EP3469611B1 - Système de contact pour appareil de commutation haute tension, son utilisation et sa fabrication - Google Patents

Système de contact pour appareil de commutation haute tension, son utilisation et sa fabrication Download PDF

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Publication number
EP3469611B1
EP3469611B1 EP17739934.2A EP17739934A EP3469611B1 EP 3469611 B1 EP3469611 B1 EP 3469611B1 EP 17739934 A EP17739934 A EP 17739934A EP 3469611 B1 EP3469611 B1 EP 3469611B1
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EP
European Patent Office
Prior art keywords
contact
elements
shaped
assembly
pair
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.)
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EP17739934.2A
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German (de)
English (en)
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EP3469611A1 (fr
Inventor
Matthias HURNICKI
Mariusz ROHMANN
Bernd RÄTH
Dirk SCHRÄDER
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.)
Siemens Energy Global GmbH and Co KG
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Siemens Energy Global GmbH and Co KG
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Publication date
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Priority to PL17739934T priority Critical patent/PL3469611T3/pl
Publication of EP3469611A1 publication Critical patent/EP3469611A1/fr
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Publication of EP3469611B1 publication Critical patent/EP3469611B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2025—Bridging contacts comprising two-parallel bridges
    • H01H2001/2033—Bridging contacts comprising two-parallel bridges with a contact bridge on both opposite sides of a fixed contact pair, each contact bridge being moved to close or open the circuit

Definitions

  • the invention relates to a contact arrangement for a high-voltage switching device and its use and manufacture.
  • the contact arrangement comprises at least one movable contact arm, with at least two contact elements for electrically contacting a mating contact piece, the at least two contact elements being arranged opposite each other and forming a pair of contact fingers and the contact elements being U-shaped, with the openings of the U-shape the contact elements of a contact finger pair are arranged facing each other.
  • High-voltage switching devices such as B. from the US 3,339,037A known, are used for switching high voltages and currents, especially in the range from 70 to 800 kV.
  • High-voltage switching devices are z. B. grounding switches and circuit breakers, in particular rotary disconnectors, toggle disconnectors, or single swing disconnectors.
  • a current path is separated at at least one contact with an isolating distance, which z. B. depends on the applied voltage.
  • An electrical contact comprises a contact arrangement which has at least one contact element and at least one mating contact piece.
  • the at least one contact element and the at least one mating contact piece are in electrical and, in particular, mechanical contact with one another.
  • the at least one contact element and the at least one mating contact piece are arranged at a distance from one another at which no electrical flashovers or arcing occur.
  • the at least one contact element When the current path is opened, the at least one contact element is moved relative to the associated mating contact piece.
  • the mating contact piece can be spatially fixed, d. H. be designed as a fixed contact.
  • the at least one contact element is designed as a contact arm or is attached to a contact arm, in particular in an electrically conductive manner.
  • the contact arm is moved via a drive and/or a gear, in particular controlled, e.g. B. to visualize a separate current path and thus the switched-off state to the outside.
  • a rotary disconnector z. B. the movement as a rotational movement of the contact arm about an axis in particular perpendicular to the longitudinal axis of the contact arm.
  • an isolating distance is created between the at least one contact element and the associated mating contact piece when it opens. Electrical contact and possible current flow are prevented.
  • the contact arm When switching on the high-voltage switching device, ie connecting the current path, the contact arm is moved, in particular rotated, in such a way that the at least one contact element comes into mechanical and electrical contact with the associated mating contact piece. An electrically conductive connection is visible from the outside and the high-voltage switching device is switched on.
  • Weather influences such as wind and ice formation can change the position of a contact arm to the mating contact piece, and lead to a deterioration in the electrical contact. This can result in high electrical losses or, in extreme cases, the high-voltage switching device can be electrically disconnected in an uncontrolled manner.
  • the document DE 10 59 081 B discloses a contact arrangement according to the preamble of claim 1.
  • the object of the present invention is to avoid or
  • a contact arrangement for a high-voltage switching device and its use and manufacture which enables good and reliable contact that is stable over time between at least one contact element and a mating contact piece when the high-voltage switching device is switched on, with low power loss. Costs associated with high power losses are to be avoided and damage in a power supply system which is connected to the high-voltage switching device is to be avoided by the contact arrangement according to the invention.
  • the contact arrangement should be simple and inexpensive to produce and easy to assemble.
  • the contact arrangement should be versatile, in particular by using the standardization.
  • the specified object is achieved according to the invention by a contact arrangement for a high-voltage switching device having the features according to patent claim 1 and/or by using the contact arrangement according to patent claim 7 and by a method for producing the contact arrangement according to patent claim 11 .
  • Advantageous configurations of the contact arrangement according to the invention for a high-voltage switching device and/or the use of the contact arrangement and the method for producing the contact arrangement are specified in the dependent claims. Subjects of the main claims can be combined with one another and with features of the subclaims and features of the subclaims with one another.
  • a contact arrangement according to the invention for a high-voltage switching device comprises at least one movable contact arm with at least two contact elements for electrically contacting a counter-contact piece. Two contact elements are arranged opposite each other and form a pair of contact fingers.
  • the use of at least two opposing contact elements, which form a pair of contact fingers, enables contact that is stable over time between the contact elements and the mating contact piece when the high-voltage switching device is switched on.
  • the power loss and associated costs are minimized, and damage to the power grid connected to the high-voltage switching device is avoided.
  • the contact elements are U-shaped, with the openings of the U-shape of the contact elements of a contact finger pair being arranged in particular facing one another.
  • the contact elements each form two contact surfaces at the ends of the U-shape, are mechanically stable and can be easily integrated into the contact arm or attached to it in a mechanically stable and electrically conductive manner.
  • the contact elements are rod-shaped, with a U-shaped cross section, opposite legs of the U-shape having the same length L.
  • the mating contact piece can be mechanically clamped by the U-shaped contact elements, resulting in good temporal and mechanical stability of the electrical contact between the mating contact piece and the contact elements is achieved.
  • Four contact surfaces are formed with the mating contact piece by two U-shaped contact elements, which ensure good electrical contact with minimized power loss.
  • Edges and corners of the contact elements can be rounded, in particular all edges and corners, each with a radius corresponding to the position on the contact element. This avoids or at least reduces corona phenomena and possible voltage flashovers at edges and corners.
  • the contact arm comprises at least one pair of profile bars, which at least partially encloses at least one pair of contact fingers. This keeps the pair of contact fingers mechanically stable. Arranged with a mating contact piece between the pair of contact fingers, when the high-voltage switching device is switched on, the pair of contact fingers can be pressed against the mating contact piece via the pair of profile rods, from opposite sides. The mating contact piece is clamped between the contact fingers of the contact finger pair and there is good mechanical and electrical contact between the contact finger pair and the mating contact piece, with electrical contact being made with the profile rod pair, d. H. across the contact arm.
  • the contact elements can have bores for fastening elements.
  • the contact elements can each be fastened in an electrically conductive manner to a profile rod with at least one fastening element, in particular via at least one screw and/or nut and/or spaced apart from the profile rod via a washer.
  • the contact elements can be made of copper or include copper as the material, in which case the contact elements can be silver-plated in particular. Copper, and particularly silver-plated copper, are good electrical conductors and can make good electrical contact.
  • At least one mating contact piece can be included in the contact arrangement, in particular at least one fixed contact, which includes a plate-shaped contact element, wherein the plate-shaped contact element can be made of copper or can include copper as a material, in particular silver-plated on a contact surface.
  • the plate-shaped contact element In a closed state of the high-voltage switching device, the plate-shaped contact element can be clamped by at least one pair of contact fingers, in particular with good electrical contact between the at least one pair of contact fingers and the clamped plate-shaped contact element.
  • a contact element When the high-voltage switching device is in the closed state, a contact element can form two contact surfaces with the associated mating contact piece, in particular with a size of the contact surfaces that can depend on the length of the contact element. As a result, the design or dimensioning of the high-voltage switching device for specific current values can be carried out via the length of the contact element. Two contact surfaces instead of one increase the reliability of the contact when the high-voltage switching device is closed, even with e.g. B. unwanted movements of the contact arm by z. B. Environmental influences such as wind and / or ice.
  • the at least one movable contact arm can have a number of contact finger pairs, depending on the rated current and/or short-circuit current of the high-voltage switching device.
  • the at least one movable contact arm can in particular have one, two, three or more pairs of contact fingers. This allows the number of contact finger pairs Design and dimensioning of the high-voltage switching device for specific current values.
  • a use of the contact arrangement according to the invention includes use of the contact arrangement in a high-voltage disconnector, in particular in a rotary disconnector, or in a lever disconnector, in particular toggle disconnector, or in a single or double pivoting disconnector as a high-voltage switching device, or a Use of the contact arrangement in a high-voltage earthing switch as a high-voltage switching device.
  • a switching device of the type of a horizontal switching device or of the type of a vertical switching device can be used as the high-voltage switching device.
  • the at least one contact element in particular all contact elements, can be in electrical and/or mechanical contact with at least one, in particular all of the associated counter-contact pieces of the high-voltage switching device.
  • a mating contact piece in particular designed as a fixed contact, can be clamped between at least two opposite contact elements, which are each designed with a U-shaped profile and are arranged on opposite, movable profile rods, in particular by at least one spring element, in particular in operative connection with at least one spacer element.
  • a method according to the invention for producing a contact arrangement comprises that the contact elements are produced from bent sheet metal parts and/or U-shaped semi-finished products and/or by milling a groove in a bar material in a U-shape, and/or that the contact elements be attached in an electrically conductive manner in U-shaped profile bars, in particular by screwing, riveting, soldering, welding and/or gluing in opposite profile bars, the openings in the U-shape of a pair of profile bars and the openings in the U-shape of a pair of contact elements respectively be arranged facing each other.
  • FIGS Figures 1 to 4 shown and described in more detail below.
  • FIG 1 the front of a contact arrangement 1 according to the invention for a high-voltage switching device with three pairs of contact fingers 4 is shown schematically in an oblique view.
  • Each pair of contact fingers 4 is surrounded by a pair of profiled rods 11 .
  • the pairs of profile bars 11 with the associated pairs of contact fingers 4 form a contact arm 2 of the high-voltage switching device.
  • Each contact finger pair 4 consists of two contact elements 3 which are U-shaped in profile, ie in cross section.
  • the two U-shaped contact elements 3 are arranged opposite one another in such a way that the open sides of the U-shape point towards one another.
  • Each profile bar pair 11 consists of two profile bars 6, which in profile, d. H. are also U-shaped in cross section.
  • the two U-shaped profile bars 6 are arranged opposite one another in such a way that the open sides of the U-shape point towards one another.
  • the profile bars 6 have a greater width than the contact elements 3 .
  • a contact element 3 is arranged at the end along the longitudinal axis of the profile bar 6 parallel to the profile bar 6, fitted into the U-shaped opening and z. B. via a spacer such. B. a washer 16 spaced from the profile bar 6 attached.
  • the opening of the U-shape of the profile bar 6 and the opening of the U-shape of the associated contact element 3, which is located in the profile bar 6, point in the same direction.
  • the contact elements 3 are each attached to the associated profile bar 6 via fasteners 13, such as. B. screws 14 with nuts 15 attached. Washers 16 can be arranged as spacers between the contact element 3 and the profile bar 6, alternatively, for the sake of simplicity not shown in the figures, the contact elements 3 can also be arranged resting directly on the profile bar 6 .
  • each contact element 3 via two fasteners 13, ie two screws 14, each with a nut 15 and a washer 16 between the contact element 3 and the profile bar 6, on the associated profile bar 6 electrically conductive, mechanically attached.
  • Spring elements 19 can be provided on the profile bar 6 in order to press or push spaced, opposite profile bars 3, and thus the spaced, opposite contact elements 3 fastened in them, towards one another.
  • FIG 2 is the contact arrangement 1 of 1 schematic, shown in side view.
  • the contact arm 2 with the included profile bars 6 and contact elements 3, is in electrical and mechanical contact with a plate-shaped contact element 18 of a counter-contact piece 17.
  • the contact elements 3 on the profile bars 6 form an electrical contact in cooperation with the counter-contact piece 17.
  • the plate-shaped contact element 18 of the mating contact piece 17 is clamped by the pairs of profiled rods 11 with the associated pairs of contact fingers 4 .
  • Two profile rods 6 in each case clamp the plate-shaped contact element 18 arranged between them in a mechanically stable manner via the contact elements 3 and form a good electrical contact between the mating contact piece 17 and the contact arm 2 .
  • the spring elements 19 press the profile rods 6 of a pair of profile rods 11 and the contact elements 3 of a contact finger pair 4 attached thereto, and thus clamp the plate-shaped contact element 18 located between them like pliers.
  • the contact finger pairs 4 can be pressed together more by the spring elements 19 at the end of the contact arm 2, i. H. the contact elements 3 of a contact finger pair 4 are at a smaller distance from one another, in particular compared to the thickness of the plate-shaped contact element 18.
  • the high-voltage switching device is moved from an open to a closed, ie contacted state.
  • the plate-shaped contact element 18 of the mating contact piece 17 is pushed between the opposing contact elements 3 of the contact finger pairs 4 or the contact arm 2 pushes the contact elements 3 over and under the plate-shaped contact element 18.
  • the contact pressure of the spring elements 19 results in a mechanically and electrically stable contact between the contact elements 3 of the contact arm 2 and the plate-shaped contact element 18 of the mating contact piece 17.
  • the contact arm 2 is rotated in the opposite direction around the vertical axis.
  • the plate-shaped contact element 18 of the mating contact piece 17 is pushed out of the space between the opposing contact elements 3 of the contact finger pairs 4 or the contact arm 2 pushes the contact elements 3 into a position at a distance from the plate-shaped contact element 18.
  • the contact pressure of the spring elements 19 moves the contact elements 3 of a contact finger pair 4 further towards one another and the spacer element 20 keeps the contact elements 3 at a minimum distance.
  • FIG 3 is a contact element 3 of the contact arrangement 1 of figures 1 and 2 shown in detail schematically in supervision.
  • the U-shaped contact element 3 is shown with the opening of the U-shape facing upwards.
  • the contact element 3 is rail- or rod-shaped, with two legs 5 of the U-shape on the right and left side parallel to each other and parallel and along the longitudinal axis of the contact element 3.
  • the corners 10 can be rounded to avoid corona phenomena on pointed shapes to avoid.
  • FIG 4 is the contact element 3 of figure 3 shown in detail schematically in cross section, perpendicular to the longitudinal axis.
  • the U-shape is substantially in the form of a rectangle cut in half, cut along a parallel to one side of the rectangle, with rounded corners and edges 7,8,9.
  • the legs 5 are perpendicular to the central part 21 of the contact element 3, one leg 5 on the right and left side of the contact element 3 viewed along the cross section.
  • the legs 5 are arranged parallel to one another, designed as parallel plates, with rounded inner and outer edges 7, 8 in the area of the transition to the central part 21 and rounded edges 9 at the upper end of the leg.
  • the legs 5 of a contact element 3 are of equal length with leg length L, ie the length L of the legs 5 in cross section.
  • Contact elements 3 can, for. B. from highly conductive metals such as copper, aluminum or steel or alloys of these metals and with coatings such. B. silver, for good electrical contact.
  • profile bars 6 and mating contact pieces 17 z. B. from highly conductive metals such as copper, aluminum or steel or alloys of these metals and with coatings such.
  • B. silver in particular partially in certain areas, for good electrical contact and high mechanical stability.
  • bolts can also be used as fastening elements 13, or a fastening can, for.
  • contact elements 3 can also have shapes such as a V-shape or U-shape, with a semi-circular central part 21 between the legs 5 of the U-shape. More than one spring element 19 and/or spacer element 20 can be included per pair of profile rods 11 .
  • the number of pairs of profile bars 11 with pairs of contact fingers 4 can be adapted to the application area of the high-voltage switching device, in particular with regard to the current-carrying capacity and/or the short-circuit current strength.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Contacts (AREA)

Claims (11)

  1. Système (1) de contact d'un appareil de coupure en haute-tension, comprenant au moins un bras (2) de contact mobile, qui comprend au moins deux éléments (3) de contact pour la mise en contact électrique d'une pièce (17) de contact antagoniste, dans lequel les au moins deux éléments (3) de contact sont disposés respectivement en face l'un de l'autre et forment une paire (4) de doigts de contact et les éléments (3) de contact sont en forme de U, dans lequel les ouvertures de la forme en U des éléments (3) de contact de la paire (4) de doigts de contact sont tournées l'une vers l'autre,
    caractérisé en ce que
    les éléments (3) de contact sont en forme de barreau, en ayant une section transversale en forme de U, dans lequel des branches se faisant face de la forme en U ont la même longueur (L) et le bras (2) de contact comprend au moins une paire (11) de barres profilées, qui entourent au moins en partie la paire (4) de doigts de contact.
  2. Système (1) de contact suivant la revendication 1,
    caractérisé en ce que
    les éléments (3) de contact ont des trous (12) pour des éléments (13) de fixation et/ou en ce que les éléments (3) de contact sont fixés d'une manière conductrice de l'électricité par au moins un élément (13) de fixation respectivement à une barre (6) profilée de la paire (11) de barres profilées, notamment par au moins une vis (14) et/ou un écrou (15) et/ou sont mis à distance des barres (6) profilées de la paire (11) de barres profilées par une rondelle (16).
  3. Système (1) de contact suivant l'une des revendications précédentes,
    caractérisé en ce que
    les éléments (3) de contact sont en cuivre ou comprennent du cuivre comme matériau, les éléments (3) de contact étant notamment argentés.
  4. Système (1) de contact suivant l'une des revendications précédentes,
    caractérisé en ce que
    le système (1) de contact comprend au moins une pièce (17) de contact antagoniste, notamment au moins un contact fixe, qui comprend un élément (18) de contact en forme de plaque, dans lequel l'élément (18) de contact en forme de plaque est en cuivre ou comprend du cuivre comme matériau, en étant notamment argenté sur une surface de contact, et/ou en ce que l'élément (18) de contact en forme de plaque est, dans un état fermé du système (1) de contact, serré par la paire (4) de doigts de contact du au moins un bras (2) de contact mobile.
  5. Système (1) de contact suivant la revendication 4,
    caractérisé en ce que
    un élément (3) de contact forme respectivement avec la pièce (17) de contact antagoniste associée, à l'état fermé du système (1) de contact, deux surfaces de contact, en ayant notamment une dimension des surfaces de contact, qui dépend de la longueur de l'élément (3) de contact.
  6. Système (1) de contact suivant l'une des revendications précédentes,
    caractérisé en ce que
    le au moins un bras (2) de contact mobile a respectivement deux, trois paires (4) de doigts de contact ou plus.
  7. Utilisation d'un système (1) de contact suivant l'une des revendications précédentes,
    caractérisé en ce que
    le système (1) de contact est utilisé dans un sectionneur en haute tension, notamment dans un sectionneur à coupure centrale, ou dans un sectionneur à levier, notamment dans un sectionneur à levier coudé, ou dans un sectionneur pivotant une fois ou deux fois comme appareil de coupure en haute tension ou en ce que le système (1) de contact est utilisé dans un sectionneur à la terre en haute tension comme appareil de coupure en haute tension.
  8. Utilisation suivant la revendication 7,
    caractérisé en ce que
    on utilise comme appareil de coupure en haute tension un appareil de coupure à la façon d'un appareil de coupure horizontal ou d'un appareil de coupure vertical.
  9. Utilisation suivant l'une des revendications 7 ou 8,
    caractérisé en ce que,
    pour une voie de courant fermée de l'appareil de coupure en haute tension, le au moins un élément (3) de contact, notamment tous les éléments (3) de contact, sont en contact électrique et/ou mécanique avec au moins une, notamment toutes les pièces (17) de contact antagonistes associées respectivement, de l'appareil de coupure en haute tension.
  10. Utilisation suivant la revendication 9,
    caractérisé en ce que,
    pour une voie de courant fermée de l'appareil de coupure de haute tension, respectivement la pièce (17) de contact antagoniste, constituée notamment sous la forme d'un contact fixe, est serrée entre les au moins deux éléments (3) de contact se faisant face, qui sont constitués chacun d'un profilé en forme de U et qui sont disposés sur les barres (6) profilées mobiles se faisant face, en étant serrée par au moins un élément (19) de ressort, notamment en liaison de coopération avec au moins un élément (20) d'entretoisement.
  11. Procédé de fabrication d'un système (1) de contact suivant l'une des revendications 1 à 6,
    caractérisé en ce que
    on produit en forme de U des éléments (3) de contact en pièces de tôle pliée et/ou en demi-produit en forme de U et/ou par fraisage d'une rainure dans un matériau en barre et/ou en ce que l'on fixe d'une manière conductrice de l'électricité les éléments (3) de contact dans des barres profilées en forme de U, notamment par vissage, brasage, soudage et/ou collage dans des barres profilées se faisant face, les ouvertures de la forme en U des barres profilées de la paire (11) de barres profilées, ainsi que les ouvertures de la forme en U des éléments de contact de la paire (4) de doigts de contact étant respectivement tournées l'une vers l'autre.
EP17739934.2A 2016-08-03 2017-07-06 Système de contact pour appareil de commutation haute tension, son utilisation et sa fabrication Active EP3469611B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17739934T PL3469611T3 (pl) 2016-08-03 2017-07-06 Układ stykowy dla łącznika wysokiego napięcia oraz jego zastosowanie i wytwarzanie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016214368.9A DE102016214368B4 (de) 2016-08-03 2016-08-03 Kontaktanordnung für ein Hochspannungs-Schaltgerät sowie dessen Verwendung und Herstellung
PCT/EP2017/067014 WO2018024438A1 (fr) 2016-08-03 2017-07-06 Système de contact pour appareil de commutation haute tension, son utilisation et sa fabrication

Publications (2)

Publication Number Publication Date
EP3469611A1 EP3469611A1 (fr) 2019-04-17
EP3469611B1 true EP3469611B1 (fr) 2022-02-23

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EP (1) EP3469611B1 (fr)
CN (1) CN109564830B (fr)
DE (1) DE102016214368B4 (fr)
PL (1) PL3469611T3 (fr)
WO (1) WO2018024438A1 (fr)

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DE102018213028B4 (de) * 2018-08-03 2020-07-02 Siemens Aktiengesellschaft Trennschalter mit zwei relativ zueinander bewegbaren Kontaktteilen

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DE1059081B (de) * 1957-04-30 1959-06-11 Wickmann Werke Ag Doppeltrennmesser fuer Schaltgeraete
DE1169546B (de) * 1960-01-13 1964-05-06 Driescher Spezialfab Fritz Hochspannungs-Trennschalter mit einem einstellbaren Betaetigungsisolator
DE1640997B1 (de) * 1967-12-23 1971-06-03 Licentia Gmbh Erdungs- und Kurzschliessvorrichtung fuer elektrische Schaltanlagen
CN105788943A (zh) * 2016-05-17 2016-07-20 国网山东省电力公司济南市长清区供电公司 一种隔离开关静触头

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CN109564830B (zh) 2020-11-20
WO2018024438A1 (fr) 2018-02-08
CN109564830A (zh) 2019-04-02
PL3469611T3 (pl) 2022-06-20
DE102016214368B4 (de) 2018-10-25
EP3469611A1 (fr) 2019-04-17
DE102016214368A1 (de) 2018-02-08

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