EP0070047B1 - Dispositif de détermination de la puissance d'un groupe turbo pendant des dérangements du réseau - Google Patents

Dispositif de détermination de la puissance d'un groupe turbo pendant des dérangements du réseau Download PDF

Info

Publication number
EP0070047B1
EP0070047B1 EP82200541A EP82200541A EP0070047B1 EP 0070047 B1 EP0070047 B1 EP 0070047B1 EP 82200541 A EP82200541 A EP 82200541A EP 82200541 A EP82200541 A EP 82200541A EP 0070047 B1 EP0070047 B1 EP 0070047B1
Authority
EP
European Patent Office
Prior art keywords
turbine
power
group
disturbance
turbine part
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
Application number
EP82200541A
Other languages
German (de)
English (en)
Other versions
EP0070047A1 (fr
Inventor
Karel Dr. Dipl.-Ing. Skala
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to AT82200541T priority Critical patent/ATE15526T1/de
Publication of EP0070047A1 publication Critical patent/EP0070047A1/fr
Application granted granted Critical
Publication of EP0070047B1 publication Critical patent/EP0070047B1/fr
Expired 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
    • 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
    • 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
    • F01D17/24—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 electrical

Definitions

  • the present invention relates to a device for determining the power of a turbo group during network faults.
  • GB-A-1 267 590 describes a control of a steam turbine group which allows the control of the turbine speed, a discharge pressure and the outlet pressure, but only two of the quantities mentioned can be changed if the third is to remain constant.
  • the size that is to be kept constant is included in the control loop by a switching device.
  • the present invention defined in claim 1, describes a device which can immediately take over the power control of the turbo group in the event of such a fault.
  • the power measurement for the device in question is based on the determination of the values of the state variables of the work equipment, that is, the steam in the two versions to be described.
  • the simplest method which is used in the device according to FIG. 4 is to determine the instantaneous mechanical power P (t) of the turbo group solely on the basis of the vapor pressures.
  • the turbine part is to be understood as a section of the turbine between two tapping points for measuring the vapor pressures p 1, i , p 2.i etc.
  • ⁇ h i (t) is the instantaneous enthalpy difference in the case of polytropic expansion and P i, Verl is the power loss of the turbine part in question.
  • a state marked with the index IC is to be understood as a reference state from which the values of all relevant state variables are known exactly, e.g. B. the steady state at 100% load.
  • the power loss P i Verl summarizes the leakage, ventilation and friction losses. It can be approximated by a constant without appreciably affecting the accuracy.
  • Equation (3) therefore has the form as a function of p i :
  • the first link of (6) is in a known manner by decomposing the radical into and forming the sum or difference of p 1, i and p 2, i in sum-forming elements, ie in an adder 1 and in a subtractor 2, multiplying them in a multiplier and extracting the root in an eraser 4.
  • This is followed in a multiplier 6 by the multiplication of this value by the constant C i supplied by a read-only memory 5, a multiplication by the difference (p 1, i -p 2, i ) supplied by the subtractor 2 in a multiplier 7, by multiplication and in multipliers 8 and 9, respectively, which factors are supplied to these multipliers via inverters 10 and 11 and potentiators 12 and 13 fed with p 1, i and p 2, i .
  • Fig. 3 shows in a block diagram the control loop of a steam turbine group 17 with the device 18 according to the invention. It is assumed that the vapor pressures are extracted from two turbine parts, the pressure tapping line 19 for the pressure p 1,1 , the pressure tapping line 20 for the Pressure p 2.1 and at the same time for the pressure p 1.2 , which is equal to p 2.1 , see FIG. 1, and the pressure tapping line 21 is provided for the pressure p 2.2 .
  • the generator 22 feeds a power controller 25 with the instantaneous value of the electrical load via a signal line 23 and a changeover relay 24.
  • the control signals of the power controller 25 reach the actuators of the control valve group 26, which adapt the steam supply to the turbo group 17 to the respective need. This is the operation in the case of an undisturbed network, in which the contact element 27 of the switching relay 24 is in the position (27) shown in broken lines.
  • the interference signal coming from the generator causes the contact element to switch to the fully drawn position 27, and the control then operates with the device 18 according to the invention.
  • Fig. 4 shows the schematic of a simplified embodiment of the device, the change in the current enthalpy difference for the generation of the output signal being neglected.
  • the constant C i results from the assumed power loss P i, Verl as in the first case from P i / P i, lC , where P i, lC is the power in an operating state IC, for example full load, in which the constant a i , K, can be easily determined. Since these two constants apply to the entire operating area of interest, the following applies to any state: and for a comparative state IC:
  • the control loop corresponds to that shown in FIG. 3.
  • the tapping for the measurement of the pressures is expediently carried out on the tapping lines which are present at the beginning and end of the turbine parts for operational reasons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Turbines (AREA)
  • Dc Machiner (AREA)
  • Control Of Electric Motors In General (AREA)

Claims (3)

1. Dispositif de détermination de la puissance d'un groupe turbo pendant des perturbations du réseau, dans lequel le groupe turbo est subdivisé en n éléments de turbine, à l'entrée et à la sortie de chacun desquels il est prévu un point de mesure de la pression du fluide de travail, servant en général pour le contrôle du fonctionnement, et dans lequel le dispositif comprend les éléments suivants: un régulateur (25) et des organes de réglage (26) pour la régulation de la puissance au cours du fonctionnement normal non perturbé, un relais commutateur (24) actionnable par un signal émis par la perturbation et qui est destiné à activer le dispositif (18) en cas de perturbation, des conducteurs de signaux de pression (19, 20, 21) qui sont destinés à recevoir des signaux à partir des points précités de mesure de ta pression dans le groupe turbo, ainsi que n groupes d'éléments de calculateur, dont chacun est associé à un dos n éléments de turbine, les éléments de calculateur (1-16; 28-36) de chaque groupe étant constitués de telle façon qu'ils transforment les pressions (p1,i,p2,i, p1,i+1,p2,i+1,... p1.n,p2,n) qui sont leurs grandeurs d'entrée, en un signal de sortie représentatif de la puissance instantanée Pi(t) d'un élément de turbine (i) en cas de perturbation, et un additionneur (16; 36) étant prévu pour rassembler les signaux de sortie Pi(t) en un seul signal de sortie résultant, représentatif de la puissance instantanée globale P(t) du groupe turbo, ce signal étant destiné à être appliqué au régulateur (25) du groupe turbo (17) pour assurer la régulation pendant la durée de la perturbation.
2. Dispositif suivant la revendication 1, caractérisé en ce que les éléments de calculateur (1-16) des n groupes sont chacun agencés pour permettre l'exploitation de la fonction
Figure imgb0036
dans laquelle p1,i et p2,i représentent les pressions à l'entrée, respectivement à la sortie de l'élément de turbine (i), e1,i et e2,i les exposants, déterminés par une opération d'optimisation, correspondant à l'entrée, respectivement à la sortie de l'élément de turbine (i), la constante
Figure imgb0037
avec
Figure imgb0038
avec Δ hi,lc= différence d'enthalpie dans l'élément de turbine (i), la constante bi les pertes de puissance Pi,Verl dans l'élément de turbine (i) et l'indice IC la valeur de la grandeur considérée correspondant à un état de fonctionnement stationnaire pris comme référence, par exemple la pleine charge.
3. Dispositif suivant la revendication 1, caractérisé en ce que les éléments de calculateur (28-36) des n groupes sont chacun agencés pour permettre l'exploitation de la fonction
Figure imgb0039
dans laquelle p1,i et p2,i représentent les pressions à l'entrée, respectivement à la sortie de l'élément de turbine (i), la constante
Figure imgb0040
la constante b, les pertes de puissance Pi,Verl dans l'élément de turbine (i) et l'indice IC la valeur de la grandeur considérée correspondant à un état de fonctionnement stationnaire pris comme référence, par exemple la pleine charge.
EP82200541A 1981-07-13 1982-05-06 Dispositif de détermination de la puissance d'un groupe turbo pendant des dérangements du réseau Expired EP0070047B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82200541T ATE15526T1 (de) 1981-07-13 1982-05-06 Einrichtung zur leistungsbestimmung einer turbogruppe waehrend netzstoerungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4565/81 1981-07-13
CH456581 1981-07-13

Publications (2)

Publication Number Publication Date
EP0070047A1 EP0070047A1 (fr) 1983-01-19
EP0070047B1 true EP0070047B1 (fr) 1985-09-11

Family

ID=4278453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200541A Expired EP0070047B1 (fr) 1981-07-13 1982-05-06 Dispositif de détermination de la puissance d'un groupe turbo pendant des dérangements du réseau

Country Status (4)

Country Link
US (1) US4451740A (fr)
EP (1) EP0070047B1 (fr)
AT (1) ATE15526T1 (fr)
DE (1) DE3266140D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113691A (en) * 1989-02-26 1992-05-19 Westinghouse Electric Corp. Turbine-medium flow monitor
IT1248448B (it) * 1990-02-26 1995-01-19 Westinghouse Electric Corp Metodo e dispositivo per controllare la portata di un fluido in una turbina

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE582194A (fr) * 1958-09-03 1960-12-16 Schoppe & Faeser Gmbh Procédé pour le réglage d'un groupe composé d'un générateur de vapeur et d'une turbine à vapeur
CA933629A (en) * 1968-07-08 1973-09-11 Tokyo Shibaura Denki Kabushiki Kaisha (Also Known As Tokyo Shibaura Elec Tric Co., Ltd.) Extraction and back-pressure turbine control system
US3657552A (en) * 1970-06-01 1972-04-18 Robert H Park Method for employment of fast turbine valving
US3999390A (en) * 1974-04-25 1976-12-28 Westinghouse Electric Corporation HTGR power plant turbine-generator load control system
US4039846A (en) * 1975-08-18 1977-08-02 Allied Chemical Corporation Control of a steam-heating power plant
CH617494A5 (fr) * 1975-08-22 1980-05-30 Bbc Brown Boveri & Cie
US4120159A (en) * 1975-10-22 1978-10-17 Hitachi, Ltd. Steam turbine control system and method of controlling the ratio of steam flow between under full-arc admission mode and under partial-arc admission mode
DE2812820C2 (de) * 1978-01-31 1986-04-03 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Regeleinrichtung für eine Dampfturbine
US4271473A (en) * 1979-09-27 1981-06-02 Leeds & Northrup Company Control of parallel operated turbines in cogeneration

Also Published As

Publication number Publication date
US4451740A (en) 1984-05-29
ATE15526T1 (de) 1985-09-15
EP0070047A1 (fr) 1983-01-19
DE3266140D1 (en) 1985-10-17

Similar Documents

Publication Publication Date Title
DE102011012710A1 (de) Schnelle Identifikation und Erzeugung von Prozessmodellen
EP3376626A1 (fr) Procédé de réglage de la puissance active d'un parc éolien et un tel parc éolien
EP1892820A1 (fr) Procédé destiné à calculer le rapport pour la qualité d'un réseau culinaire à commutateur de fréquence
EP0070047B1 (fr) Dispositif de détermination de la puissance d'un groupe turbo pendant des dérangements du réseau
DE2854315C2 (de) Einrichtung zum Bestimmen von die Netzfrequenz beeinflussenden Störungen in elektrischen Energieversorgungsnetzen und Verwendung einer derartigen Einrichtung in einer adaptiven Frequenzregeleinrichtung für elektrische Energieversorgungsnetze
EP3376026B1 (fr) Procédé de réglage de la puissance active d'un parc éolien et parc éolien correspondant
DE1523535C3 (de) Selbstanpassender Regelkreis
EP0098624A1 (fr) Procédé pour détecter des défauts ou la direction des défauts dans des lignes électriques et moyens pour sa mise en oeuvre
DE3541148C3 (de) Verfahren zur Regelung einer Dampfturbine
EP3542229B1 (fr) Dispositif et procédé de détermination des paramètres d'un dispositif de réglage
CH679235A5 (fr)
DE2812820A1 (de) Verfahren und einrichtung zur regelung einer dampfturbine
DE3026975A1 (de) Vorrichtung zur regelung der drehzahl eines induktionsmotors
DE2828645A1 (de) Einrichtung zur steuerung von mindestens zwei hydraulischen turbinen
WO2004005675A2 (fr) Procede et dispositif de regulation du regime d'une turbine connectee a un reseau d'alimentation electrique par l'intermediaire d'un generateur
DE69824420T2 (de) Steuer- und Überwachungseinrichtung für die Öffnung oder die Schliessung eines elektrischen Betätigungselementes
DE10011607A1 (de) Verfahren und Vorrichtung sowie Computerprogrammprodukt zum Betrieb einer technischen Anlage
EP0704778B1 (fr) Procédé de distribution d'énergie dans des installations et dispositif pour sa mise en oeuvre
DE2103967A1 (de) Drehzahl Lastregelung fur eine Gasturbine
DE2814963A1 (de) Anordnung zur extremalsteuerung eines objekts mit unimodularer guetefunktion
DE19729632C1 (de) Verfahren zur Einstellung mehrerer Regler zur Regelung eines aus gekoppelten Regelstrecken bestehenden Regelstreckensystems
DE2046206A1 (de) Nachbildung eines Energieversorgungs netzes
EP1165951B1 (fr) Procede de regulation d'une turbine a vapeur a soutirage de vapeur, dispositif de regulation y relatif et turbine a vapeur a soutirage de vapeur
DE3336596C2 (de) Verfahren zum Regeln eines in Kraft-/Wärmekopplung betriebenen Kraftwerkblockes
DE2223647C2 (de) Verfahren und Schaltungsanordnung zur Überwachung der Erreichung und Überschreitung einer vorgewählten Tangentenrichtlinie der Charakteristik zweier gegenseitig abhängiger, zeitlich veränderlicher Gleichspannungsgrößen

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

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI SE

17P Request for examination filed

Effective date: 19830509

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI SE

REF Corresponds to:

Ref document number: 15526

Country of ref document: AT

Date of ref document: 19850915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3266140

Country of ref document: DE

Date of ref document: 19851017

ET Fr: translation filed
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930413

Year of fee payment: 12

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

Ref country code: BE

Payment date: 19930415

Year of fee payment: 12

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

Ref country code: AT

Payment date: 19930420

Year of fee payment: 12

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

Ref country code: FR

Payment date: 19930422

Year of fee payment: 12

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

Ref country code: SE

Payment date: 19930426

Year of fee payment: 12

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

Ref country code: DE

Payment date: 19930706

Year of fee payment: 12

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

Ref country code: CH

Payment date: 19930819

Year of fee payment: 12

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

Ref country code: GB

Effective date: 19940506

Ref country code: AT

Effective date: 19940506

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

Ref country code: SE

Effective date: 19940507

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

Ref country code: LI

Effective date: 19940531

Ref country code: CH

Effective date: 19940531

Ref country code: BE

Effective date: 19940531

BERE Be: lapsed

Owner name: BBC A.G. BROWN BOVERI & CIE

Effective date: 19940531

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

Effective date: 19940506

EUG Se: european patent has lapsed

Ref document number: 82200541.9

Effective date: 19941210

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

Ref country code: FR

Effective date: 19950131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19950201

EUG Se: european patent has lapsed

Ref document number: 82200541.9

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST