WO2022082880A1 - Dispositif d'isolation d'extrémité pour bobine de régulation de tension d'un transformateur de puissance immergé dans l'huile - Google Patents

Dispositif d'isolation d'extrémité pour bobine de régulation de tension d'un transformateur de puissance immergé dans l'huile Download PDF

Info

Publication number
WO2022082880A1
WO2022082880A1 PCT/CN2020/127410 CN2020127410W WO2022082880A1 WO 2022082880 A1 WO2022082880 A1 WO 2022082880A1 CN 2020127410 W CN2020127410 W CN 2020127410W WO 2022082880 A1 WO2022082880 A1 WO 2022082880A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulating device
device body
holes
oil
end insulation
Prior art date
Application number
PCT/CN2020/127410
Other languages
English (en)
Chinese (zh)
Inventor
戴志强
Original Assignee
吴江变压器有限公司
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 吴江变压器有限公司 filed Critical 吴江变压器有限公司
Publication of WO2022082880A1 publication Critical patent/WO2022082880A1/fr

Links

Images

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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00

Definitions

  • the invention relates to a transformer component, in particular to an end insulating device for a voltage regulating coil of an oil-immersed power transformer.
  • the upper and lower ends of the voltage regulating coil of the oil-immersed power transformer generally have end insulation.
  • the end insulation is generally made of laminated insulating cardboard and is cylindrical. In the traditional structure, the end insulation is designed in a cylindrical shape and is installed on the upper and lower parts of the coil to fix, compress and increase the creepage distance of the coil.
  • the thickness of the voltage regulating coil is large, in order to ensure the effect of the end insulation, the thickness of the end insulation needs to be increased simultaneously.
  • the thickness of the end insulation is large, there is a situation where the transformer oil cannot fully penetrate the end insulation, the air existing in the end insulation cannot be separated out, and the gas is trapped in the end insulation, which increases the breakdown of the end insulation. The probability and the possibility of increased partial discharge during product operation have left hidden dangers for the stable operation of the product in the later stage.
  • the technical problem solved by the present invention is to provide an end insulation device for the voltage regulating coil of an oil-immersed power transformer, which is improved for the situation that the original end insulation structure cannot be penetrated by transformer oil, and the gas pocket cannot be precipitated in the insulation.
  • an insulating device for the end of a voltage regulating coil of an oil-immersed power transformer which is installed on the upper and lower ends of the voltage regulating coil, and includes an insulating device body; the insulating device body is in the form of a cylinder. A plurality of process through holes are formed on the surface of the insulating device body.
  • the diameter of the process through hole on the insulating device body is 6-10 mm.
  • the inner diameter of the voltage regulating coil is d
  • the outer diameter is D
  • the number of struts is n
  • the distance between every two process through holes in the horizontal direction is 3.14*(d+D)/2n.
  • the distance between every two process through holes in the vertical direction is 100-140 mm.
  • the distance from the process through hole to the upper and lower sides of the insulating device body is at least 50-100 mm.
  • the process holes are added on the insulating device body of the present invention, which ensures that the insulating device body can be completely infiltrated by the transformer oil, and the insulating device body does not contain air, thereby ensuring the reliability of the insulating device body;
  • the process holes are arranged according to a certain rule, which ensures that there is no air in the process holes and the reliability of the coil finished product.
  • Fig. 1 is a schematic diagram of the body structure of an insulating device
  • Figure 2 is a schematic diagram of the installation of the insulating device body.
  • the insulating device at the end of the voltage regulating coil of the oil-immersed power transformer is installed on the upper and lower ends of the voltage regulating coil 200, and includes the insulating device body 100; the insulating device body 100 is cylindrical; A plurality of process through holes 101 are formed on the surface of the insulating device body 100 .
  • the increased process through holes 101 can increase the contact area of the insulating device body when it is immersed in oil, so that the end insulation can be completely saturated, and the reliability of the end insulation can be ensured.
  • the diameter of the process through hole 101 on the insulating device body 100 is 6-10mm; in this example, the diameter of the process through hole 101 is 8mm; the inner diameter of the voltage regulating coil 200 is d, the outer diameter is D, and the support
  • the number of bars 210 is n, and the distance between every two process through holes 101 in the horizontal direction is 3.14*(d+D)/2n; the distance between every two process through holes 101 in the vertical direction is 100-140mm, in this example
  • the spacing is 120mm; the distance from the process through hole 101 to the upper and lower sides of the insulating device body 100 is at least 50-100mm.
  • the problem that the insulation structure of the original end cannot be penetrated by transformer oil and the gas pocket cannot be precipitated in the insulation is solved. It ensures the reliability of the end insulation and the reliability of the finished coil, which lays the groundwork for the stable operation of the product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)

Abstract

La présente invention concerne un dispositif d'isolation d'extrémité pour une bobine de régulation de tension d'un transformateur de puissance immergé dans l'huile, monté sur des extrémités supérieure et inférieure d'une bobine de régulation de tension (200), et comprenant un corps de dispositif isolant (100). Le corps de dispositif isolant (100) est cylindrique ; plusieurs trous traversants de traitement (101) sont disposés sur la surface du corps de dispositif isolant (100) ; le diamètre des trous traversants de traitement (101) sur le corps de dispositif isolant (100) est de 6 à 10 mm ; le diamètre interne de la bobine de régulation de tension est d, et le diamètre externe de la bobine de régulation de tension est D ; le nombre de bandes de support est n ; la distance entre chaque paire de trous traversants de traitement (101) dans la direction horizontale est de 3,14 * (d +D)/2n ; la distance entre tous les deux trous traversants de traitement (101) dans la direction verticale est de 100 à 140 mm ; la distance la plus courte entre les trous traversants de traitement (101) et des côtés supérieur et inférieur du corps de dispositif isolant (100) est de 50 à 100 mm. Les trous traversants de traitement (101) peuvent augmenter la zone de contact du corps de dispositif isolant (100) pendant l'immersion dans l'huile, de telle sorte que l'isolation d'extrémité peut être complètement immergée. Selon le mode d'agencement des trous de traitement selon le motif dans la présente solution, sur la base de la non-modification de la fonctionnalité de l'isolation d'extrémité, les problèmes selon lesquels la structure d'isolation d'extrémité d'origine ne peut pas être immergée par l'huile de transformateur, et le gaz est scellé dans l'isolation et ne peut pas être évacué sont résolus.
PCT/CN2020/127410 2020-10-21 2020-11-09 Dispositif d'isolation d'extrémité pour bobine de régulation de tension d'un transformateur de puissance immergé dans l'huile WO2022082880A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011134210.1 2020-10-21
CN202011134210.1A CN112151248A (zh) 2020-10-21 2020-10-21 油浸式电力变压器调压线圈端部绝缘装置

Publications (1)

Publication Number Publication Date
WO2022082880A1 true WO2022082880A1 (fr) 2022-04-28

Family

ID=73954339

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/127410 WO2022082880A1 (fr) 2020-10-21 2020-11-09 Dispositif d'isolation d'extrémité pour bobine de régulation de tension d'un transformateur de puissance immergé dans l'huile

Country Status (2)

Country Link
CN (1) CN112151248A (fr)
WO (1) WO2022082880A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1693859A1 (fr) * 2005-02-22 2006-08-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Transformateur à chambres multiples
CN106653324A (zh) * 2016-12-01 2017-05-10 保定天威保变电气股份有限公司 一种变压器用控制爬电的调压绕组端部绝缘结构
CN206672757U (zh) * 2017-04-18 2017-11-24 大庆市富隆达石油工程机械设备有限公司 一种新型非晶合金油浸式变压器
CN107845485A (zh) * 2017-12-06 2018-03-27 吴江变压器有限公司 一种用于变压器或电抗器的器身冷却结构
CN207731791U (zh) * 2017-10-26 2018-08-14 山东鲁圣电气设备有限公司 一种提高非晶合金油浸式变压器抗短路的装置
CN210865864U (zh) * 2019-12-24 2020-06-26 保定天威保变电气股份有限公司 一种大型变压器器身端部压装结构
CN111354548A (zh) * 2020-04-09 2020-06-30 常州工学院 一种油浸式变压器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1693859A1 (fr) * 2005-02-22 2006-08-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Transformateur à chambres multiples
CN106653324A (zh) * 2016-12-01 2017-05-10 保定天威保变电气股份有限公司 一种变压器用控制爬电的调压绕组端部绝缘结构
CN206672757U (zh) * 2017-04-18 2017-11-24 大庆市富隆达石油工程机械设备有限公司 一种新型非晶合金油浸式变压器
CN207731791U (zh) * 2017-10-26 2018-08-14 山东鲁圣电气设备有限公司 一种提高非晶合金油浸式变压器抗短路的装置
CN107845485A (zh) * 2017-12-06 2018-03-27 吴江变压器有限公司 一种用于变压器或电抗器的器身冷却结构
CN210865864U (zh) * 2019-12-24 2020-06-26 保定天威保变电气股份有限公司 一种大型变压器器身端部压装结构
CN111354548A (zh) * 2020-04-09 2020-06-30 常州工学院 一种油浸式变压器

Also Published As

Publication number Publication date
CN112151248A (zh) 2020-12-29

Similar Documents

Publication Publication Date Title
CN101173182B (zh) 一种原油乳状液静电脱水器
WO2022082880A1 (fr) Dispositif d'isolation d'extrémité pour bobine de régulation de tension d'un transformateur de puissance immergé dans l'huile
CN202855498U (zh) 一种非晶合金油浸式变压器
WO2010057422A1 (fr) Isolateur pouvant améliorer la résistance électrique d'une isolation externe
CN101572141B (zh) 一种串级式高压套管
CN206672757U (zh) 一种新型非晶合金油浸式变压器
CN201347356Y (zh) 一种接地极风冷平板式臭氧产生单元
CN108962606B (zh) 一种高压固态铝电容器的阳极化成电解液及其化成方法
CN205050693U (zh) 平板高压变压器
CN107749339A (zh) 一种油浸式非晶合金变压器线圈
CN106653324A (zh) 一种变压器用控制爬电的调压绕组端部绝缘结构
KR20110041021A (ko) 이온 발생 장치
CN209656842U (zh) 一种局部放电缺陷模拟试验用实体变压器
CN113640632B (zh) 一种用于预防换流站阻尼电容托架发生异常放电的方法
RU168127U1 (ru) Остов высоковольтного ввода с твердой RIP-изоляцией, выполненной из перфорированной крепированной бумаги
CN110729103A (zh) 一种新型隔离变压器
CN107799245A (zh) 耐低氟化合物腐蚀的胶浸玻璃纤维绝缘套管
CN211150214U (zh) 一种用于高压电缆终端的塔型复合绝缘套管
CN106710839A (zh) 一种干式变压器及其专用高压线圈
CN218214820U (zh) 一种特高压套管
JP6159967B2 (ja) 油浸紙コンデンサブッシング
CN204834269U (zh) 风力发电用箱式变电站油箱
CN209487738U (zh) 一种高压电极柱
CN213753959U (zh) 一种防变形双通套管
CN218996506U (zh) 新能源电动汽车高电压用smd变压器骨架

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20958458

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20958458

Country of ref document: EP

Kind code of ref document: A1