EP1223596B1 - Sectionneur a haute tension a isolation dans l'air - Google Patents

Sectionneur a haute tension a isolation dans l'air Download PDF

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Publication number
EP1223596B1
EP1223596B1 EP01403266A EP01403266A EP1223596B1 EP 1223596 B1 EP1223596 B1 EP 1223596B1 EP 01403266 A EP01403266 A EP 01403266A EP 01403266 A EP01403266 A EP 01403266A EP 1223596 B1 EP1223596 B1 EP 1223596B1
Authority
EP
European Patent Office
Prior art keywords
contact
fingers
angle
disconnector
arm
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.)
Expired - Lifetime
Application number
EP01403266A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1223596A1 (fr
Inventor
Daniel Demissy
Anh-Dung Huynh
Richard Marchand
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.)
Grid Solutions SAS
Original Assignee
Areva T&D SAS
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 Areva T&D SAS filed Critical Areva T&D SAS
Publication of EP1223596A1 publication Critical patent/EP1223596A1/fr
Application granted granted Critical
Publication of EP1223596B1 publication Critical patent/EP1223596B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H31/28—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 angularly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/52—Contacts adapted to act as latches
    • 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
    • H01H31/28—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 angularly-movable contact
    • H01H2031/286—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 angularly-movable contact wherein the contact is rotatable around its own longitudinal axis
    • 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
    • H01H31/02—Details
    • H01H31/023—Base and stationary contacts mounted thereon
    • 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
    • H01H31/02—Details
    • H01H31/026—Movable parts and contacts mounted thereon

Definitions

  • the present invention relates to a high-voltage isolating switch in the air.
  • An isolator includes an arm, often called a blade, pivoting about a horizontal axis and electrically connected at one of its ends to a first connector disposed at the top of a first insulating column; the other end of the arm, the free end, comprises a contact piece, called hammer, which cooperates, in the closed position of the disconnector, with a jaw connected to a second connector disposed at the top of a second insulating column.
  • the jaw consists of two parallel rows facing each other, contact pieces each formed of a curved copper blade and attached to a jaw support.
  • the hammer that extends the arm at its end is a heavy and expensive piece of bronze whose section by a plane perpendicular to the axis of the arm corresponds to a circle of smaller diameter than that of the arm and which flattens on a diameter extending to join the diameter of the arm, the thickness of these two diametral extensions being 2 to 3 mm with rounded edges.
  • the present invention proposes to improve certain aspects of a disconnector of this type and relates to an air-insulated high-voltage disconnector comprising a pivotable arm capable of pivoting at one of its ends, around a horizontal axis perpendicular to the axis ⁇ of the arm and also able to rotate about its own axis ⁇ , the free end of the arm carrying a contact piece called cooperating hammer, in the closed position of the disconnector, with a jaw comprising a support of jaw to which are fixed two rows facing contact fingers, characterized in that said contact fingers are tubular and open at both ends.
  • said fingers facing each other form between them an angle ⁇ of between 2 and 6 °.
  • said contact fingers are fixed to the jaw support so that, in the closed position of the disconnector, the angle E between the axis ⁇ of the arm and the contact fingers is greater than 90 °.
  • said hammer is equipped with contact pads cooperating with the contact fingers, each contact pad forming a corner, of angle ⁇ , which, when closing the disconnector, meets the corresponding row of fingers with a angle of attack ⁇ , said angle of attack ⁇ being less than 90 °.
  • each contact plate has a curved contact face extending over an angle ⁇ , seen from the axis ⁇ of the arm, this angle ⁇ being of the order of 17 °.
  • the angle ⁇ seen from the axis ⁇ of the arm, between this point of contact and the perpendicular plane the contact finger passing through the axis ⁇ , is of the order of 10 °.
  • a disconnector comprising a pivoting arm 1 axis ⁇ pivotable in a vertical plane about a horizontal axis perpendicular to ⁇ , not shown, located to the left of the Fig. 1 .
  • the unrepresented part of the arm, its pivoting control about said horizontal axis, as well as its rotation control about its axis ⁇ , as well as its support, do not form part of the invention and could, for example, be in accordance with the invention. to what is described in the patent French 2,674,985 with reference to the Fig. 1 .
  • the arm 1 is tubular, as can be seen well Fig. 2 , and carries at its free end a contact piece called hammer 2.
  • the hammer is composed of an aluminum support piece 3 on which two copper contact plates 4A and 4B have been fixed. This lighten the hammer.
  • contact pads 4A and 4B of a particular shape, specified below, constitute the cooperating contact parts, in the closed position of the disconnector with two rows, facing each other, of contact fingers 5A and 5B of the disconnector jaw.
  • a jaw support 6 which fingers 5A and 5B are attached to a jaw support 6 by a weld 7. At the jaw support 6 is fixed a stop 8 for limiting the penetration of the arm 1 between the fingers 5A and 5B of the jaw. A connector 9 is also attached to the jaw support 6. A second connector, not shown, is electrically connected to the not shown end of the arm 1, the side of its articulation about a horizontal axis.
  • the jaw is supported at the upper end of a carrier insulator that is not visible, Fig. 1 , that the fitting 10 of its upper end.
  • the arm 1 When closing, the arm 1 begins to pivot about its horizontal axis until it enters the jaw between the fingers 5A and 5B by making a pivoting angle of about 92 °, and then the arm 1 turns around. its axis ⁇ of 90 ° in the direction of the arrow 15, Fig. 7 . It is then that one is in a closed position, as represented on these Fig. 1 to 3 .
  • the fingers 5A and 5B are fixed to the jaw support 6 so that the angle E between the axis ⁇ of the arm 1 in the closed position and the fingers 5A-5B is greater than 90 ° .
  • the force F is maximum when the fingers 5A-5B are perpendicular to the axis ⁇ of the arm 1 and it decreases when this angle increases. Taking for example an angle E of 120 °, the force F is about 0.6 times that in the case where the angle E is 90 °.
  • the fingers 5A and 5B being traversed in the same direction by the current, tend to get closer; thus, in the event of a short circuit, this approaching force is important and the force F results in a pulling force of the fingers of the jaw support.
  • the angle E is about 120 ° and preferably between 100 and 140 °.
  • the fingers 5A and 5B are not parallel but form between them a slight angle ⁇ of a few degrees of the order of 2 to 6 °.
  • the fingers 5A and 5B are welded to the jaw support 6 at an angle D of 88 °, which gives an angle of 4 ° between the fingers 5A and 5B.
  • a locking abutment 11 is attached to a contact finger 5B at a level above the hammer 2 in position closed disconnector.
  • this stop 11 has no disadvantage since the opening begins with a 90 ° rotation of the hammer 2 in the direction of the arrow marked 12, Fig. 2 , before the pivoting of the arm 1 about a horizontal axis perpendicular to the plane of the Fig. 1 .
  • the fingers 5A and 5B facing each other are fixed, as has been said, to the jaw support 6 by welding 7 with the angles E and D and have a profile tubular opening at both ends so as to induce convective heat exchange in the tube.
  • These fingers are aluminum and each equipped, on the face facing the opposite row, a copper contact blade 13A, 13B cooperating directly with the contact pads 4A, 4B copper hammer 2.
  • This arrangement of aluminum tubular fingers just equipped with copper contact blades can greatly reduce the weight of the contact fingers compared to curved copper blades of the prior document cited in the introduction, for improved thermal performance and having sufficient rigidity fingers requiring no additional spring, as is generally necessary in the prior art where a spring is disposed between the jaw support and the curvature of the curved copper blade to provide sufficient rigidity.
  • a retaining rod, respectively 14A, 14B and 14C connects, in pairs, the fingers 5A and 5B so as to limit their spacing. These retaining rods are located approximately mid-length of the contact fingers 5A, 5B.
  • the arm 1 undergoes an electrodynamic force of lateral displacement in the direction of F 1 or F 2 ( Fig. 2 ), depending on whether the short-circuit occurs with a phase to the right or left of the phase on which the disconnector currently described is located.
  • This displacement thanks to the spring action of the fingers and the retaining rods 14A, 14B and 14C does not cause contact break between the contact parts 4A and 4B of the hammer and the contact blades 13A, 13B of the fingers .
  • the Fig. 5 shows the section of a finger, for example 5B, and the Fig. 6 this same finger in section according to VI-VI of the Fig. 5 .
  • the plates which comprise a wedge end 16 having an angle ⁇ meet the fingers with an angle of attack ⁇ .
  • This angle of attack ⁇ is less than 90 ° and preferably of the order of 60 °, and makes it possible to break the ice that may have formed on the contact blades 13A, 13B.
  • the angle ⁇ of the corner 16 is for example of the order of 30 to 40 °.
  • this contact occurs when the distance separating the axis ⁇ from the tip of the wedge 16 is greater than the distance separating the axis ⁇ from the fingers 13A, 13B so that from that moment up to the tip of the corner 16 comes to point 18, which corresponds to a rotation of an angle ⁇ of about 10 °; the contact pads 4A, 4B push the fingers 5A, 5B acting as a spring, the contact pressure increasing to this point. Then, the contact face 19 being curved, the contact pressure remains substantially constant over a range of rotation of an angle ⁇ , Fig. 8 , about 17 ° corresponding to the angle ⁇ that covers the contact surface 19 of contact pads 4A, 4B seen from the axis ⁇ .
  • This range of contact at constant pressure on an angle ⁇ of about 17 ° makes it possible to overcome the angular gaps resulting from a deficient adjustment or a loss of precision caused by the wear of the components.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Organic Insulating Materials (AREA)
  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
  • Telephone Set Structure (AREA)
EP01403266A 2001-01-12 2001-12-17 Sectionneur a haute tension a isolation dans l'air Expired - Lifetime EP1223596B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100425 2001-01-12
FR0100425A FR2819627B1 (fr) 2001-01-12 2001-01-12 Sectionneur a haute tension a isolation dans l'air

Publications (2)

Publication Number Publication Date
EP1223596A1 EP1223596A1 (fr) 2002-07-17
EP1223596B1 true EP1223596B1 (fr) 2008-05-07

Family

ID=8858774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01403266A Expired - Lifetime EP1223596B1 (fr) 2001-01-12 2001-12-17 Sectionneur a haute tension a isolation dans l'air

Country Status (10)

Country Link
US (1) US6570117B2 (es)
EP (1) EP1223596B1 (es)
CN (1) CN1213450C (es)
AT (1) ATE394786T1 (es)
BR (1) BR0200026A (es)
DE (1) DE60133876D1 (es)
ES (1) ES2306699T3 (es)
FR (1) FR2819627B1 (es)
MX (1) MXPA02000414A (es)
PT (1) PT1223596E (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954507B1 (fr) * 2009-12-22 2012-04-20 Itron France Module de mesure de courant de phase pour compteur electrique, dote d'une fonction de coupure de courant
IT1400992B1 (it) * 2010-07-12 2013-07-05 Areva T&D Italy S P A Sezionatore, particolarmente del tipo a doppia interruzione con doppio movimento.
CN203746673U (zh) * 2013-02-05 2014-07-30 阿斯科动力科技公司 并联切换开关的触点组件
US11114262B2 (en) 2017-11-17 2021-09-07 Abb Power Grids Switzerland Ag Contact system for electrical current conduction and bus transfer switching in a switchgear

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733322A (en) * 1956-01-31 curtis
US2554824A (en) * 1946-05-31 1951-05-29 Westinghouse Electric Corp Switch
US2745919A (en) * 1952-05-08 1956-05-15 Chance Co Ab High voltage air break switch assemblies
DE1022299B (de) * 1954-07-31 1958-01-09 Igor Ponoschin Sicherungsunterteil
US2963560A (en) * 1958-02-12 1960-12-06 Kearney James R Corp Switch
US3206568A (en) * 1961-04-19 1965-09-14 Ite Circuit Breaker Ltd Dual metal electric switch
US3182145A (en) * 1961-06-16 1965-05-04 Mc Graw Edison Co Electric switch
US3544742A (en) * 1969-01-09 1970-12-01 Westinghouse Electric Corp Electric switch having improved blade construction
DE1928922B2 (de) * 1969-06-06 1976-02-12 Siemens AG, 1000 Berlin und 8000 München Trennschalter
US4379956A (en) * 1980-12-15 1983-04-12 Cleaveland/Price Enterprises, Inc. Break-jaw construction for a disconnecting switch structure
FR2668647B1 (fr) * 1990-10-26 1992-12-24 Gec Alsthom Engergie Inc Sectionneur a insertion de resistance.
FR2674985B1 (fr) * 1991-04-08 1996-09-06 Gec Alsthom Engergie Inc Sectionneur a ouverture brusque.

Also Published As

Publication number Publication date
MXPA02000414A (es) 2004-05-21
CN1213450C (zh) 2005-08-03
FR2819627A1 (fr) 2002-07-19
FR2819627B1 (fr) 2004-08-06
PT1223596E (pt) 2008-07-21
US20020092828A1 (en) 2002-07-18
EP1223596A1 (fr) 2002-07-17
ES2306699T3 (es) 2008-11-16
US6570117B2 (en) 2003-05-27
CN1365129A (zh) 2002-08-21
BR0200026A (pt) 2002-10-22
ATE394786T1 (de) 2008-05-15
DE60133876D1 (de) 2008-06-19

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