EP3226276A1 - Trennschalter, der an mittel- und hochspannungen angepasst ist, und abschaltmethode mithilfe dieses trennschalters - Google Patents

Trennschalter, der an mittel- und hochspannungen angepasst ist, und abschaltmethode mithilfe dieses trennschalters Download PDF

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Publication number
EP3226276A1
EP3226276A1 EP16290056.7A EP16290056A EP3226276A1 EP 3226276 A1 EP3226276 A1 EP 3226276A1 EP 16290056 A EP16290056 A EP 16290056A EP 3226276 A1 EP3226276 A1 EP 3226276A1
Authority
EP
European Patent Office
Prior art keywords
contact
head
displacement
support
disconnector
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
EP16290056.7A
Other languages
English (en)
French (fr)
Other versions
EP3226276B1 (de
Inventor
Thierry Faure-Curt
Thierry Millet
Pascal Russi
Sylvain Verger
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
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP16290056.7A priority Critical patent/EP3226276B1/de
Priority to KR1020187031024A priority patent/KR102056437B1/ko
Priority to PCT/EP2017/052689 priority patent/WO2017167480A1/fr
Priority to CN201780021295.2A priority patent/CN108885957B/zh
Publication of EP3226276A1 publication Critical patent/EP3226276A1/de
Application granted granted Critical
Publication of EP3226276B1 publication Critical patent/EP3226276B1/de
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
    • 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
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • 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
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor

Definitions

  • the present invention relates to a disconnector adapted to medium and high voltages (typically between 1kV and 550kV, or even higher than 550kV), and a disconnection method according to independent claims 1 and 15.
  • medium and high voltages typically between 1kV and 550kV, or even higher than 550kV
  • a function of the disconnector installations is to be able to connect, but above all to disconnect electrical connection elements which are generally enclosed in an enclosure filled with an insulating medium, such as sulfur hexafluoride, intended to limit the creation of arcing during the connection / disconnection of said electrical connection elements.
  • Such installations are, for example, metal insulated switchgear (GIS) type metal-wrapped substations.
  • GIS metal insulated switchgear
  • a disconnector comprises a connector or movable main contact to be inserted into or removed from a fixed main connector or contact.
  • One of these solutions is to couple said movable main contact to a movable arcing contact, the latter being intended to be inserted into or removed from a fixed arcing contact integral with said fixed contact.
  • the fixed main contact and the fixed arcing contact are connected to a first electrical apparatus, and the movable contact and moving arcing contact are connected to a second electrical apparatus.
  • the contacting of the main contacts and the arcing contacts closes the electrical circuit connecting the first and second electrical equipment.
  • the separation of said contacts opens said circuit and disconnects the first electrical equipment of the second electrical equipment.
  • the arcing contacts are used to delay the moment of appearance of an electric arc with respect to the moment of disconnection of the main contacts and to limit the duration of such an arc, in particular in order to reduce wear.
  • said moving arc contact is coupled to the movable main contact by a displacement device, typically a spring device, allowing on the one hand a disconnection of the arcing contacts taking place after disconnection of the main contacts, and secondly, a sudden acceleration of the moving arcing contact to instantly increase the spacing between the fixed arcing contact and the movable arcing contact when the main contacts (fixed and mobile) are already disconnected and progressively relative distance at constant speed during a disconnection phase, ie opening of the electrical circuit connecting the first electrical apparatus to said second electrical equipment.
  • the movable arcing contact is positioned in a chamber within said movable main contact, the latter being at a final disconnection position.
  • Another solution is to use a special material, such as carbon or copper-tungsten, for the movable main contact which in this case also has the arc contact function. Unlike the previous solution, a single moving contact is therefore present in the disconnector.
  • a problem of the disconnectors as described above is related to their use for higher voltages and currents that require higher opening speeds, difficult to achieve, for example due to the inertia of moving parts. Indeed, the higher the tension and the nominal current are high, the higher the transfer voltage (BTV) and the transfer current (BTC), and the faster the separation rate of the contacts.
  • An object of the present invention is to provide a disconnector adapted to high voltages and a disconnection method that increases the relative speed of removal of the main contacts so as to interrupt as quickly as possible the electric arc formed between said main contacts during the disconnection of the first and second electrical equipment, ie opening of the electrical circuit connecting said first electrical equipment to said second electrical equipment, while maintaining high dielectric performance for said main contacts, said disconnector to be more simple and effective .
  • Another object is to provide a disconnector requiring a small number of mechanical parts for optimizing the masses of moving elements, size and disconnect speeds for said disconnector.
  • the figure 1 shows an embodiment of a disconnector according to the invention. The latter is shown in the closed position.
  • the Figures 2 to 6 show the same disconnector at different times when it opens. The same references apply to the same elements of the disconnector throughout its opening illustrated by the Figures 2 to 6 .
  • the disconnector according to the invention makes it possible to connect a first electrical equipment to a second electrical equipment when it is in the closed position as presented in FIG. figure 1 and disconnecting said first electrical equipment from said second electrical equipment when in the open position as presented in FIG. figure 6 .
  • the disconnector, said first electrical equipment and said second electrical equipment are typically encapsulated in an interrupting chamber comprising an insulating medium such as sulfur hexafluoride, said first electrical equipment being for example located at an upstream end of said disconnector and said second electrical equipment being located for example at a downstream end of said disconnector.
  • an insulating medium such as sulfur hexafluoride
  • the disconnector according to the invention comprises in particular a first contact 1 connectable to the first electrical equipment and a second contact 2 connectable to said second electrical equipment.
  • the first contact 1 comprises at least one fixed part 1 ', ie immobile with respect to the interrupting chamber, and may optionally also comprise a mobile part 11 with respect to said fixed part 1'.
  • the second contact 2 comprises a mobile part and a fixed part 2 '.
  • the fixed part 2 'of the second contact 2 is sufficiently far away from the first contact 1 to prevent any electric arc between the first contact and the second contact.
  • the moving part of the second contact 2 comprises a contact body 21 and a contact head 22 mounted movably between a position A and a position B defined with respect to the contact body 21.
  • An electrical contact 29 between the contact head 22 and the contact body 21, for example a sliding electrical contact, allows in particular the passage of current between the contact head and the contact body.
  • the position A is in particular a remote position, for example the farthest, of said contact body 21, and the position B is a close position, for example the closest, of said contact body 21.
  • the contact body 21 is it -even movably mounted along an axis A between a closed position F and an open position O.
  • said contact body 21 and the contact head 22 are in contact with said first contact 1 in order to connect electrically the fixed part 1 'of the first contact 1 with the fixed part 2' of the second contact 2, or in other words the first electrical equipment with the second electrical equipment, the contact head 22 being in position B when the contact body 21 is in closed position.
  • said contact body 21 and the contact head 22 are disconnected from said first contact 1 in order to electrically disconnect from each other the fixed part 1 'of the first contact 1 and the fixed part 2' of the second contact 2, or in other words, said first electrical equipment of said second electrical equipment, the contact head 22 being in position B when the contact body 21 is in the open position.
  • the contact body 21 terminates, both in the open position 0 and in the closed position F, by said contact head 22 mounted to move at one end of said contact body 21, the other end of said body contact 21 being fixed to a contact support 23.
  • the contact head 22 is slidably mounted with respect to the contact body 21 so as to be able to slide between the position A remote from said contact body 21 and the close position B said contact body 21, and vice versa.
  • the contact head 22 faces said first contact 1, so that a front view of the contact body 21 equipped with the contact head mounted on the latter only makes the contact head 22 appear.
  • said contact body 21 comprises a front part against which the contact head 22 is pressed in the close-up position B, said front part being in particular completely covered by said contact head 22 when the latter is in position B so as to prevent frontal contact between the first contact 1 and the contact body 21, in particular between the contact body 21 and the mobile part 11 of the first contact 1 , the contact body 21 being configured to contact only laterally via its lateral part said first contact 1, for example its fixed contacts 1 ', for example by means of of lateral electrical contacts 12 integral with the fixed contacts 1 'of the first contact 1.
  • the contact support 23 is intended to support said contact body 21.
  • said contact body 21 and the contact support 23 are arranged in the extension of one another along said axis A and can have a substantially elongate shape extending along said axis A.
  • the contact support 23 comprises a first end and a second end, said first end being integral with said other end of said contact body 21 and said second end being axially remote from said contact body 21 along said axis A. 6.
  • said second end of the contact support 23 is configured to interact with a second displacement device in order to trigger a displacement of the contact head 22 such that will be described later.
  • the disconnector according to the invention comprises a first displacement device capable of displacing, preferably simultaneously, the moving part of the second contact 2 and / or the moving part of the first contact 1.
  • the first displacement device is capable of displacing the contact body 21 from the closed position F to the open position 0, and vice versa, at a speed V (t) as a function of time t.
  • a first moving device is known to those skilled in the art is does not require further explanation.
  • the second displacement device is thus capable, during a displacement of said contact body 21 from the closed position F to the open position 0, of temporarily holding, for example during a period of time Dt, the head of contact 22 in contact with said first contact 1 in particular by moving the latter from position B to position A relative to the contact body 21 (ie with respect to a frame linked to the contact body 21), while storing during this movement from position B to position A, ie during said period of time Dt, energy, then suddenly release, at the end of said displacement of the position B to the position A, or at the end of the period of time Dt, said energy stored in order to abruptly and transiently move said contact head 22 from position A to position B so as to break the electrical contact between the contact head 22 and said first contact 1, for example between the contact head and the moving part of said first contact .
  • said second displacement device makes it possible to move said contact head 22 at a speed V '(t)> V (t) during the transient movement of said position A to said position B, said displacement taking place during a time interval [t'1, t'2] included in the time interval [t1, t2] necessary for the displacement of said contact body 21 between said closed position F and said open position 0.
  • the triggering of the displacement of the contact head from the position A to the position B is implemented by interaction of the contact support 23 with said second displacement device.
  • a displacement, by said first displacement device, of the contact support 23 along said axis A in the opposite direction of said first contact 1 is able to cause an interaction of said contact support 23 with the locking system 25 causing a change in state of said blocking system 25 from first to second state, and a displacement, by said first displacement device, of the contact support 23 in a direction along said axis A approaching said first contact 1 being able to pass the blocking system 25 of the second to the first state.
  • said interaction is an interaction between a surface of said contact support 23 and said blocking system 25, for example between said surface and hooks 251 of said blocking system 25.
  • the locking system 25 locking comprises a hook 251 movable from a locking position to an unlocking position and vice versa, which, when the locking system 25 is in said first state, is positioned in the locking position adapted to block a displacement of said element 24 in a direction along said axis A away from said first contact 1, and, when the locking system 25 is in said second state, is positioned in the unlocking position adapted to allow movement of said member 24 in the direction according to said axis A away from said first contact.
  • the displacement of said hook 251 between its locking position and its unlocking position is caused by said interaction of said surface of said contact support 23 and a portion of said hook 251.
  • said hook 251 is provided with a wheel 252 configured to interact with an interaction surface S of said contact support 23, the interaction of said interaction surface S with said wheel 252 being able to cause a movement of said hook 251, in particular a pivoting around a ball joint 3 secured to a support base 4 of said disconnector, from said locking position to said position of unlocking, when said interaction surface S is in translation along said axis A by displacement of the contact support 23 in the direction along said axis A away from the first contact 1.
  • said contact support 23 comprises a first surface S1 of external support for said wheel 252, for example a cylindrical surface, and optionally a second surface S2 of external support for said wheel 252, for example a cylindrical surface, the first surface S1, and optionally the second surface S2, being formed of a set of line segments parallel to said axis A, said interaction surface S joining for example said first surface S1 by describing a bias with respect thereto.
  • the interaction surface S joins the first surface S1 to said second surface S2 by describing said bias with respect to said first and second surfaces, and therefore in particular with respect to said axis A.
  • the displacement of said wheel 252 on said bias of the interaction surface S causes a displacement of said hook 251 from the locking position to the unlocking position or vice versa in the direction of movement of said contact support 23 by said first moving device.
  • a displacement of a part of the locking system, for example the wheel of said hook, on the interaction surface of the contact support 23 causes a radial distance relative to said axis A which triggers the release of the blocking system, ie the transition from the first state to the second state.
  • the locking system 25 comprises biasing means, for example elastic or spring loaded, configured to exert a force or moment of force on said hook 251 so as to oppose a movement, by example by pivoting, said hook 251 from the locking position to said unlocking position.
  • said element 24 extends from one of its ends secured to the contact head 22 through the contact body 21 and the contact support 23 to the other end thereof axially distant from said contact head. 22 and configured to cooperate with the locking system.
  • said element 24 comprises at least one rod, preferably several rods, extending along said axis A beyond said second end of the contact support 23 and passing therethrough from one side to the other.
  • said rod ends at the end closest to said second end of said contact body 23, by a locking washer 28 adapted to interact with said locking means 25, for example with said hook 251.
  • the figure 1 shows the disconnector according to the invention in the closed position.
  • the current can pass from the fixed contact 2 'to the fixed contact 1'via mainly the contact body 21 and secondarily the contact head 22 in contact with the movable portion 11 of said second contact.
  • the mechanical system 26 is expanded, for example, a spring 261 of said mechanical system is expanded.
  • the locking system 25 is in particular already in the blocking position, ready to interact with the contact support 23 when the latter will move away in a direction opposite to said first contact 1.
  • a connection of said disconnector takes place simply in the reverse order, ie from the fourth phase to the first phase, until connection of said contact body 23 with the fixed part 1 'of the first contact.
  • the contact head 22 has a mushroom shape, ie has a substantially cylindrical trunk configured to slide in the contact body 21 and be attached to said element 24, said trunk being surmounted by a half-shaped cap. sphere or part of sphere whose center is directed towards the trunk, in particular towards the central longitudinal axis of said trunk.
  • the contact body 21 is preferably cylindrical, hollow around said axis A, to allow movement in translation of said element 24 and said trunk during movement along said axis A upstream downstream.
  • Said cap covers in particular completely the end of said contact body 21 which is closest to said first contact 1.
  • the movable portion 11 of said second contact has a shape complementary to said cap, for example has a concave shape.
  • the cap of said contact head has a concave shape and said movable portion 11 of said first contact 1 has a spherical shape.
  • the moving part of said first contact also comprises a movable contact head with respect to a contact body, the second displacement device being designed to move in the opposite direction and simultaneously the contact head 22 of the second contact. and the contact head of said first contact during an opening of said disconnector.
  • the present invention proposes a new design of a disconnector, for which only a portion of the moving contact is set in rapid motion, which has the advantage of greatly reducing the inertia, and allows to achieve speeds of opening much larger compared to existing techniques, all with little accumulation energy.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP16290056.7A 2016-03-31 2016-03-31 Trennschalter, der an mittel- und hochspannungen angepasst ist, und abschaltmethode mithilfe dieses trennschalters Active EP3226276B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP16290056.7A EP3226276B1 (de) 2016-03-31 2016-03-31 Trennschalter, der an mittel- und hochspannungen angepasst ist, und abschaltmethode mithilfe dieses trennschalters
KR1020187031024A KR102056437B1 (ko) 2016-03-31 2017-02-08 매체 및 고전압을 위한 단속기 및 상기 단속기에 의한 단속을 위한 방법
PCT/EP2017/052689 WO2017167480A1 (fr) 2016-03-31 2017-02-08 Sectionneur adapte aux moyennes et hautes tensions et methode de deconnexion au moyen dudit sectionneur
CN201780021295.2A CN108885957B (zh) 2016-03-31 2017-02-08 用于中高电压的隔离开关及借助所述隔离开关的断开方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16290056.7A EP3226276B1 (de) 2016-03-31 2016-03-31 Trennschalter, der an mittel- und hochspannungen angepasst ist, und abschaltmethode mithilfe dieses trennschalters

Publications (2)

Publication Number Publication Date
EP3226276A1 true EP3226276A1 (de) 2017-10-04
EP3226276B1 EP3226276B1 (de) 2021-03-10

Family

ID=55701894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16290056.7A Active EP3226276B1 (de) 2016-03-31 2016-03-31 Trennschalter, der an mittel- und hochspannungen angepasst ist, und abschaltmethode mithilfe dieses trennschalters

Country Status (4)

Country Link
EP (1) EP3226276B1 (de)
KR (1) KR102056437B1 (de)
CN (1) CN108885957B (de)
WO (1) WO2017167480A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021138366A1 (en) * 2019-12-31 2021-07-08 Southern States Llc High voltage electric power switch with carbon arcing electrodes and carbon dioxide dielectric gas

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348645A2 (de) * 1988-07-01 1990-01-03 Licentia Patent-Verwaltungs-GmbH Einrichtung zur raschen Ein-und Ausschaltung von kleinen Strömen für Trennschalter von V.I.S.
EP0500550A1 (de) * 1989-11-17 1992-09-02 Siemens Ag Trennschalter für metallgekapselte, druckgasisolierte hochspannungsschaltanlagen.
FR3001081A1 (fr) * 2013-01-14 2014-07-18 Alstom Technology Ltd Sectionneur a contact d'arc rotatif
EP2791957B1 (de) * 2011-12-14 2015-12-09 Alstom Technology Ltd Mobile fördereinheit für einen leistungsschalter mit einer feder zur beschleunigung der trennung von lichtbogenkontakten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9068608B2 (en) * 2009-09-17 2015-06-30 Gates Corporation Isolator decoupler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348645A2 (de) * 1988-07-01 1990-01-03 Licentia Patent-Verwaltungs-GmbH Einrichtung zur raschen Ein-und Ausschaltung von kleinen Strömen für Trennschalter von V.I.S.
EP0500550A1 (de) * 1989-11-17 1992-09-02 Siemens Ag Trennschalter für metallgekapselte, druckgasisolierte hochspannungsschaltanlagen.
EP2791957B1 (de) * 2011-12-14 2015-12-09 Alstom Technology Ltd Mobile fördereinheit für einen leistungsschalter mit einer feder zur beschleunigung der trennung von lichtbogenkontakten
FR3001081A1 (fr) * 2013-01-14 2014-07-18 Alstom Technology Ltd Sectionneur a contact d'arc rotatif

Also Published As

Publication number Publication date
CN108885957B (zh) 2020-06-16
KR20180123567A (ko) 2018-11-16
EP3226276B1 (de) 2021-03-10
KR102056437B1 (ko) 2020-01-14
WO2017167480A1 (fr) 2017-10-05
CN108885957A (zh) 2018-11-23

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