WO1992009024A1 - Regulateur de tension - Google Patents

Regulateur de tension Download PDF

Info

Publication number
WO1992009024A1
WO1992009024A1 PCT/AT1991/000118 AT9100118W WO9209024A1 WO 1992009024 A1 WO1992009024 A1 WO 1992009024A1 AT 9100118 W AT9100118 W AT 9100118W WO 9209024 A1 WO9209024 A1 WO 9209024A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
microprocessor
transformer
current
voltage regulator
Prior art date
Application number
PCT/AT1991/000118
Other languages
German (de)
English (en)
Inventor
Franz Gross
Original Assignee
Elin Energieversorgung Gesellschaft M.B.H.
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 Elin Energieversorgung Gesellschaft M.B.H. filed Critical Elin Energieversorgung Gesellschaft M.B.H.
Publication of WO1992009024A1 publication Critical patent/WO1992009024A1/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/24—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using bucking or boosting transformers as final control devices
    • G05F1/247—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using bucking or boosting transformers as final control devices with motor in control circuit
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices
    • G05F1/147—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices with motor driven tap switch
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
    • H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings

Definitions

  • the invention relates to a voltage regulator for regulating the output voltage of at least one transformer with a step holder.
  • the object of the invention is to create a new voltage regulator for step holders of transformers, which is more accurate, more reliable and can also be integrated into modern digital control systems.
  • the object is achieved by the invention.
  • a microprocessor operating as a digital tolerance band controller is provided, on the at least two A / D converters, one of which is connected to the secondary side of a voltage converter and the other to the secondary side of a current converter.
  • Interfaces preferably relay drivers as output interfaces and optocouplers as input interfaces, an alphanumeric display, preferably an LCD display, a main switch and setting elements with which changeable parameters can be called up, set and stored, are connected, and the microprocessor on the one hand the Phase shift of the secondary signals of the current and voltage transformers is detected and the ⁇ o ⁇ (f> is determined therefrom and, on the other hand, the frequency, the active power, the apparent power and the reactive current are calculated from the processed or digitized secondary signals, and that if the transformer voltage deviates from the set tolerance band to the preselected voltage setpoint, a delay stage in the microprocessor responds and after the delay time has elapsed, provided the actual voltage value is still outside the tolerance band, the step holder of the transformer is adjusted accordingly. This ensures that the step holder is only adjusted If the actual voltage value exceeds a tolerance range for a longer period of time, the operation of the voltage regulator is very convenient due to the small number of clear buttons and the LCD display.
  • Voltage is detected by the microprocessor, preferably always three times in succession, at constant time intervals. Wrong measurements are avoided after each cycle time.
  • the delay stage is a counter with an adjustable maximum value which, after reaching this maximum value, emits a signal which accordingly controls the relay for the motor drive of the tap changer of the transformer via a relay driver.
  • the delay time decreases inversely proportional to the size of the exceeding or falling short of the limits of the tolerance band by the actual voltage value, the set delay time occurring only when the deviation from The voltage setpoint corresponds exactly to the tolerance band. This means that the controller intervenes depending on the size of the setpoint / actual value difference.
  • Another advantage is that a serial interface and / or an interface for an external display is connected to the microprocessor.
  • a display in a central control room can be connected via this interface.
  • the current position of the tap changer of the transformer can always be shown in the display. This is the standard display on the display of the voltage regulator. A change to other values, such as B. the current or the voltage can be done with the adjusting elements.
  • Step holder position compared with the step switch division determined internally in the microprocessor.
  • the plausibility check can be carried out in a simple manner, which increases the safety of the operation of the controller.
  • the signaling contacts are connected to a battery. This is necessary for the safe transmission of the signals from the signaling contacts.
  • FIG. 1 shows the voltage regulator as a block diagram
  • FIG. 2 shows a voltage-time diagram when two delay stages are activated
  • FIG. 3 shows a voltage-time diagram when only one delay stage is activated
  • the flowchart in FIG. 4 shows the program sequence in the case of a setpoint / actual value difference.
  • a microprocessor 1 operating as a digital tolerance band controller, to which at least two A / D converters 2 are connected, one of which is connected to the secondary side of a voltage converter 7 and the other is connected to the secondary side a current transformer 8 is connected. Furthermore, interfaces are also connected to the microprocessor 1, relay drivers 5 being provided as output interfaces and optocouplers 6 being provided as input interfaces.
  • An alphanumeric display 3, e.g. B. an LCD display, a main switch 11 and four buttons 4, with which changeable parameters can be called up, set and stored, are also connected to the microprocessor 1.
  • the microprocessor 1 detects on the one hand the phase shift of the secondary signals of the current 8 and voltage converter 7 via the comparators 12, 13 and determines the cos ⁇ .
  • the microprocessor calculates the frequency, the active power, the apparent power and the reactive current from the processed or digitized secondary signals of the voltage 7 and current transformers 8. If the transformer voltage deviates from the set tolerance band to the preselected voltage setpoint üsoii, a delay stage in the microprocessor 1 responds. After the delay time has elapsed, provided that the actual voltage Ui ⁇ is still outside the tolerance band, the tap changer of the transformer is adjusted accordingly. This is done by switching on the motor drive 10 via a signal from the microprocessor 1.
  • the values for the current, the voltage and the phase shift between current and voltage are each obtained after constant time intervals by the microprocessor 1, for example. B. always three times in a row.
  • the delay stage is a counter in the microprocessor 1 with an adjustable maximum value which, after reaching this maximum value, emits a signal which correspondingly controls the relay 14 or 15 for the motor drive 10 of the step holder of the transformer via the relay driver 5.
  • a serial interface 9 and / or an interface for an external display 10 is also connected to the microprocessor 1.
  • Outputs 16, 17, 18, 19, 20, 21 are also provided for system messages. One emits a signal in the event of an overcurrent, one in the event of an overvoltage and one in the event of an undervoltage. One of these outputs is used to signal the maximum and one for the minimum tap changer position and one for system fault reporting.
  • the signaling contacts 22, 23, 24 are used to check the plausibility of the tap changer position 25 are supplied.
  • a plausibility check of the motor drive 10 can be carried out with the signaling contacts 26, 27, 28.
  • Tl is the delay time of the one delay stage and T2 that of the second and Mt is the step actuator running time. It can be seen from both figures that if the tolerance band is exceeded, the delay time Tl is shorter than if the tolerance is exceeded. 2, T2 is chosen to be greater than 0, T2 only occurring if the control deviation is greater than two stages.
  • the step holder no longer operates, and after a delay time, a relay is activated which prevents attempts to hold the step switch and remains activated until the voltage lower limit is exceeded again.
  • the program sequence is controlled by a watchdog K.
  • A is a ' "restart" and B, initialization is carried out. Only after checking the measured input variables at C, the required values are calculated in D. Then it is determined in E whether the step holder is operated or not. After the delay time has elapsed, a switching action F is carried out. G checks the exchange of information and I checks the input keys and the display. Blocks H and I each mean service of the previously checked hardware.

Abstract

L'invention a pour objet un régulateur de tension destiné au réglage de la tension de sortie d'un transformateur comportant un commutateur à plots. L'invention est caractérisée en ce qu'il est prévu un microprocesseur (1) fonctionnant comme régulateur de bande de tolérance numérique, auquel sont raccordés au moins deux convertisseurs A/D (2) - dont le premier est de préférence relié au secondaire d'un transformateur de tension (7) et le deuxième, au secondaire d'un transformteur d'intensité (8) -, des interfaces (9) comportant de préférence des excitateurs à relais (5) comme interfaces de sortie, et des coupleurs opto-électroniques (11) comme interfaces d'entrée, un affichage alphanumérique, de préférence un affichage LCD, un interrupteur principal et des organes de réglage (4) au moyen desquels des paramètres variables sont adressables, réglables et mémorisables, et en ce que le microprocesseur, d'une part, détecte le déphasage des signaux secondaires des transformateurs d'intensité (8) et de tension (7) et détermine le cos ζ et, d'autre part, calcule, à partir des signaux secondaires traités ou numérisés, la fréquence, la puissance effective, la pussance apparente et le courant déwatté, et en ce que, lors d'un écart de la tension du transformateur par rapport à une bande de tolérance pré-établie, pour une valuer nominale de tension pré-sélectionnée, un étage temporisé se déclenche dans le microprocesseur (1) et, le temps de retard étant écoulé, et dans la mesure où la valeur effective de tension se situe encore en dehors de la bande de tolérance, le commutateur à plots du transformateur est ajusté en conséquence.
PCT/AT1991/000118 1990-11-19 1991-11-15 Regulateur de tension WO1992009024A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT234090 1990-11-19
ATA2340/90 1990-11-19

Publications (1)

Publication Number Publication Date
WO1992009024A1 true WO1992009024A1 (fr) 1992-05-29

Family

ID=3532538

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1991/000118 WO1992009024A1 (fr) 1990-11-19 1991-11-15 Regulateur de tension

Country Status (2)

Country Link
EP (1) EP0558532A1 (fr)
WO (1) WO1992009024A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001809A1 (fr) * 1995-06-29 1997-01-16 Siemens Energy & Automation, Inc. Detection de courant de charge continu pour une position predeterminee d'un commutateur de prises
WO1997001808A1 (fr) * 1995-06-29 1997-01-16 Siemens Energy & Automation, Inc. Systeme de controle d'un ajusteur de tension en fonction de la tension de la charge
EP0764296A1 (fr) * 1994-04-06 1997-03-26 Utility Systems Technologies, Inc. Commutateurs en charge
WO2002065630A1 (fr) * 2001-02-13 2002-08-22 Energy Saving 2000 S.A. Systeme de commande de charges electriques, plus particulierement d'unites d'eclairage
KR100387291B1 (ko) * 2001-08-17 2003-06-18 엘지전자 주식회사 외부적으로 리셋 가능한 모니터
CN100342293C (zh) * 2002-08-30 2007-10-10 沈阳新松机器人自动化股份有限公司 一种模拟式交流恒流源
DE102016002076A1 (de) * 2016-02-23 2017-08-24 Senvion Gmbh Eigenbedarfsregelung einer Windenergieanlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209737A1 (de) * 1982-03-17 1983-09-29 "Reo" Boris von Wolff GmbH & Cie Zweigniederlassung Solingen, 5650 Solingen Regelschaltung fuer spannungsstabilisatoren
DE3236208A1 (de) * 1982-09-30 1984-04-12 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Elektronische steuerung fuer pressmuellfahrzeuge
EP0129839A1 (fr) * 1983-06-24 1985-01-02 Regulation Technology, Inc. Transformateur réglable et système de régulation de tension
US4623834A (en) * 1984-07-06 1986-11-18 Oneac Corporation Dual programmable response time constants for electronic tap switching line regulators

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209737A1 (de) * 1982-03-17 1983-09-29 "Reo" Boris von Wolff GmbH & Cie Zweigniederlassung Solingen, 5650 Solingen Regelschaltung fuer spannungsstabilisatoren
DE3236208A1 (de) * 1982-09-30 1984-04-12 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Elektronische steuerung fuer pressmuellfahrzeuge
EP0129839A1 (fr) * 1983-06-24 1985-01-02 Regulation Technology, Inc. Transformateur réglable et système de régulation de tension
US4623834A (en) * 1984-07-06 1986-11-18 Oneac Corporation Dual programmable response time constants for electronic tap switching line regulators

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Siemens Review, Volume 45, No. 11, November 1978, Erlangen de pages 514-515; HELMUT LEIBOLD, HERBERT LUCKE: "6GC16 Voltage Controller with RMS-Value Measuring Feature for Tap-Changing Transformers" see the whole document. *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764296A1 (fr) * 1994-04-06 1997-03-26 Utility Systems Technologies, Inc. Commutateurs en charge
EP0764296A4 (fr) * 1994-04-06 1998-06-17 Utility Systems Technologies I Commutateurs en charge
WO1997001809A1 (fr) * 1995-06-29 1997-01-16 Siemens Energy & Automation, Inc. Detection de courant de charge continu pour une position predeterminee d'un commutateur de prises
WO1997001808A1 (fr) * 1995-06-29 1997-01-16 Siemens Energy & Automation, Inc. Systeme de controle d'un ajusteur de tension en fonction de la tension de la charge
AU700327B2 (en) * 1995-06-29 1998-12-24 Siemens Energy & Automation, Inc. Load voltage based tap changer monitoring system
WO2002065630A1 (fr) * 2001-02-13 2002-08-22 Energy Saving 2000 S.A. Systeme de commande de charges electriques, plus particulierement d'unites d'eclairage
KR100387291B1 (ko) * 2001-08-17 2003-06-18 엘지전자 주식회사 외부적으로 리셋 가능한 모니터
CN100342293C (zh) * 2002-08-30 2007-10-10 沈阳新松机器人自动化股份有限公司 一种模拟式交流恒流源
DE102016002076A1 (de) * 2016-02-23 2017-08-24 Senvion Gmbh Eigenbedarfsregelung einer Windenergieanlage
EP3211746A1 (fr) * 2016-02-23 2017-08-30 Senvion GmbH Régulation des besoins propres d'une éolienne

Also Published As

Publication number Publication date
EP0558532A1 (fr) 1993-09-08

Similar Documents

Publication Publication Date Title
EP0391143B1 (fr) Appareil de surveillance avec dispositif de commutation
DE2056208B2 (de) Regelvorrichtung fuer eine aus mindestens zwei getrennten einheiten bestehende heiz- und/oder kuehlanlage
CH663297A5 (de) Schaltungsanordnung fuer ein rechnergesteuertes schaltgeraet.
WO1992009024A1 (fr) Regulateur de tension
EP0050208A1 (fr) Dispositif pour introduire des valeurs d'ajustage dans des circuits électroniques
DE1908606B2 (de) Stellantrieb
DE2405908B1 (de) Ansteuerschaltung fuer ein Hauptschuetz
DE2359756A1 (de) Saettigungswandler
DE2543370C3 (de) Vorrichtung zur stufenlosen Steuerung elektrischer Verbraucher nach dem Phasenanschnittprinzip insbesondere Helligkeitsregler
DE3332697C2 (fr)
DE726679C (de) Schwachstromgesteuerte Stufenschalteinrichtung fuer Starkstrom
DE2460838A1 (de) Elektronischer hoechstlastwaechter
DE4007826C2 (fr)
DE975388C (de) Einrichtung zur Regelung von Wechselspannungen
DE3232241C1 (de) Schaltungsanordnung für einen durch schaltbare Anlaßwiderstände anlaufgesteuerten Asynchronmotor zum Antrieb einer blockiergefährdeten Arbeitsmaschine
DE665184C (de) Einrichtung zur Regelung der Frequenz und Lastverteilung in elektrischen Anlagen mit mehreren parallel arbeitenden Synchrongeneratoren
DE2734844C3 (de) Einrichtung zur gesicherten Versorgung von Verbrauchern mit konstanter Wechselspannung
DE311247C (fr)
DE4102354C1 (en) Automatically controlling three winding control transformer - supplying regulator for stepped switch with stipulated voltages of two windings and actual valve of one
DE1171984B (de) Verfahren zur Blindleistungsregelung einer elektrischen Anlage
EP4248474A1 (fr) Dispositif adaptateur
WO1993017480A1 (fr) Dispositif de reglage de tension pour le fonctionnement en parallele de transformateurs
DE2135838C3 (de) Fernverstellbarer Endschalter
EP0508177A2 (fr) Relais de protection digital
DE1563619C (de) Schaltungsanordnung fur die Spannungs regelung von aus einem Generator gespeis ten Zugbeleuchtungsanlagen

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BG CS HU JP PL SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1991919708

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1991919708

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1991919708

Country of ref document: EP