WO2006001724A1 - Noyau isolant capacitif de traversee haute tension - Google Patents

Noyau isolant capacitif de traversee haute tension Download PDF

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Publication number
WO2006001724A1
WO2006001724A1 PCT/PL2005/000041 PL2005000041W WO2006001724A1 WO 2006001724 A1 WO2006001724 A1 WO 2006001724A1 PL 2005000041 W PL2005000041 W PL 2005000041W WO 2006001724 A1 WO2006001724 A1 WO 2006001724A1
Authority
WO
WIPO (PCT)
Prior art keywords
conducting
layers
capacitive
sheet
core
Prior art date
Application number
PCT/PL2005/000041
Other languages
English (en)
Inventor
Jan Czyzewski
Robert Sekula
Johan Berner
Original Assignee
Abb Sp. Z O.O.
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 Sp. Z O.O. filed Critical Abb Sp. Z O.O.
Publication of WO2006001724A1 publication Critical patent/WO2006001724A1/fr

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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

Definitions

  • the subject of the invention is a capacitive insulating core of a high- voltage bushing applicable in electric power equipment, and especially in power transformers, comprising a resin-impregnated insulating core situated around a cylindrical mandrel.
  • insulating cores of type RIP Resin Impregnated Paper
  • RIP Resin Impregnated Paper
  • the wound paper layers overlap each other partially or completely and, every few or so layers of paper, between the paper layers there is inserted a conducting layer in the form of a sheet of aluminum foil of suitable dimensions adjusted to the size of the bushing and to its performance parameters.
  • the size of the aluminum foil sheets and their number is selected to ensure the proper shaping of the electric field in the bushing.
  • the mandrel, together with the wound-on insulating paper sandwiched with inserted aluminum foil sheets is placed in a cylindrical mould which is filled with epoxy resin and the insulation paper is impregnated with resin, and then the resin hardening process is carried out.
  • Hardened resin together with the paper and the foil form a material with high mechanical resistance and good insulating properties, which are required for the insulating bushing cores. After removal from the mould, the core is machined in order to give it its final shape.
  • the essence of the capacitive insulating core of a high-voltage bushing according to the invention, formed by winding layers of electrically insulating material around a cylindrical mandrel, between which layers there are placed sheets of conducting material whose function is to shape the electric field in the bushing is that at least one sheet of the conducting material that is placed in the core between the layers of the electrically insulating material is a structure made on the basis of paper or woven or unwoven fabric and it contains conducting particles suspended in it, forming a percolative network electrically conducting in the sheet plane, the conducting particles having a basically elongated shape and such dimensions that the ratio of their length to the largest cross section dimension exceeds 10.
  • the sheet of the conducting material placed in the core between the layers of the electrically insulating material contains conducting particles in the form of carbon nanotubes.
  • the structure of a single sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of single- wall or multiwall carbon nanotubes less than 50 nm in diameter.
  • multiwall carbon nanotubes between 10 nm and 30 nm in diameter and between 1 ⁇ m and 10 ⁇ m in length are used.
  • the sheet of the conducting material placed in the core between the layers of the electrically insulating material contains conducting particles in the form of carbon nanofibers.
  • the structure of a single sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of carbon nanofibers of diameters between 50 nm and 300 nm.
  • graphite carbon nanofibers 100 nm to 200 nm in diameter and 30 ⁇ m to 100 ⁇ m long are used.
  • the sheet of the conducting material placed in the core between the layers of the electrically insulating material contains conducting particles in the form of metallic microfibers.
  • the structure of a single sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of metallic microfibers of diameters below 30 ⁇ m.
  • steel microfibers 5 to 10 ⁇ m in diameter and 1 to 6 mm long are used.
  • the capacitive insulating core of the high-voltage bushing is characterized by that at least one sheet of conducting material that is placed in the core between the layers of the electrically insulating material is a structure made on the basis of paper or woven or unwoven fabric and it contains conducting particles suspended in it, forming a percolative network electrically conducting in the sheet plane, the conducting particles having a form of grains of dimensions less than 1 ⁇ m.
  • the sheet of conducting material placed in the core between the layers of the electrically insulating material contains conducting particles in the form of metallic nanograins.
  • the structure of a single sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of metallic nanograins 10 nm to 1000 nm in diameter.
  • the conducting particles Preferably in second version of the invention embodiment, aluminum nanograins 50 nm to 150 nm in diameter are used.
  • An advantage of the invention is that it provides sufficiently good conductivity of the conducting material used to shape the electric field in the bushing, while at the same time it allows to produce the insulating core material not susceptible to cracking and delamination during the production process.
  • the elongated shape of the conducting particles located in the paper or woven or unwoven fabric structure and their large length-to- transverse dimension ratio results in good conductivity of the conducting material with only a small content of these particles in the structure, because the conductivity is of the percolation type.
  • Especially advantageous is the use of carbon nanofibers, carbon nanotubes or metallic microfibers showing, besides the large length-to-diameter ratio, a very high conductivity along their length.
  • Good electric conductivity can also be obtained using particles which do not have an elongated shape, but which are very small, for example metallic grains of submicron dimensions.
  • Another advantage of the invention is that it eliminates local thermal stresses in the bushing due to similar thermal properties of the insulating material and the structure made on the basis of paper or woven or unwoven fabric containing conducting particles. Moreover, the use of such a conducting structure allows to avoid difficulties connected with its placement on the layers of insulating material which occur if metal foil is used, and therefore the quality of the bushing increases.
  • fig. 1 shows schematically the capacitive insulating core of the high-voltage bushing in longitudinal section A-A
  • fig. 2 shows the insulating core of the high-voltage bushing in transverse section B-B.
  • a capacitive insulating core 1 is situated around a cylindrical mandrel 2 and placed inside a standard insulating casing intended for high-voltage bushings, which is not shown in the drawing.
  • the capacitive core 1 consists of many layers of electrically insulating crepe paper 3 which are wound onto each other and around the mandrel.
  • the insulating paper layers are spirally wound onto the mandrel 2, and their dimensions, i.e. the thickness of an individual sheet and its width and length, depend on the size of the insulating bushing and its technical parameters. Between the insulating paper sheets there are inserted single sheets of conducting material 4 which serve to shape the electric field in the bushing.
  • a single sheet of the conducting material 4 is a structure made on the basis of paper and containing conducting particles forming a percolative conducting network in the sheet plane.
  • the sizes of the conducting particles are such that at least one external dimension of a single particle is less than 30 ⁇ m.
  • woven or unwoven fabric of adequate properties can be used as the basis for the structure containing conducting particles.
  • the structure of an individual sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of single- wall or multiwall carbon nanotubes of diameters smaller than 50 nm.
  • multiwall carbon nanotubes 10nm to 30nm in diameter and 1 ⁇ m to 10 ⁇ m long made by Sun Nanotech Co.
  • the structure of an individual sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of carbon nanofibers 50 nm to 300 nm in diameter.
  • the conducting particles have the form of carbon nanofibers 50 nm to 300 nm in diameter.
  • graphite carbon nanofibers made by Applied Science Inc., USA, type Pyrograph® type PR-19 that are 100 nm to 200 nm in diameter and 30 ⁇ m to 100 ⁇ m in length, or type PR-24 that are 60 nm to 150nm in diameter and 30 ⁇ m to 100 ⁇ m in length can be used.
  • the structure of an individual sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of microfibers less then 30 ⁇ m in diameter.
  • steel microfibers 6 ⁇ m in diameter and 5 mm in length produced by Nippon Seisen Co., Ltd., Japan can be used.
  • the structure of an individual sheet of conducting material is dry paper material made on the basis of cellulose fibers, and the conducting particles have the form of metallic nanograins 10 nm to 1000 nm in diameter.
  • aluminum nanograins 50 nm to 150nm in diameter, produced by QinetiQ Nanometerials ltd., UK can be used.
  • the structure of an individual sheet of conducting material contains a mixture of particles containing carbon nanotubes and nanofibers, or a mixture of carbon particles and metallic particles.
  • the layers of electrically insulating material 3 together with the sheets of conducting material 4 which form the insulating core 1 are impregnated with impregnating resin. Impregnation is carried out in suitably shaped moulds. After the mould has been filled, the insulating core 1_ takes the shape of the mould. Then this core undergoes a hardening process and when this is finished, it is machined to obtain the required shape. The ready insulating core 1 is placed in the insulating casing of the high-voltage bushing.

Landscapes

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

Abstract

L'invention concerne un noyau isolant capacitif de traversée haute tension pouvant être appliqué dans un équipement électrique, en particulier dans des transformateurs de puissance. Le noyau selon l'invention est formé par l'enroulement de couches de matériau électriquement isolant autour d'un mandrin cylindrique, entre lesquelles sont insérées, à certains intervalles, des feuilles de matériau conducteur définissant le champ électrique dans la traversée. Au moins une feuille de matériau conducteur placée dans le noyau entre les couches de matériau électriquement isolant présente une structure à base de papier ou de tissu tissé ou non tissé contenant des particules conductrices suspendues formant un réseau percolatif électriquement conducteur dans le plan de feuilles.
PCT/PL2005/000041 2004-06-29 2005-06-23 Noyau isolant capacitif de traversee haute tension WO2006001724A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL368833A PL206279B1 (pl) 2004-06-29 2004-06-29 Pojemnościowy korpus izolacyjny wysokonapięciowego przepustu
PLP-368833 2004-06-29

Publications (1)

Publication Number Publication Date
WO2006001724A1 true WO2006001724A1 (fr) 2006-01-05

Family

ID=34979804

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2005/000041 WO2006001724A1 (fr) 2004-06-29 2005-06-23 Noyau isolant capacitif de traversee haute tension

Country Status (2)

Country Link
PL (1) PL206279B1 (fr)
WO (1) WO2006001724A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1939897A1 (fr) * 2006-12-28 2008-07-02 ABB Research Ltd. Structure isolante dotée d'écrans formant un champ électrique
EP2180485A1 (fr) 2008-10-27 2010-04-28 Abb Research Ltd. Traversée haute tension
EP2541561A1 (fr) * 2011-06-28 2013-01-02 ABB Research Ltd. Design amélioré de feuille pour une traversee de condensateur ä haute tension
WO2015117823A1 (fr) * 2014-02-05 2015-08-13 Abb Technology Ltd Noyau de condensateur
CN105161230A (zh) * 2015-10-20 2015-12-16 山东辰祥电气设备有限公司 合成纤维增强树脂高压套管
CN105355344A (zh) * 2015-12-20 2016-02-24 西安神电高压电器有限公司 高压套管及其加工工艺
EP2715743B1 (fr) * 2011-05-27 2020-03-04 ABB Schweiz AG Composant électrique pour installation haute tension
CN113412522A (zh) * 2019-02-11 2021-09-17 赫兹曼电力公司 弹性管状高电压绝缘体
CN114078618A (zh) * 2021-12-23 2022-02-22 山东辰祥电气设备有限公司 一种干式电容型套管芯体及其制作方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01283716A (ja) * 1988-05-10 1989-11-15 Mitsubishi Electric Corp モールド・ブツシング
EP1103988A2 (fr) * 1999-11-26 2001-05-30 PASSONI E VILLA FABBRICA ISOLATORI E CONDENSATORI S.p.A. Traversée - isolateur, calibrée à semi-capacité, remplie de gaz isolant, comme le SF6

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01283716A (ja) * 1988-05-10 1989-11-15 Mitsubishi Electric Corp モールド・ブツシング
EP1103988A2 (fr) * 1999-11-26 2001-05-30 PASSONI E VILLA FABBRICA ISOLATORI E CONDENSATORI S.p.A. Traversée - isolateur, calibrée à semi-capacité, remplie de gaz isolant, comme le SF6

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 062 (E - 0883) 5 February 1990 (1990-02-05) *

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1939897A1 (fr) * 2006-12-28 2008-07-02 ABB Research Ltd. Structure isolante dotée d'écrans formant un champ électrique
WO2008080547A1 (fr) * 2006-12-28 2008-07-10 Abb Research Ltd Structure isolante à écrans formant un champ électrique
US8227698B2 (en) 2006-12-28 2012-07-24 Abb Research Ltd Insulating structure with screens shaping an electric field
EP2180485A1 (fr) 2008-10-27 2010-04-28 Abb Research Ltd. Traversée haute tension
EP2715743B1 (fr) * 2011-05-27 2020-03-04 ABB Schweiz AG Composant électrique pour installation haute tension
CN103534766B (zh) * 2011-06-28 2016-01-27 Abb研究有限公司 改进的套管箔设计
EP2541561A1 (fr) * 2011-06-28 2013-01-02 ABB Research Ltd. Design amélioré de feuille pour une traversee de condensateur ä haute tension
US8907223B2 (en) 2011-06-28 2014-12-09 Abb Research Ltd. Bushings foil design
CN103534766A (zh) * 2011-06-28 2014-01-22 Abb研究有限公司 改进的套管箔设计
WO2013000597A1 (fr) * 2011-06-28 2013-01-03 Abb Research Ltd Conception de feuille de bagues améliorée
KR101720479B1 (ko) 2014-02-05 2017-03-27 에이비비 테크놀로지 리미티드 콘덴서 코어
WO2015117823A1 (fr) * 2014-02-05 2015-08-13 Abb Technology Ltd Noyau de condensateur
KR20160098525A (ko) * 2014-02-05 2016-08-18 에이비비 테크놀로지 리미티드 콘덴서 코어
CN106415740B (zh) * 2014-02-05 2018-10-19 Abb瑞士股份有限公司 冷凝器芯
US9552907B2 (en) 2014-02-05 2017-01-24 Abb Schweiz Ag Condenser core
CN106415740A (zh) * 2014-02-05 2017-02-15 Abb技术有限公司 冷凝器芯
CN105161230B (zh) * 2015-10-20 2016-11-30 山东辰祥电气设备有限公司 合成纤维增强树脂高压套管
CN105161230A (zh) * 2015-10-20 2015-12-16 山东辰祥电气设备有限公司 合成纤维增强树脂高压套管
CN105355344A (zh) * 2015-12-20 2016-02-24 西安神电高压电器有限公司 高压套管及其加工工艺
CN113412522A (zh) * 2019-02-11 2021-09-17 赫兹曼电力公司 弹性管状高电压绝缘体
EP3924984A4 (fr) * 2019-02-11 2022-11-16 HM Power AB Corps isolant haute tension tubulaire élastique
CN113412522B (zh) * 2019-02-11 2024-08-30 赫兹曼电力公司 弹性管状高电压绝缘体
CN114078618A (zh) * 2021-12-23 2022-02-22 山东辰祥电气设备有限公司 一种干式电容型套管芯体及其制作方法

Also Published As

Publication number Publication date
PL206279B1 (pl) 2010-07-30
PL368833A1 (pl) 2006-01-09

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