EP0795877A3 - DC bushing - Google Patents

DC bushing Download PDF

Info

Publication number
EP0795877A3
EP0795877A3 EP97103464A EP97103464A EP0795877A3 EP 0795877 A3 EP0795877 A3 EP 0795877A3 EP 97103464 A EP97103464 A EP 97103464A EP 97103464 A EP97103464 A EP 97103464A EP 0795877 A3 EP0795877 A3 EP 0795877A3
Authority
EP
European Patent Office
Prior art keywords
shield
barrier
shield barrier
oil
alternatively
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
EP97103464A
Other languages
German (de)
French (fr)
Other versions
EP0795877B1 (en
EP0795877A2 (en
Inventor
Masaru Kashiwakura
Kazuo Sekine
Toshimitsu Obata
Hiroaki Kojima
Makoto Tanaka
Hiroshi Sugihara
Masayuki Hatano
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.)
Electric Power Development Co Ltd
Kansai Electric Power Co Inc
Shikoku Electric Power Co Inc
Hitachi Ltd
Original Assignee
Electric Power Development Co Ltd
Kansai Electric Power Co Inc
Shikoku Electric Power Co Inc
Hitachi Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13060071&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0795877(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electric Power Development Co Ltd, Kansai Electric Power Co Inc, Shikoku Electric Power Co Inc, Hitachi Ltd filed Critical Electric Power Development Co Ltd
Publication of EP0795877A2 publication Critical patent/EP0795877A2/en
Publication of EP0795877A3 publication Critical patent/EP0795877A3/en
Application granted granted Critical
Publication of EP0795877B1 publication Critical patent/EP0795877B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Insulating Bodies (AREA)

Abstract

A DC bushing (24) having an increased DC dielectric strength includes a porcelain tube (1) constituting a lower portion thereof and immersed in an insulating oil contained in a tank (11), a lower insulated shield (5) provided at a lower end portion of the porcelain tube (1) and composed of a shielding electrode (3) covered with an insulating cover (4), and a shield barrier (8) disposed around an outer periphery of the lower insulated shield (5) with an oil gap (7) being defined between the shield barrier (8) and the lower insulated shield (5). The thickness (W2) of the shield barrier (8) is greater than a width (W1) of the oil gap (7) as viewed in a direction widthwise thereof. Alternatively the shield barrier (9) is formed of a solid insulator having a higher volume resistivity than that of oil-impregnated paper or alternatively the shield barrier (8; 9) is realized in such a structure that upon application of a DC voltage, the proportion of the DC voltage to be borne by the shield barrier (8; 9) is higher than 15 % inclusive.
EP19970103464 1996-03-14 1997-03-03 DC bushing Revoked EP0795877B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8057590A JP2771505B2 (en) 1996-03-14 1996-03-14 DC bushing
JP57590/96 1996-03-14
JP5759096 1996-03-14

Publications (3)

Publication Number Publication Date
EP0795877A2 EP0795877A2 (en) 1997-09-17
EP0795877A3 true EP0795877A3 (en) 1998-09-16
EP0795877B1 EP0795877B1 (en) 2001-12-05

Family

ID=13060071

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970103464 Revoked EP0795877B1 (en) 1996-03-14 1997-03-03 DC bushing

Country Status (4)

Country Link
EP (1) EP0795877B1 (en)
JP (1) JP2771505B2 (en)
CN (1) CN1075659C (en)
DE (1) DE69708727T2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005021255B4 (en) * 2005-05-02 2007-08-16 Siemens Ag Barrier system for the line feedthrough of an electrical system
US7994427B2 (en) 2006-03-24 2011-08-09 Abb Technology Ltd. High voltage insulation system and a method of manufacturing same
CN101136269B (en) 2006-08-31 2013-03-27 Abb研究有限公司 High voltage bushing
CN101373659B (en) * 2007-08-20 2012-08-22 特变电工股份有限公司 Coil-out apparatus of reactor coil and iron core reactor containing the same
CN101373655B (en) 2007-08-20 2013-12-04 特变电工股份有限公司 Iron core reactor
CN101409120B (en) * 2008-11-20 2011-09-14 武汉市德赛电力设备有限公司 Insulator capable of improving external insulation electric strength
FR2947092B1 (en) * 2009-06-18 2016-08-26 Areva T & D Sa STRUCTURE FOR IMPROVING THE DIELECTRIC HOLDING OF ELECTRICAL COMPONENTS.
DE102011008459A1 (en) * 2011-01-07 2012-07-12 Siemens Aktiengesellschaft Cable bushing for the boiler wall of an HVDC component
DE102011008456A1 (en) * 2011-01-07 2012-07-12 Siemens Aktiengesellschaft Cable routing for HVDC transformer coils or HVDC choke coils
DE102011008461A1 (en) * 2011-01-07 2012-07-12 Siemens Aktiengesellschaft Cutting point of a cable feedthrough for a HVDC component
EP2528071B1 (en) * 2011-05-27 2018-08-08 ABB Schweiz AG High voltage arrangement comprising an insulating structure
CN102682934B (en) * 2011-12-01 2014-01-22 湖北鑫德赛绝缘技术有限公司 Insulator with combined type barrier
EP2620958B1 (en) * 2012-01-26 2014-11-26 Siemens Aktiengesellschaft Shielding device for an electrically conductive connection element
CN102543390B (en) * 2012-02-27 2014-06-04 中国西电电气股份有限公司 AC (Alternating Current) 750kV end part outgoing line structure of ultrahigh-voltage converter transformer
KR101363930B1 (en) * 2012-09-24 2014-02-19 주식회사 상원 Bushing shield of double mesh structure
CN104485210B (en) * 2014-12-15 2016-06-22 中国西电电气股份有限公司 A kind of UHV net side 750kV lead-out wire supporting structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681909A (en) * 1979-12-10 1981-07-04 Hitachi Ltd Terminal conductor connecting system
EP0285895A1 (en) * 1987-04-09 1988-10-12 Siemens Aktiengesellschaft High voltage isolation device for transformers and inductances, especially destinated to high voltage direct current transmission

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55136411A (en) * 1979-04-11 1980-10-24 Tokyo Shibaura Electric Co Bushing pocket
JPH09153314A (en) * 1995-11-29 1997-06-10 Kansai Electric Power Co Inc:The Oil-filled bushing for direct current

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681909A (en) * 1979-12-10 1981-07-04 Hitachi Ltd Terminal conductor connecting system
EP0285895A1 (en) * 1987-04-09 1988-10-12 Siemens Aktiengesellschaft High voltage isolation device for transformers and inductances, especially destinated to high voltage direct current transmission

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 149 (E - 075) 19 September 1981 (1981-09-19) *

Also Published As

Publication number Publication date
EP0795877B1 (en) 2001-12-05
CN1075659C (en) 2001-11-28
EP0795877A2 (en) 1997-09-17
JPH09251814A (en) 1997-09-22
DE69708727D1 (en) 2002-01-17
CN1162183A (en) 1997-10-15
DE69708727T2 (en) 2002-08-29
JP2771505B2 (en) 1998-07-02

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