EP0078366A2 - Traversée à condensateur pour appareils électriques à haute tension - Google Patents

Traversée à condensateur pour appareils électriques à haute tension Download PDF

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Publication number
EP0078366A2
EP0078366A2 EP82106906A EP82106906A EP0078366A2 EP 0078366 A2 EP0078366 A2 EP 0078366A2 EP 82106906 A EP82106906 A EP 82106906A EP 82106906 A EP82106906 A EP 82106906A EP 0078366 A2 EP0078366 A2 EP 0078366A2
Authority
EP
European Patent Office
Prior art keywords
condenser
insulating liquid
bushing
filled
insulating
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.)
Ceased
Application number
EP82106906A
Other languages
German (de)
English (en)
Other versions
EP0078366A3 (fr
Inventor
Günter Dr. Pfeiffer
Werner Dr. Reich
Klaus Liebscher
Albert Grose
Wolfgang Zürich
Gerhard Brödner
Joachim Voss
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.)
Transformatorenwerk Karl Liebknecht VEB
Original Assignee
Transformatorenwerk Karl Liebknecht VEB
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 Transformatorenwerk Karl Liebknecht VEB filed Critical Transformatorenwerk Karl Liebknecht VEB
Publication of EP0078366A2 publication Critical patent/EP0078366A2/fr
Publication of EP0078366A3 publication Critical patent/EP0078366A3/fr
Ceased legal-status Critical Current

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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
    • H01B17/34—Insulators containing liquid, e.g. oil
    • 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
    • H01B17/54—Insulators or insulating bodies characterised by their form having heating or cooling devices

Definitions

  • the invention relates to an outdoor condenser bushing filled with an insulating liquid for electrical high-voltage devices, in particular for transformers and choke coils.
  • the active part is generally housed in a closed housing filled with an insulating medium.
  • Bushings are used to lead the high-voltage conductor connections out of the grounded housing, which represent a complete module that is sealed off from the outside. At higher voltages, these bushings have a capacitor winding arranged concentrically around the conductor, the coverings of which reduce the electrical field between the conductor pin and flange in a controlled manner to the earth potential of the housing.
  • bushings of this type are closed off by a porcelain cap, which in the open-air version has screen-like ribs for extension the insulation section has.
  • the end of the housing is terminated by a smooth porcelain insulator.
  • the space between the capacitor winding and the porcelain covers is filled with an insulating liquid, for example insulating oil.
  • This design is intended to prevent both a breakdown of the insulation between the electrodes and an external flashover over the outdoor insulator.
  • ice formation on the throw-over porcelain can be prevented do not prevent winter temperatures in the ambient air.
  • the connections of the electrical high-voltage devices can be wired outside of the pollution area or out of the area of a particularly high and constant air humidity.
  • Methods and arrangements are also known with which the surfaces of outdoor insulation are to be kept dry and ice-free by blowing with air.
  • the disadvantage here is that considerable amounts of air at a high temperature are required, for which complex air generation and blowing devices in the high-voltage range are required, which can impair the operational reliability of the implementation.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of creating a condenser bushing in the open-air version for high-voltage devices in which electrical flashovers due to icing of the air-side union porcelain, in particular in the vicinity of wet cooling towers of power plants, are prevented.
  • the insulating liquid-filled interior of the bushing has inlet and outlet openings in the flange fitting is connected to a circuit system consisting of pipes, heating elements and a circulating pump.
  • a heat exchanger arranged in the insulating oil of the high-voltage device and using the heat loss of the high-voltage device or, if this cannot guarantee sufficient heating of the bushing or the high-voltage device has no oil filling, an externally heated insulating liquid heater serves as heating elements.
  • the heat exchanger can also be arranged outside the insulating oil filling of the high-voltage device, it then being necessary to ensure that hot insulating oil is flushed around the heat exchanger, for example in the suction line of the cooling system.
  • the externally heated insulating liquid heater is connected in series with the heat exchanger in the event that the operating heat of the device oil is insufficient. This externally heated heat source is also necessary if icy bushings of a cold high-voltage device must be defrosted before commissioning.
  • the interior of the bushing filled with insulating fluid is provided with a partition in the area of the flange fitting, which divides the interior into an upper and lower insulating fluid space.
  • the circulating heated insulating liquid is supplied or discharged via a plurality of inclusions arranged in the flange fitting. Outlet openings.
  • this is provided with ribs to enlarge the outer surface.
  • a further improvement in the heat removal from the insulating oil of the high-voltage device is achieved in that a rib-shaped heat collector is attached to the lower outer end of the inner conductor. This heat collector can also be designed such that its outer contour serves as a shield for the connection structure of the transformer or device rejection.
  • a bypass line Arranged between the inlet and outlet openings of the insulating liquid on the flange fitting is a bypass line with a shut-off device that connects the lower and upper insulating liquid spaces of the bushing with one another in order to enable the circulation pump to be shut down if there is sufficient automatic heat from the thermosiphon system.
  • the drawing shows the sectional view of a capacitor bushing designed according to the invention, which consists of the basic elements, union porcelain 1, a / provided with ribs 18 on the device-side insulator 2, / the flange fitting 3, the inner conductor 4 with the insulating fluid passage openings 5; 6 and / capacitor winding 7 there.
  • a circuit consisting of pipes 24, heat exchanger 9, externally heated insulating liquid heater 11, circulation pump 12 and bypass line 22 with shut-off device 23 is connected.
  • the insulating liquid which is heated by the insulating oil 8 of the high-voltage device in the operating temperature or by the externally heated insulating liquid heater 11, is pressed into the lower insulating liquid space 17 by means of the circulating pump 12, passed through the opening 6 forming the inner conductor 4 and into the inside of the / bolt pipe passed through the passage opening 5 into the upper insulating liquid space 16, where it moves downward on the inner wall of the air-side throw-over porcelain 1 and thereby gives off heat to it by convection.
  • the effectiveness of this circulatory system depends on the excess temperature of the heated insulating liquid compared to the ambient air and on the amount of insulating liquid circulated in the unit of time.
  • the interior of the bushing in the area of the flange fitting 3 is provided with a partition 15, which divides the interior into an upper and lower insulating liquid space 16; 17 shares.
  • the insulating liquid pressed into the lower insulating liquid space 17 is sucked out of the upper space 16 again.
  • the suction is expediently carried out at several points on the flange circumference at the same time, so that the inner surface of the union porcelain 1 is flushed with insulating liquid as uniformly as possible.
  • a finned heat collector 19 which transfers the absorbed heat via the central transition piece 20 to the lower part of the inner conductor 4.
  • the outer contour of the heat collector 19 is covered in such a way that it can also serve as a shielding electrode 21 for the derivatives.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Insulators (AREA)
  • Transformer Cooling (AREA)
EP82106906A 1981-11-03 1982-07-30 Traversée à condensateur pour appareils électriques à haute tension Ceased EP0078366A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD234580 1981-11-03
DD23458081A DD201217B1 (de) 1981-11-03 1981-11-03 Kondensator-durchfuehrung fuer elektrische hochspannungsgeraete

Publications (2)

Publication Number Publication Date
EP0078366A2 true EP0078366A2 (fr) 1983-05-11
EP0078366A3 EP0078366A3 (fr) 1986-10-22

Family

ID=5534497

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106906A Ceased EP0078366A3 (fr) 1981-11-03 1982-07-30 Traversée à condensateur pour appareils électriques à haute tension

Country Status (2)

Country Link
EP (1) EP0078366A3 (fr)
DD (1) DD201217B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2993671A1 (fr) * 2014-09-03 2016-03-09 Alstom Technology Ltd Bague comportant un condensateur de classement de papier imprégné d'huile avec un système de soupape permettant de filtrer l'huile sans devoir la démonter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856125A (en) * 1929-12-16 1932-05-03 Ohio Brass Co Heater for insulators
US1983371A (en) * 1934-06-23 1934-12-04 Ohio Brass Co Temperature control for oil filled bushings
FR1387067A (fr) * 1963-10-08 1965-01-29 Comp Generale Electricite Perfectionnements aux bornes de traversée pour tensions élevées
US4123618A (en) * 1976-06-09 1978-10-31 Westinghouse Electric Corp. Vapor-cooled terminal-bushings for oil-type circuit-interrupters
JPS56150808A (en) * 1980-04-23 1981-11-21 Kansai Electric Power Co Inc:The Prevention device of formation of dew in case body
US4308420A (en) * 1980-03-13 1981-12-29 Mcgraw-Edison Company Electrical apparatus with convectively cooled bushing connector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856125A (en) * 1929-12-16 1932-05-03 Ohio Brass Co Heater for insulators
US1983371A (en) * 1934-06-23 1934-12-04 Ohio Brass Co Temperature control for oil filled bushings
FR1387067A (fr) * 1963-10-08 1965-01-29 Comp Generale Electricite Perfectionnements aux bornes de traversée pour tensions élevées
US4123618A (en) * 1976-06-09 1978-10-31 Westinghouse Electric Corp. Vapor-cooled terminal-bushings for oil-type circuit-interrupters
US4308420A (en) * 1980-03-13 1981-12-29 Mcgraw-Edison Company Electrical apparatus with convectively cooled bushing connector
JPS56150808A (en) * 1980-04-23 1981-11-21 Kansai Electric Power Co Inc:The Prevention device of formation of dew in case body

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 6, Nr. 32 (E-96)[910], 26. Februar 1982; & JP-A-56 150 808 (MITSUBISHI DENKI K.K.) 21.11.1981 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2993671A1 (fr) * 2014-09-03 2016-03-09 Alstom Technology Ltd Bague comportant un condensateur de classement de papier imprégné d'huile avec un système de soupape permettant de filtrer l'huile sans devoir la démonter
CN105390218A (zh) * 2014-09-03 2016-03-09 阿尔斯通技术有限公司 套管以及用于过滤和/或处理套管的油液的方法

Also Published As

Publication number Publication date
EP0078366A3 (fr) 1986-10-22
DD201217B1 (de) 1986-05-21
DD201217A1 (de) 1983-07-06

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Inventor name: BROEDNER, GERHARD

Inventor name: PFEIFFER, GUENTER, DR.

Inventor name: REICH, WERNER, DR.

Inventor name: LIEBSCHER, KLAUS

Inventor name: GROSE, ALBERT

Inventor name: ZUERICH, WOLFGANG

Inventor name: VOSS, JOACHIM