EP3043362A1 - Transformateur de régulation de la tension - Google Patents

Transformateur de régulation de la tension Download PDF

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Publication number
EP3043362A1
EP3043362A1 EP15150285.3A EP15150285A EP3043362A1 EP 3043362 A1 EP3043362 A1 EP 3043362A1 EP 15150285 A EP15150285 A EP 15150285A EP 3043362 A1 EP3043362 A1 EP 3043362A1
Authority
EP
European Patent Office
Prior art keywords
group
voltage
coils
transformer
yoke
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.)
Withdrawn
Application number
EP15150285.3A
Other languages
German (de)
English (en)
Inventor
Irma Buschmann
Martin Carlen
Frank Cornelius
Jens Tepper
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 Schweiz AG
Original Assignee
ABB Technology AG
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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP15150285.3A priority Critical patent/EP3043362A1/fr
Publication of EP3043362A1 publication Critical patent/EP3043362A1/fr
Withdrawn legal-status Critical Current

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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 invention is related to a voltage-regulation-transformer, comprising a transformer core and a first group of three hollow cylindrical coils, wherein the transformer core comprises three parallel limbs extending along three parallel limb axis, wherein the transformer core comprises a first and a second parallel yoke section connecting the respective first and the respective second ends of the limbs and wherein each coil of the first group is arranged around a respective limb.
  • Tap changers have the ability to adapt the voltage ratio of a transformer, for example with a rated voltage of 36kV on the primary side and 6kV on the secondary side and with a rated power of 1 MVA, within a certain range, so that the voltage on the output side of the transformer is within a desired range around the nominal voltage.
  • LVR Line Voltage Regulation
  • the booster transformer is electrically in series with a transmission line that's voltage level is subject to be for example too low at its one end.
  • the booster transformer is adding a controlled voltage to the voltage at the one end of the transmission line so that the output voltage of the booster transformer is within the acceptable tolerance band.
  • the booster transformer is supplied by a feeder transformer by means of an intermediate circuit, wherein the feeder transformer itself is supplied by the transmission line, that's voltage level is not within the admitted tolerance band.
  • Booster- and feeder- transformer are typically designed as two fully separated transformers with the same power rating.
  • the transformer core comprises three further limbs that's respective first ends are connected with the second yoke section and that's respective second ends are connected with a third yoke section, which is arranged in parallel to the first and second yoke section and in that a second group of three hollow cylindrical coils is foreseen, wherein each coil of the second group is arranged around one of the respective further limbs.
  • the basic idea of the invention is to arrange the two groups of coils of the two transformers for a line voltage regulation device - the booster and the feeder transformer - on the same transformer core with a common used center yoke, in this case the second yoke area.
  • the first group of coils corresponds to the coils of a feeder transformer and the second group of coils corresponds to the coils of a booster transformer.
  • the groups of coils are arranged in that way, that the magnetic flux caused by the first and second group of coils is opposed each to each other, the magnetic flux in the second yoke area respectively in the common used center yoke is reduced, in the ideal case to zero.
  • a further effect of the reduced magnetic flux in the common center yoke are reduced no-load losses. Additionally a reduction of the sound- respectively vibration level of the voltage-regulation-transformer according to the invention is gained. Also the effort for cabling between the different groups of coils is reduced when arranging them on the same transformer core.
  • the cross section of the yoke(s) in the second yoke section is (a) equal or (b) less compared with the cross section of the yoke(s) in the first or third yoke section.
  • Variant (a) implies a reduction of the cross section of the center yoke by 50% compared to the sum of respective yoke cross sections of a single feeder and a single booster transformer wherein additional advantages concerning reduced losses and sound emission are gained.
  • Variant (b) implies a further reduction of the cross section of the center yoke wherein the effect of the additional advantages might be reduced therewith.
  • the further limbs extend along the three parallel limb axes where also the first three limbs are extending along.
  • the geometry of the core sections for first and second group of coils is equal. Additionally the footprint required for the voltage-regulation-transformer is reduced in an advantageous way since both transformer core sections are stacked on top of each other.
  • the three parallel limb axes are arranged within the same plane. So a space-saving flat design of the voltage-regulation-transformer is gained. Of course also other designs such as triangular are possible.
  • each coil of a group of three hollow cylindrical coils comprises a primary and a secondary single-phase winding which are electrically connected in respective vector-groups to a three-phase primary and secondary winding.
  • a vector group might be triangular (D) or star-like (Y) for example.
  • all single-phase windings have terminals for their electrical connection and are not brought together directly in the voltage-regulation-transformer (Group IIIiii0). Moreover they are indirectly brought together by the neutral point treatment of the respective network they are connected with.
  • the vector-groups of the first and second group of coils are identical.
  • This embodiment enables in an easy way to arrange the coils in that way, that the flux through the common center yoke caused by the first group of coils is opposed to the flux caused by the second group of coils if the voltage-regulation-transformer is used as feeder- booster- transformer combination.
  • respective couples of coils of first and second group for the same electric phase should be arranged along the same limb axis.
  • the first and the second group of coils are rated for at least approximately the same power. This is also of advantage for the use as feeder- booster- transformer combination, since in this case both groups of coils are loaded with the same power due to the coupling in an intermediate circuit.
  • the secondary winding of the first group of coils is electrically connected with the primary winding of the second group of coils in an intermediate circuit and the secondary winding of the second group of coils is foreseen to be connected in series with an electrical component to be supplied.
  • This is a suitable kind of connection of the first and second group of coils to a feeder-booster- transformer combination as it is required for a Line Voltage Regulation (LVR) device.
  • LVR Line Voltage Regulation
  • the secondary winding of the first group of coils is provided with taps, so that the current flow through the intermediate circuit is influenceable by selecting a respective tap.
  • the current flow through the intermediate circuit has to be influenced. If for example the secondary winding of the first group of coils is foreseen over its whole electrical length in equidistant sections with taps - for example 10 in total - the current through the intermediate circuit can be influenced from zero (lowest tap) to maximum (highest tap).
  • first and second groups of coils are electrically connected in that way, that the magnetic flux through the yokes of the second yoke section caused by the first group of coils is opposed to the magnetic flux through the yokes of the second yoke section caused by the second group of coils if used as feeder- and booster transformer combination.
  • the cross section of the common used center yoke in the second yoke section can be reduced in an advantageous way.
  • a voltage-regulation-transformer comprising a transformer core and a first hollow cylindrical coil
  • Figure 1 shows an exemplary voltage-regulation-transformer 10 in a three-dimensional view.
  • a first group 12 of hollow cylindrical coils 14, 16, 18 is arranged on three parallel limbs of a transformer core, which are extending along three parallel limb axes 34, 36, 38.
  • Each of the coils 14, 16, 18 comprises a single-phase primary and secondary winding.
  • the primary windings are electrically arranged in a star (Y) connection and the secondary windings are also arranged in a star (Y) connection which can't be seen in this drawing.
  • Y star
  • Y star
  • Y star connection
  • each of the coils 22, 24, 26 comprises a single-phase primary and a single-phase secondary winding.
  • FIG. 2 shows an exemplary transformer core 40 from a side view.
  • the transformer core 40 comprises three couples of limbs (54, 60; 56, 62; 58, 64) which are extending one above each other along three respective limb axes.
  • respective yoke sections 42, 46, 50 are indicated which are extending perpendicular to the axial extension of the limbs 54, 60; 56, 62; 58, 64.
  • Each yoke section 42, 46, 50 is represented by a respective yoke 44, 48, 52 but can of course comprise more than one yoke, for example in case of a triangular transformer core.
  • the transformer core consists in this example mainly of insulated stacked metal sheets. All yokes 44, 48, 52 and limbs 54, 60; 56, 62; 58, 64 have the same cross section in this example.
  • FIG. 3 shows a voltage-regulation-transformer with intermediate circuit in an electrical sketch 70.
  • the sketch is drawn in a single phase view, but it has to be remarked, that all components are three-phase.
  • the sketch shows the principal circuit of a Line Voltage Regulation (LVR) device.
  • LVR Line Voltage Regulation
  • a controlled voltage 88 is provided which differs from the input voltage 86 by a booster voltage 90.
  • LVR Line Voltage Regulation
  • the booster voltage 90 is added by means of a secondary winding 82 of a second group of coils 78, which is used as a booster transformer.
  • An intermediate circuit 84 is foreseen to drive a current through the primary winding 80 of the second group of coils 78 respectively the booster transformer.
  • the current within the intermediate circuit 84 is driven by the primary 74 and secondary 76 winding of a first group of coils 72, which is used as a feeder transformer.
  • the primary winding 74 is connected with the input of the LVR device.
  • a voltage 90 is added to the input voltage 86 and provided as voltage 88 at the output of the LVR device.
  • An LVR device might be foreseen to add +/- 10% of the rated voltage of a transmission line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP15150285.3A 2015-01-07 2015-01-07 Transformateur de régulation de la tension Withdrawn EP3043362A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15150285.3A EP3043362A1 (fr) 2015-01-07 2015-01-07 Transformateur de régulation de la tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15150285.3A EP3043362A1 (fr) 2015-01-07 2015-01-07 Transformateur de régulation de la tension

Publications (1)

Publication Number Publication Date
EP3043362A1 true EP3043362A1 (fr) 2016-07-13

Family

ID=52282629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15150285.3A Withdrawn EP3043362A1 (fr) 2015-01-07 2015-01-07 Transformateur de régulation de la tension

Country Status (1)

Country Link
EP (1) EP3043362A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3336650A1 (fr) * 2016-12-19 2018-06-20 ABB Schweiz AG Dispositif de réglage de tension longitudinale
CN109935455A (zh) * 2019-04-30 2019-06-25 江苏华鹏变压器有限公司 一种110kV三相干式变压器
CN114297832A (zh) * 2021-12-14 2022-04-08 西南交通大学 一种计及频繁振动的牵引变压器磁滞损耗求解方法

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB423618A (en) * 1932-10-25 1935-02-05 Siemens Ag Improvements in and relating to electric transformers and choking coils
US2127232A (en) * 1936-07-25 1938-08-16 Allis Chalmers Mfg Co Rectifier transformer
US2418643A (en) * 1944-06-05 1947-04-08 Closman P Stocker Magnetic frequency changer
FR1285901A (fr) * 1959-04-13 1962-03-02 Transformateur statique électrique perfectionné
GB907338A (en) * 1959-12-23 1962-10-03 Siemens Reinger Werke Ag A three-phase, high voltage step-up transformer for use with x-ray equipment
FR2126900A1 (en) * 1970-10-09 1972-10-13 Sitelec Electric welding transformer - for two types of welding having different characteristics profile circuits
FR2506064A1 (fr) * 1981-05-18 1982-11-19 Westinghouse Electric Corp Transformateur multiple a elements communs de circuits magnetiques
US4488136A (en) * 1981-05-18 1984-12-11 Westinghouse Electric Corp. Combination transformer with common core portions
JPH01179405A (ja) * 1988-01-07 1989-07-17 Fuji Electric Co Ltd 整流器用変圧器
SU1148507A1 (ru) * 1981-03-24 1992-09-23 Институт Электросварки Им.Е.О.Патона Регулируемый трансформатор
US5182535A (en) * 1989-12-19 1993-01-26 Dhyanchand P John Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding
US20030088967A1 (en) * 1998-11-13 2003-05-15 Hobson Barry Reginald Endless core for a multiphase transformer and a transformer incorporating same
US20060250207A1 (en) * 2005-05-03 2006-11-09 Mte Corporation Multiple three-phase inductor with a common core
WO2010136033A1 (fr) * 2009-05-25 2010-12-02 Vestas Wind System A/S Système de convertisseurs pour éolienne
WO2012103152A2 (fr) * 2011-01-24 2012-08-02 Todd Alexander Shudarek Dispositifs de mitigation d'harmonique et leurs applications
WO2013132131A1 (fr) * 2012-03-08 2013-09-12 Torytrans, S.L. Dispositif inducteur autocouplé à noyau unique

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB423618A (en) * 1932-10-25 1935-02-05 Siemens Ag Improvements in and relating to electric transformers and choking coils
US2127232A (en) * 1936-07-25 1938-08-16 Allis Chalmers Mfg Co Rectifier transformer
US2418643A (en) * 1944-06-05 1947-04-08 Closman P Stocker Magnetic frequency changer
FR1285901A (fr) * 1959-04-13 1962-03-02 Transformateur statique électrique perfectionné
GB907338A (en) * 1959-12-23 1962-10-03 Siemens Reinger Werke Ag A three-phase, high voltage step-up transformer for use with x-ray equipment
FR2126900A1 (en) * 1970-10-09 1972-10-13 Sitelec Electric welding transformer - for two types of welding having different characteristics profile circuits
SU1148507A1 (ru) * 1981-03-24 1992-09-23 Институт Электросварки Им.Е.О.Патона Регулируемый трансформатор
FR2506064A1 (fr) * 1981-05-18 1982-11-19 Westinghouse Electric Corp Transformateur multiple a elements communs de circuits magnetiques
US4488136A (en) * 1981-05-18 1984-12-11 Westinghouse Electric Corp. Combination transformer with common core portions
JPH01179405A (ja) * 1988-01-07 1989-07-17 Fuji Electric Co Ltd 整流器用変圧器
US5182535A (en) * 1989-12-19 1993-01-26 Dhyanchand P John Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding
US20030088967A1 (en) * 1998-11-13 2003-05-15 Hobson Barry Reginald Endless core for a multiphase transformer and a transformer incorporating same
US20060250207A1 (en) * 2005-05-03 2006-11-09 Mte Corporation Multiple three-phase inductor with a common core
WO2010136033A1 (fr) * 2009-05-25 2010-12-02 Vestas Wind System A/S Système de convertisseurs pour éolienne
WO2012103152A2 (fr) * 2011-01-24 2012-08-02 Todd Alexander Shudarek Dispositifs de mitigation d'harmonique et leurs applications
WO2013132131A1 (fr) * 2012-03-08 2013-09-12 Torytrans, S.L. Dispositif inducteur autocouplé à noyau unique

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3336650A1 (fr) * 2016-12-19 2018-06-20 ABB Schweiz AG Dispositif de réglage de tension longitudinale
WO2018114714A1 (fr) * 2016-12-19 2018-06-28 Abb Schweiz Ag Régulateur de tension linéaire
CN110073306A (zh) * 2016-12-19 2019-07-30 Abb瑞士股份有限公司 纵向电压调节器
US10866604B2 (en) 2016-12-19 2020-12-15 Abb Power Grids Switzerland Ag Longitudinal voltage regulator
CN109935455A (zh) * 2019-04-30 2019-06-25 江苏华鹏变压器有限公司 一种110kV三相干式变压器
US12340938B2 (en) 2019-04-30 2025-06-24 Jiangsu Huapeng Transformer Co., Ltd. 110 kV three-phase dry-type transformer and assembly method therefor
CN114297832A (zh) * 2021-12-14 2022-04-08 西南交通大学 一种计及频繁振动的牵引变压器磁滞损耗求解方法

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Inventor name: BUSCHMANN, IRMA

Inventor name: CARLEN, MARTIN