EP3183432A1 - Turbinenregelungseinheit mit einem temperaturbeanspruchungsregler als führungsregler - Google Patents
Turbinenregelungseinheit mit einem temperaturbeanspruchungsregler als führungsreglerInfo
- Publication number
- EP3183432A1 EP3183432A1 EP15774624.9A EP15774624A EP3183432A1 EP 3183432 A1 EP3183432 A1 EP 3183432A1 EP 15774624 A EP15774624 A EP 15774624A EP 3183432 A1 EP3183432 A1 EP 3183432A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine
- temperature
- controller
- control unit
- stress
- 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- Withdrawn
Links
- 230000008646 thermal stress Effects 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000035882 stress Effects 0.000 claims description 36
- 230000002123 temporal effect Effects 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 244000025221 Humulus lupulus Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
- F01D19/02—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith dependent on temperature of component parts, e.g. of turbine-casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
-
- 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
- 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
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/05—Purpose of the control system to affect the output of the engine
- F05D2270/053—Explicitly mentioned power
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
- F05D2270/3032—Temperature excessive temperatures, e.g. caused by overheating
Definitions
- Turbine control unit with a temperature load ⁇ regulator as a master controller
- GB 2 074 757 A discloses a method and arrangement for controlling the thermal stress of components of a steam turbine at maximum load and unload speeds during startup, shutdown, and other periods of load change. From monitored and derived quantities, a load rate is calculated for each of several preselected turbine components and the lowest speed selected for control. At the same time the
- US 2006/233637 AI shows a turbine start regulator with an optimum start control unit for predicting a thermal mix load, which is determined in a turbine rotor during a prediction period on the basis of the current time in the future to ⁇ , wherein a turbine acceleration rate and a load rate of growth can be used as control variables.
- US 5,044,152 A shows a method for operating a combined power station with a gas turbine system and an evaporator, steam ge ⁇ neriert in which from the heat of the turbine exhaust gas and a steam turbine is fed, which is operated by the thus generated steam.
- An inlet to the gas turbine system is controlled based on the condition of the evaporator or steam turbine.
- a turbine control unit for Rege ⁇ development of a turbine in particular for controlling the start-ei ⁇ ner turbine proposed, which is designed as a cascade controller.
- a regulator is understood to mean a cascade controller, wherein at least two control loops each other ge ⁇ are switched on. In this case an outer loop, a so- ⁇ -called master controller is present. It has the task of defining or at least influencing setpoints for an internal control loop, ie a downstream control loop.
- the master controller thus has the task of predetermining or influencing the setpoint values for an internal control loop in such a way that an excessive temperature load is avoided. So far, when starting a turbine usually with a controller for the turbine power the Performance, more precisely regulated the performance increase. To avoid an excessive temperature stress, the temperature is measured and stopped at an excessive Temperbe pipeung startup. Thus, the performance increase is interrupted. Thus an excessive tempera ⁇ turbe pipeung of components is indeed avoided, but a loss of time is to be accepted until the turbine can reach the ge ⁇ wished performance.
- a temperature stress regulator for the temperature temperaturbeanprüuchter components as a master controller can be achieved that the allowable temperature stress is largely used, so about the start of the power increase of the turbine turbine is as high as possible, without the ⁇ casual temperature stress of components to cry ⁇ th. It can so the power can be increased faster and a desired turbine performance can be achieved faster.
- temperature stress regulator is still an internal controller available. The temperature load controller provides the internal controller with a suitable set point to ensure that the turbine is controlled so that it does not exceed a permissible temperature load.
- the invention is primarily based on steam turbines in which the temperature stress, in particular the temperature stress during start-up represents a significant problem. However, it should not be ruled out that the invention is also used in gas turbines, for example.
- the inner regulator is a turbine regulator, in particular a turbine power regulator.
- turbine regulators are known in the art and are very well suited for the regulation of turbines, especially when starting the turbine.
- the temperature load regulator will pass in this case the inner regulator a setpoint for the performance of the turbine. As will be discussed in more detail later, this may also be a target value for the increase in performance.
- the main application is certainly the startup of a turbine. However, it is also conceivable to avoid overheating, for example, in full-load operation by the temperature-load regulator designed as a guide regulator.
- a temperature-stress calculation unit is provided in order to predefine at least one desired value for the temperature-stress controller.
- the temperature load calculation unit calculates, mostly from data stored in databases, whether a temperature increase is permissible.
- the temperature load controller is designed to provide for such a regulation of the turbine such that a desired time-temperature rise, so a certain temperature increase per unit time ⁇ is not exceeded.
- Decisive, in particular when starting the turbine is usually not an absolute ⁇ lute temperature should not be exceeded. It should not be forgotten that there is of course a temperature that must not be exceeded. During start-up, however, it is crucial to avoid undue material stresses that the temperature does not rise too fast. Therefore, the temperature regulator must normally ensure that the temperature does not rise too fast.
- the temperature stress calculation unit can deduce a temperature rise from the detected temperature values and their time sequence. Furthermore, this temperature increase can be compared with stored data. This allows to determine if the temperature rise is increased can, must be lowered or remain the same. This information can be passed to the temperature stress controller. From this information, the temperature demand controller can generate a suitable setpoint for the inner controller.
- the temperature- stress regulator is designed to avoid a temperature stress that is caused by temperature differences. Occasionally, a temperature stress also results from different temperatures within a component or from different temperatures of different components. For example, it can be problematic when blades of the turbine expand by heating and a casing of the turbine expands more slowly due to slower heating. It therefore sometimes applies temperature differences that trigger a temperature stress to recognize and avoid by a regulation.
- the turbine power controller is configured to generate setpoints for positioners that control the position of control valves. The control valves significantly influence the respective amount of steam flowing through and thus the performance or performance curve of the turbine. In this embodiment, the turbine control unit is thus cascaded twice. First, the Temperaturbean ⁇ spruchungsregler is present as the parent master controller, the setpoints for the controller of the turbine power generated. The turbine power controller in turn generates setpoint values for the positioners
- the turbine control unit is designed turbine stages, in particular a Hochdrucktur ⁇ bine, to regulate a medium pressure turbine and a low pressure turbine separated.
- the performance can be increased differently, especially due to different Temperaturbeanspru ⁇ chungen.
- usually a completely separate regulation can not be realized.
- different steam paths are available, the boundary condition that steam flows from the high-pressure turbine into the medium-pressure turbine and from there into the low-pressure turbine may result in certain dependencies on the performance of the individual turbine sections. Nevertheless, it is advantageous to be able to regulate individual sub-turbines in principle separately. This allows about the Leis ⁇ tion of a sub-turbine to increase faster, while the performance of another sub-turbine is to increase slower to avoid undesirable temperature stress.
- temperature sensors are mounted at different locations of the turbine, in particular on a high-pressure turbine and / or on a medium-pressure turbine.
- a high-pressure turbine and the intermediate pressure turbine han ⁇ delt it is more temperature-stress components, so that temperature sensors are required, above all there. In many cases, it makes sense to install temperature sensors in the low-pressure turbine as well.
- the invention also relates to a method of controlling a turbine with a cascade controller comprising a mecanicsreg ⁇ ler and an internal regulator, the master controller detects a temperature stress of the turbine and passes such setpoints to the inner controller, that a uner ⁇ desired temperature stress of the turbine is avoided , Further explanations of the method will be omitted here. Reference is made to the explanations of the turbine control unit described above, which may be used to carry out the method.
- the master controller detects the temperature stress of the turbine by a temporal temperature increase, ie by a temperature increase per unit time, and determines the resulting temperature stress, wherein at too high a temperature stress to the inner controller the setpoint is passed to reduce the turbine power increase, the set point is passed at a temperature load within a desired range, the power increase can be maintained, and at a temperature load below a threshold the setpoint is passed to increase the power increase.
- too high a temperature load here does not mean that the temperature stress is already unacceptably high. Too high a temperature load only means that a limit value for the control has been exceeded.
- the regulation should just avoid an inadmissibly high temperature stress. This regulation allows the rapid start-up of a turbine without an inadmissibly high temperature stress.
- a turbine control unit 1 can be seen.
- a temperature control controller 2 serves as a master controller and transfers setpoint values to an internal controller 3, which is designed as a controller of the turbine output.
- the Temperaturbeanspru ⁇ monitoring controller 2 is connected upstream unit 4, a Temperaturbe distributedungsbeticians-. This evaluates signals originating from temperature sensors 5 for a high-pressure turbine 6 and from temperature sensors 7 for a medium-pressure turbine 8.
- the temperature stress calculation unit 4 transfers to the temperature stress controller 2 whether the temperature stress can be increased, should remain the same or should decrease. Depending on this, the temperature load controller 2 transmits to the controller 3 of the turbine power suitable setpoint values, depending on whether a power increase of the turbine is to be lowered, increased or kept constant. This he ⁇ follows for the high-pressure turbine 6, the medium-pressure turbine 8 and the low-pressure turbine 10 each separately.
- the positioner 11 regulates on the basis of the given target values, a position of a main steam control valve 12, influences which the steam supply to the high pressure turbine 6, a position of a capture ⁇ control valve 13, influences which the steam supply to the intermediate pressure turbine 8 and a position of a Zudampfklappe 14, which affects steam supply to the low-pressure turbine 10.
- a position of a main steam control valve 12 influences which the steam supply to the high pressure turbine 6, a position of a capture ⁇ control valve 13, influences which the steam supply to the intermediate pressure turbine 8 and a position of a Zudampfklappe 14, which affects steam supply to the low-pressure turbine 10.
- At the live steam control valve 12 is a Stellungsmes ⁇ ser 15, the Abfangstellventil 13, a positioner 16, and the Zudampfklappe 14 a positioner 17.
- the positioner 15, 16 and 17 pass values to the positioner 11.
- the positioner 11 has the information whether the position of live steam control valve 11, interception ⁇ valve 13 and Zudampfklappe 14 has taken the particular desired value or an opening or closing is required.
- wet steam coming from the low-pressure turbine 10 is condensed in a condenser 18.
- the resulting water is fed with a feedwater pump 19 in a steam generator 20.
- the steam passes through the steam control valve 12 to the high pressure turbine 6.
- From the high pressure turbine is heated in steam coming ei ⁇ nem reheater 26th From the reheater 26, the steam flows through the Abfangstellventil 13 in the Medium-pressure turbine 8. After expansion in the medium-pressure turbine 8, the steam flows in low-pressure turbine 10.
- steam coming from the steam generator 20 may be added.
- the high pressure turbine 6, the intermediate pressure turbine 8 and the Never ⁇ derdruckturbine 10 jointly drive a generator 21st Its power is determined with a power meter 22 and passed to the controller 3 of the turbine power. Further, a tachometer 23 is provided, which supplies the controller 3 of the turbine power with the rotational speed of turbine and generator 21.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Turbines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14190471.4A EP3015658A1 (de) | 2014-10-27 | 2014-10-27 | Turbinenregelungseinheit mit einem temperaturbeanspruchungsregler als führungsregler |
PCT/EP2015/072926 WO2016066376A1 (de) | 2014-10-27 | 2015-10-05 | Turbinenregelungseinheit mit einem temperaturbeanspruchungsregler als führungsregler |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3183432A1 true EP3183432A1 (de) | 2017-06-28 |
Family
ID=51794803
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14190471.4A Withdrawn EP3015658A1 (de) | 2014-10-27 | 2014-10-27 | Turbinenregelungseinheit mit einem temperaturbeanspruchungsregler als führungsregler |
EP15774624.9A Withdrawn EP3183432A1 (de) | 2014-10-27 | 2015-10-05 | Turbinenregelungseinheit mit einem temperaturbeanspruchungsregler als führungsregler |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14190471.4A Withdrawn EP3015658A1 (de) | 2014-10-27 | 2014-10-27 | Turbinenregelungseinheit mit einem temperaturbeanspruchungsregler als führungsregler |
Country Status (7)
Country | Link |
---|---|
US (1) | US10436058B2 (de) |
EP (2) | EP3015658A1 (de) |
JP (1) | JP6396599B2 (de) |
KR (1) | KR101914889B1 (de) |
CN (1) | CN107075974A (de) |
RU (1) | RU2669537C1 (de) |
WO (1) | WO2016066376A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6614503B2 (ja) * | 2016-10-21 | 2019-12-04 | 三菱重工業株式会社 | 蒸気タービン及び蒸気タービンの制御方法 |
EP3318732A1 (de) * | 2016-11-07 | 2018-05-09 | Siemens Aktiengesellschaft | Verfahren zum betreiben eines gud-kraftwerks |
EP3460202A1 (de) * | 2017-09-22 | 2019-03-27 | Siemens Aktiengesellschaft | Dampfturbinenregelung |
US11162428B2 (en) | 2017-12-18 | 2021-11-02 | General Electric Company | Method of starting a gas turbine engine |
US11525375B2 (en) | 2020-04-09 | 2022-12-13 | General Electric Company | Modeling and control of gas cycle power plant operation with variant control profile |
US11428115B2 (en) * | 2020-09-25 | 2022-08-30 | General Electric Company | Control of rotor stress within turbomachine during startup operation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3673017B2 (ja) * | 1996-05-23 | 2005-07-20 | 株式会社東芝 | 蒸気タービン起動制御装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4208060A (en) | 1979-01-15 | 1980-06-17 | Bellofram Corporation | Sealed shaft |
US4320625A (en) * | 1980-04-30 | 1982-03-23 | General Electric Company | Method and apparatus for thermal stress controlled loading of steam turbines |
US4280060A (en) * | 1980-06-09 | 1981-07-21 | General Electric Company | Dedicated microcomputer-based control system for steam turbine-generators |
JP2680033B2 (ja) * | 1988-05-11 | 1997-11-19 | 株式会社日立製作所 | コンバインドプラントの運転方法及び装置 |
JPH043017A (ja) | 1990-04-20 | 1992-01-08 | Fujitsu General Ltd | Plzt光シャッタアレーの電極形成方法 |
JP3325413B2 (ja) * | 1994-12-09 | 2002-09-17 | 株式会社東芝 | 蒸気タービンの熱応力監視保護装置 |
JPH08303210A (ja) * | 1995-05-11 | 1996-11-19 | Hitachi Ltd | 火力発電プラントの自律適応最適化制御システム |
JPH08326506A (ja) * | 1995-05-30 | 1996-12-10 | Hitachi Ltd | 再熱蒸気タービンの加熱蒸気圧力制御方法及び再熱蒸気タービンプラント |
JP4208397B2 (ja) * | 2000-09-29 | 2009-01-14 | 株式会社東芝 | コンバインドサイクル発電プラントの起動制御装置 |
JP4723884B2 (ja) * | 2005-03-16 | 2011-07-13 | 株式会社東芝 | タービン起動制御装置およびその起動制御方法 |
IT1396516B1 (it) | 2009-11-27 | 2012-12-14 | Nuovo Pignone Spa | Metodo di controllo di modo basato su temperatura di scarico per turbina a gas e turbina a gas |
US9523313B2 (en) * | 2013-03-12 | 2016-12-20 | General Electric Company | System and method for loading a combined cycle power plant |
JP6037448B2 (ja) * | 2013-03-15 | 2016-12-07 | 三菱日立パワーシステムズ株式会社 | 蒸気タービン発電プラント |
-
2014
- 2014-10-27 EP EP14190471.4A patent/EP3015658A1/de not_active Withdrawn
-
2015
- 2015-10-05 JP JP2017541158A patent/JP6396599B2/ja not_active Expired - Fee Related
- 2015-10-05 KR KR1020177014214A patent/KR101914889B1/ko active IP Right Grant
- 2015-10-05 CN CN201580058578.5A patent/CN107075974A/zh active Pending
- 2015-10-05 RU RU2017118233A patent/RU2669537C1/ru not_active IP Right Cessation
- 2015-10-05 WO PCT/EP2015/072926 patent/WO2016066376A1/de active Application Filing
- 2015-10-05 EP EP15774624.9A patent/EP3183432A1/de not_active Withdrawn
- 2015-10-05 US US15/519,704 patent/US10436058B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3673017B2 (ja) * | 1996-05-23 | 2005-07-20 | 株式会社東芝 | 蒸気タービン起動制御装置 |
Also Published As
Publication number | Publication date |
---|---|
CN107075974A (zh) | 2017-08-18 |
RU2669537C1 (ru) | 2018-10-11 |
US20170241285A1 (en) | 2017-08-24 |
US10436058B2 (en) | 2019-10-08 |
KR20170074979A (ko) | 2017-06-30 |
WO2016066376A1 (de) | 2016-05-06 |
JP2017532503A (ja) | 2017-11-02 |
KR101914889B1 (ko) | 2018-11-02 |
EP3015658A1 (de) | 2016-05-04 |
JP6396599B2 (ja) | 2018-09-26 |
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