EP2805031A1 - Centrale électrique et procédé permettant de faire fonctionner une centrale électrique - Google Patents

Centrale électrique et procédé permettant de faire fonctionner une centrale électrique

Info

Publication number
EP2805031A1
EP2805031A1 EP13714254.3A EP13714254A EP2805031A1 EP 2805031 A1 EP2805031 A1 EP 2805031A1 EP 13714254 A EP13714254 A EP 13714254A EP 2805031 A1 EP2805031 A1 EP 2805031A1
Authority
EP
European Patent Office
Prior art keywords
power plant
pressure turbine
load
temperature
throttling
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.)
Granted
Application number
EP13714254.3A
Other languages
German (de)
English (en)
Other versions
EP2805031B1 (fr
Inventor
Günter Bauer
Norbert Pieper
Hans-Ulrich Thierbach
Michael Wechsung
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 PL13714254T priority Critical patent/PL2805031T3/pl
Priority to EP13714254.3A priority patent/EP2805031B1/fr
Publication of EP2805031A1 publication Critical patent/EP2805031A1/fr
Application granted granted Critical
Publication of EP2805031B1 publication Critical patent/EP2805031B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • F01K3/26—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam
    • F01K3/262—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by steam by means of heat exchangers
    • 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
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
    • F01K7/025—Consecutive expansion in a turbine or a positive displacement engine
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/22—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/22—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
    • F01K7/24—Control or safety means specially adapted therefor

Definitions

  • the invention relates to a method for operating a power plant comprising a steam turbine, which is subdivided into a high-pressure turbine section, medium-pressure turbine section and low ⁇ pressure turbine section and between the high-pressure turbine section and the intermediate-pressure turbine section an intermediate ⁇ superheater unit is arranged.
  • the invention relates to a power plant which is operated by the method according to the invention.
  • Power plants in which large-volume steam turbines are used, u.a. used in the municipal energy supply.
  • the steam turbines used in such power plants have relatively high masses and are usually designed for a given nominal power.
  • Power plants which can also be referred to as conventional power plants, can be classified as a first approximation in pure steam power plants and in gas and steam power plants.
  • ⁇ that have in common that fossil fuels are needed to generate electrical energy.
  • Such power plants have so far been designed such that they were placed for a base load of ⁇ .
  • the reheater heating surfaces were oversized and the hot reheater superheat temperature in the upper load range, for example, between 70% and 100% / g ⁇ regulated at the expense of the resulting thermodynamic loss of efficiency.
  • a hot reheat refers to the hot reheat temperature that is present after the intermediate superheater unit.
  • Another approach is to limit the lower load range, the load gradient accordingly or redu the allowable load cycles ⁇ decorate, whereby an increased wear ge into consideration ⁇ is attracted so that the thick-walled components have to be replaced at an early stage from ⁇ . at this point the invention comes in. It is an object of the invention to operate the plant such that the
  • a method for Be ⁇ drive a power plant comprising a steam turbine, which is divided into a high-pressure turbine section, medium-pressure turbine section and low-pressure turbine section and between the high-pressure turbine section and the intermediate-pressure turbine section, a reheater unit is arranged with the steps: - Operation of the power plant in part load,
  • a power plant which is operated by a method according to one of claims 1 to 4 and further by a power plant, which is designed as a steam power plant or as a gas and steam power plant and operated by the method according to the invention.
  • the invention is based on the idea that a frequent load change can still take place, but does not lead to a reduction in the service life of the components.
  • the invention is based on the idea that the number of permissible load changes is generally not proportional to the temperature jump at the same temperature gradient. For example, a temperature jump of 30 Kelvin leads to about 1,000,000 permissible load changes, whereas a temperature jump of 60 Kelvin does not lead to a halving of the permissible load changes, but to a much smaller number of load changes, namely about 10,000 permissible load changes. Thus, when the temperature jump is doubled, the number of permissible load changes changes by one or more orders of magnitude.
  • the above values are for illustrative purposes only.
  • the number of permissible load changes as a function of the temperature jump strongly depend on the geometries of the components, on the material properties as well as on temperature levels and many other parameters.
  • An essential feature of the invention is that the temperature of the reheater unit can be reduced by the inlet temperature is lifted in the reheater unit ⁇ .
  • the inlet temperature upstream of the reheater unit is also known as cold reheat records.
  • This increase in temperature is realized in that control valves, the section before the second Expansionsab ⁇ , that are throttled before the medium-pressure turbine section.
  • the throttling reduces the expansion and thus the temperature reduction in the first expansion section, in this case in the high-pressure turbine section.
  • the result is that there is an increase in load-dependent temperature fluctuations at the outlet of the high-pressure turbine section.
  • the waste entering at partial load becomes hot
  • the throttling is chosen such that the amount of temperature reduction after the reheater unit in the unthrottled state is substantially halved.
  • the throttling is controlled such that at load ⁇ change on all components, the then smaller temperature changes are equal in first approximation.
  • An essential Advantage of the invention is that now large load changes can be driven with significantly faster gradients and much more often in the life of the steam turbine. Overall, this leads to an increase in the service life.
  • Conventional conventional power plants include a steam ⁇ turbine, a can be divided between ⁇ superheating unit in a high-pressure turbine, intermediate pressure turbine and low-pressure turbine, and wherein the insects enjoyed ⁇ zerauer between the high-pressure part turbine and the medium-pressure turbine section arranged becomes.
  • a steam generator In front of the high-pressure Operatur ⁇ bine a steam generator generates a hot steam fresh, which flows through the high-pressure turbine section and is then reheated in the reheater unit and then flows into ⁇ closing in the medium-pressure turbine section and then by the low-pressure turbine section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

L'invention concerne une centrale électrique et un procédé permettant de faire fonctionner une centrale électrique. Selon ledit procédé, en mode charge partielle, la température à la sortie de la turbine haute pression est produite par un étranglement au moyen de la vanne moyenne pression.
EP13714254.3A 2012-04-04 2013-03-27 Centrale électrique et procédé permettant de faire fonctionner une centrale électrique Not-in-force EP2805031B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL13714254T PL2805031T3 (pl) 2012-04-04 2013-03-27 Siłownia i sposób eksploatacji siłowni
EP13714254.3A EP2805031B1 (fr) 2012-04-04 2013-03-27 Centrale électrique et procédé permettant de faire fonctionner une centrale électrique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20120163194 EP2647802A1 (fr) 2012-04-04 2012-04-04 Centrale électrique et procédé destiné au fonctionnement d'une centrale électrique
EP13714254.3A EP2805031B1 (fr) 2012-04-04 2013-03-27 Centrale électrique et procédé permettant de faire fonctionner une centrale électrique
PCT/EP2013/056496 WO2013149900A1 (fr) 2012-04-04 2013-03-27 Centrale électrique et procédé permettant de faire fonctionner une centrale électrique

Publications (2)

Publication Number Publication Date
EP2805031A1 true EP2805031A1 (fr) 2014-11-26
EP2805031B1 EP2805031B1 (fr) 2015-12-23

Family

ID=48048014

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20120163194 Withdrawn EP2647802A1 (fr) 2012-04-04 2012-04-04 Centrale électrique et procédé destiné au fonctionnement d'une centrale électrique
EP13714254.3A Not-in-force EP2805031B1 (fr) 2012-04-04 2013-03-27 Centrale électrique et procédé permettant de faire fonctionner une centrale électrique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20120163194 Withdrawn EP2647802A1 (fr) 2012-04-04 2012-04-04 Centrale électrique et procédé destiné au fonctionnement d'une centrale électrique

Country Status (7)

Country Link
US (1) US9574462B2 (fr)
EP (2) EP2647802A1 (fr)
JP (1) JP5985737B2 (fr)
CN (1) CN104204425B (fr)
IN (1) IN2014DN07231A (fr)
PL (1) PL2805031T3 (fr)
WO (1) WO2013149900A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3026230A1 (fr) * 2014-11-26 2016-06-01 Siemens Aktiengesellschaft Procédé de fonctionnement d'une unité de turbine, centrale à vapeur ou centrale à cycle combiné ainsi qu'utilisation d'un dispositif d'étranglement
DE102015200250A1 (de) * 2015-01-12 2016-07-14 Siemens Aktiengesellschaft Verfahren zum Betreiben eines Osmosekraftwerks und Osmosekraftwerk

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894394A (en) * 1974-04-22 1975-07-15 Westinghouse Electric Corp HTGR power plant hot reheat steam pressure control system
JPS5225240A (en) 1975-08-19 1977-02-25 Matsushita Electric Industrial Co Ltd Secondary nickel zinc alkaline battery
CH617494A5 (fr) * 1975-08-22 1980-05-30 Bbc Brown Boveri & Cie
JPS53120606U (fr) 1977-03-04 1978-09-26
US4166221A (en) * 1978-02-09 1979-08-28 Westinghouse Electric Corp. Overspeed protection controller employing interceptor valve speed control
US4253308A (en) * 1979-06-08 1981-03-03 General Electric Company Turbine control system for sliding or constant pressure boilers
JPS6226303A (ja) 1985-07-25 1987-02-04 Ishikawajima Harima Heavy Ind Co Ltd 再熱式タ−ビンの排気温度制御方法
JPS62206203A (ja) * 1986-03-07 1987-09-10 Hitachi Ltd 蒸気タ−ビン運転制御方法
JPS63248903A (ja) 1987-04-03 1988-10-17 Hitachi Ltd 蒸気タ−ビンの保護方法
SE502492C2 (sv) * 1991-12-23 1995-10-30 Abb Carbon Ab Pannanläggning med gemensamt ångsystem
US5361585A (en) * 1993-06-25 1994-11-08 General Electric Company Steam turbine split forward flow
JP3794796B2 (ja) 1997-08-29 2006-07-12 三菱重工業株式会社 コンバインド発電プラント
EP1191192A1 (fr) * 2000-09-26 2002-03-27 Siemens Aktiengesellschaft Procédé et dispositif pour préchauffer et enlever l'eau de conduits de vapeur pour étages de turbines
EP1775431A1 (fr) * 2005-10-12 2007-04-18 Siemens Aktiengesellschaft Procédé pour chauffer und turbine à vapeur
EP1998014A3 (fr) 2007-02-26 2008-12-31 Siemens Aktiengesellschaft Procédé destiné au fonctionnement d'une turbine à vapeur multiple
US20090136337A1 (en) 2007-11-26 2009-05-28 General Electric Company Method and Apparatus for Improved Reduced Load Operation of Steam Turbines
US8276382B2 (en) * 2009-03-17 2012-10-02 General Electric Company Systems and methods for pre-warming a heat recovery steam generator and associated steam lines
DE102010041627A1 (de) * 2010-09-29 2012-03-29 Siemens Aktiengesellschaft Dampfturbine mit Zwischenüberhitzung

Also Published As

Publication number Publication date
US20150113989A1 (en) 2015-04-30
JP5985737B2 (ja) 2016-09-06
IN2014DN07231A (fr) 2015-04-24
CN104204425A (zh) 2014-12-10
JP2015515573A (ja) 2015-05-28
CN104204425B (zh) 2015-09-16
WO2013149900A1 (fr) 2013-10-10
PL2805031T3 (pl) 2016-06-30
EP2647802A1 (fr) 2013-10-09
US9574462B2 (en) 2017-02-21
EP2805031B1 (fr) 2015-12-23

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