EP1764486A1 - Procédé pour déterminer la charge de pointe actuelle d'une centrale et système de regulation - Google Patents

Procédé pour déterminer la charge de pointe actuelle d'une centrale et système de regulation Download PDF

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Publication number
EP1764486A1
EP1764486A1 EP05020252A EP05020252A EP1764486A1 EP 1764486 A1 EP1764486 A1 EP 1764486A1 EP 05020252 A EP05020252 A EP 05020252A EP 05020252 A EP05020252 A EP 05020252A EP 1764486 A1 EP1764486 A1 EP 1764486A1
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EP
European Patent Office
Prior art keywords
power
plant
max
measured
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Withdrawn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
EP05020252A
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German (de)
English (en)
Inventor
Emil Brütsch
Thorsten Dr. Engler
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 EP05020252A priority Critical patent/EP1764486A1/fr
Priority to PCT/EP2006/066312 priority patent/WO2007031535A2/fr
Priority to EP06793475A priority patent/EP1926889A2/fr
Priority to CN2006800340562A priority patent/CN101268252B/zh
Publication of EP1764486A1 publication Critical patent/EP1764486A1/fr
Withdrawn legal-status Critical Current

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    • 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 present invention relates to a method for determining the current maximum power of a power plant, in particular a gas turbine plant or a gas and steam turbine plant.
  • the present invention relates to a control device for controlling a power plant, in particular a gas turbine plant or a gas and steam turbine plant.
  • the network operator In a power grid, the network operator must ensure the balance between the load, ie the requested power, and the power provided. Differences between the load on the one hand and the available power on the other hand lead to a change in the network frequency, which adversely affects the network operation and worst case can lead to the complete collapse of the network.
  • control reserve In order to be able to react quickly in the event of sudden imbalances between the load and the available power, the grid operators purchase reserve power from the generators, the so-called control reserve.
  • a power plant participating in the control reserve must be able to provide a given power within a certain period of time.
  • a power plant participating, for example, in the so-called minute reserve must be able to provide a certain power after a few minutes (in Germany 15 minutes).
  • Other backup modes require power to be delivered within a few seconds.
  • those control reserves that must be available within seconds are important for the frequency support operation of the network.
  • a power plant participating in the frequency support operation must be able to quickly make available the agreed reserve power, for example 5% of the maximum power, in the event of a frequency decline.
  • power plant operators must know at all times how large the currently possible maximum power of the power plant is, and adjust the power setpoint of the system on the basis of the maximum power taking into account the reserve power.
  • the maximum output mainly depends on the compressor inlet conditions, in particular on the temperature, the humidity and the pressure of the ambient air entering the compressor, as well as on the degree of contamination of the compressor and on the mains frequency.
  • the power setpoint for the current driving style of the power plant then results from the maximum power minus the agreed reserve throttle.
  • the maximum power is estimated by the power plant operator and entered the power setpoint manually. If the boundary conditions change, for example the compressor inlet conditions or the degree of contamination of the compressor, the power setpoint must be readjusted manually. The frequency of readjustment depends both on the stability of the compressor entry conditions and on the desired reliability of the control reserve to be observed.
  • Object of the present invention is to provide a suitable for automation method for determining the current maximum power of a power plant available.
  • a further object of the invention is to provide a control device for controlling a power plant on the basis of a reference variable representing a power setpoint.
  • the first object is achieved by a method according to claim 1, the second object by a control device according to claim 12 solved.
  • the third object is achieved by a power plant, in particular a gas turbine plant or a gas and steam turbine plant according to claim 15.
  • the dependent claims contain advantageous embodiments of the invention.
  • the method according to the invention can replace the estimation of the maximum power of the power plant operator and makes it possible to regulate a power plant on the basis of a reference variable representing a power setpoint.
  • the power setpoint then results from the current maximum power value determined by the method according to the invention minus the required control reserve and, if necessary, less a safety reserve.
  • the method according to the invention therefore makes it possible to automatically track the power setpoint when the boundary conditions change.
  • the agreed control reserve can thus be met automatically and precisely. Furthermore, it can be ensured that the power plant can be operated while maintaining this control reserve at maximum power and maximum efficiency.
  • the reference power can be redetermined, whereby in particular the degree of contamination of the compressor can be taken into account when determining the current maximum power.
  • the current gas turbine power and the current value of the at least one measured variable can be measured, for example, during base load conditions, and the reference power can be newly determined on the basis of the power plant model or the at least one conversion curve. Since in the calibration the compressor entry conditions are included as measured variables, and the result of the calibration depends on the state of the contamination of the air inlet filter, the filter contamination in the reference power is taken into account.
  • the conversion quantity may in particular be a conversion factor with which the reference power is to be multiplied.
  • the measured variables are measured continuously or repeatedly and the current maximum power is determined continuously or repeatedly.
  • the method according to the invention can be used in particular for determining the current desired power value of a power plant, in particular a turbine plant, from the current maximum power of the power plant.
  • the current power setpoint is then determined based on the current maximum power determined by the method according to the invention. This can be done in particular continuously or repeatedly.
  • the power setpoint calculation unit can be designed, in particular, for calculating the power setpoint value on the basis of the maximum power size, a predetermined control reserve size and a predetermined safety variable.
  • the safety variable can serve to ensure that the control reserve is reliably maintained. For example, if calibration of the reference maximum power occurs at certain intervals, the safety margin may be used, for example, to absorb shifts in the reference maximum power that occur between two calibrations.
  • the control device may include, for example, a power sensor that is designed to detect the current power of the power plant and to output a performance variable representing the current power.
  • a power sensor that is designed to detect the current power of the power plant and to output a performance variable representing the current power.
  • an updating unit which is connected to the power sensor for receiving the power quantity, for receiving the sensor size with the at least one measured variable sensor and for outputting a reference power to the memory.
  • the updating unit is designed to determine the reference power from the received power quantity and the at least one received sensor size.
  • a power plant according to the invention which can be configured in particular as a gas turbine plant or as a gas and steam turbine plant, is equipped with a control device according to the invention.
  • the power setpoint can be tracked automatically with changes in the boundary conditions.
  • the invention will be described below by way of example with reference to determining the maximum power of a gas and steam turbine plant.
  • the invention is not limited to use in gas and steam turbine plants. In particular, it can also be used in gas turbine plants without a downstream steam turbine.
  • the gas and steam turbine plant 1 shown schematically in FIG. 1 comprises a gas turbine plant 1a and a steam turbine plant 1b.
  • the gas turbine plant 1a is equipped with a gas turbine 2, a compressor 4 and at least one combustion chamber 6 connected between the compressor 4 and the gas turbine 2.
  • a gas turbine 2 By means of the compressor 4, fresh air L is sucked in, compressed and fed via the fresh air line 8 to one or more burners of the combustion chamber 6.
  • the supplied air is mixed with supplied via a fuel power 10 liquid or gaseous fuel B and the mixture is then ignited.
  • the resulting combustion exhaust gases form a working medium AM of the gas turbine plant 1a, which is fed to the gas turbine 2, where it performs work under relaxation and drives a shaft 14 coupled to the gas turbine 2.
  • the shaft is coupled with the gas turbine 2 as well as with the compressor 4 and with a generator 12 to drive them.
  • a load transmission can still be connected between the compressor 4 and the generator 12 be.
  • the expanded working medium AM ' is discharged via an exhaust pipe 15 to a heat recovery steam generator 30 of the steam turbine plant 1b.
  • the steam turbine installation 1 b comprises a steam turbine 32, a condenser 34 and a feedwater pump 36.
  • the waste heat steam generator 30 is connected to the steam turbine 32 via a steam line 31. This is in turn connected via a vapor line 33 to the capacitor 34.
  • a condensate line 35 connects the condenser 34 to the heat recovery steam generator 30.
  • the steam generator 30, the steam turbine 32, the condenser 34, the steam lines 31 and 33 and the condensate line 35 together form a water-steam cycle of the steam turbine plant.
  • the circulation of the condensate or the steam is accomplished by the condensate pump 36. It should be noted at this point that the circuit diagram shown in FIG.
  • the heat recovery steam generator 30 often includes a plurality of evaporators, reheater, preheater, etc. with which the steam can be further heated or the condensate can be preheated.
  • the steam turbine 32 may have a plurality of turbine stages, which are designed for different steam pressures and steam temperatures. These are usually connected in series and increase the efficiency of the steam turbine plant.
  • a control circuit for regulating the power of the gas turbine plant 1a of the gas and steam turbine plant 1 is shown schematically in FIG 2 as a block diagram.
  • the control circuit is used in the present example for acting on the combustion chamber 6 supplied air mass flow and / or the combustion chamber 6 supplied fuel mass flow.
  • the air supply and the fuel supply therefore form the controlled system 56 of the control circuit 50.
  • an actuator 54 is present, which control signals for a fuel supply valve and for the vanes of the first compressor vane row or rows.
  • disturbances z which act on the controlled system 56, also lead to changes in the gas turbine power.
  • the current power P of the gas turbine is measured and output in the form of a power quantity.
  • the power quantity is subtracted from a power setpoint W in a subtracter 60 and the difference is forwarded to the controller 52.
  • R denotes the required control reserve (in percent) and S a security (also in percent) which serves to be able to comply with the required control reserve with the greatest possible certainty.
  • the currently possible maximum power P max also enters this formula. However, this maximum power is not a constant quantity, but depends on boundary conditions.
  • Such boundary conditions x i are in particular compressor entry conditions such as the temperature, humidity and pressure of entering the compressor 4 air L.
  • compressor entry conditions such as the temperature, humidity and pressure of entering the compressor 4 air L.
  • achievable maximum power from the degree of contamination of the compressor 4, the degree of contamination of the air intake filter, the aging of the power plant components, the grid frequency, etc. influenced.
  • the determination of the desired power value P soll is explained below with reference to the block diagram shown in FIG.
  • the block diagram shows a device for determining the desired power value, which enters into the control circuit 50 shown in FIG.
  • the device 70 includes a number of measurement size sensors, shown as block 72.
  • Measured variable sensors can be, for example, sensors which determine the compressor inlet temperature, the compressor inlet humidity, the compressor inlet pressure of the ambient air, the mains frequency, etc.
  • the device 70 includes as a further sensor, a power sensor 73, with which the current gas turbine power can be detected.
  • the device 70 further comprises a calculation unit 74, which includes a gas turbine model and outputs a conversion factor f (x i ), a memory 75, in which a reference power P ref is stored, and a multiplication unit 76, which is connected to the memory 75 for receiving the reference power P ref and connected to the calculation unit 74 for receiving the conversion factor f (x i ).
  • the multiplication unit 76 is designed to calculate the maximum power by multiplying the reference power P ref by the conversion factor f (x i ) and outputting the value of the maximum power P max .
  • the device 70 comprises a power setpoint calculation unit 78 as well as two memories or memory locations 80, 82 in which the value R for the control reserve or the value S for the safety are stored.
  • the device 70 may comprise an offset memory 84, in which offset values for the measured variables x i measured by the measuring-quantity sensors 72 are stored. These offsets can be added to the determined measured variables x i before they are input to the calculation unit 74.
  • the device 70 includes one with the calculation unit 74 for receiving the conversion factor f (x i ) and reference power calculation unit 86 connected to the memory 75 for outputting the reference power P ref and a trigger unit 88 connected to the memory 75 for triggering a memory operation in the memory 75.
  • the determination of the power target value P soll is carried out with the embodiment illustrated in FIG 3 device 70 by using the measured values detected by the measuring size sensors 72 are x i transmitted to the calculation unit 74 that includes a model of the gas turbine plant and on the basis of the detected measured variables the conversion factor f (x i ).
  • offsets can be added to the acquired measured variables before the measured variables x i are entered into the calculation unit 74.
  • the conversion factor is forwarded to the multiplication unit 76, where it is multiplied by a reference power P ref related to the memory 75.
  • the product of the reference power P ref and the conversion factor f (x i ) provides the maximum possible power P max of the gas turbine plant.
  • the calculation unit 74 and the multiplication unit 76 together form a conversion unit which converts the reference power P ref into the current maximum power P max on the basis of the measured values x i .
  • the power setpoint calculation unit 78 the power setpoint P soll is then calculated according to the formula 1 from the maximum power P max , the required control reserve R and the safety S and forwarded as a reference variable to the control circuit 50 shown in FIG.
  • a new reference power P ref is calculated and stored in the memory 75. Calibration is possible, for example, during base load conditions of the gas turbine plant.
  • the current gas turbine power is detected by means of the power sensor 73 and forwarded to the reference power calculation unit 86. It also receives from the calculation unit 74 the current conversion factor f (x i ).
  • the reference power P ref then results from the quotient of the measured power, hereinafter referred to P kal , and the conversion factor determined on the basis of the simultaneously measured measured variables x i , referred to below as f kal (x i ).
  • the thus determined new reference power P ref is then stored in the memory 75 as a new, ie calibrated, reference power and is subsequently available to the conversion unit 76 as a reference power P ref .
  • a trigger unit 88 serves to trigger the storage of the new reference power.
  • the calculation unit 74, the reference power calculation unit 86 and the trigger unit 88 together form an updating unit for updating or calibrating the reference power P ref .
  • a model of the power plant was used in the calculation unit 74.
  • conversion curves which represent a relationship f i for each detected measured variable x i .
  • the conversion factor f (x i ) then results from the product of the individual factors f i .
  • the regular calibration of the reference power P ref makes it possible to take account of changing contamination states of the compressor. For example, an increasing contamination with unchanged position of the compressor guide vanes leads to a reduction of the air mass flow to the combustion chamber. Since the maximum possible power at a given turbine exhaust gas temperature depends, inter alia, on the air mass flow, increasing pollution leads to a reduction in the maximum turbine output.
  • the calibration can take into account the increasing reduction in maximum power. After cleaning the compressor is then again the largest possible air mass flow available. By means of a recalibration, the system can then be adapted to the cleaned compressor again.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Feedback Control In General (AREA)
  • Control Of Turbines (AREA)
EP05020252A 2005-09-16 2005-09-16 Procédé pour déterminer la charge de pointe actuelle d'une centrale et système de regulation Withdrawn EP1764486A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP05020252A EP1764486A1 (fr) 2005-09-16 2005-09-16 Procédé pour déterminer la charge de pointe actuelle d'une centrale et système de regulation
PCT/EP2006/066312 WO2007031535A2 (fr) 2005-09-16 2006-09-13 Procede pour determiner la puissance maximale reelle d'une centrale electrique et dispositif de reglage associe
EP06793475A EP1926889A2 (fr) 2005-09-16 2006-09-13 Procede pour determiner la puissance maximale reelle d'une centrale electrique et dispositif de reglage associe
CN2006800340562A CN101268252B (zh) 2005-09-16 2006-09-13 确定发电设备的当前最大功率的方法以及调节装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05020252A EP1764486A1 (fr) 2005-09-16 2005-09-16 Procédé pour déterminer la charge de pointe actuelle d'une centrale et système de regulation

Publications (1)

Publication Number Publication Date
EP1764486A1 true EP1764486A1 (fr) 2007-03-21

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EP05020252A Withdrawn EP1764486A1 (fr) 2005-09-16 2005-09-16 Procédé pour déterminer la charge de pointe actuelle d'une centrale et système de regulation
EP06793475A Withdrawn EP1926889A2 (fr) 2005-09-16 2006-09-13 Procede pour determiner la puissance maximale reelle d'une centrale electrique et dispositif de reglage associe

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EP06793475A Withdrawn EP1926889A2 (fr) 2005-09-16 2006-09-13 Procede pour determiner la puissance maximale reelle d'une centrale electrique et dispositif de reglage associe

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EP (2) EP1764486A1 (fr)
CN (1) CN101268252B (fr)
WO (1) WO2007031535A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH699324A1 (de) * 2008-08-14 2010-02-15 Alstom Technology Ltd Verfahren zur bewertung der maximalen stromerzeugungskapazität und zum regeln einer spezifizierten leistungsreserve eines gasturbinenkraftwerks oder eines gas/dampf-kombikraftwerks und stromerzeugungssystem zur verwendung des verfahrens.
WO2009156299A3 (fr) * 2008-06-26 2010-06-10 Alstom Technology Ltd Procédé d'estimation de la capacité de production d'énergie maximum et de gestion d'une réserve d'énergie spécifiée pour centrale énergétique à turbine à gaz à cycle simple ou combinée et système de production d'énergie s'utilisant avec ce procédé
ITMI20101428A1 (it) * 2010-07-29 2012-01-30 Ansaldo Energia Spa Metodo per la gestione del margine di riserva primaria in un impianto per la produzione di energia elettrica e impianto per la produzione di energia elettrica
EP3012420A1 (fr) * 2014-10-24 2016-04-27 Siemens Aktiengesellschaft Procédé de synchronisation d'une turbine au réseau électrique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1037346A (en) * 1962-04-23 1966-07-27 Gen Electric A steam turbine system
JPS59122712A (ja) * 1982-12-28 1984-07-16 Toshiba Corp 複合サイクル発電プラントの負荷制御装置
US5388411A (en) * 1992-09-11 1995-02-14 General Electric Company Method of controlling seal steam source in a combined steam and gas turbine system
US6507126B1 (en) * 1999-09-11 2003-01-14 Robert Bosch Gmbh Method for load regulation in a thermal engine having a power generator
EP1347235A1 (fr) * 2002-03-20 2003-09-24 Babcock Borsig Power Systems GmbH Procédé et systéme pour déterminer la quantité de vapeur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3963479B2 (ja) * 1996-03-07 2007-08-22 シーメンス アクチエンゲゼルシヤフト 発電所プラントの迅速な出力調節のための方法および装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1037346A (en) * 1962-04-23 1966-07-27 Gen Electric A steam turbine system
JPS59122712A (ja) * 1982-12-28 1984-07-16 Toshiba Corp 複合サイクル発電プラントの負荷制御装置
US5388411A (en) * 1992-09-11 1995-02-14 General Electric Company Method of controlling seal steam source in a combined steam and gas turbine system
US6507126B1 (en) * 1999-09-11 2003-01-14 Robert Bosch Gmbh Method for load regulation in a thermal engine having a power generator
EP1347235A1 (fr) * 2002-03-20 2003-09-24 Babcock Borsig Power Systems GmbH Procédé et systéme pour déterminer la quantité de vapeur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 244 (M - 337) 9 November 1984 (1984-11-09) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8620482B2 (en) 2008-06-26 2013-12-31 Alstom Technology Ltd Method of estimating the maximum power generation capacity and for controlling a specified power reserve of a single cycle or combined cycle gas turbine power plant, and a power generating system for use with said method
WO2009156299A3 (fr) * 2008-06-26 2010-06-10 Alstom Technology Ltd Procédé d'estimation de la capacité de production d'énergie maximum et de gestion d'une réserve d'énergie spécifiée pour centrale énergétique à turbine à gaz à cycle simple ou combinée et système de production d'énergie s'utilisant avec ce procédé
JP2011525590A (ja) * 2008-06-26 2011-09-22 アルストム テクノロジー リミテッド シングルサイクルまたはコンバインドサイクルガスタービン発電プラントの最大発電容量を推定する方法、指定された予備電力を制御する方法、および同方法とともに使用される発電システム
US8700223B2 (en) 2008-06-26 2014-04-15 Alstom Technology Ltd. Method of estimating the maximum power generation capacity and for controlling a specified power reserve of a single cycle or combined cycle gas turbine power plant, and a power generating system for use with said method
CH699324A1 (de) * 2008-08-14 2010-02-15 Alstom Technology Ltd Verfahren zur bewertung der maximalen stromerzeugungskapazität und zum regeln einer spezifizierten leistungsreserve eines gasturbinenkraftwerks oder eines gas/dampf-kombikraftwerks und stromerzeugungssystem zur verwendung des verfahrens.
ITMI20101428A1 (it) * 2010-07-29 2012-01-30 Ansaldo Energia Spa Metodo per la gestione del margine di riserva primaria in un impianto per la produzione di energia elettrica e impianto per la produzione di energia elettrica
EP2412936A1 (fr) * 2010-07-29 2012-02-01 Ansaldo Energia S.p.A. Procédé de contrôle de la marge de sécurité primaire dans une installation de production d'électricité et installation de production d'électricité
EP3012420A1 (fr) * 2014-10-24 2016-04-27 Siemens Aktiengesellschaft Procédé de synchronisation d'une turbine au réseau électrique
WO2016062533A1 (fr) * 2014-10-24 2016-04-28 Siemens Aktiengesellschaft Procédé et dispositif de commande pour synchroniser une turbine avec le réseau électrique
CN107075973A (zh) * 2014-10-24 2017-08-18 西门子公司 用于将涡轮机与电网同步的方法和控制装置
RU2664272C1 (ru) * 2014-10-24 2018-08-15 Сименс Акциенгезелльшафт Способ и устройство управления для синхронизации турбины с электрической сетью
CN107075973B (zh) * 2014-10-24 2019-04-19 西门子公司 用于将涡轮机与电网同步的方法和控制装置
US10305288B2 (en) 2014-10-24 2019-05-28 Siemens Aktiengesellschaft Method and control device for synchronizing a turbine with the current network

Also Published As

Publication number Publication date
EP1926889A2 (fr) 2008-06-04
CN101268252A (zh) 2008-09-17
WO2007031535A2 (fr) 2007-03-22
CN101268252B (zh) 2011-04-06
WO2007031535A3 (fr) 2007-09-07

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