  • the steam turbine in a gas and steam plant is kept in operation at a minimum load on the grid during operation. This would be the case, for example, if the demand for electricity is low or if large quantities from renewable sources are available. However, in Germany, for example, most gas and steam systems are currently being driven off at night and switched on again the next morning via a hot start.
  • the gas turbine is heruntergefah- to a minimum power ren, while the waste heat boiler and the steam turbine cold ge ⁇ driving, resulting in an increased service life consumption of the thick-walled components of the waste heat boiler and the steam turbine.
  • the minimum power at which such a gas and steam power plant can be operated is limited by the permissible CO emission limit.
  • the object of the invention is to provide a system with which a better driving is possible.
  • the object is achieved by a system according to claim 1.
  • the object is achieved by a method ge ⁇ claim 4.
  • the invention proposes that the Dampftur ⁇ bine and at least one heat recovery steam generator are kept hot with minimal load.
  • the gas turbine is not in the load range, but provides the required air mass flow through the compressor part.
  • the required air mass flow is available. The drive of the gas turbine takes place at a reduced speed, wherein the starting inverter drives the rotor of the gas turbine.
  • the plant comprises a steam turbine, which can be sampled with steam from the waste heat boiler, wherein the waste heat boiler has a high-pressure drum and behind the high-pressure drum, a high-pressure pressure control valve is arranged.
  • a high-pressure pressure control valve is arranged.
  • an advantageous training of the system is a medium-pressure drum, which is arranged in the ⁇ heat boiler and behind the medium-pressure drum, a medium-pressure pressure-holding valve is arranged.
  • the required secondary air for the burner is fed into the waste heat ⁇ boiler.
  • the gas turbine should be kept at a rotational speed ⁇ number that corresponds approximately to the air mass flow that is needed for the operation of the burner.
  • the fuel is supplied into the waste heat boiler arranged in the set to ⁇ burners.
  • the gas temperature is controlled so that almost nominal temperatures are reached on the steam side.
  • the turbine valves immediately in front of the steam turbine should be fully open.
  • the additional valves located behind the steam drums are designed to maintain the pressure in the evaporators at a fixed pressure which may, for example, be 60% of the nominal pressure, which may also be between 40% to 100% of the fixed pressure.
  • the steam turbine can thus be kept at a mi ⁇ nimalen load, for example, less than 10MW to the grid.
  • a mi ⁇ nimalen load for example, less than 10MW to the grid.
  • the thick-walled components of the steam turbine and the waste heat boiler remain almost at nominal temperature. Thus, load can be picked up very quickly.
  • the gas turbine at speeds of 30Hz un ⁇ ter is operated.
  • the figure shows schematically a gas and steam plant according to the invention.
  • the steam turbine 2 in this case comprises ei ⁇ ne high-pressure turbine part 4, a medium-pressure turbine part 5 and a twin-flow low-pressure turbine part. 6
  • the gas turbine 3 includes a compressor part 7, a burner ⁇ part 8 and a turbine part 9.
  • the hot exhaust gas 10 of the Gastur ⁇ bine 3 passes into a waste heat boiler 11.
  • This Abhitzekes- was 11 comprises a high pressure drum 12, an intermediate pressure ⁇ drum 13 and a Low-pressure drum 14.
  • In the waste heat boiler 11 at least one auxiliary burner 15 is arranged.
  • the waste heat boiler 11 shown in the figure comprises, in addition to the additional burner ⁇ 15 another auxiliary burner 16.
  • the auxiliary burner 15 and the auxiliary burner 16 are designed to generate thermal energy and cause steam for the
  • a main steam line 17 is arranged, in which valves 18 and 19 are arranged and the high-pressure turbine part 4 is supplied with live steam.
  • the steam flows out of the high-pressure turbine section 4 via an exhaust steam line 20 to a reheater 21.
  • the exhaust steam line 20 is supplied with steam by a medium-pressure drum 13.
  • steam enters the medium-pressure turbine section via a medium-pressure line 22 and via further valves 23 and 24.
  • the steam passes via an overflow line 25 to the low-pressure turbine section 6.
  • the low-pressure turbine part 6 is supplied with the low ⁇ pressure drum 14 in the waste heat boiler 11 with steam.
  • 26 further valves 27 and 28 are arranged at the output of the low-pressure drum 14 in the low-pressure drum line.
  • the gas turbine 3 is designed such that the required for the burner 15, 16 air mass flow of the gas turbine 3 is switchable. This takes place in that the gas turbine 3 is operated without fuel supply and the drive via a starting inverter takes place (not shown). Therefore, the burners 15, 16 are supplied with secondary air from the gas ⁇ turbine 3. Behind the high-pressure drum 12, a high-pressure pressure-maintaining valve 29 is arranged. The high-pressure pressure-maintaining valve 29 is in this case operated such that the
  • the waste heat boiler 11 comprises means ⁇ -pressure holding valve 30, wherein the medium-pressure turbine section 5 through the medium-pressure drum 13 in the waste heat boiler 11 is supplied with ⁇ telyakdampf and a medium-pressure pressure holding valve 30 is arranged behind the medium-pressure drum 13, wherein the intermediate- Pressure holding valve 30 is operated such that the pressure in the waste heat boiler 11 is maintained at a fixed pressure which is 40% to 100%, in particular 60% of the nominal pressure.
  • a high-pressure valve 18, 19 is arranged in front of the high-pressure turbine part 4, wherein this valve 18, 19 is fully opened. In front of the medium-pressure turbine part 5, the valves 24 and 23 are arranged and these are fully opened in this mode.
  • the control strategy of this combined-cycle plant is operated such that the gas turbine 3 is not synchronized with the mains ⁇ the needs, but are formed as an air supply for the burners. 15 and 16 Furthermore, the valves 30 and 29 provide ⁇ for that the high-pressure drum 12 and the medium-pressure drum 13 can be maintained at almost nominal pressure and thus to almost nominal temperature. Thus, the possibility can be created to be able to take minimal Park ⁇ load while maintaining network-stabilizing own ⁇ companies upright. This is done for example by providing reactive power or by damping by rotating masses. From this condition, the system 1 can be brought to rated power faster. Especially if the combined cycle plant 1 would have to be shut down for a long time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner une centrale à cycle combiné (1), des brûleurs (15, 16) supplémentaires étant disposés dans la chaudière de récupération (11) et ces brûleurs (15, 16) étant alimentés en air secondaire émis par la turbine à gaz (3).
EP14729609.9A 2013-05-27 2014-05-21 Procédé pour faire fonctionner une centrale à cycle combiné Withdrawn EP2976510A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14729609.9A EP2976510A2 (fr) 2013-05-27 2014-05-21 Procédé pour faire fonctionner une centrale à cycle combiné

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13169386.3A EP2808501A1 (fr) 2013-05-27 2013-05-27 Procédé destiné au fonctionnement d'une centrale électrique à cycle combiné
EP14729609.9A EP2976510A2 (fr) 2013-05-27 2014-05-21 Procédé pour faire fonctionner une centrale à cycle combiné
PCT/EP2014/060393 WO2014191268A2 (fr) 2013-05-27 2014-05-21 Procédé pour faire fonctionner une centrale à cycle combiné

Publications (1)

Publication Number Publication Date
EP2976510A2 true EP2976510A2 (fr) 2016-01-27

Family

ID=48534215

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13169386.3A Withdrawn EP2808501A1 (fr) 2013-05-27 2013-05-27 Procédé destiné au fonctionnement d'une centrale électrique à cycle combiné
EP14729609.9A Withdrawn EP2976510A2 (fr) 2013-05-27 2014-05-21 Procédé pour faire fonctionner une centrale à cycle combiné

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13169386.3A Withdrawn EP2808501A1 (fr) 2013-05-27 2013-05-27 Procédé destiné au fonctionnement d'une centrale électrique à cycle combiné

Country Status (4)

Country Link
US (1) US20160115869A1 (fr)
EP (2) EP2808501A1 (fr)
KR (1) KR101825283B1 (fr)
WO (1) WO2014191268A2 (fr)

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CN108019733A (zh) * 2016-11-23 2018-05-11 林振娴 一种确定三压余热锅炉蒸汽流量及排烟参数的计算方法
MX2019007623A (es) 2016-12-22 2019-09-05 Siemens Ag Planta generadora con sistema de aire de admision de turbina de gas.
JP6278543B1 (ja) * 2017-02-17 2018-02-14 三菱日立パワーシステムズインダストリー株式会社 流動層ボイラ発電システムの協調制御運転装置
ES2928152T3 (es) 2017-12-01 2022-11-15 Qilu Pharmaceutical Co Ltd Forma cristalina de un inhibidor de beta-lactamasa y método de preparación de la misma
US11125118B1 (en) * 2020-03-16 2021-09-21 General Electric Company System and method to improve boiler and steam turbine start-up times
US11326471B2 (en) 2020-03-16 2022-05-10 General Electric Company System and method to improve boiler and steam turbine start-up times
US11927344B2 (en) 2021-12-23 2024-03-12 General Electric Technology Gmbh System and method for warmkeeping sub-critical steam generator

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DE1401020B2 (de) * 1957-05-11 1972-02-24 Siemens AG, 1000 Berlin u. 8000 München Einrichtung zur regelung einer blockanlage
CH558470A (de) * 1974-01-10 1975-01-31 Sulzer Ag Kombinierte gasturbinen-dampfkraftanlage.
NL1009467C2 (nl) * 1998-06-22 1999-12-27 Stork Eng & Contractors Bv Warmte-krachtinstallatie, en werkwijze voor het bedrijven daarvan.
US6502401B1 (en) * 2001-03-21 2003-01-07 General Electric Company High pressure bypass sliding setpoint for steam-cooled turbine
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PL2630342T3 (pl) * 2010-10-19 2015-03-31 General Electric Technology Gmbh Sposób działania pracującego w cyklu połączonym zakładu energetycznego z produkcją skojarzoną, oraz pracujący w cyklu połączonym zakład energetyczny do wykonywania tego sposobu
CN103154445B (zh) * 2010-10-19 2015-06-17 阿尔斯通技术有限公司 带有热电联产的联合循环动力设备及其运行方法
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Also Published As

Publication number Publication date
KR101825283B1 (ko) 2018-02-02
WO2014191268A2 (fr) 2014-12-04
WO2014191268A3 (fr) 2015-05-07
US20160115869A1 (en) 2016-04-28
EP2808501A1 (fr) 2014-12-03
KR20160003850A (ko) 2016-01-11

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