EP0036046B1 - Dérivateur de surtension encapsulé - Google Patents

Dérivateur de surtension encapsulé Download PDF

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Publication number
EP0036046B1
EP0036046B1 EP80200386A EP80200386A EP0036046B1 EP 0036046 B1 EP0036046 B1 EP 0036046B1 EP 80200386 A EP80200386 A EP 80200386A EP 80200386 A EP80200386 A EP 80200386A EP 0036046 B1 EP0036046 B1 EP 0036046B1
Authority
EP
European Patent Office
Prior art keywords
voltage
coatings
over
active
deflector
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
Application number
EP80200386A
Other languages
German (de)
English (en)
Other versions
EP0036046A1 (fr
Inventor
Gaston Dipl.-El.-Ing. Ecklin
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
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0036046A1 publication Critical patent/EP0036046A1/fr
Application granted granted Critical
Publication of EP0036046B1 publication Critical patent/EP0036046B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
    • H01T4/20—Arrangements for improving potential distribution

Definitions

  • the invention relates to an overvoltage arrester enclosed in an electrically conductive and grounded housing.
  • an arrester is, for example, from the article “Reliability and Application of Metal Oxide Surge Arrestors for Power Systems” by S. Tominaga et al., IEEE Transactions on Power Apparaturs and Systems, Vol. PAS-98, No. 3 (1979), in particular p. 809.
  • This arrester With this arrester, a linear potential distribution along the arrester active part and a good dielectric strength are achieved by an electrically conductive shield connected to a high-voltage part and extending along the arrester elements, as well as by shielding rings.
  • the design effort is considerable with such arresters.
  • the shape and dimensions of the shielding and control bodies can only be determined by relatively complicated measuring and computing methods. Particularly in the case of arresters built in small series, high manufacturing costs can therefore be expected.
  • a rotationally symmetrical insulating body 5 in which electrically conductive coatings 6 are provided concentrically surrounding the active conductor part 3, electrically insulated from one another and arranged parallel to the column axis 4 of the active conductor part 3.
  • channels 8 are provided which extend along the active part and through which the insulating material can circulate and, if necessary, dissipate any heat that occurs on the active part 3.
  • a shield electrode 9 lying at high voltage potential homogenizes the electric field of the innermost layers 6 arranged in the area of the high voltage potential 7.
  • the capacitively acting pads 6 are arranged in the insulating body 5 such that the voltage between the high-voltage potential 7 and earth is reduced linearly via the active part 3. This is achieved in that the coverings 6 on their ends facing away from the high-voltage-carrying side of the active part 3 are arranged offset with respect to one another on the inside with a suitable step width s, the elementary capacities between adjacent coverings 6 being determined by the correct choice of the distance d, the length I. and the radius r of these coatings can be determined appropriately, taking into account the stray capacities.
  • the coverings 6 form on their inner sides facing the active part 3 a staircase, the step of which in the region of the high-voltage side of the active part 3 Active part 3 have the smallest distance.
  • the covering arranged at the smallest distance from the active part 3 in the region of the high-voltage-carrying side of the active part 3 is connected to high-voltage potential 7, while the covering having the greatest distance from the active part 3 is attached in the region of the earthed part of the active part 3 and is connected to earth.
  • Linear potential distributions along the active part 3, which are easy to implement, result when the width s of the steps and - as in FIG. 1 - the length of the coverings 6 are each constant in the axial direction and in the radial direction by the distance between two adjacent coverings 6 certain step height increases from the inside to the outside or - as in FIG. 2 - the step height d is constant and the length I of adjacent coverings decreases from the inside to the outside.
  • the coverings 6 surrounding the active part 3 are closed in a galvanic ring. It has proven particularly expedient to successively wrap the coverings in a film-shaped insulating material, such as hard or soft paper, approximately 0.1 mm thick, or in any insulating plastic.
  • the coverings are inserted as a thin metal foil or printed as a jim thick conductive layer.
  • the wound insulating material body 5 is generally cylindrically symmetrical. In order to keep the earth capacities small, however, it is advantageous to remove parts of the body 5 between the covering 6 and the housing 1, so that the body 5 - as can be seen from the figures - is at least partially designed as a truncated cone on the outside.
  • the coverings 6 do not have a strict rotational symmetry about the column axis 4, but expand spirally according to the film thickness, but this deviation from the cylindrical symmetry is negligible, since the distance between the cover 6 and the active part 3 is orders of magnitude higher compared to the layer thickness of the film .
  • the winding technology not only allows the coverings 6 to be fixed in the insulating material body 5 in a simple manner, but the step height d can be changed in a simple manner by multiple winding of the foils.
  • Spark arrester-free arrester elements such as resistors containing zinc oxide are particularly suitable for the surge arrester according to the invention, but it is also possible to use active parts containing spark gap.

Landscapes

  • Thermistors And Varistors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Milling Processes (AREA)

Claims (6)

1. Parafoudre comportant un boîtier conducteur électrique mis à la terre (1), une partie active de parafoudre (3) montée dans le boîtier (1) et branchée entre la haute tension et la terre, comportant des éléments résistifs contenant de l'oxyde de zinc (2) en forme de disques empilés en au moins une colonne et des corps de blindage et de guidage pour produire une distribution de potentiel linéaire le long de la partie active de parafoudre (3), caractérisé en ce qu'à titre de corps de blindage et de guidage sont prévues des armatures conductrices électriques (6) entourant la partie active de parafoudre (3) à peu près concentriquement et décalées les unes des autres dans un corps en matière isolante (5) parallèlement à l'axe de la colonne, l'armature (6) la plus proche de la haute tension étant la plus rapprochée de la partie active de parafoudre (3) et celle qui est la plus proche de la terre étant la plus éloignée de la partie active de parafoudre (3), étant entendu que les distances séparant réciproquement les armatures (6) vont en augmentant de manière continue par échelons à partir du côté haute tension et que, pour des armatures (6) dont les longueurs (I) sont constantes, les distances (d(r)) réciproques augmentent à partir de l'extrémité située du côté haute tension, et pour des armatures (6) dont les distances réciproques (d) sont constantes les longueurs (I(r)) vont en diminuant à partir de l'extrémité située du côté haute tension.
2. Parafoudre suivant la revendication 1, caractérisé en ce qu'au moins 10 armatures (6) sont prévues.
3. Parafoudre suivant la revendication 2, caractérisé en ce que 50 à 150 armatures (6) sont prévues.
4. Parafoudre suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que les armatures (6) sont enroulées dans une matière isolante pelliculaire comme du papier bakélisé ou du papier doux.
5. Parafoudre suivant l'une quelconque des revendications 1 à 4, caractérisé en ce qu'entre le corps en matière isolante (5) et la partie active de parafoudre (3) sont prévus des canaux (8) qui s'étendent le long de la partie active de parafoudre (3).
6. Parafoudre suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que le corps en matière isolante (5) a au moins partiellement la forme d'un cône tronqué.
EP80200386A 1980-03-19 1980-04-28 Dérivateur de surtension encapsulé Expired EP0036046B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2148/80 1980-03-19
CH214880 1980-03-19

Publications (2)

Publication Number Publication Date
EP0036046A1 EP0036046A1 (fr) 1981-09-23
EP0036046B1 true EP0036046B1 (fr) 1984-03-14

Family

ID=4226995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200386A Expired EP0036046B1 (fr) 1980-03-19 1980-04-28 Dérivateur de surtension encapsulé

Country Status (8)

Country Link
US (1) US4408249A (fr)
EP (1) EP0036046B1 (fr)
JP (2) JPS6126449B2 (fr)
BR (1) BR8107092A (fr)
DE (1) DE3066927D1 (fr)
HU (1) HU186886B (fr)
SU (1) SU1166672A3 (fr)
WO (1) WO1981002812A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3411735A1 (de) * 1984-03-30 1985-10-03 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Ueberspannungsableiter
EP1603140A1 (fr) * 2004-06-04 2005-12-07 ABB Technology AG Composant actif pour limiteur de surtension encapsulé
EP1603141B1 (fr) * 2004-06-04 2016-08-24 ABB Schweiz AG Limiteur de surtensions avec isolation au gaz

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE509926A (fr) *
US1935820A (en) * 1931-04-28 1933-11-21 Int Standard Electric Corp High tension cable terminal and joint
US2219910A (en) * 1936-08-12 1940-10-29 Int Standard Electric Corp Termination or joint for high tension electrical cables
DE888132C (de) * 1940-08-16 1953-08-31 Aeg UEberspannungsableiter
US2939976A (en) * 1956-08-31 1960-06-07 Westinghouse Electric Corp Corona suppression in high voltage coils
US3248599A (en) * 1962-02-13 1966-04-26 Hitachi Ltd Dirt-proof multiple-gap device for lightning arresters
DE1538679B2 (de) * 1966-07-12 1972-03-02 Licentia Patent Verwaltungs GmbH, 6000 Frankfurt Kapazitive steuerung von funkenstreckenstapeln fuer ueber spannungsableiter
US3649875A (en) * 1969-08-01 1972-03-14 Mitsubishi Electric Corp Lightning arrester
JPS53143952A (en) * 1977-05-21 1978-12-14 Mitsubishi Electric Corp Protective device for anomalous voltage
US4219862A (en) * 1977-06-22 1980-08-26 Mitsubishi Denki Kabushiki Kaisha Lightning arrester device
US4234902A (en) * 1977-10-07 1980-11-18 Mitsubishi Denki Kabushiki Kaisha Enclosed lightning arrester
JPS6046663B2 (ja) * 1977-11-07 1985-10-17 三菱電機株式会社 接地タンク形避雷装置
JPS5554009A (en) * 1978-10-17 1980-04-21 Hitachi Plant Eng & Constr Co Ltd Filtering apparatus
JPH0534749A (ja) * 1991-07-26 1993-02-12 Asahi Glass Co Ltd 光導波路素子

Also Published As

Publication number Publication date
DE3066927D1 (en) 1984-04-19
SU1166672A3 (ru) 1985-07-07
JPS6126449B2 (fr) 1986-06-20
JPS56500799A (fr) 1981-06-18
EP0036046A1 (fr) 1981-09-23
HU186886B (en) 1985-10-28
BR8107092A (pt) 1982-02-09
JPS57500356A (fr) 1982-02-25
WO1981002812A1 (fr) 1981-10-01
US4408249A (en) 1983-10-04

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