EP0823715B1 - Transformateur triphasé - Google Patents

Transformateur triphasé Download PDF

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Publication number
EP0823715B1
EP0823715B1 EP97810496A EP97810496A EP0823715B1 EP 0823715 B1 EP0823715 B1 EP 0823715B1 EP 97810496 A EP97810496 A EP 97810496A EP 97810496 A EP97810496 A EP 97810496A EP 0823715 B1 EP0823715 B1 EP 0823715B1
Authority
EP
European Patent Office
Prior art keywords
phase
winding
windings
regulation
transformer
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
EP97810496A
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German (de)
English (en)
Other versions
EP0823715A3 (fr
EP0823715A2 (fr
Inventor
Jean François Ravot
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.)
ABB Secheron SA
Original Assignee
ABB Secheron SA
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Filing date
Publication date
Application filed by ABB Secheron SA filed Critical ABB Secheron SA
Publication of EP0823715A2 publication Critical patent/EP0823715A2/fr
Publication of EP0823715A3 publication Critical patent/EP0823715A3/fr
Application granted granted Critical
Publication of EP0823715B1 publication Critical patent/EP0823715B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers

Definitions

  • the present invention relates to electrical energy conversion using three-phase transformers in electrical networks. It affects you Three-phase transformer, as described in the preamble of the first claim is.
  • an additional voltage U z in a network branch can influence both the active power distribution and the reactive power distribution in the desired manner within the network.
  • the additional voltage U z has a so-called longitudinal component which is in phase with the mains voltage and a transverse component which is 90 ° out of phase with the mains voltage.
  • a change in the longitudinal component influences the reactive power distribution in the network and the variation of the transverse component controls the active power flow.
  • An additional voltage U z acting according to the above principle is usually realized in three-phase networks by means of three-phase autotransformers, as described, for example, in "Electrical Machines” by Bödefeld / Sequence, Springer Verlag 1971, on pages 86ff.
  • a normal star autotransformer with various voltage taps is used to control the series component, which is referred to below as the series regulating transformer.
  • the transverse components are usually controlled using a triangular autotransformer, also known as a series transformer, a so-called transverse regulating transformer. Accordingly, for a combined series and transverse control in a network branch, a main transformer with a series control transformer and a series control transformer are connected in series.
  • the main transformer is used to couple the high-voltage network and the undervoltage network, and the series-connected series and series regulating transformers allow control to be used with lower losses and thus more economically, in parallel. Disadvantages of the series connection described, however, are the high production costs for the additional regulating transformers and their extensive space requirement. In addition, series and transverse regulating transformers are also lossy and, in particular, have copper and iron loss.
  • the invention has for its object a three-phase transformer of the beginning mentioned kind to develop in such a way that it is a simpler and cost-effective longitudinal and lateral control for a suitable load distribution in allows an electrical network, the for the longitudinal and lateral control required space is reduced, and compared to the prior art Reduction of the power loss should be achieved.
  • the essence of the invention is that within a three-phase transformer housing both the required energy transfer between two galvanically separate networks is made as well as a desired longitudinal and Cross regulation for reactive and active power distribution in an energy network is made. For this purpose it becomes a primary or a secondary Phase voltage a gradually adjustable longitudinal voltage, and each a stepwise adjustable transverse voltage of the two neighboring phases added.
  • the advantages of the invention can be seen, inter alia, in that the otherwise in order to regulate reactive and active power distribution separately in a row Main transformer switched series and cross-regulating transformers only can be reduced to a few additional windings in the main transformer. By this measure reduces both construction costs and operating costs. At this point, the savings in construction costs include the expensive ones Transformer cores, the winding copper and the necessary space for the additional ones Transformers. Operating cost savings are mainly due to the lower iron and copper losses.
  • E denotes the iron core of a three-phase transformer of the core transformer type.
  • This three-phase transformer has three primary windings U PW , V PW and W PW with the three phase voltages U p , V p and W p and furthermore the transformer has three secondary windings U SW , V SW and W SW with the three phase voltages U s , V s and W s on.
  • a longitudinal control winding U L , V L and W L and two transverse control windings are also arranged on each iron core leg per phase U, V, W, namely U Q1 , U Q2 in phase U, V Q1 , V Q2 in phase V and W Q1 , W Q2 in phase W.
  • series and transverse control transformers are used for the targeted reactive and active power distribution in an energy distribution network.
  • this reactive and active power distribution is achieved by suitable electrical connections of the series control windings U L , V L and W L and the cross control windings, U Q1 , U Q2 , V Q1 , V Q2 , W Q1 , W Q2 with the primary and secondary windings U PW , V PW , W PW , U SW , V SW and W SW reached.
  • the necessary control methods for reactive and active power distribution are sufficiently known in connection with the use of conventional series and transverse control transformers, so that these control methods are not explained in detail below.
  • the invention relates primarily to an electrical circuit to which conventional control methods can be used.
  • the secondary winding U SW of the phase U is connected via a step switch 1 to a longitudinal control winding U L which is in the same phase and consists of a number of partial windings.
  • the two secondary windings V SW and W SW of the adjacent phases V and W are electrically connected to the series control windings V L and W L via the tap changer 1 in accordance with the installation in phase U.
  • the installed tap changer 1 is thus equipped in all three phases U, V, W with corresponding tap contacts for controlling the respective partial windings of the series regulating windings UL, VL and WL, which permits a gradual variation of the corresponding phase voltages U s , V s and W s within limits .
  • a regulated change in the position of the tap changer 1 occurs in an energy distribution network with several three-phase transformers operated in parallel to reduce the reactive current exchange and the associated losses used.
  • the primary winding Upw of phase U is connected in series with the transverse control windings V Q1 and W Q2 .
  • the voltages applied to the transverse control windings V Q1 and W Q2 are tapped via a step switch 2 on corresponding partial windings of the transverse control windings, the magnitudes of the voltages being the same, namely n * V p and n * W p , and variable in stages between n in pu.
  • phase angles of the voltages present at V Q1 and W Q2 are both leading or lagging with respect to the phase voltage U p according to the circuit diagram and position of the tap changer 2. This is because, for example, the voltage at V Q1 is tapped in phase with the phase voltage V p for a selected tap changer position, while the added voltage at W Q2 is in phase opposition to the phase voltage W p .
  • U p based on U p, only the combinations of 60 ° leading voltage at V Q1 with 120 ° leading voltage at W Q2 occur, or 60 ° following voltage at W Q2 with 120 ° leading voltage at V Q1 , and that the resulting voltage then results in U p + n * (V p -W p ).
  • transverse voltage which is perpendicular to U p and which, according to a suitable regulation, is either 90 ° leading or 90 ° lagging due to the same amount and the choice of phase angle shown.
  • This transverse voltage is added to the phase voltage U p , as a result of which the resulting voltage differs in magnitude and phase from U p .
  • This phase shift leads to a preferred active power distribution and to reduced losses.
  • V PW is connected to the transverse control windings W Q1 and U Q2
  • W PW is connected to U Q1 and V Q2
  • the resulting voltages result in V p + n * (W p -U p ) and W p + n * (U p -V p ).
  • All voltage taps on the transverse regulating windings U Q1 , U Q2 , V Q1 , V Q2 , W Q1 , W Q2 are operated via the one tap changer 2 and are of the same magnitude, namely n * U p , n * V p and n * W p .
  • the longitudinal control is carried out here on the primary side of the three-phase transformer and the transverse control on the secondary side.
  • the primary winding U PW is connected via the step switch 1 to the series control winding U L and the secondary winding U SW via the step switch 2 to the transverse control windings V Q1 and W Q2 of the adjacent phases. Cyclic rotation results in the connections of the other two phases.
  • the series control winding V L is connected to the primary winding V PW via the tap changer 1, the tap changer 2 connects the secondary winding V SW to the cross-regulation windings W Q1 and W Q2 .
  • phase W the series control winding U L is connected to the primary winding W PW via the tap changer 1, and the secondary winding U SW is connected to the cross regulation windings U Q1 and U Q2 .
  • the principle of operation of this alternative solution is the same as that of the first solution shown in FIG. 1.
  • circuit arrangement according to the invention undoubtedly also in other types of transformers, such as a five-leg transformer or jacket transformer conceivable, but of course also others Winding arrangements such as the star-star circuits shown in the exemplary embodiments possible are.
  • Winding arrangements such as the star-star circuits shown in the exemplary embodiments possible are.
  • concentric arrangement of all individual windings their location is neither imperative nor is radial distribution prescribed on one leg of the iron frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Inverter Devices (AREA)
  • Protection Of Transformers (AREA)
  • Ac-Ac Conversion (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Windings For Motors And Generators (AREA)
  • Coils Of Transformers For General Uses (AREA)

Claims (2)

  1. Transformateur triphasé présentant pour chaque phase (U, V, W), au moins un bobinage (UPW, VPW, WPW) du côté primaire et au moins un bobinage (USW, VSW, WSW) du côté secondaire disposés sur une colonne d'un noyau en fer (E), le transformateur triphasé destiné à être mis en oeuvre dans un réseau de transmission d'énergie étant pourvu d'une régulation longitudinale et d'une régulation transversale pour obtenir une répartition adéquate de la puissance réactive et de la puissance active, au moins un bobinage de régulation longitudinal (UL, VL, WL) et au moins un bobinage de régulation transversal (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) étant en liaison dans chaque phase (U, V, W) avec le bobinage (UPW, VPW, WPW) du côté primaire et/ou avec le bobinage (USW, VSW, WSW) du côté secondaire,
    caractérisé en ce que pour chaque phase (U, V, W), un bobinage de régulation longitudinal (UL, VL, WL) au moins est relié électriquement au bobinage secondaire (USW, VSW, WSW) disposé sur la même colonne de la phase
    (U,V,W), et au moins un bobinage de régulation transversal (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) de chaqueune des deux phases voisines (U, V, W) est relié électriquement au bobinage du côté primaire (UPW, VPW, WPW),
    ou en ce que pour chaque phase (U, V, W), un bobinage de régulation longitudinal (UL, VL, WL) au moins est relié électriquement au bobinage primaire (UPW, VPW, WPW) disposé sur la même colonne de la phase (U, V, W), et selon le cas un bobinage de régulation transversal (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) au moins des deux phases voisines (U, V, W) est relié électriquement au bobinage (USW, VSW, WSW) du côté secondaire.
  2. Transformateur triphasé selon la revendication 1,
    caractérisé en ce que le bobinage de régulation longitudinal (UL, VL, WL) et les bobinages de régulation transversaux (UQ1, VQ1, WQ1, UQ2, VQ2, WQ2) sont constitués de bobinages partiels.
EP97810496A 1996-08-09 1997-07-16 Transformateur triphasé Expired - Lifetime EP0823715B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19632172A DE19632172A1 (de) 1996-08-09 1996-08-09 Drehstromtransformator
DE19632172 1996-08-09

Publications (3)

Publication Number Publication Date
EP0823715A2 EP0823715A2 (fr) 1998-02-11
EP0823715A3 EP0823715A3 (fr) 1998-04-29
EP0823715B1 true EP0823715B1 (fr) 2001-01-17

Family

ID=7802227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810496A Expired - Lifetime EP0823715B1 (fr) 1996-08-09 1997-07-16 Transformateur triphasé

Country Status (4)

Country Link
EP (1) EP0823715B1 (fr)
AT (1) ATE198808T1 (fr)
DE (2) DE19632172A1 (fr)
ES (1) ES2154889T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933811A1 (de) * 1999-07-20 2001-02-01 Abb Research Ltd Drehstromtransformator für Mittel- und Hochspannungen mit einer Anordnung zur Spannungsregelung
NO330773B1 (no) * 2009-12-18 2011-07-11 Vetco Gray Scandinavia As Transformator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1763020B1 (de) * 1968-03-23 1971-08-26 Reinhausen Maschf Scheubeck Schaltanordnung zur Laengs- und Querspannungsregelung eines dreiphasigen Stufentransformators
DE2034638A1 (de) * 1970-07-13 1972-01-20 Transformatorenwerk August Lep Anordnung einer Stufenregelwicklung für 90 Grad - Querregulierung bei Stern- und Offenschaltung in Drehstromtransformatoren
DE2933685A1 (de) * 1979-07-25 1981-02-12 Bbc Brown Boveri & Cie Transformator zum steuerbaren verschieben der phasenwinkel der ausgangsspannungen gegenueber den phasenwinkeln der eingangsspannungen
DE3047521C2 (de) * 1980-12-17 1985-06-27 Schorch GmbH, 4050 Mönchengladbach Dreiphasiger Netzkupplungstransformator
DE3936937A1 (de) * 1989-11-06 1991-05-08 Siemens Ag Wicklungsanordnung fuer giessharztransformatoren
EP0510474B1 (fr) * 1991-04-23 1995-11-22 Siemens Aktiengesellschaft Dispositif d'ajustage
JP2536813B2 (ja) * 1993-10-22 1996-09-25 光也 松村 三相単巻変圧器
US5557249A (en) * 1994-08-16 1996-09-17 Reynal; Thomas J. Load balancing transformer

Also Published As

Publication number Publication date
ES2154889T3 (es) 2001-04-16
ATE198808T1 (de) 2001-02-15
DE59702922D1 (de) 2001-02-22
EP0823715A3 (fr) 1998-04-29
DE19632172A1 (de) 1998-02-12
EP0823715A2 (fr) 1998-02-11

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