EP0053413A1 - 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
EP0053413A1
EP0053413A1 EP19810201254 EP81201254A EP0053413A1 EP 0053413 A1 EP0053413 A1 EP 0053413A1 EP 19810201254 EP19810201254 EP 19810201254 EP 81201254 A EP81201254 A EP 81201254A EP 0053413 A1 EP0053413 A1 EP 0053413A1
Authority
EP
European Patent Office
Prior art keywords
transformer
phase angle
voltage
phase
additional
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.)
Granted
Application number
EP19810201254
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German (de)
English (en)
Other versions
EP0053413B1 (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
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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
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Publication of EP0053413B1 publication Critical patent/EP0053413B1/fr
Expired legal-status Critical Current

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    • 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 method for continuously controlling the phase angle in electrical energy transmission devices and to a device for carrying it out.
  • the aim should be that the phase angles of the interconnected AC voltages match. This improves the transmission properties of the line and reduces repercussions 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 that it is not a pure resistor.
  • 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 o 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.
  • a controllable phase shifter with at least two reactive impedances connected in series is known (DE-OS 28 53 358).
  • a tap is provided between the impedances and in series with at least one electrically controlled current switch, preferably a bidirectional thyristor.
  • 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 600 reaches about a quarter of the throughput.
  • the described phase shifter can therefore only be used to a limited extent for energy transmission lines, despite its technical advantages, for economic reasons.
  • At least one continuously adjustable voltage source with an additional voltage with a selected phase angle is added inductively to the input voltage.
  • the device according to the invention has a continuously adjustable voltage source, which is connected to an additional voltage source via a rectifier circuit.
  • the embodiment according to claim 4 is particularly economical.
  • An embodiment according to claim 5 allows a reduction in the control engineering effort.
  • the input voltage of a high-voltage line is denoted by U.
  • the phase position of this input voltage U has a phase angle ⁇ that is leading (capacitive load) or lagging (inductive load) due to various loads applied to the high-voltage line.
  • the resulting output voltage is designated U '; Current and voltage are in a desired relationship to each other.
  • the high-voltage line HL is symbolized with its input voltage U and ih rer output voltage U 'shown.
  • the voltages U and U ' are measured on the secondary side of an additional transformer ZT.
  • the secondary winding of the additional transformer ZT carries an additional voltage UZ, which is generated on the one hand by an excitation transformer ET and on the other hand by a voltage source 1.
  • the voltage source 1 is formed from an additional voltage source 3, a downstream rectifier circuit 2 and 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 '.
  • a constant alternating voltage UK which is shifted by a fixed phase angle with respect to the voltage U, and a variable alternating voltage UV connected in series with it 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.
  • a self-guided inverter is used for this purpose, which is composed in a manner known per se from the additional voltage source 3, a rectifier circuit 2 and power electronics LE.
  • the circuit arrangement according to FIG. 3 in turn has an excitation transformer ET, on the primary side of which one Input voltage UK O is present.
  • 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 'that is compensated for in phase and amplitude.
  • the transformer ZT is wound in opposite directions, which is symbolized by points on the primary and secondary windings as in the following drawings.
  • 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.
  • only a single pair of anti-parallel connected thyristors 4,4 'with their own quenching circuit can be provided, while the other thyristors 5-7' quench in the zero crossing of the current.
  • the quenching devices 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. Between these phases, an excitation transformer ET is connected in a triangle, so that the voltage pointers are added in the transverse direction can follow.
  • 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 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 for the voltage UER, is connected to a step winding on the secondary side of the excitation transformer ET.
  • the power electronics LE there is an additional voltage UZR and an additional current IZ which, as described above, also achieve a compensated phase voltage UR '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 necessary 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 on its secondary side has a secondary winding (Vernier Winding) graded according to a power series (3 n ).
  • the bridge circuits 14-16 in turn have thyristors connected in anti-parallel and are fed by the voltages UK1-UK3.
  • the required control area in the thyristor bridge circuit 13 can be fed with quenching circuits keep the alternating voltage UV 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.
  • FIG. 6 A circuit arrangement for optionally adding voltages in the longitudinal, oblique and transverse directions is shown in FIG. 6.
  • the excitation transformer ET in turn has graduated secondary windings according to a power series. However, these are designed twice for each phase R, S, T and accordingly allow an optional interconnection in any pointer position in the subsequent power electronics LE.
  • the controlled variables of the phases are labeled x, y, z; the continuous regulation takes place in the aforementioned manner.
  • the pointer diagram in FIG. 7 illustrates the mode of operation of the circuit arrangement in FIG. 6.
  • the pointers and their compensation variables are shown in accordance with their phase designations and control variables.
  • the method according to the invention and the device its implementation is particularly economical because even with any phase position of the additional voltage, only a single additional transformer is switched on to the high-voltage line.

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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)
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 true EP0053413A1 (fr) 1982-06-09
EP0053413B1 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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152002A1 (fr) * 1984-02-10 1985-08-21 BBC Brown Boveri AG Déphaseur
DE4135059A1 (de) * 1991-10-24 1993-04-29 Asea Brown Boveri Vorrichtung zur kontinuierlichen spannungssteuerung
WO1999025061A1 (fr) * 1997-11-11 1999-05-20 Wolfgang Croce Circuit de transformation, de commutation, de reglage ou de commande d'une puissance electrique
WO2010006397A3 (fr) * 2008-07-15 2010-07-22 Siemens Ltda. Système et procédé de régulation d'une tension de charge dans des circuits de distribution d'énergie
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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469044A (en) † 1995-01-05 1995-11-21 Westinghouse Electric Corporation Transmission line power flow controller with unequal advancement and retardation of transmission angle
FR3029034B1 (fr) * 2014-11-24 2018-08-10 Thales Dispositif de conversion d'energie electrique a caracteristiques ameliorees

Citations (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
DE2248166A1 (de) * 1971-10-08 1973-04-12 Alsthom Cgee Regelbarer transformator
DE2609697B1 (de) * 1976-03-05 1977-08-18 Nieke Elektroapp Kg Stelltransformator mit elektronischer Steuerung
DE2730010A1 (de) * 1977-07-02 1979-01-18 Bbc Brown Boveri & Cie Schaltungsanordnung zur erzeugung nach groesse und kurvenform schnell veraenderbarer blindstroeme und steuer- und regeleinrichtung fuer dieselbe
DE2902514A1 (de) * 1979-01-23 1980-07-24 Siemens Ag Anordnung zur regelung der spannung in einem ein- oder mehrphasigen netz

Patent Citations (6)

* 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
DE2248166A1 (de) * 1971-10-08 1973-04-12 Alsthom Cgee Regelbarer transformator
FR2155839A1 (fr) * 1971-10-08 1973-05-25 Alsthom
DE2609697B1 (de) * 1976-03-05 1977-08-18 Nieke Elektroapp Kg Stelltransformator mit elektronischer Steuerung
DE2730010A1 (de) * 1977-07-02 1979-01-18 Bbc Brown Boveri & Cie Schaltungsanordnung zur erzeugung nach groesse und kurvenform schnell veraenderbarer blindstroeme und steuer- und regeleinrichtung fuer dieselbe
DE2902514A1 (de) * 1979-01-23 1980-07-24 Siemens Ag Anordnung zur regelung der spannung in einem ein- oder mehrphasigen netz

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152002A1 (fr) * 1984-02-10 1985-08-21 BBC Brown Boveri AG Déphaseur
DE4135059A1 (de) * 1991-10-24 1993-04-29 Asea Brown Boveri Vorrichtung zur kontinuierlichen spannungssteuerung
WO1999025061A1 (fr) * 1997-11-11 1999-05-20 Wolfgang Croce Circuit de transformation, de commutation, de reglage ou de commande d'une puissance electrique
US6300747B1 (en) 1997-11-11 2001-10-09 Wolfgang Croce Circuit having reduced losses occurring during transforming switching adjusting or controlling electric power
WO2010006397A3 (fr) * 2008-07-15 2010-07-22 Siemens Ltda. Système et procédé de régulation d'une tension de charge dans des circuits de distribution d'énergie
US8552701B2 (en) 2008-07-15 2013-10-08 Siemens Ltda System for regulating a load voltage in power distribution circuits and method for regulating a load voltage in power distribution circuits
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

Also Published As

Publication number Publication date
DE3166863D1 (en) 1984-11-29
CA1181806A (fr) 1985-01-29
EP0053413B1 (fr) 1984-10-24

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