EP0935264A1 - Stromtransformator für eine gasisolierte Schaltanlage - Google Patents

Stromtransformator für eine gasisolierte Schaltanlage Download PDF

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Publication number
EP0935264A1
EP0935264A1 EP99400205A EP99400205A EP0935264A1 EP 0935264 A1 EP0935264 A1 EP 0935264A1 EP 99400205 A EP99400205 A EP 99400205A EP 99400205 A EP99400205 A EP 99400205A EP 0935264 A1 EP0935264 A1 EP 0935264A1
Authority
EP
European Patent Office
Prior art keywords
transformer according
flanges
closing
transformer
connecting rods
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
EP99400205A
Other languages
English (en)
French (fr)
Other versions
EP0935264B1 (de
Inventor
Carmelo Gimeno
André Doessegger
Christian Tschannen
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.)
GE Grid Switzerland GmbH
Original Assignee
Alstom 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 Alstom AG filed Critical Alstom AG
Publication of EP0935264A1 publication Critical patent/EP0935264A1/de
Application granted granted Critical
Publication of EP0935264B1 publication Critical patent/EP0935264B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions

Definitions

  • the present invention relates to an intensity transformer for a single-phase or multi-phase switching installation, isolated gas, comprising at least one support tube on which is mounted at minus a secondary winding containing a magnetic core, this tube being crossed by a primary conductor, and electrically connected, to its ends, with two polygonal metal plates, arranged in parallel, constituting closing flanges of an enclosure containing in particular said magnetic core and said secondary winding.
  • German utility certificate DE-GM 7914263 describes a transformer of unipolar intensity of this type.
  • the core support tube is put in place in suitable recesses in two end plates.
  • An insulation ring is associated with a plate to avoid a bond between the two plates through the support tube.
  • a tube peripheral cylindrical surrounding the core is disposed between the two plates which are also coupled to each other by means of screws Tightening. The length adjustment of the support tube and the cylindrical tube device allows to realize in a simple way different transformers provided with a variable number of cores having different lengths.
  • the outside diameter of the transformer must be greater than that of the largest core, to provide space for the passage of the clamping screws. Since the diameter of the transformer is crucial to assess the size of a multipolar installation, since it defines the distance between the transformers corresponding respectively to each phase, the recommended solution is not advantageous because it does not allow the dimensions to be reduced of the installation.
  • EP 0 665 561 A1 The European patent application published under the number EP 0 665 561 A1 describes an intensity transformer with a unipolar annular core whose enclosure metal consists of two molded parts. One of these pieces constitutes a base plate and the other part constitutes the side walls of the metal enclosure and the upper closure plate. The two parts each have a peripheral belt, these belts being arranged to be juxtaposed and partially nested and pressed against each other the other by bolts. The diameter of these belts is greater than core diameter.
  • the object of the present invention is to produce a current intensity transformer this simple type of construction, which can be made in several dimensions and, in particular, with magnetic cores of different lengths, and at using components that are easy to manufacture.
  • the transformer according to the invention characterized in that that the support tube is gas tight and fits at its ends, sealingly, in appropriate recesses in said enclosure closing flanges, one of said ends being connected said corresponding closing flange by an intermediate ring of a insulating material, and said closing flanges being interconnected by rigid connecting rods arranged in the corners of these flanges.
  • the flanges of closure are common to several corresponding magnetic cores respectively with several phases and each comprise several recesses arranged for receiving and sealingly accommodating one end a support tube for one of the magnetic cores corresponding to one of the phases.
  • said recesses are arranged linearly.
  • the connecting rods are electrically connected at their ends with the flanges of closing. This connection is made by screwing with said closing flanges.
  • the transformer can also have two connecting rods arranged between two adjacent secondary windings corresponding to two of the installation phases.
  • said closure flanges are identical.
  • the secondary winding is advantageously made integral with one of said closing flanges by means of at least one tightening strap and said flange has at least one protuberance and an opening in this protuberance to allow the passage of said strap Tightening.
  • the connecting rods are of cross section quadrangular and said enclosure has fixed side walls to said connecting rods.
  • Said side walls are advantageously fixed to the connecting rods to the screw means, and the screws are arranged asymmetrically with respect to the longitudinal axis of the transformer.
  • the transformer includes a connection box containing connection terminals electrically connected to the said secondary windings.
  • the single-phase current transformer 10 as shown comprises a support tube 11 carrying at least one, but in this case three annular cores 12, 13 and 14 respectively surrounded by secondary windings 15, 16 and 17. These secondary windings are superimposed and arranged coaxially with respect to the support tube 11. They are tightened against each other by means of a tightening strap 18.
  • the support tube 11 as well as the secondary windings 15, 16 and 17 are arranged inside an enclosure 19 defined by two plates of metal constituting respectively a lower closing flange 20 and an upper closing flange 21, and by four side walls formed by metal plates 22, 23, 24 and 25.
  • the closing flanges 20 and 21 are interconnected by rods of connection 26 arranged at the corners of the closing flanges 20 and 21, which have preferably a polygonal shape and, in this case, a shape square.
  • the two closing flanges 20 and 21 are fixed by screwing to the ends of connecting rods 26 and metal plates 22, 23, 24 and 25 are screwed onto the connecting rods 26.
  • the lower closing flange 20 has two protrusions 27 and 28, diametrically opposite, and each comprising a through opening, 29 and 30 respectively, allowing the passage of two tightening straps 18, diametrically opposite, provided to maintain the position secondary windings around the support tube 11.
  • the tube support 11 is housed at its ends in recesses in the two closing flanges 20 and 21
  • these two flanges are suitably shaped to receive these ends of the support tube.
  • Annular seals 37 seal between the support tube 11 and the closing flanges 20, 21.
  • the support tube is electrically insulated relative to the lower closing flange 20 by means of a ring 38 insulating and is electrically connected to the upper closing flange 21.
  • connection box 32 containing connection terminals is mounted laterally on the transformer 10 and more particularly on the metal plate 23 constituting one of the side walls of the enclosure 19.
  • Figure 3 mainly illustrates the juxtaposition of two transformers of intensity 10 such as that defined above.
  • these screws are fixed asymmetrically.
  • Two screws of a plate, one of which is arranged near its angle upper and the other near its lower opposite corner, are used to fix the plate to the two corresponding connecting rods 26. This this procedure makes it possible to reduce the size of the transformer.
  • the lower and upper closing flanges have the same profile, which reduces manufacturing costs and avoids the storage of two different rooms.
  • the multiphase intensity transformer 10a has three support tubes 11a, 11b and 11c each carrying at least one, but in this case three annular cores 12a, 12b, 12c; 13a, 13b, 13c; 14a, 14b, 14c respectively surrounded by secondary windings 15a, 15b, 15c; 16a, 16b, 16c; 17a, 17b, 17c.
  • These windings are superimposed and arranged coaxially like those of the transformer 10 described above. They are also tightened and held in place by tightening straps 18a.
  • the support tubes 11a, 11b and 11c as well as the coils correspondents are arranged inside an enclosure 19a defined by two metal plates respectively constituting a closing flange lower 20a and an upper closing flange 21a and by four walls lateral formed by metal plates 22a, 23a, 24a and 25a.
  • the enclosure 19a is common for the three support tubes and the corresponding secondary windings.
  • the closing flanges 20a and 21a have profiled recesses of suitably to receive the ends of the support tubes. These tubes are electrically insulated from the lower closing flange 20a thanks to a ring of an electrically insulating material and electrically connected to the upper closing flange 21a.
  • the closing flanges 20a and 21a are interconnected by rods of link 26a arranged at the corners of the form closing flanges rectangular and by intermediate connecting rods 26b, arranged two to two between two adjacent support tubes and the secondary windings correspondents.
  • the metal plates 22a, 23a, 24a and 25a constituting the side walls are rectangular in shape and are screwed directly on the connecting rods 26a and 26b.
  • the intensity transformer according to the invention makes it possible to group the components corresponding to the different phases so as to reduce clutter.
  • the size of the enclosure is barely greater than that of the secondary winding (s).
  • the grouping of several phases generates a slightly clutter greater than that generated by the combination of several phases in the same enclosure according to the multiphase embodiment.
  • this current transformer is also advantageous from the causes a variation in the dimensions of the support tube, of the core magnetic and secondary windings does not entail additional costs important.
  • the construction is easy and results in a robust device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Transformer Cooling (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Housings And Mounting Of Transformers (AREA)
EP99400205A 1998-02-09 1999-01-29 Stromtransformator für eine gasisolierte Schaltanlage Expired - Lifetime EP0935264B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9801470A FR2774803B1 (fr) 1998-02-09 1998-02-09 Transformateur d'intensite pour une installation de commutation a isolation gazeuse
FR9801470 1998-02-09

Publications (2)

Publication Number Publication Date
EP0935264A1 true EP0935264A1 (de) 1999-08-11
EP0935264B1 EP0935264B1 (de) 2004-05-12

Family

ID=9522726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400205A Expired - Lifetime EP0935264B1 (de) 1998-02-09 1999-01-29 Stromtransformator für eine gasisolierte Schaltanlage

Country Status (8)

Country Link
US (1) US6014072A (de)
EP (1) EP0935264B1 (de)
JP (1) JPH11317319A (de)
CN (1) CN1130737C (de)
AT (1) ATE266897T1 (de)
DE (1) DE69917092T2 (de)
ES (1) ES2221325T3 (de)
FR (1) FR2774803B1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6760206B2 (en) 2001-03-16 2004-07-06 Cooper Industries, Inc. Current sensor supporting structure
DE502004002290D1 (de) * 2004-02-27 2007-01-25 Abb Technology Ag Kompaktes Stromwandlergehäuse für gasisolierte Schaltanlagen
FR2874122B1 (fr) 2004-08-06 2006-09-22 Areva T & D Ag Transformateur de courant de type triphase et poste electrique equipe d'un tel transformateur de courant
JP4703316B2 (ja) * 2005-08-12 2011-06-15 株式会社東芝 ガス絶縁変流器
JP5243161B2 (ja) * 2008-09-18 2013-07-24 日本板硝子株式会社 画像読取装置
DE102010004971A1 (de) * 2010-01-18 2011-07-21 Abb Technology Ag Vorrichtung für eine Schaltanlage
EP2586045A1 (de) * 2010-06-23 2013-05-01 ABB Technology AG Stromwandlervorrichtung
CA2783433C (en) * 2011-07-25 2020-12-15 William Kenneth Mcgrail Transformerinstrumentationandmeteringsystem
US8587399B2 (en) 2012-02-06 2013-11-19 Continental Control Systems, Llc Split-core current transformer
CN103346007A (zh) * 2013-07-26 2013-10-09 常州博瑞电力自动化设备有限公司 隔离断路器电子式电流互感器
FR3016995B1 (fr) * 2014-01-24 2017-10-13 Alstom Technology Ltd Montage d'une bride sur un tube pour transformateur
DE102015210135A1 (de) * 2015-06-02 2016-12-08 Siemens Aktiengesellschaft Stromwandler und Schaltanlage mit einem Stromwandler
EP3182427B1 (de) * 2015-12-18 2020-05-20 ABB Schweiz AG Stromwandler für hochspannungsgasisolierte schaltanlagenunterstation
JP6416827B2 (ja) * 2016-06-23 2018-10-31 ファナック株式会社 筒状のコアを備えるリアクトル、モータ駆動装置、およびアンプ装置
CN111640571B (zh) * 2020-06-28 2021-09-10 江西广能电气设备有限公司 一种铁心柱卡头扎带

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1030446B (de) * 1953-08-24 1958-05-22 Iacoqia Nv Durchfuehrungsstromwandler fuer Hochspannung
WO1979000729A1 (en) * 1978-03-09 1979-10-04 Bbc Brown Boveri & Cie Combined current and voltage transformers for a high voltage installation enclosed in a metal envelope filled with pressure gas
EP0650236A1 (de) * 1993-10-26 1995-04-26 Siemens Aktiengesellschaft Elektrische Hochspannungsschaltanlage mit einem Ringkernstromwandler

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986884A (en) * 1934-10-11 1935-01-08 Peter W Fassler Welding transformer
US2431189A (en) * 1946-03-28 1947-11-18 Gen Electric Electromagnetic induction apparatus
US4338657A (en) * 1974-05-21 1982-07-06 Lisin Vladimir N High-voltage transformer-rectifier device
DE3608391A1 (de) * 1985-11-15 1987-09-17 Messwandler Bau Ag Hochspannungsstromwandler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1030446B (de) * 1953-08-24 1958-05-22 Iacoqia Nv Durchfuehrungsstromwandler fuer Hochspannung
WO1979000729A1 (en) * 1978-03-09 1979-10-04 Bbc Brown Boveri & Cie Combined current and voltage transformers for a high voltage installation enclosed in a metal envelope filled with pressure gas
EP0650236A1 (de) * 1993-10-26 1995-04-26 Siemens Aktiengesellschaft Elektrische Hochspannungsschaltanlage mit einem Ringkernstromwandler

Also Published As

Publication number Publication date
FR2774803A1 (fr) 1999-08-13
DE69917092T2 (de) 2005-05-12
FR2774803B1 (fr) 2001-04-27
JPH11317319A (ja) 1999-11-16
ES2221325T3 (es) 2004-12-16
CN1130737C (zh) 2003-12-10
DE69917092D1 (de) 2004-06-17
US6014072A (en) 2000-01-11
ATE266897T1 (de) 2004-05-15
CN1227956A (zh) 1999-09-08
EP0935264B1 (de) 2004-05-12

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