WO2013064410A1 - Procédé pour l'isolation de façon diélectrique d'éléments électriques actifs - Google Patents

Procédé pour l'isolation de façon diélectrique d'éléments électriques actifs Download PDF

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Publication number
WO2013064410A1
WO2013064410A1 PCT/EP2012/071095 EP2012071095W WO2013064410A1 WO 2013064410 A1 WO2013064410 A1 WO 2013064410A1 EP 2012071095 W EP2012071095 W EP 2012071095W WO 2013064410 A1 WO2013064410 A1 WO 2013064410A1
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WO
WIPO (PCT)
Prior art keywords
gas
electrical
insulating gas
circuit breaker
insulating
Prior art date
Application number
PCT/EP2012/071095
Other languages
English (en)
Inventor
Johannes Eicher
Holger Pernice
Thomas Schwarze
Original Assignee
Solvay Sa
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 Solvay Sa filed Critical Solvay Sa
Publication of WO2013064410A1 publication Critical patent/WO2013064410A1/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
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/56—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances gases

Definitions

  • the invention concerns a method for dielectrically insulating active electric parts a dielectric insulation medium comprising CF 3 -C(0)-C(CF 3 ) 2 F
  • Dielectric insulation media in liquid or gaseous state are applied for the insulation of electrical active parts in a wide variety of electrical apparatuses, e.g. in switchgears or transformers.
  • the electrical active part in medium or high voltage metal encapsulated switchgears is arranged in gas tight housings comprising a dielectric insulating gas. This gas also serves to extinct any arcs.
  • WO 2010/142346 discloses that fluoroketones with 4 to 12 carbon atoms are suitable components of dielectric insulating gases
  • dodecafluoro-2-methylpentan-3-one is in the focus of that document. They are said to have a high dielectric strength and provide only little contribution to global warming potential.
  • the object of the present invention is to provide an improved for electrical insulation of electrical active parts. This object and other objects are achieved by the current invention.
  • the method of the present invention provides for the dielectric insulation of active electric parts wherein the electrical active part is arranged in a gas-tight housing comprising an insulating gas which contains or consists
  • CF 3 -C(0)-C(CF 3 ) 2 F can be manufactured from CF 3 C(0)F and
  • the electrical active parts are medium voltage or high voltage parts.
  • the term "medium voltage” relates to a voltage in the range of 1 kV to 72 kV ; the term “high voltage” refers to a voltage of more than 72 kV. While these are preferred electrical active parts in the frame of the present invention, the parts may also e low voltage parts with a voltage below 1 kV being concerned.
  • the electrical active parts of the invention can be “stand alone” parts, or they can be part of an assembly of parts, e.g. of an apparatus. This will now be explained in detail.
  • the electrical active part can be a switch, for example, a fast acting earthing switch, a disconnector, a load-break switch or a puffer circuit breaker, in particular a medium- voltage circuit breaker (GIS-MV), a generator circuit breaker (GIS-HV), a high voltage circuit breaker, a bus bar a bushing, a gas- insulated cable, a gas-insulated transmission line, a cable joint, a current transformer, a voltage transformer or a surge arrester.
  • GIS-MV medium- voltage circuit breaker
  • GIS-HV generator circuit breaker
  • a high voltage circuit breaker a bus bar a bushing, a gas- insulated cable, a gas-insulated transmission line, a cable joint, a current transformer, a voltage transformer or a surge arrester.
  • the electrical active part may also be part of an electrical rotating machine, a generator, a motor, a drive, a semiconducting device, a computing machine, a power electronics device or high frequency parts, for example, antennas or ignition coils.
  • the method of the invention is especially suited for medium voltage switchgears and high voltage switchgears.
  • the insulating gas is preferably at a pressure of equal to or greater than 0.1 bar (abs.).
  • the insulating gas is at preferably a pressure equal to or lowers than 30 bar (abs).
  • a preferred pressure range is from 1 to 20 bar (abs.).
  • the partial pressure of CF 3 -C(0)-C(CF 3 ) 2 F depends, i.a., upon its concentration in the isolating gas. If the dielectric isolating gas consists of CF 3 -C(0)-C(CF 3 ) 2 F, its partial pressure is equal to the total pressure and corresponds to the ranges given above. If the dielectric gas includes an inert gas, the partial pressure of CF 3 -C(0)-C(CF 3 ) 2 F is correspondingly lower. A partial pressure of CF 3 -C(0)-C(CF 3 ) 2 F which is equal to or lower than 10 bar (abs) is preferred.
  • the insulating gas comprises
  • inert gas denotes a gas which is non-reactive under the conditions in the electrical active parts.
  • any other dielectric insulating gas may be applied as "inert gas" additionally to the content of CF 3 -C(0)-C(CF 3 ) 2 F.
  • the composition of the dielectric insulating gas and especially that the content of CF 3 -C(0)-C(CF 3 ) 2 F in the inert gas is such that under the climate conditions or the temperature in the ambience of the electrical apparatus, under the pressure in the electrical part, essentially no condensation of the components in the dielectric insulating gas occurs.
  • the term "essentially no condensation” denotes that at most 5 % by weight, preferably at most 2% by weight, of the dielectric insulating gas condenses.
  • the amounts of CF 3 -C(0)-C(CF 3 ) 2 F, the kind and amount of inert gas are selected such that the partial pressure of CF 3 -C(0)-C(CF 3 ) 2 F is lower than the pressure where condensation of CF 3 -C(0)-C(CF 3 ) 2 F is observed at a reasonably low
  • the insulating gas comprises
  • the content of CF 3 -C(0)-C(CF 3 ) 2 F is preferably equal to or greater than 1 % by volume. In the insulating gas, the content
  • CF 3 -C(0)-C(CF 3 ) 2 F is preferably equal to or lower than 30 % by volume.
  • the balance to 100 % by volume is inert gas. Alternatively, the balance to 100 % by volume is air or synthetic air. Most preferably, the content of CF 3 -C(0)- C(CF 3 ) 2 F in the dielectric insulating gas is from 5 to 25 % by volume.
  • the inert gas is selected from the group consisting of nitrogen and helium.
  • Nitrogen as inert gas is especially preferred, and the insulating gas of the present invention consists essentially of CF 3 -C(0)-C(CF 3 ) 2 F and nitrogen.
  • Another object of the present invention concerns the use
  • CF 3 -C(0)-C(CF 3 ) 2 F is the low boiling point of about 25°C.
  • Example 1 Manufacture of CF 3 -C(0)-C(CF 3 ) 2 F
  • CF 3 -C(0)-C(CF 3 ) 2 F is manufactured by the reaction of CF 3 -C(0)-F with hexafluoropropylene in the presence of KHF2 in acetonitrile in an autoclave at 100°C for 4 hours and 125°C for 5 hours.
  • Example 2 Manufacture of dielectric insulating gases
  • a homogenous mixture consisting of CF 3 -C(0)-C(CF 3 ) 2 F and N 2 in a volume ratio 1 :4 is manufactured in an apparatus comprising a static mixer and a compressor.
  • Example 3 Provision of an earth cable containing the dielectric insulating gas of example2
  • the gas mixture of example 2 is directly fed into an earth cable for high voltage, until a total pressure of 10 bar (abs) in the cable is achieved.
  • Example 4 A switchgear containing CF 3 -C(0)-C(CF 3 ) 2 F and N 2 in a volume ratio 1 :4
  • a switchgear which contains a switch surrounded by a gas tight metal case.
  • the gas mixture of example 2 is passed into the gas tight metal case via a valve until a pressure of 18 bar (abs) is achieved.
  • Example 5 Provision of a gas-insulated transmission line containing the dielectric insulating gas of example 3
  • the gas mixture of example 2 is directly fed into an earth cable for high voltage, until a total pressure of 10 bar (abs) in the cable is achieved.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Organic Insulating Materials (AREA)

Abstract

Selon l'invention, du CF3-C(O)-C(CF3)2F, de préférence en mélange avec du gaz inerte, par exemple du N2 ou de l'hélium, est appliqué comme gaz isolant diélectrique.
PCT/EP2012/071095 2011-11-04 2012-10-25 Procédé pour l'isolation de façon diélectrique d'éléments électriques actifs WO2013064410A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11187797 2011-11-04
EP11187797.3 2011-11-04

Publications (1)

Publication Number Publication Date
WO2013064410A1 true WO2013064410A1 (fr) 2013-05-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/071095 WO2013064410A1 (fr) 2011-11-04 2012-10-25 Procédé pour l'isolation de façon diélectrique d'éléments électriques actifs

Country Status (1)

Country Link
WO (1) WO2013064410A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016092115A1 (fr) * 2014-12-12 2016-06-16 Abb Technology Ag Appareil permettant la génération, la distribution et/ou l'utilisation d'énergie électrique et composant pour un appareil de ce type
EP3079157A1 (fr) * 2015-04-09 2016-10-12 Solvay SA Procédés d'isolation diélectrique de composants électriques actifs
EP3079156A1 (fr) * 2015-04-09 2016-10-12 Solvay SA Procédés d'isolation diélectrique de composants électriques actifs
WO2017093504A1 (fr) * 2015-12-04 2017-06-08 Solvay Sa Procédés pour isoler diélectriquement des éléments électriques actifs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185734A (en) 1960-10-25 1965-05-25 Du Pont Novel polyfluoro-substituted ketones and their preparation from polyfluoro acid fluorides
WO1998023363A1 (fr) 1996-11-28 1998-06-04 Solvay Fluor Und Derivate Gmbh Preparation de melanges homogenes de gaz comprenant du sf¿6?
WO2001005468A2 (fr) 1999-07-20 2001-01-25 3M Innovative Properties Company Utilisation de cetones fluorees dans des compositions ignifuges
WO2010142346A1 (fr) 2009-06-12 2010-12-16 Abb Technology Ag Milieu d'isolation diélectrique
WO2011090992A1 (fr) * 2010-01-25 2011-07-28 3M Innovative Properties Company Perfluorocétones utilisées en qualité de diélectriques gazeux

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185734A (en) 1960-10-25 1965-05-25 Du Pont Novel polyfluoro-substituted ketones and their preparation from polyfluoro acid fluorides
WO1998023363A1 (fr) 1996-11-28 1998-06-04 Solvay Fluor Und Derivate Gmbh Preparation de melanges homogenes de gaz comprenant du sf¿6?
WO2001005468A2 (fr) 1999-07-20 2001-01-25 3M Innovative Properties Company Utilisation de cetones fluorees dans des compositions ignifuges
WO2010142346A1 (fr) 2009-06-12 2010-12-16 Abb Technology Ag Milieu d'isolation diélectrique
WO2011090992A1 (fr) * 2010-01-25 2011-07-28 3M Innovative Properties Company Perfluorocétones utilisées en qualité de diélectriques gazeux

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016092115A1 (fr) * 2014-12-12 2016-06-16 Abb Technology Ag Appareil permettant la génération, la distribution et/ou l'utilisation d'énergie électrique et composant pour un appareil de ce type
US10818407B2 (en) 2014-12-12 2020-10-27 Abb Schweiz Ag Apparatus for the generation, distribution and/or usage of electrical energy and component for such an apparatus
EP3079157A1 (fr) * 2015-04-09 2016-10-12 Solvay SA Procédés d'isolation diélectrique de composants électriques actifs
EP3079156A1 (fr) * 2015-04-09 2016-10-12 Solvay SA Procédés d'isolation diélectrique de composants électriques actifs
WO2016162574A1 (fr) * 2015-04-09 2016-10-13 Solvay Sa Procédés pour isoler diélectriquement des parties électriques actives
WO2016162573A1 (fr) * 2015-04-09 2016-10-13 Solvay Sa Procédés d'isolation diélectrique de pièces actives électriques
WO2017093504A1 (fr) * 2015-12-04 2017-06-08 Solvay Sa Procédés pour isoler diélectriquement des éléments électriques actifs

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