EP0842350B1 - Regelsystem zur drehzahlregelung einer turbine sowie verfahren zur regelung der drehzahl einer turbine bei lastabwurf - Google Patents

Regelsystem zur drehzahlregelung einer turbine sowie verfahren zur regelung der drehzahl einer turbine bei lastabwurf Download PDF

Info

Publication number
EP0842350B1
EP0842350B1 EP96924760A EP96924760A EP0842350B1 EP 0842350 B1 EP0842350 B1 EP 0842350B1 EP 96924760 A EP96924760 A EP 96924760A EP 96924760 A EP96924760 A EP 96924760A EP 0842350 B1 EP0842350 B1 EP 0842350B1
Authority
EP
European Patent Office
Prior art keywords
turbine
control
speed
controller
value
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.)
Expired - Lifetime
Application number
EP96924760A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0842350A1 (de
Inventor
Bernhard Jerye
Alfred Schwope
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
Publication of EP0842350A1 publication Critical patent/EP0842350A1/de
Application granted granted Critical
Publication of EP0842350B1 publication Critical patent/EP0842350B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
    • F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical

Definitions

  • the invention relates to a control system for speed control a turbine for generating electricity with a first Rule structure in idle and / or island operation the turbine is used for speed control, and a method to regulate the speed of a turbine during load shedding.
  • the turbine coupled to the generator so that the speed of the turbine is determined by the nominal speed (synchronous speed) and the speed controller of the control, for example the fuel supply with a gas turbine or the steam supply with one Steam turbine, is used.
  • DE-AS 1 296 657 describes an electrohydraulic controller described for the live steam valve of a steam turbine.
  • the Live steam valve is dependent on an opening regulator regulated by his position.
  • As the setpoint of the control serves either one of the speed or one of the power dependent size.
  • a load shedding i.e. when suddenly Disconnecting the synchronous generator from the network, is a pure speed control performed.
  • a Load step relay not specified, used.
  • GB 2 011 126 A describes a control system for a gas turbine described in which a fuel supply valve with a PI controller is regulated.
  • This is a control system which in the pure network operation of the gas turbine plant is a leader and is designed to handle load changes appropriate readjustment guaranteed.
  • Such control systems contain the conflict that the integral part a long time constant for good control quality and for the fastest possible response to a change the load of the gas turbine, however, requires a short time constant. Even if an additional fuel return valve is installed, through the fuel when there is a change in load returned and thus the amount of the flowing into the combustion chamber Fuel is reduced, causes the selected Time constant of the integrator part undesirable fluctuations in the speed of the turbine.
  • a quick adjustment of the Amount of fuel required after a load change Speed i.e. adjusting the speed as quickly as possible to the required constant speed is done by a Superposition of the speed difference signal with a constant Signal. This will answer the integrator the difference signal accelerates.
  • the speed difference signal is constantly on the function generator on. The function generator thus reduces to a change in speed corresponding to that of zero different speed difference signal, so that about that Fuel supply valve reduces the amount of fuel supplied is.
  • DE 26 27 591 B2 describes a control device for turbines specified with a speed controller and a power controller.
  • the two controllers are connected with a minimum selection structure and are during a network operation of the turbine tracked each other. Due to the minimum selection structure the smaller value of the speed controller or the power controller selected and fed to a proportional element, which generates a valve control value.
  • the speed controller is designed so that when a sudden Load shutdown the resulting increase in the speed of the Turbine is kept small, in particular an increase of only about 1% compared to the operating speed.
  • a speed controller that a proportional, a Integral and a differential portion.
  • the load on the turbine from the generator is determined by the Differential portion of the speed controller output immediately steered down, and the turbine to a set Number of revolutions adjusted.
  • the increased with a load shedding Rotation speed is thus through the differential part immediately decreased again.
  • the differential part as a signal directly the network frequency and only that Proportional and the integral part the difference from the target frequency and mains frequency supplied.
  • the object of the invention is a uniform and simple Control system without additional load jump device for a turbine to indicate which of a quick release when a load is shed the turbine prevented.
  • Another object of the invention is a method of controlling the speed to be indicated in the event of a load shedding of a turbine.
  • the first object is achieved by a control system for speed control of a turbine for generation of electricity with a first rule structure with a PI controller that is used with a speed control Actuator is connectable and at idle and / or Island operation of the turbine is used for speed control and at feeds a closing signal to the actuator, wherein a deviation signal can be fed to the first control structure which is the difference between the setpoint and the actual value Speed is dependent.
  • the P controller of the first control structure preferably has such a proportionality constant that if the deviation signal is present with a predefinable minimum size the output signal of the I controller assumes the value zero.
  • the control system with the first control structure ensures that without additional equipment or electrical Circuits an immediate control of an actuator he follows. This will result in the occurrence of a load shedding Increase the speed to a permissible, none Limited short-circuiting value.
  • the PI controller is suitable for both speed control the turbine at idle and / or island operation as well as for a control of the actuator so that this after a Load shedding directly through a closing signal into a predefinable Position is brought.
  • the actuator remains in this position for one determined by the height of the load shedding Period of time and after that period of time it will go through an increase in the output signal of the first control structure in one required for idle and / or island operation Position adjusted.
  • a corresponding deviation signal can be used to achieve that the integrator integrates down to zero and at this value during turbine operation remains. This is achieved, for example, in that the first control structure during normal network operation not control the actuator, but always one of Receives zero different deviation signal, causing the first Rule structure is in an overridden state.
  • the output signal The first rule structure is defined by a maximum output signal value limited. This maximum The output signal value is derived from the output signal of the P controller dominates. Is the proportionality constant K1 of the P controller chosen so that the product of the proportionality constant and the deviation signal is greater than or equal to that is the maximum output signal of the first control structure the output signal of the I controller is automatically limited to zero.
  • the first control structure By resetting the deviation signal the first control structure also supplies the value zero an output signal immediately after the load shedding occurs, which also has the value zero. This "zero" output signal is therefore immediately after the load shedding to the actuator, which hereby immediately sets its predetermined Position, in particular a closed position.
  • the deviation signal is made zero, for example, by setting the speed setpoint to the value of the synchronous speed which is set during network operation and when a load shedding occurs with the actual speed value matches.
  • the time period in which the actuator in the predeterminable Position, in particular a closed position, remains, depends on the amount of load shedding, in particular proportional to this.
  • the first rule structure leads speed control in such a way that the specified setpoint, especially the synchronous speed of the turbine becomes. The speed of the turbine increases after a load shedding over the synchronous speed and falls after reaching one maximum value again.
  • a control of the actuator for example reopen a control valve so that the speed in Dependency of the parameters and the control algorithm (P1 algorithm) the first control structure of the synchronous speed is adjusted.
  • the control system preferably has a second control structure and a correction value structure.
  • the correction value structure is with the first rule structure as well as the second rule structure connected so that when idling and / or island operation, tracking the output signal the second rule structure on the value of the output signal the first rule structure.
  • the second task is performed by a control procedure the speed of a turbine released during load shedding, by adding a first control structure to the speed control Idle and / or island operation is used and the one PI controller has a deviation signal supplied during network operation is, so that the output signal of the I controller the value Assumes zero, and the deviation signal when a load shedding occurs set to zero and the output signal of the PI controller an actuator for regulating the Speed is supplied.
  • the method has the advantage of being in a single control structure both the speed at idle and / or island operation as well as in case of load shedding to avoid a quick closing the turbine is used.
  • the parameter of the PI controller ensures that the structure attached to the first rule during network operation Deviation signal overrides the first control structure is that the share of the I controller in the output signal of the first control structure is zero.
  • the actuator can, for example be a control valve which, when an input signal is present with the value zero in a minimal opening position goes so that the speed of the turbine is limited to one value which is below the maximum allowable value lies. As a result, a quick close becomes effective when the load is shed the turbine prevented.
  • the process is suitable for both gas and steam turbines, in a gas turbine that of the first control structure controlled actuator is a control valve which serves to regulate the fuel supply. With a steam turbine the actuator is a control valve which regulates serves the steam supply.
  • a control system 1 for controlling a gas turbine in network operation as well as in load shedding and idle and / or island operation is shown schematically.
  • the control system 1 has a first control structure 2 which contains a PI controller 4 and which consists of a P controller 5 (proportionality constant K1) and an I controller 6.
  • the control system 1 also contains a second control structure 7, which has a P controller (proportionality constant K2).
  • the first control structure 2 and the second control structure 7 are each connected to a generator circuit breaker 9, which is connected via a minimum selection device 11 to an actuator 3 for regulating the speed of the turbine.
  • the first control structure 2 is also connected to a correction value structure 8.
  • a limit signal Y aMIN is also present at the minimum selection device 11, which limits the actuation of the actuator 3.
  • the power is controlled via the second control structure 7.
  • the circuit breaker 9 switches the second control structure 7 to the actuator 3 via the device 11.
  • the speed of the gas turbine is therefore at its synchronous value.
  • the power control takes place in such a way that the difference x from a setpoint value W2 of the rotational speed and from the actual value W1, the synchronous value, is supplied to the second control structure 7.
  • This difference value x represents a deviation signal.
  • it is also fed to the first control structure 2, specifically to both controllers 5, 6.
  • This deviation signal leads to an overload of the first control structure 2, which is limited by its restriction value Ylmax.
  • the output signals Y p , Y i of the P controller 5 and the I controller 6 are added.
  • the sum forms the output signal Yl of the first control structure 2.
  • the output signal Yp of the P controller 5 corresponds precisely to the restriction value Ylmax of the first control structure 2.
  • By overriding and / or selecting the proportionality constant K1 integrates the I controller 6 towards zero so that its output value Yi becomes zero.
  • the initial value Yl Y p + Y i of the first control structure 1 is just Yl max .
  • the setpoint W2 has a fixedly adjustable value or a value that can be regulated by a power control system in accordance with the desired power output of the turbine.
  • the difference between this setpoint W2 and the actual value W1 is amplified by the P controller 7 and fed to the actuator 3.
  • the setpoint W2 can be predefined via a setpoint switch 12 to the synchronous speed of the turbine.
  • the setpoint W2 of the speed is set to the synchronous value, whereby actual value W1 and setpoint W2 match, so that the difference x from both values, i.e. the deviation signal, is just zero.
  • the circuit breaker 9 is switched over so that the first control structure 2 with the actuator 3 is connected.
  • Control structure 2 thus takes over the speed control of the Gas turbine.
  • the Deviation signal X has the value zero, is due to both the P controller 5 as well as on the I controller 6 an input signal with the Value zero.
  • the output signal Yp of the P controller 5 thus has also the value zero; the output signal Yi of the I controller 6 has the value zero anyway due to the above. Consequently has the output signal Yl of the first control structure 2 also the value zero.
  • This value zero becomes the actuator 3 supplied as an input signal.
  • This actuator 3 is a Control valve, which is the fuel supply to the gas turbine controls.
  • FIG. 2 does not show the temporal course of the setpoint W2 of the speed, the actual value W1 of the speed and the stroke Z of the control valve 3, not shown to scale.
  • all three values are constant, the setpoint W2 of the speed being greater than that Actual value (the synchronous value).
  • the setpoint W2 is abruptly reduced to the synchronous value (corresponds to the actual value W1 at this time).
  • the setpoint switch 12 is closed.
  • the stroke Z of the control valve 3, as described above also almost suddenly returns to a predetermined value.
  • the stroke Z of the control valve 3 remains limited to the predetermined minimum value in a controlled manner via the first control structure 2.
  • the deviation signal X becomes positive, and the first control structure 2 begins to change the stroke Z of the control valve 3 in such a way that the speed is adjusted to the synchronous value.
  • the output signal Yl of the first control structure 2 is the Correction setpoint structure 8 is supplied, one formed therein Correction setpoint dW additive to the deviation signal X second control structure 7 is supplied.
  • the structure 8 has a P controller 13, whose proportionality constant 1 / k2 the reciprocal of the proportionality constant K2 of the P controller of the second rule structure 7 having.
  • the output value of the P controller 13 becomes a holding element 14 supplied that when power switch (not shown) and generator circuit breaker 9 for network operation the turbine are switched on at the same time, the initial value holds on.
  • the stop signal delivered to the holding element 14 is generated via a logical "AND" element 15, which a control signal 16, 17 corresponding to the respective one Position of the mains switch and the generator circuit breaker 9 is supplied.
  • control system 1, the first control structure 2, the correction value structure 8 and the second control structure 7 as electrical or electronic components, as integrated circuits and / or software circuits can be realized.
  • the invention is characterized in that the mastery a load shedding achieved without an additional load shedding device becomes.
  • the control after detection of a load shedding is complete taken from the first rule structure. This serves also regulating the speed of the turbine during idling and / or island operation.
  • the rule structure has one PI controller, whose integral part during normal Mains operation is pressed to the value zero. This will be preferred achieved in that the first control structure during of the network operation constantly by a deviation signal, which the deviation between a given target and Actual value corresponds to the speed, is controlled. This deviation signal is set to the value when a load shedding occurs Set to zero so that the input and output signals of the first control structure is also just zero.
  • the output signal The first rule structure is based on an actuator transferred to the turbine, which regulates the speed serves and when the output signal is present with the value zero goes into a predetermined minimum control position.
  • Control system and the method according to the invention it is ensured that the speed at a load shedding the turbine safely below a critical value, which one Fast closing would remain.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Control Of Eletrric Generators (AREA)
EP96924760A 1995-08-03 1996-07-22 Regelsystem zur drehzahlregelung einer turbine sowie verfahren zur regelung der drehzahl einer turbine bei lastabwurf Expired - Lifetime EP0842350B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19528601A DE19528601C2 (de) 1995-08-03 1995-08-03 Regeleinrichtung zur Drehzahlregelung einer Turbine sowie Verfahren zur Regelung der Drehzahl einer Turbine bei Lastabwurf
DE19528601 1995-08-03
PCT/DE1996/001342 WO1997006351A1 (de) 1995-08-03 1996-07-22 Regelsystem zur drehzahlregelung einer turbine sowie verfahren zur regelung der drehzahl einer turbine bei lastabwurf

Publications (2)

Publication Number Publication Date
EP0842350A1 EP0842350A1 (de) 1998-05-20
EP0842350B1 true EP0842350B1 (de) 1999-01-20

Family

ID=7768639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96924760A Expired - Lifetime EP0842350B1 (de) 1995-08-03 1996-07-22 Regelsystem zur drehzahlregelung einer turbine sowie verfahren zur regelung der drehzahl einer turbine bei lastabwurf

Country Status (6)

Country Link
EP (1) EP0842350B1 (ja)
JP (1) JP4073956B2 (ja)
CZ (1) CZ29998A3 (ja)
DE (2) DE19528601C2 (ja)
RU (1) RU2156865C2 (ja)
WO (1) WO1997006351A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6116853A (en) * 1998-11-13 2000-09-12 Siemens Aktiengesellschaft Method and apparatus for checking the operating reliability of a turbine during load shedding
DE10328932A1 (de) * 2003-06-27 2005-01-13 Alstom Technology Ltd Verfahren und Vorrichtung zum Erfassen eines Lastabwurfes zwischen einer elektrische Energie erzeugenden Rotationsmaschine und einem zur Stromversorgung an die Rotationsmaschine angeschlossenen Versorgungsnetzwerkes
DE102007045167B4 (de) 2007-09-20 2020-07-02 Man Energy Solutions Se Regelsystem und -verfahren zur Regelung einer Dampfturbine
JP5888947B2 (ja) * 2011-11-25 2016-03-22 三菱日立パワーシステムズ株式会社 弁制御装置、ガスタービン、及び弁制御方法
RU2625552C1 (ru) * 2016-06-17 2017-07-14 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Способ регулирования газовых турбин при глубоких снижениях частоты в энергосистеме
RU2669146C1 (ru) * 2017-10-31 2018-10-08 Акционерное общество "Проектно-конструкторское бюро "Автоматика" Электрогидравлическая система автоматического регулирования частоты вращения ротора паровой турбины привода электрогенератора судовой гребной электрической установки
RU2670470C1 (ru) * 2017-11-13 2018-10-23 Акционерное общество "Проектно-конструкторское бюро "Автоматика" Гидросистема управления клапанами паровой турбины

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1401456A1 (de) * 1962-03-15 1968-10-24 Siemens Ag Einrichtung fuer Drehzahlregelung von Turbinen
NL296751A (ja) * 1962-08-18 1900-01-01
DE1601849C3 (de) * 1968-01-11 1975-04-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Regeleinrichtung für Turbinen mit Drehzahl- und Leistungsregelung
DE2627591B2 (de) * 1976-06-19 1981-04-16 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Regeleinrichtung für Turbinen mit Drehzahl- und Leistungsregelung
JPS5487319A (en) * 1977-12-23 1979-07-11 Nissan Motor Co Ltd Fuel control equipment of gas turbine
US4280059A (en) * 1979-12-26 1981-07-21 United Technologies Corporation Detecting power loss in free turbines

Also Published As

Publication number Publication date
DE19528601C2 (de) 1998-07-09
JPH11510579A (ja) 1999-09-14
RU2156865C2 (ru) 2000-09-27
CZ29998A3 (cs) 1998-05-13
DE19528601A1 (de) 1997-02-06
DE59601196D1 (de) 1999-03-04
WO1997006351A1 (de) 1997-02-20
JP4073956B2 (ja) 2008-04-09
EP0842350A1 (de) 1998-05-20

Similar Documents

Publication Publication Date Title
EP2872777B1 (de) Verfahren zum steuern eines elektrischen erzeugers
DE2423082A1 (de) Verfahren zur steuerung der last einer stromerzeugungsanlage
DE102011000148B4 (de) System und Verfahren zum Steuern eines Hochfahrvorgangs einer Gasturbine
EP0230636A1 (de) Wassergetriebener Maschinensatz mit wirkungsgradoptimaler Vorgabe des Drehzahlsollwertes
DE102008010543A1 (de) Verfahren zum Betreiben einer Windenergieanlage und Windenergieanlage
EP0066651B1 (de) Verfahren und Einrichtung zur Regelung eines Turbosatzes
DE2627591A1 (de) Regeleinrichtung fuer turbinen mit drehzahl- und leistungsregelung
EP0842350B1 (de) Regelsystem zur drehzahlregelung einer turbine sowie verfahren zur regelung der drehzahl einer turbine bei lastabwurf
EP1119799A1 (de) Regeleinrichtung zur regelung einer strecke mit mehreren verkoppelten regelgrössen
EP3280894A1 (de) Betrieb einer gasturbine mit einer interpolierten fahrlinienabweichung
DE2707974A1 (de) Verfahren und einrichtung zur regelung einer dampfturbinenanlage
WO2004005675A2 (de) Verfahren und vorrichtung zur drehzahlregelung einer mittels eines generators an ein elektrisches energieversorgungsnetz angeschalteten turbine
DE3541148C2 (ja)
EP0684366B1 (de) Verfahren und Einrichtung zur Steuerung und Regelung der Leistung eines Dampfkraftwerksblocks
DE102007045167B4 (de) Regelsystem und -verfahren zur Regelung einer Dampfturbine
WO1994022211A1 (de) Verfahren und regelanordnungen zur gleichstromübertragung
EP0586369B1 (de) Verfahren und schaltungsanordnung zur gleichstromübertragung
EP0108928A2 (de) Verfahren zum Regeln eines Kraftwerkblockes
DE102021206426B3 (de) Regeleinrichtung zur Regelung einer eine Brennkraftmaschine und einen mit der Brennkraftmaschine antriebswirkverbundenen Generator umfassenden Leistungsanordnung, Regelanordnung mit einer solchen Regeleinrichtung, Leistungsanordnung und Verfahren zur Regelung einer Leistungsanordnung
DE4016016C2 (ja)
DE19828446C1 (de) Verfahren zur koordinierten Regelung eines Dampfkraftwerksblockes
WO2022268783A1 (de) Regeleinrichtung zur regelung einer eine brennkraftmaschine und einen mit der brennkraftmaschine antriebswirkverbundenen generator umfassenden leistungsanordnung, regelanordnung mit einer solchen regeleinrichtung, leistungsanordnung und verfahren zur regelung einer leistungsanordnung
WO2022268780A1 (de) Regeleinrichtung zur regelung einer eine brennkraftmaschine und einen mit der brennkraftmaschine antriebswirkverbundenen generator umfassenden leistungsanordnung, regelanordnung mit einer solchen regeleinrichtung, leistungsanordnung und verfahren zur regelung einer leistungsanordnung
DE2938696C2 (de) Verfahren und Schaltungsanordnung zur Regelung der bezogenen elektrischen Leistung
WO2024033342A1 (de) Spannungsstellender wechselrichter und energieerzeugungsanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19980121

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI NL SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19980703

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SIEMENS SCHWEIZ AG

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59601196

Country of ref document: DE

Date of ref document: 19990304

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN P. & C. S.N.C.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990325

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: SIEMENS SCHWEIZ AG;INTELLECTUAL PROPERTY FREILAGERSTRASSE 40;8047 ZUERICH (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20090717

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20090709

Year of fee payment: 14

Ref country code: NL

Payment date: 20090722

Year of fee payment: 14

Ref country code: GB

Payment date: 20090713

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090918

Year of fee payment: 14

Ref country code: CH

Payment date: 20091015

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090728

Year of fee payment: 14

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20110201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100722

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110201

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100731

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59601196

Country of ref document: DE

Effective date: 20110201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100802

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100722

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100722

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100723