EP0053413B1 - Dispositif pour la commande continue de l'angle de phase dans des installations de transmission d'énergie électrique - Google Patents

Dispositif pour la commande continue de l'angle de phase dans des installations de transmission d'énergie électrique Download PDF

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Publication number
EP0053413B1
EP0053413B1 EP19810201254 EP81201254A EP0053413B1 EP 0053413 B1 EP0053413 B1 EP 0053413B1 EP 19810201254 EP19810201254 EP 19810201254 EP 81201254 A EP81201254 A EP 81201254A EP 0053413 B1 EP0053413 B1 EP 0053413B1
Authority
EP
European Patent Office
Prior art keywords
transformer
phase
phase angle
voltage
energy transmission
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
EP19810201254
Other languages
German (de)
English (en)
Other versions
EP0053413A1 (fr
Inventor
Josip Dipl.-Ing. Dobsa
Peter Eglin
Gerhard Dipl.-Ing. Güth
Jiri Dr. Ing. Mastner
Herbert Dr. Dipl.-Ing. Stemmler
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
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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
Publication of EP0053413A1 publication Critical patent/EP0053413A1/fr
Application granted granted Critical
Publication of EP0053413B1 publication Critical patent/EP0053413B1/fr
Expired legal-status Critical Current

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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
    • G05F1/26—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 combined with discharge tubes or semiconductor devices
    • G05F1/30—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 combined with discharge tubes or semiconductor devices semiconductor devices only
    • 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
    • G05F1/16—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 combined with discharge tubes or semiconductor devices
    • G05F1/20—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 combined with discharge tubes or semiconductor devices semiconductor devices only

Definitions

  • the present invention relates to a device for the continuous control of the phase angle in electrical energy transmission devices according to the preamble of claim 1.
  • the aim should be that the phase angles of the interconnected AC voltages match. This reduces undesirable effects on the generators. This endeavor is made more difficult because the phase angle of a voltage fed into a transmission line is rotated along this line and by the load at the end of the line, provided this is not a purely ohmic resistance.
  • transverse transformers are therefore used to adjust the phase angle of the voltage in the various network parts.
  • the transverse transformer induces in each conductor of the line a transverse voltage superimposed on the input voltage, the phase angle of which is offset by 90 ° with respect to that of the input voltage, so that an output voltage arises whose phase angle is shifted with respect to that of the input voltage.
  • phase shifter with at least two reactive impedances connected in series is known (DE-A 2 853 358).
  • a tap is provided between the impedances and at least one electrically controlled current switch, preferably a bidirectional thyristor, in series with this.
  • This phase shifter enables the phase angle of the tapped voltage to be rotated in small steps in both possible directions.
  • the rotation of the phase angle is generated by the reactive power in the reactive impedances, which is why the amount of this rotation determines the required nominal power of the impedances.
  • the nominal power for a rotation of 60 ° reaches about a quarter of the throughput.
  • the described phase shifter can therefore only be used for energy transmission lines to a limited extent, despite its technical advantages.
  • the invention solves the problem of creating a device with which the phase angle in an electrical energy transmission device can be shifted over a large angular range. This shift should be low-loss and should not be caused by reactive power.
  • phase angles can be set in a simple manner.
  • the embodiment according to claim 3 is particularly economical.
  • the input voltage of a high-voltage line is denoted by U.
  • the phase angle of this input voltage U has a phase angle ( p , which can be leading (capacitive load) or lagging (inductive load) due to various loads applied to the high-voltage line.
  • the high-voltage line HL is symbolized with its input voltage U and its output voltage U '.
  • the voltages U and U ' relate to the secondary side of an additional transformer ZT.
  • the voltage source 1 is formed from an additional voltage source 3, a downstream rectifier circuit 2 and a self-commutated inverter or power electronics LE.
  • a measurement / control signal S is fed to the power electronics.
  • the mode of operation of this circuit arrangement is based on the fact that an additional voltage UZ is added inductively, via the additional transformer ZT, to the input voltage U, which results in the output voltage U '.
  • an additional voltage UZ is added inductively, via the additional transformer ZT, to the input voltage U, which results in the output voltage U '.
  • a constant alternating voltage UK shifted by a fixed phase angle with respect to the voltage U, and a variable alternating voltage UV connected in series are connected via an excitation transformer ET.
  • the AC voltage UV is varied in its phase position and in its amplitude by the measurement / control signal S.
  • the circuit arrangement according to FIG. 3 in turn has an excitation transformer ET, to which an input voltage UK o is applied on the primary side.
  • the output voltage UK at the transformer ET is led to a bridge circuit with thyristors 4-7 'connected in anti-parallel.
  • This bridge circuit commutates an additional current IZ formed therein, which flows through the primary winding of an additional transformer ZT.
  • the current I of a high-voltage line HL which has an input voltage U, flows through the secondary winding of the additional transformer ZT.
  • the inductive addition of the additional voltage UZ sets the high-voltage line HL to a voltage U 'which is compensated for in phase and amplitude.
  • the transformer ZT is wound in opposite directions, which, as in the following drawings, is symbolized by points on the primary and secondary windings.
  • the thyristors 4-7 'each have their own quenching circuit known per se and allow the additional voltage UZ to be set continuously for any phase angle between the output voltage UK of the transformer ET and the additional current IZ.
  • thyristors 4, 4 'connected in anti-parallel can be provided with their own quenching circuit, while the other thyristors 5-7' quench at the zero crossing of the current.
  • the quenching device can be dispensed with in all thyristors; the power is transferred through natural commutation.
  • a high-voltage line HL has the phases R, S, T.
  • An excitation transformer ET is connected in a triangle between these phases, so that the voltage pointers can be added in the transverse direction.
  • the compensated phases are labeled R ', S', T '.
  • phase currents IR, IS, IT are determined by ammeters 8-10 and the voltages UST and URS are determined by voltmeters 11 and 12 connected between the phases.
  • the resulting signals S1 (IR, IS, IT) and S2 (UST, URS) control a previously described power electronics LE with thyristor bridge circuits.
  • the power electronics shown for the voltage UER, are connected to a step winding on the secondary side of the excitation transformer ET.
  • An additional voltage UZR and an additional current IZ are set at the output of the power electronics LE, which, as described above, also achieve a compensated phase voltage here by inductive addition in the additional transformer ZT.
  • the remaining phases are compensated in the same way.
  • the secondary gradation of the winding in the excitation transformer ET allows the required control or regulation stroke in the power electronics LE to be reduced by suitable interconnection.
  • the circuit arrangement according to FIG. 5 shows an excitation transformer ET which has a secondary winding (Vernier Winding) graded on a secondary side according to a power series (3 ").
  • the bridge circuits 14-16 in turn have anti-parallel connected thyristors and are fed by the voltages UK1-UK3.
  • the required control area in the thyristor bridge circuit 13 with quenching circuits, fed by the alternating voltage UV, can be kept very small. This enables a very inexpensive solution; the additional voltage UZ or the additional current IZ can be optimally adapted to the operating conditions of energy transmission devices.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Ac-Ac Conversion (AREA)
  • Control Of Electrical Variables (AREA)

Claims (4)

1. Dispositif pour la commande continue de l'angle de phase dans des installations de transmission d'énergie électrique,
a) avec un dispositif réglable de couplage à soupape pour la commande continue de cet angle de phase, caractérisé en ce que
b) la ligne de transmission d'énergie (HL) dans laquelle l'angle de phase doit être modifié traverse l'enroulement secondaire d'un transformateur auxiliaire (ZT);
c) le côté primaire de ce transformateur auxiliaire est en relation active avec la sortie d'un transformateur d'excitation (ET) par l'intermédiaire d'un dispositif de commande des phases (1,4,4' ... 7, 7'; 13 ... 16) pour le réglage continu de l'angle de phase entre la tension de sortie (UK) de ce transformateur d'excitation et le courant ou le courant auxiliaire (IZ) appliqué à l'enroulement primaire du transformateur auxiliaire (ZT);
d) que l'installation de commande des phases comporte un circuit de pont avec des thyristors (4, 4' ... 7, 7') montés en antiparallèle;
e) et en ce que les thyristors sont commandés par un signal de mesure/commande (S) déterminant l'amplitude et la phase de la tension auxiliaire (UZ) appliqué au côté primaire du transformateur auxiliaire (ZT).
2. Dispositif suivant la revendication 1, caractérisé en ce que le dispositif de commande des phases est un onduleur à conduite automatique, qui est alimenté par une source de tension auxiliaire (3) par l'intermédiaire d'un circuit redresseur (2) (fig. 2).
3. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de commande des phases est alimenté.par un des multiples enroulements secondaires du transformateur d'excitation.
4. Dispositif suivant la revendication 3, caractérisé en ce que l'enroulement secondaire du transformateur d'excitation (ET) est étagé suivant une série de puissances (fig. 5).
EP19810201254 1980-12-03 1981-11-10 Dispositif pour la commande continue de l'angle de phase dans des installations de transmission d'énergie électrique Expired EP0053413B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH8931/80 1980-12-03
CH893180 1980-12-03

Publications (2)

Publication Number Publication Date
EP0053413A1 EP0053413A1 (fr) 1982-06-09
EP0053413B1 true EP0053413B1 (fr) 1984-10-24

Family

ID=4346438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810201254 Expired EP0053413B1 (fr) 1980-12-03 1981-11-10 Dispositif pour la commande continue de l'angle de phase dans des installations de transmission d'énergie électrique

Country Status (3)

Country Link
EP (1) EP0053413B1 (fr)
CA (1) CA1181806A (fr)
DE (1) DE3166863D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3029034A1 (fr) * 2014-11-24 2016-05-27 Thales Sa Dispositif de conversion d'energie electrique a caracteristiques ameliorees

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152002B1 (fr) * 1984-02-10 1988-11-17 BBC Brown Boveri AG Déphaseur
DE4135059A1 (de) * 1991-10-24 1993-04-29 Asea Brown Boveri Vorrichtung zur kontinuierlichen spannungssteuerung
US5469044A (en) † 1995-01-05 1995-11-21 Westinghouse Electric Corporation Transmission line power flow controller with unequal advancement and retardation of transmission angle
AT409691B (de) * 1997-11-11 2002-10-25 Croce Wolfgang Schaltung zur reduktion der verluste beim umformen, schalten oder steuern elektrischer leistung
BRPI0802444A8 (pt) 2008-07-15 2017-02-21 Siemens Ltda Sistema para regulação de tensão de carga em circuitos de distribuição de energia e método para regulação de tensão de carga em circuitos de distribuição de energia
DE102010015276A1 (de) * 2010-04-15 2011-10-20 A. Eberle Gmbh & Co. Kg Steuerung/Regelung der Sekundärspannung von Ortsnetztransformatoren durch den Einsatz von netzgeführten Wechselrichtern

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444457A (en) * 1967-03-23 1969-05-13 Westinghouse Electric Corp Voltage regulator system utilizing a center-tapped inductor
FR2155839B1 (fr) * 1971-10-08 1975-04-18 Alsthom Cgee
DE2609697C2 (de) * 1976-03-05 1978-04-13 Nieke Elektroapparate Kg, 1000 Berlin Stelltransformator mit elektronischer Steuerung
DE2730010C2 (de) * 1977-07-02 1985-05-30 Brown, Boveri & Cie Ag, 6800 Mannheim Schaltungsanordnung zur Erzeugung nach Größe und Kurvenform schnell veränderbarer Blindströme
DE2902514C2 (de) * 1979-01-23 1982-12-16 Siemens AG, 1000 Berlin und 8000 München Anordnung zur Konstanthaltung der Spannung in einem ein- oder mehrphasigen Netz

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3029034A1 (fr) * 2014-11-24 2016-05-27 Thales Sa Dispositif de conversion d'energie electrique a caracteristiques ameliorees
WO2016083411A1 (fr) * 2014-11-24 2016-06-02 Thales Dispositif de conversion d'energie electrique a caracteristiques ameliorees

Also Published As

Publication number Publication date
CA1181806A (fr) 1985-01-29
EP0053413A1 (fr) 1982-06-09
DE3166863D1 (en) 1984-11-29

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