EP2769094A2 - Procédé de démarrage d'une turbine à vapeur d'une centrale solaire - Google Patents

Procédé de démarrage d'une turbine à vapeur d'une centrale solaire

Info

Publication number
EP2769094A2
EP2769094A2 EP12810187.0A EP12810187A EP2769094A2 EP 2769094 A2 EP2769094 A2 EP 2769094A2 EP 12810187 A EP12810187 A EP 12810187A EP 2769094 A2 EP2769094 A2 EP 2769094A2
Authority
EP
European Patent Office
Prior art keywords
heat
steam turbine
steam
turbine
power plant
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.)
Ceased
Application number
EP12810187.0A
Other languages
German (de)
English (en)
Inventor
Frank EIDNER
Ingo GLEISNER
Max HEINRICH
Marco HERKERT
Gustl SCHREIBER
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 Energy Global GmbH and Co KG
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
Publication of EP2769094A2 publication Critical patent/EP2769094A2/fr
Ceased legal-status Critical Current

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
    • F03G6/065—Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
    • F03G6/067—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/071—Devices for producing mechanical power from solar energy with energy storage devices
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Definitions

  • the present invention relates to a method for starting a steam turbine of a solar power plant, in particular ⁇ re a parabolic trough power plant.
  • Starting methods for steam turbines of solar power plants are known in principle.
  • solar power plants in particular ⁇ in the form of parabolic trough power plants, solar generator units.
  • these solar generator units are parabolic mirrors which have a pipeline for a thermal oil in their fuel line area. In this focal line, the heat ⁇ carrier oil is heated in sunlight and then brought via a heat exchanger with water or steam in combination.
  • Superheated steam is generated by heat transfer, which drives a steam turbine of the solar power plant in ⁇ in egg nem steam cycle.
  • Insbesonde ⁇ it is an object of the present invention to provide a method for starting a steam turbine of a solar power station is available, in which in a cost effective and simple manner, the preheating of the steam turbine may be performed.
  • An inventive method for starting a steam turbine of a solar power plant, in particular a parabolic trough power plant comprises the following steps:
  • Heating at least one component of the steam turbine which comes into contact with superheated steam during operation of the steam turbine, with the heat provided, starting the steam turbine after heating.
  • heat is actively provided in a method according to the invention during and / or before starting the steam turbine.
  • preheating of the relevant components namely those components which come into contact with superheated steam during operation of the steam turbine, is carried out.
  • the subsequent start-up process ie in particular the individual steps of such a start-up process, or the application of live steam, can be carried out much faster or earlier.
  • the provision of heat and the preheating by a process according to the invention can be carried out in particular before the sun- be performed, so that essentially directly from the beginning of a usable solar radiation intensity and a power-generating operation of the steam turbine can be performed.
  • the components which are to be preheated in particular valves, for example, quick-closing valves or fresh steam valves, the housing, the shaft or the turbine blade of the steam turbine.
  • a method according to the invention can be further developed in that the step of heating at least one of
  • Component of the steam turbine takes place with rotating turbine blades of the steam turbine.
  • the rotational speed of the turbine blades is less than 5%, in particular less than 1%, of the maximum rotational speed of the turbine blades during operation of the steam turbine.
  • Rotating the turbine blades in this preheating stage produces little or no vapor flow. Rather insbesonde ⁇ re, are actively moving the turbine blades, so that a more advantageous heat equalization can take place within the turbine blades during preheating.
  • rotating the turbine blades serves to preheat all areas of the turbine blade substantially uniformly from a heat medium by the heat provided. It is also advantageous when the turbine blades at an active inventive method ⁇ SEN during preheating, in particular motor-driven is.
  • an electric motor can be provided.
  • a connected generator of the steam turbine can also be used as an electric motor by appropriate control.
  • This can be provided by a solar generator unit of the solar power plant.
  • the heat provided can be provided directly from the solar power plant, namely a solar generator unit. External connections relationship ⁇ separate heat generator can be avoided in this way.
  • a method according to the invention can preferably be used in already existing solar power plants.
  • the hot steam for example, in the use of edge times in the course of a day, ie in particular shortly after sunrise or shortly before sunset take place.
  • the solar radiation intensity ⁇ still not sufficient to provide a steam quality with the ⁇ not agile operating parameters for the steam turbine for power generation available.
  • the heat generated may be used to preheat the component (s).
  • the superheated steam can be provided directly or indirectly for such heating.
  • An indirect transfer is conceivable, for example via a heat transfer oil. It is also advantageous if in an inventive
  • the heat from at least one heat storage of the solar power plant is provided.
  • Such Wär ⁇ meatorium can in particular serve for buffering, so that it can be started regardless of when the storage of heat at any desired timing of the start-up process by preheating the steam turbine.
  • This memory can be charged both internally and externally.
  • An internal charging is preferably carried out with heat, which is available within the system of the solar power plant, for example by the generated steam or the heat generated by solar generator units.
  • Using a memory allows you to pre-heat before sunrise. So that the service life of a steam turbine can even closer to the sunrise out be postponed ben so that up to 1.5 hours of extra usage ⁇ life every day are possible.
  • the at least one heat accumulator is charged by a solar generation unit of the solar power plant with a method according to the invention ⁇ SEN.
  • a direct or indirect charge is possible.
  • the charge can be understood with heated thermal oil.
  • An indirect charge is, for example, the production of superheated steam, which is then stored in a heat accumulator.
  • the heat accumulator is in each case in fluid-communicating connection with the corresponding circuit, that is to say the heat-transfer oil circuit or the superheated steam circuit.
  • the at least one heat storage for storing a heat transfer medium, in particular a heat transfer oil ⁇ formed in a process according to the invention ⁇ SEN may be advantageous if the at least one heat storage for storing a heat transfer medium, in particular a heat transfer oil ⁇ formed in a process according to the invention ⁇ SEN. This can be achieved in particular a particularly compact design, since a direct connection of this heat storage can be made to the heat transfer oil circulation.
  • the formed at least a heat storage for storing superheated steam at a SEN according to the invention may in particular ⁇ sondere with such a circuit to interface form a part of the cycle of live steam relationship ⁇ as superheated steam respectively.
  • a memory is for example a steam storage.
  • FIG. 2 shows a further embodiment of a solar power plant for carrying out a method according to the invention
  • Figure 3 shows a possibility of the use situation of the solar radiation intensity in a method according to the invention
  • Figure 4 is a representation of a steam turbine for a method according to the invention.
  • FIGS. 1 and 2 show two variants of solar power plants 100. In both cases, it is a parabolic trough power plant with a large number of individual parabolic troughs, each of which forms a solar generator unit 20.
  • the preheating of components of the steam turbine 10 relates in particular to the turbine blades ⁇ 12, the housing 16 and / or valves 14, as shown for example in Fig. 4.
  • the turbine blades 12 can rotate during the preheating, in particular via a generator 18, which is controlled as Elektromo ⁇ gate, are moved.
  • FIG. 2 according to an illustration, two different alternatives or combinations of operable embodiments of a solar power plant 100 for a method according to the invention are shown. They are characterized in that two heat storage 30 are provided.
  • the upper left heat storage 30 is connected in fluid communication with the circulation of the heat transfer oil.
  • the heat storage 30 at the bottom right is connected to the superheated steam cycle to the steam turbine 10.
  • Both heat accumulators 30 serve to be able to store heat in order to provide heat for the preheating of individual components of the steam turbine 10 for a method according to the invention.
  • a corresponding heat storage medium, ie heat transfer oil or superheated steam can be stored.
  • integration into the system of the solar power plant 100 is done so that an internal charging by heat which is provided by the solar Ergneereinhei ⁇ th 20 available, can be carried out.

Landscapes

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

Abstract

La présente invention concerne un procédé de démarrage d'une turbine à vapeur (10) d'une centrale solaire (100), notamment d'une centrale à collecteurs cylindrico-paraboliques, présentant les épates suivantes : fourniture de chaleur ; chauffage par la chaleur fournie d'au moins un élément de la turbine à vapeur (10) qui vient en contact avec la vapeur chaude lorsque la turbine à vapeur (10) est en mode de fonctionnement ; après ledit chauffage, démarrage de la turbine à vapeur (10).
EP12810187.0A 2012-01-19 2012-12-14 Procédé de démarrage d'une turbine à vapeur d'une centrale solaire Ceased EP2769094A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012200769A DE102012200769A1 (de) 2012-01-19 2012-01-19 Verfahren für das Anfahren einer Dampfturbine eines Solarkraftwerkes
PCT/EP2012/075558 WO2013107575A2 (fr) 2012-01-19 2012-12-14 Procédé de démarrage d'une turbine à vapeur d'une centrale solaire

Publications (1)

Publication Number Publication Date
EP2769094A2 true EP2769094A2 (fr) 2014-08-27

Family

ID=47504896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12810187.0A Ceased EP2769094A2 (fr) 2012-01-19 2012-12-14 Procédé de démarrage d'une turbine à vapeur d'une centrale solaire

Country Status (3)

Country Link
EP (1) EP2769094A2 (fr)
DE (1) DE102012200769A1 (fr)
WO (1) WO2013107575A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3029280B1 (fr) 2014-12-04 2023-02-08 General Electric Technology GmbH Procédé de démarrage d'une turbine à vapeur
US10577962B2 (en) 2016-09-07 2020-03-03 General Electric Company Turbomachine temperature control system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095428A (en) * 1975-02-25 1978-06-20 Westinghouse Electric Corp. Solar electric power plant and an improved thermal collector of solar energy
JPS60228777A (ja) * 1984-04-25 1985-11-14 Toshiba Corp 太陽熱利用プラント
EP1820964A1 (fr) * 2006-02-17 2007-08-22 Siemens Aktiengesellschaft Méthode et dispositif pour augmenter la production énergétique dans une centrale thermique solaire
DE102008036527B4 (de) * 2008-08-06 2010-09-30 Flagsol Gmbh Thermischer Energiespeicher
CN103003550B (zh) * 2010-05-03 2016-02-17 亮源工业（以色列）有限公司 一种用于操作太阳热能发电系统的系统、方法和装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013107575A2 *

Also Published As

Publication number Publication date
WO2013107575A2 (fr) 2013-07-25
DE102012200769A1 (de) 2013-07-25
WO2013107575A3 (fr) 2014-04-10

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