EP0383988A1 - Passage à haut voltage pour appareils électriques réfrigérés à l'huile - Google Patents

Passage à haut voltage pour appareils électriques réfrigérés à l'huile Download PDF

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Publication number
EP0383988A1
EP0383988A1 EP89104925A EP89104925A EP0383988A1 EP 0383988 A1 EP0383988 A1 EP 0383988A1 EP 89104925 A EP89104925 A EP 89104925A EP 89104925 A EP89104925 A EP 89104925A EP 0383988 A1 EP0383988 A1 EP 0383988A1
Authority
EP
European Patent Office
Prior art keywords
voltage
voltage bushing
fixed resistor
choke winding
bushing according
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
EP89104925A
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German (de)
English (en)
Other versions
EP0383988B1 (fr
Inventor
Walter Dr.-Ing. Müller
Wolfgang Dipl.-Ing. Maxwitat
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT89104925T priority Critical patent/ATE93081T1/de
Publication of EP0383988A1 publication Critical patent/EP0383988A1/fr
Application granted granted Critical
Publication of EP0383988B1 publication Critical patent/EP0383988B1/fr
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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements

Definitions

  • the invention relates to a high-voltage bushing for oil-cooled electrical devices, in particular high-voltage machine and mains transformers, in which components for the electrical and mechanical connection of the end of a feed-through conductor bolt to a high-voltage connecting lead lie in a cup-shaped shield.
  • Such a high-voltage bushing is known from DE-OS 25 54 460.
  • This known implementation is connected to the end of the winding rejection to be connected via screw connections and flexible conductor sections. To avoid externally effective inhomogeneities of the electrical field, this screw connection together with the flexible conductor sections is completely immersed in a cup-shaped shield in the operating state.
  • DE-OS 28 42 341 also already discloses an attenuator for damping high-frequency vibrations emanating from switchgear assemblies when hitting transformers, for example in which a voltage-dependent resistor, a low-induction fixed resistor and a choke winding are provided in a concentric arrangement from the inside to the outside and electrically connected in parallel to one another.
  • the separate arrangement of such attenuators before the input of high-voltage transformers requires an even larger space than results from the enlargement of transformer dimensions as a result of wiring the windings with ZnO elements.
  • the invention is therefore based on the object of creating a space-saving arrangement for resonance-sensitive high-voltage devices, such as, for example, mains or machine transformers, by which high-frequency vibrations caused by switching operations or the like are damped to such an extent that damage to the connected devices can be ruled out.
  • resonance-sensitive high-voltage devices such as, for example, mains or machine transformers
  • the object of the invention is achieved with a high-voltage bushing of the type mentioned above in that a low-induction fixed resistor forming the end of the connecting conductor is spatially and electrically located between a chalice-shaped shield and a similar chalice-shaped shielding pot and that the load current is electrically parallel and spatially coaxial with the fixed resistor leading ironless choke winding is provided which includes the shielding pot at one end and the shielding at the other end.
  • the choke winding is wound from two radially superposed electrically parallel conductors which are spatially crossed out in the middle of the winding, and the fixed resistor consists of a stack of resistance disks lying against one another in the axial direction.
  • High-voltage bushings designed in accordance with the invention are very advantageous because they provide practically no particular space requirement by adding an attenuator to reliably protect the devices that are connected to them from high-frequency vibrations that resonate.
  • the high-voltage bushing according to the invention the relatively complex wiring of individual components of the devices to be protected can be dispensed with, as can attenuators in special housings to be set up next to these devices.
  • a high-voltage bushing 2 with a bushing conductor pin 3 is installed in the cover 1 of a transformer tank which is not shown in detail and is completely filled with oil and closed on all sides.
  • the lower end of the high-voltage bushing 2 is immersed in a cup-shaped shield 4 together with the lower end of the bushing conductor pin 3.
  • the lower end of the feed-through conductor pin 3 carries flexible connecting leads 5, not shown, of which several are electrically connected in parallel and are evenly distributed over the circumference and connect the lead-through conductor stud 3 galvanically to a connecting plate 6 and to a winding end 7 of a choke winding 8.
  • connection plate 6 Coaxial to the axis of the high-voltage bushing 2, the connection plate 6 continues below the goblet-shaped shield 4 in a low-induction fixed resistor from a stack of resistance disks 9 lying against one another in the axial direction.
  • the resistance disks 9 lie concentrically within the choke winding 8. Both the choke winding 8 and the stack of the resistance disks 9 are supported on a goblet-shaped shielding pot 10, which carries an inclined chimney 11 for receiving a winding rejection 12.
  • the choke winding 8 is wound from two radially one above the other electrically connected conductors, which are preferably represented by copper ropes with a circular cross section and paper wrapping as insulation. To ensure a uniform current load on both conductors, they are crossed out in the middle of the choke winding 8 by cross-out conductors 16. The ends of the choke winding 8 are supported on press rings 13.
  • the fixed resistor located within the choke winding consists of a stack of nine resistance disks 9, of which only the middle one is spaced from the adjacent resistance disks by short supports 14.
  • the ends of the middle resistance disk 9 are electrically connected to the cross-out conductors 16 in the middle of the choke winding 8 via the supports 14 via potential bridges 15. Mutual voltage control of the fixed resistor and the choke winding 8 is thereby forced.
  • the high-voltage bushing 2 and the resistor disks 9 connected downstream thereof and the choke winding 8 are loaded with a low-frequency current, for example of 50 or 60 Hz.
  • the choke winding 8 drops significantly less than 0.1 o / oo of the operating voltage, and the resistance disks 9 contribute practically nothing to the current carrying, since their resistance is approximately 10 f times the resistance of the choke winding 8.
  • the voltage supplied via the high-voltage bushing 2 is consequently passed on to the winding lead-out 12 with almost no voltage drop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Insulating Of Coils (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Transformer Cooling (AREA)
  • Rectifiers (AREA)
  • Organic Insulating Materials (AREA)
EP89104925A 1989-02-20 1989-03-20 Passage à haut voltage pour appareils électriques réfrigérés à l'huile Expired - Lifetime EP0383988B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89104925T ATE93081T1 (de) 1989-02-20 1989-03-20 Hochspannungsdurchfuehrung fuer oelgekuehlte elektrische geraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905173 1989-02-20
DE3905173 1989-02-20

Publications (2)

Publication Number Publication Date
EP0383988A1 true EP0383988A1 (fr) 1990-08-29
EP0383988B1 EP0383988B1 (fr) 1993-08-11

Family

ID=6374519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104925A Expired - Lifetime EP0383988B1 (fr) 1989-02-20 1989-03-20 Passage à haut voltage pour appareils électriques réfrigérés à l'huile

Country Status (4)

Country Link
EP (1) EP0383988B1 (fr)
JP (1) JP2805690B2 (fr)
AT (1) ATE93081T1 (fr)
DE (1) DE58905274D1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19824606A1 (de) * 1998-06-02 1999-12-16 Siemens Ag Vorrichtung zur Begrenzung von Überspannungen für Transformatoren
EP2187407A1 (fr) * 2007-08-20 2010-05-19 Tebian Electric Apparatus Stock CO., LTD Dispositif de câble de sortie d'une bobine de réacteur et réacteur à noyau de fer le comprenant
CN102456469A (zh) * 2010-10-15 2012-05-16 Abb技术有限公司 用于油浸变压器中的高压引出线的球盖
EP2924698A1 (fr) * 2014-03-27 2015-09-30 ABB Technology AG Passage huile-huile et transformateur à huile
EP3093938A1 (fr) * 2015-05-12 2016-11-16 Siemens Aktiengesellschaft Système d'exécution haute tension
US10366861B2 (en) 2014-08-25 2019-07-30 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. High voltage feedthrough assembly, time-resolved transmission electron microscope and method of electrode manipulation in a vacuum environment
US11823815B2 (en) 2018-08-30 2023-11-21 Hitachi Energy Ltd Shield for a terminal of a high-voltage electrical device and method for operating the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105845332B (zh) * 2016-04-28 2017-10-27 绵阳启明星电力设备有限公司 油浸式变压器引线固定装置及其引线的固定方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2554460A1 (de) * 1975-01-17 1976-07-22 Smit Nijmegen Bv Verfahren zur herstellung einer elektrisch leitenden verbindung zwischen einer wicklung und einem anschlussleiter eines transformators fuer hohe spannung und ein transformator, versehen mit einer solchen verbindung
DE2842341A1 (de) * 1978-09-28 1980-04-10 Transformatoren Union Ag Daempfungsglied zum einbau in hochspannungskabelnetze
DD211665A1 (de) * 1982-11-17 1984-07-18 Transform Roentgen Matern Veb Fluessigkeitsgekuehlte hochstromdurchfuehrungsanordnung
EP0224072A1 (fr) * 1985-11-15 1987-06-03 Siemens Aktiengesellschaft Transformateur équipé d'un dispositif de sécurité
DE3543584A1 (de) * 1985-12-10 1987-06-11 Volta Werke Electricitaet Transformator mit sicherungseinrichtung
EP0163907B1 (fr) * 1984-05-04 1988-06-29 Siemens Aktiengesellschaft Enroulement haute tension à répartition de tension réglée pour transformateurs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2554460A1 (de) * 1975-01-17 1976-07-22 Smit Nijmegen Bv Verfahren zur herstellung einer elektrisch leitenden verbindung zwischen einer wicklung und einem anschlussleiter eines transformators fuer hohe spannung und ein transformator, versehen mit einer solchen verbindung
DE2842341A1 (de) * 1978-09-28 1980-04-10 Transformatoren Union Ag Daempfungsglied zum einbau in hochspannungskabelnetze
DD211665A1 (de) * 1982-11-17 1984-07-18 Transform Roentgen Matern Veb Fluessigkeitsgekuehlte hochstromdurchfuehrungsanordnung
EP0163907B1 (fr) * 1984-05-04 1988-06-29 Siemens Aktiengesellschaft Enroulement haute tension à répartition de tension réglée pour transformateurs
EP0224072A1 (fr) * 1985-11-15 1987-06-03 Siemens Aktiengesellschaft Transformateur équipé d'un dispositif de sécurité
DE3543584A1 (de) * 1985-12-10 1987-06-11 Volta Werke Electricitaet Transformator mit sicherungseinrichtung

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19824606A1 (de) * 1998-06-02 1999-12-16 Siemens Ag Vorrichtung zur Begrenzung von Überspannungen für Transformatoren
EP2187407A1 (fr) * 2007-08-20 2010-05-19 Tebian Electric Apparatus Stock CO., LTD Dispositif de câble de sortie d'une bobine de réacteur et réacteur à noyau de fer le comprenant
EP2187407A4 (fr) * 2007-08-20 2013-01-23 Tebian Electric Apparatus Stock Co Ltd Dispositif de câble de sortie d'une bobine de réacteur et réacteur à noyau de fer le comprenant
CN102456469A (zh) * 2010-10-15 2012-05-16 Abb技术有限公司 用于油浸变压器中的高压引出线的球盖
CN102456469B (zh) * 2010-10-15 2016-04-06 Abb技术有限公司 用于油浸变压器中的高压引出线的球盖
EP2924698A1 (fr) * 2014-03-27 2015-09-30 ABB Technology AG Passage huile-huile et transformateur à huile
US10366861B2 (en) 2014-08-25 2019-07-30 Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. High voltage feedthrough assembly, time-resolved transmission electron microscope and method of electrode manipulation in a vacuum environment
EP3093938A1 (fr) * 2015-05-12 2016-11-16 Siemens Aktiengesellschaft Système d'exécution haute tension
US11823815B2 (en) 2018-08-30 2023-11-21 Hitachi Energy Ltd Shield for a terminal of a high-voltage electrical device and method for operating the same

Also Published As

Publication number Publication date
ATE93081T1 (de) 1993-08-15
JPH02262312A (ja) 1990-10-25
JP2805690B2 (ja) 1998-09-30
DE58905274D1 (de) 1993-09-16
EP0383988B1 (fr) 1993-08-11

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