EP3447257A1 - Procédé d'accélération d'une turbine à vapeur - Google Patents

Procédé d'accélération d'une turbine à vapeur Download PDF

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Publication number
EP3447257A1
EP3447257A1 EP17187068.6A EP17187068A EP3447257A1 EP 3447257 A1 EP3447257 A1 EP 3447257A1 EP 17187068 A EP17187068 A EP 17187068A EP 3447257 A1 EP3447257 A1 EP 3447257A1
Authority
EP
European Patent Office
Prior art keywords
steam
steam turbine
turbine
generator
pressure
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Withdrawn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
EP17187068.6A
Other languages
German (de)
English (en)
Inventor
Matthias Heue
Fatih Temiz
David Veltmann
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 EP17187068.6A priority Critical patent/EP3447257A1/fr
Publication of EP3447257A1 publication Critical patent/EP3447257A1/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Withdrawn legal-status Critical Current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
    • 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
    • F01K23/101—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
    • 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 accelerating a steam turbine, wherein the steam turbine is torque-coupled with a generator, wherein the generator is operated as a motor and a voltage generating system supplies the generator with electrical energy.
  • Steam turbines are used in modern steam power plants.
  • gas turbines are used in addition to the steam turbines.
  • the thermal energy of the hot exhaust gas of the gas turbine is used to generate steam for the operation of the steam turbine.
  • the thermal energy from an energy source is used to generate steam needed to operate the steam turbine.
  • the steam turbines used in the steam power plants or gas and steam turbine power plants have comparatively high masses. Therefore, the heating of the preferably made of steel comparatively large components of the steam turbine is an essential factor. The heating must not be too fast, as this can lead to negative consequences of the material properties.
  • the startup of a steam turbine is an essential factor in the operation of a steam power plant or a combined cycle power plant. Starting a steam turbine is a challenge and is currently accomplished by using steam from the steam generator to rotate the rotor of a steam turbine. However, only a small part of the generated steam is used here.
  • the remaining steam which does not flow into the steam turbine operated during start-up, is fed directly into the condenser via a bypass station.
  • a minimum amount of steam is required for starting the steam turbine.
  • the invention seeks to remedy the situation and offer a method by which the startup or acceleration of the steam turbine is improved.
  • the steam turbine is accelerated until a steam of sufficient quality is available and supplies the steam turbine with steam.
  • the steam turbine does not have to stop during this time, but can be accelerated according to the invention via the generator operated as a motor. Once the steam has sufficient quality, the steam is fed to the steam turbine, in which case there is the advantage that the steam turbine already has certain speeds, preferably the rated speed of 50hz or 60hz.
  • the high-pressure turbine part is then supplied with steam when the steam is available in sufficient quantity.
  • a battery or rechargeable battery system is used as the voltage generating system.
  • an electrical supply network is used as the voltage generation system.
  • a frequency converter is used, which is arranged between the voltage generating system and the generator.
  • the steam turbine is used in a gas and steam turbine power plant and accelerated simultaneously with the gas turbine.
  • the steam turbine is used in a combined cycle power plant and accelerated in front of the gas turbine.
  • the figure shows a part of a plant 1.
  • This plant 1 may be part of a steam power plant or a gas and steam turbine plant.
  • the plant 1 comprises a steam turbine 2.
  • the representation of the steam turbine 2 is to be regarded as schematic in the figure.
  • the steam turbine 2 in formed several sub-turbines, such as a high-pressure turbine section, medium-pressure turbine section and low-pressure turbine section.
  • the medium-pressure turbine part is characterized by the fact that it is supplied with a steam, which flows out of the high-pressure turbine section and was brought to a higher temperature in a reheater.
  • the steam turbine 2 essentially comprises a rotor formed with blades, which rotates in nominal operation with, for example, 50hz or 60hz.
  • the thermal energy of the steam is converted into rotational energy of the rotor.
  • the rotational energy of the rotor is used to drive a generator rotor (not shown) of a generator 3.
  • the generator 3 is an electrodynamic machine, which can be operated as a generator, that is to say for the generation of electrical energy or as a motor, that is to say for the generation of mechanical energy.
  • the generator 3 is coupled torque-technically via a common shaft 4 with the steam turbine 2.
  • a voltage generating system 5 is used to supply the generator 3 with electrical energy, wherein the generator 3 is operated as a motor and drives or accelerates the rotor of the steam turbine 2.
  • the driving of the rotor of the steam turbine 2 via the generator 3 operated as a motor takes place here at such an early stage that the steam turbine 2 takes place without steam supply from the steam generator (not shown).
  • the rotor of the steam turbine 2 is thereby accelerated from standstill until a steam of sufficient quality from the steam generator is available and then supplies the steam turbine 2 with steam.
  • a switch 6 is opened, whereby the electrical supply of the generator 3 is interrupted.
  • the generator 3 is then no longer operated as a motor, but as a generator 3 for generating electrical energy.
  • a battery or a battery system is used.
  • a power supply system 5 may be used as the power generation system 5.
  • a frequency converter 7 is disposed between the voltage generating system 5 and the switch 6. With the frequency converter 7, a suitable frequency of the voltage is generated, which is required for the operation of the generator 3 operated as a motor.
  • the steam in the steam generator is not of sufficient quality, that is, the steam does not have the appropriate pH or humidity, for example, the steam is first passed through the medium pressure and / or low pressure turbine section. Only when the steam has the sufficient quality, this is also passed through the high-pressure low-pressure turbine section.
  • the plant is also operated by the fact that as long as the steam is not generated in the steam generator in sufficient quantity, the high-pressure turbine section is not supplied with steam, but first the medium-pressure or low-pressure turbine section. Only when the steam is available in sufficient quantity, the high-pressure turbine section is supplied with steam.
  • the steam turbine 2 is used in a gas and steam turbine power plant, the steam turbine 2 is accelerated simultaneously with the gas turbine. In an alternative embodiment, the steam turbine 2 is accelerated even before the gas turbine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Eletrric Generators (AREA)
EP17187068.6A 2017-08-21 2017-08-21 Procédé d'accélération d'une turbine à vapeur Withdrawn EP3447257A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17187068.6A EP3447257A1 (fr) 2017-08-21 2017-08-21 Procédé d'accélération d'une turbine à vapeur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17187068.6A EP3447257A1 (fr) 2017-08-21 2017-08-21 Procédé d'accélération d'une turbine à vapeur

Publications (1)

Publication Number Publication Date
EP3447257A1 true EP3447257A1 (fr) 2019-02-27

Family

ID=59677136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17187068.6A Withdrawn EP3447257A1 (fr) 2017-08-21 2017-08-21 Procédé d'accélération d'une turbine à vapeur

Country Status (1)

Country Link
EP (1) EP3447257A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019210298A1 (de) * 2019-07-11 2021-01-14 Michael Pippert Dampfkraftwerk sowie Verfahren
DE102019210299A1 (de) * 2019-07-11 2021-01-14 Michael Pippert Dampfkraftwerk sowie Verfahren
DE102019216616A1 (de) * 2019-10-29 2021-04-29 Siemens Aktiengesellschaft Anlage mit elektrischem Speicher zum schnelleren Anfahren einer Dampfturbine und Verfahren

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2101043A1 (fr) * 2008-03-11 2009-09-16 Siemens Aktiengesellschaft Procédé de chauffage d'une turbine à vapeur
US20100229523A1 (en) * 2009-03-16 2010-09-16 General Electric Company Continuous combined cycle operation power plant and method
US20140013750A1 (en) * 2010-12-24 2014-01-16 Stefan Müller Waste-heat recovery system
US20170145850A1 (en) * 2015-11-19 2017-05-25 Borgwarner Inc. Waste heat recovery system for a power source

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2101043A1 (fr) * 2008-03-11 2009-09-16 Siemens Aktiengesellschaft Procédé de chauffage d'une turbine à vapeur
US20100229523A1 (en) * 2009-03-16 2010-09-16 General Electric Company Continuous combined cycle operation power plant and method
US20140013750A1 (en) * 2010-12-24 2014-01-16 Stefan Müller Waste-heat recovery system
US20170145850A1 (en) * 2015-11-19 2017-05-25 Borgwarner Inc. Waste heat recovery system for a power source

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019210298A1 (de) * 2019-07-11 2021-01-14 Michael Pippert Dampfkraftwerk sowie Verfahren
DE102019210299A1 (de) * 2019-07-11 2021-01-14 Michael Pippert Dampfkraftwerk sowie Verfahren
DE102019216616A1 (de) * 2019-10-29 2021-04-29 Siemens Aktiengesellschaft Anlage mit elektrischem Speicher zum schnelleren Anfahren einer Dampfturbine und Verfahren

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