EP3297013A1 - Appareil de commutation haute tension et installation de commutation comprenant un appareil de commutation haute tension et procede de production d'un appareil de commutation haute tension - Google Patents

Appareil de commutation haute tension et installation de commutation comprenant un appareil de commutation haute tension et procede de production d'un appareil de commutation haute tension Download PDF

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Publication number
EP3297013A1
EP3297013A1 EP16189599.0A EP16189599A EP3297013A1 EP 3297013 A1 EP3297013 A1 EP 3297013A1 EP 16189599 A EP16189599 A EP 16189599A EP 3297013 A1 EP3297013 A1 EP 3297013A1
Authority
EP
European Patent Office
Prior art keywords
plastic
cavity
switching device
voltage switching
contact element
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
EP16189599.0A
Other languages
German (de)
English (en)
Other versions
EP3297013B1 (fr
Inventor
Edenilson de Oliveira Hillmann
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.)
Rail Power Systems GmbH
Original Assignee
Rail Power Systems GmbH
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 Rail Power Systems GmbH filed Critical Rail Power Systems GmbH
Priority to EP16189599.0A priority Critical patent/EP3297013B1/fr
Priority to PCT/EP2017/073517 priority patent/WO2018054849A1/fr
Priority to US16/333,633 priority patent/US20190259553A1/en
Priority to CN201780057462.9A priority patent/CN109844893B/zh
Publication of EP3297013A1 publication Critical patent/EP3297013A1/fr
Application granted granted Critical
Publication of EP3297013B1 publication Critical patent/EP3297013B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings

Definitions

  • the invention relates to a high-voltage switching device with a vacuum interrupter chamber and a switchgear with a high-voltage switching device. Moreover, the invention relates to a method for producing a high-voltage switching device with a vacuum interrupter chamber.
  • switchgears In networks of electric power lines switchgears are used, with which the electrical energy is distributed. Switchgear units have switchgear that establish or disconnect an electrically conductive connection between electrical contacts. In high-voltage or medium-voltage networks, high-voltage switching devices are used that meet the electrical requirements for high voltages in high-voltage or medium-voltage networks. The voltages of the high-voltage networks are generally above 52 kV and the medium-voltage networks between 1kV and 52kV.
  • Switchgear with vacuum switching chamber are for example from the DE 31 12 776 A1 and DE 40 27 723 A1 known.
  • the known vacuum interrupters have a stationary contact element with a contact and a movable in the axial direction of the vacuum interrupter chamber contact element with a contact that is made the vacuum interrupter chamber extends. At the contact elements which form the current path conductor parts are connected.
  • the movable contact element is actuated by an actuating member which is sealed relative to the housing body of the switching device.
  • the drive of the actuator can be done with an electric drive unit.
  • the invention has for its object to provide a high-voltage switching device, which requires the formation of only a relatively short isolation distance and thus compared to the prior art has a more compact structure.
  • the invention is also based on the object to provide a switchgear, which is characterized by a particularly compact design.
  • Another object of the invention is to provide a method with which a high-voltage switching device with a particularly compact structure can be produced easily and inexpensively.
  • the high-voltage switching device has a one-piece or multi-part housing body, in which a vacuum interrupter chamber is provided.
  • the vacuum switching chamber has a stationary switching contact element and a movable in the axial direction switching contact element, wherein the movable switching contact element extends out of the vacuum interrupter chamber and is connected via an insulating body with a movable in the axial direction actuator.
  • the current path forming conductor parts are connected.
  • the movable switching contact element Under an actuator all means are understood with which the movable switching contact element can be moved axially to close the contacts or open.
  • the actuator may consist of one or more parts.
  • a cavity filled with an insulating liquid is formed in the housing body, wherein the movable body Switching contact element extends from the vacuum chamber into the cavity and in turn the actuating member extends from the filled with insulating liquid cavity.
  • the high-voltage switching device is characterized in that a sealing member sealing the actuating member relative to the housing body is provided in the cavity filled with insulating liquid.
  • a sealing arrangement is understood to mean all means with which a liquid-tight seal with respect to the housing body or parts of the housing body can take place.
  • An arrangement of the sealing arrangement within the cavity is understood to mean that at least the parts of the sealing arrangement which form a component which is essential for the sealing are arranged inside the cavity. This does not exclude that individual parts which are related to the sealing arrangement, can not be located outside the cavity, for example, may have an outwardly facing surface.
  • a preferred embodiment of the high-voltage switching device provides that the sealing arrangement has a bellows arranged in the cavity, which encloses the actuator extending from the liquid-filled chamber in order to seal the actuating member relative to the housing body. Since the bellows is a component of the sealing arrangement, which occupies a relatively large space, the switching device has a more compact structure than a switching device in which a bellows for sealing is disposed outside a chamber filled with insulating liquid or an insulating gas. Such a switching device is for example from the DE 31 13 776 A1 known.
  • the bellows can be placed at earth potential. Since the bellows is not in an air-filled space but within the chamber filled with insulation liquid, the risk of a rollover of parts of the switching device, which are at a high potential, is reduced. Therefore, the high-voltage switching device can be made compact.
  • a particularly preferred embodiment provides that the cavity is closed off with a cover which is sealed off from the housing body, for example with a removable plate, the one end of the bellows being sealed against the cover in a fluid-tight manner.
  • the closure of the cavity with a cover provides advantages for the manufacture of the high-voltage switching device.
  • the housing body comprises a plastic body which at least partially surrounds the liquid-filled cavity.
  • the plastic body may consist of one or more plastic elements which are interconnected.
  • the plastic body consists of several plastic elements that can be easily and inexpensively manufactured by injection molding and then can be connected together. Individual plastic elements can be inserted into each other and / or glued or welded together.
  • the electrical properties of the switching device can be improved, but also its manufacture can be simplified. Corners and edges of the lying within the plastic body or the plastic elements live conductive parts of the switching device, such as a movable conductor part, which is electrically connected to the movable contact element, cause a highly inhomogeneous electric field.
  • the plastic elements may have rounded corners and edges, and consist of an electrically conductive plastic, preferably with a conductive material, such as carbon offset. These plastic elements can assume the same potential as the live components. Consequently, the electric field becomes more homogeneous to the outside, so that field control takes place.
  • the housing body preferably comprises a potting body which at least partially surrounds the vacuum interrupter chamber and the plastic body. Since the plastic elements assume the same potential as the live components, is the less burdened from a potting compound, such as cast resin, existing outer shell of the housing body.
  • a particularly preferred embodiment of the plastic body comprises a first cup-shaped plastic element and a second cup-shaped plastic element, wherein the conductor parts forming the current path comprise a movable conductor part, which is electrically connected to the movable contact element.
  • the movable conductor part is arranged in the cavity and is at least partially enclosed by the first and second plastic element.
  • the corners and edges of the plastic body enclosing the movable conductor part and the corners and edges of the plastic elements are rounded and the plastic body or the plastic elements are made of an electrically conductive plastic, so that they can assume the same potential as the movable conductor part.
  • the plastic body comprises a cylindrical plastic element which at least partially surrounds the sealing arrangement.
  • This plastic element is preferably non-conductive and therefore can not carry any potential.
  • the plastic element can ensure the insulation between potential-carrying components and the actuator, which is at ground potential.
  • the plastic element has fins, so that the creepage distance is increased.
  • Cutting edges are preferably provided on the plastic body, wherein the housing body of the vacuum interrupter chamber, which can consist of metallic or ceramic materials, is at least partially enclosed by a material into which the cutting edges can cut when assembling the components.
  • the switchgear according to the invention has one or more switching devices according to the invention.
  • a high-voltage switching device can be produced easily and inexpensively, in which the movable switching contact element extends out of the vacuum interrupter chamber into a cavity filled with an insulating liquid.
  • the plastic elements of the plastic body serve, on the one hand, to prevent the potting compound from penetrating into the volume enclosed by the plastic elements during potting, for example with epoxy resin. This ensures that the components remain movable within the plastic elements. Since pressures greater than 1 bar can occur during potting, the mechanical strength of the plastic elements must be given. In order to prevent that can penetrate at the interfaces of the plastic elements casting resin, these can be plugged into each other and / or glued or welded together.
  • a casting mold which corresponds in shape and dimensions to the contour of the housing body of the switching device.
  • the vacuum interrupter chamber and the plastic body or the plastic elements are introduced. These plastic elements then form part of the casting mold.
  • the shape and dimensions of the plastic elements therefore determine the shape and dimensions of the housing body, in particular the parts of the housing body in which the vacuum interrupter chamber is located and in which the chamber to be filled with insulating liquid is formed.
  • the actuator and the insulating body and the sealing assembly and possibly other components are inserted into the cavity of the switching device and the cavity is filled with the insulating liquid, wherein the cavity is sealed with a cover which is sealed against the potting or plastic body.
  • the cover is sealed against the plastic body.
  • Fig. 1 shows the essential components of the invention of the high-voltage switching device
  • Fig. 2 only shows individual components of the switching device in an exploded view.
  • the corresponding parts are provided in the figures with the same reference numerals.
  • the high-voltage switching device has a housing body 1 consisting of several parts or components, which has a housing half 1A in the normal installation position and a lower housing half 1B.
  • a vacuum interrupter chamber 2 In the upper housing half 1A is a vacuum interrupter chamber 2 with a cylindrical housing 3, which receives an upper, fixed switching contact element 4 and a lower, movable switching contact element 5.
  • Both switching contact elements 4, 5 have plate-shaped contacts 4A, 5A, which are located within the housing 3 of the vacuum interrupter chamber 2. By closing or opening the contacts 4A, 5A, the current path closed or interrupted, ie the load current and the short-circuit current are switched.
  • a chamber 6 is formed, which is filled with an insulating liquid.
  • the shift contact element 5 displaceable in the axial direction of the vacuum interrupter chamber 2 has a shaft 5B which extends from the vacuum interrupter chamber into the chamber 6 filled with insulating fluid.
  • the shaft 5B of the movable switching contact element 5 is sealed vacuum-tight with respect to the housing 3 of the vacuum interrupter chamber 2 with a sealing arrangement, not shown.
  • the lower end of the shaft 5B is connected via an insulating body 7 to an actuator 8 which extends from the liquid-filled chamber. By actuating the actuating member 8, the movable switching contact element 5 can be moved axially, so that the contacts 4A, 5A are closed or opened.
  • the actuator 8 has an upper, hollow cylindrical portion 8A, which is located in the chamber 6 and a lower, pin-shaped portion 8B, which is longitudinally displaceably guided in the cylinder space of the upper portion and extending from the chamber 6.
  • the upper end portion of the lower portion 8B is supported on a compression spring 9 in the cylinder space of the upper portion 8A.
  • the upper portion 8A also shifts so that the movable switching contact member 5 is axially displaced.
  • the compression spring 9 serves to damp the shocks during the actuation of the actuating member 8.
  • the drive of the actuator 8 is effected with a drive unit, not shown, which moves the lower portion 8 B in the axial direction.
  • the actuator 8 is sealed against the housing body 1 with a sealing arrangement 10 liquid-tight.
  • the sealing assembly 10 has a bellows 11 which surrounds the upper portion 8A of the actuator 8, wherein the upper end of the bellows 11 is liquid-tightly connected to the upper portion 8A of the actuator 8.
  • the lower end of the bellows 11 is sealed against the housing body 1 liquid-tight.
  • the bellows 11 and the actuator 8 are on Ground potential laid.
  • the housing body 1 has an opening 23, which is closed by a cover 13 liquid-tight.
  • the liquid-filled chamber 6 has an upper and lower chamber half 6A, 6B in the installed position.
  • a movable conductor part 12 for example a copper strip, which is connected to the shaft 5B of the movable switching contact element 5.
  • the movable conductor part 12 is electrically connected to further conductor parts 13 forming the current path, which however are only partially shown.
  • the fixed switching contact element 4 is connected to further only partially illustrated conductor parts 14, which are also inserted into the housing body 1 or placed on the housing body.
  • the housing body 1 comprises a potting body 15 which encloses the vacuum interrupter chamber 2 and the liquid-filled chamber 6.
  • the potting body 1A forms the outer shell of the housing body 1.
  • the potting compound may be an epoxy resin.
  • a plastic body 16 which is composed of a plurality of plastic elements 16A, 16B, 16C.
  • Fig. 2 shows the plastic elements 16A, 16B, 16C in an exploded view.
  • the plastic body 16 has in the upper half of the chamber 6A an upper shell-shaped plastic element 16A and a lower, shell-shaped plastic elements 16B which surround the movable conductor part 12, and has in the lower chamber half 6B a cylindrical plastic element 16C which surrounds the bellows 11.
  • the plastic members 16A, 16B, 16C are formed so that they can be assembled properly. They are tightly inserted into each other and / or glued or welded together. All plastic elements 16A, 16B, 16C have rounded corners or edges.
  • the two plastic elements 16A, 16B in the upper chamber half 6A are made of an electrically conductive plastic, for example, the plastic may be mixed with conductive carbon. Since these plastic elements 16A, 16B can assume the same potential as the movable conductor part 12 or other conductor parts in the chamber, the electric field becomes more homogeneous to the outside.
  • the plastic element 16C in the lower chamber half 6B which is not made of a conductive plastic, can not conduct a potential.
  • This plastic element 6C is used for safe insulation of live parts in the chamber 6 with respect to the lying at ground potential actuator 8. To increase the creepage path, the plastic element 16C on the outside of fins 17.
  • the cover 13 of the housing body 1, which closes the liquid-filled chamber 6, is sealed in a liquid-tight manner with respect to the cylindrical plastic part 16C with a sealing ring 18 located between the cover and the plastic part.
  • a casting mold for the manufacture of the switching device, a casting mold, not shown in the figures is used, which is designed such that it corresponds to the shape and dimensions of the housing body 1 of the switching device and the shape and dimensions of the vacuum interrupter chamber 2 and the other components of the switching device.
  • the vacuum interrupter chamber 2 is used, wherein between the wall of the casting mold and the vacuum interrupter chamber 2, a gap 19 remains.
  • the plastic body 16 is used, wherein between the wall of the casting mold and the plastic body 16, a gap 20 remains.
  • the potting body 15 is created with the chamber 6 to be filled with insulating liquid.
  • the upper plastic element 16A in the upper chamber half 6A has at the upper edge cutting edges 21 which cut into a coating 3A of the housing 3 of the vacuum interrupter chamber 2, so that the potting compound, which has a relatively high viscosity in the liquid state, not under pressure Gap between the metallic or ceramic housing 3 of the vacuum interrupter chamber 2 and the plastic element 16 can penetrate.
  • the movable conductor part 12, the actuating member 8, the insulating body 7 and the sealing assembly 10 and optionally other components of the switching device are inserted into the space enclosed by the plastic part cavity and the cavity is filled with the insulating liquid. Then, the cavity is sealed liquid-tight by placing the cover 13.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Manufacture Of Switches (AREA)
EP16189599.0A 2016-09-20 2016-09-20 Appareil de commutation haute tension et installation de commutation comprenant un appareil de commutation haute tension et procede de production d'un appareil de commutation haute tension Active EP3297013B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16189599.0A EP3297013B1 (fr) 2016-09-20 2016-09-20 Appareil de commutation haute tension et installation de commutation comprenant un appareil de commutation haute tension et procede de production d'un appareil de commutation haute tension
PCT/EP2017/073517 WO2018054849A1 (fr) 2016-09-20 2017-09-18 Interrupteur haute tension et installation électrique muni d'un interrupteur haute tension, et procédé de fabrication d'un interrupteur haute tension
US16/333,633 US20190259553A1 (en) 2016-09-20 2017-09-18 High-Voltage Switching Device and Switchgear Comprising a High-Voltage Switching Device and Method for Producing a High-Voltage Switching Device
CN201780057462.9A CN109844893B (zh) 2016-09-20 2017-09-18 高压开关装置和带有高压开关装置的开关设备以及高压开关装置的制造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16189599.0A EP3297013B1 (fr) 2016-09-20 2016-09-20 Appareil de commutation haute tension et installation de commutation comprenant un appareil de commutation haute tension et procede de production d'un appareil de commutation haute tension

Publications (2)

Publication Number Publication Date
EP3297013A1 true EP3297013A1 (fr) 2018-03-21
EP3297013B1 EP3297013B1 (fr) 2020-04-22

Family

ID=56958829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16189599.0A Active EP3297013B1 (fr) 2016-09-20 2016-09-20 Appareil de commutation haute tension et installation de commutation comprenant un appareil de commutation haute tension et procede de production d'un appareil de commutation haute tension

Country Status (4)

Country Link
US (1) US20190259553A1 (fr)
EP (1) EP3297013B1 (fr)
CN (1) CN109844893B (fr)
WO (1) WO2018054849A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1590360A1 (de) * 1965-09-30 1970-04-16 English Electric Co Ltd Elektrische Schaltvorrichtung
DE2354632A1 (de) * 1972-11-01 1974-05-09 Meidensha Electric Mfg Co Ltd Elektrischer unterbrecher
DE2739811A1 (de) * 1977-09-03 1979-03-15 Wickmann Werke Gmbh Elektrische schaltvorrichtung fuer hoch- und niederspannung
DE3112776A1 (de) 1981-03-31 1982-10-28 Wickmann-Werke Böblingen GmbH, 7030 Böblingen Schaltvorrichtung mit einem vakuum-unterbrecher zwischen einer sammelschiene und einem kabelanschlussstutzen
DE3113776A1 (de) 1981-04-04 1982-10-28 Deutsche Babcock Ag, 4200 Oberhausen Verfahren und vorrichtung zum verbrennen eines brennstoffes
JPH01143112A (ja) * 1987-11-28 1989-06-05 Toshiba Corp 真空開閉器
DE4027723A1 (de) 1990-08-30 1991-01-10 Slamecka Ernst Vakuumschaltkammer fuer lasttrennschalter
JPH06203704A (ja) * 1993-01-11 1994-07-22 Mitsubishi Electric Corp 固体絶縁開閉装置
CN2736909Y (zh) * 2004-10-11 2005-10-26 西安交通大学 一种采用硅油作为绝缘介质的高压真空断路器
JP2008204865A (ja) * 2007-02-21 2008-09-04 Toshiba Corp 真空バルブ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0479117A (ja) * 1990-07-19 1992-03-12 Fuji Electric Co Ltd ガス絶縁開閉装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1590360A1 (de) * 1965-09-30 1970-04-16 English Electric Co Ltd Elektrische Schaltvorrichtung
DE2354632A1 (de) * 1972-11-01 1974-05-09 Meidensha Electric Mfg Co Ltd Elektrischer unterbrecher
DE2739811A1 (de) * 1977-09-03 1979-03-15 Wickmann Werke Gmbh Elektrische schaltvorrichtung fuer hoch- und niederspannung
DE3112776A1 (de) 1981-03-31 1982-10-28 Wickmann-Werke Böblingen GmbH, 7030 Böblingen Schaltvorrichtung mit einem vakuum-unterbrecher zwischen einer sammelschiene und einem kabelanschlussstutzen
DE3113776A1 (de) 1981-04-04 1982-10-28 Deutsche Babcock Ag, 4200 Oberhausen Verfahren und vorrichtung zum verbrennen eines brennstoffes
JPH01143112A (ja) * 1987-11-28 1989-06-05 Toshiba Corp 真空開閉器
DE4027723A1 (de) 1990-08-30 1991-01-10 Slamecka Ernst Vakuumschaltkammer fuer lasttrennschalter
JPH06203704A (ja) * 1993-01-11 1994-07-22 Mitsubishi Electric Corp 固体絶縁開閉装置
CN2736909Y (zh) * 2004-10-11 2005-10-26 西安交通大学 一种采用硅油作为绝缘介质的高压真空断路器
JP2008204865A (ja) * 2007-02-21 2008-09-04 Toshiba Corp 真空バルブ

Also Published As

Publication number Publication date
CN109844893A (zh) 2019-06-04
US20190259553A1 (en) 2019-08-22
WO2018054849A1 (fr) 2018-03-29
CN109844893B (zh) 2022-03-11
EP3297013B1 (fr) 2020-04-22

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