EP0467797A1 - Hochspannungsschalter - Google Patents

Hochspannungsschalter Download PDF

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Publication number
EP0467797A1
EP0467797A1 EP91420234A EP91420234A EP0467797A1 EP 0467797 A1 EP0467797 A1 EP 0467797A1 EP 91420234 A EP91420234 A EP 91420234A EP 91420234 A EP91420234 A EP 91420234A EP 0467797 A1 EP0467797 A1 EP 0467797A1
Authority
EP
European Patent Office
Prior art keywords
bar
contact
main
whip
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.)
Ceased
Application number
EP91420234A
Other languages
English (en)
French (fr)
Inventor
Denis Koppe
François Duval
Patrick Leruyet
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0467797A1 publication Critical patent/EP0467797A1/de
Ceased 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
    • H01H31/34—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching
    • H01H31/36—Contact moved by pantograph
    • 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
    • H01H33/121—Load break switches
    • H01H33/123—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement
    • H01H33/124—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement the auxiliary contact being a whip contact

Definitions

  • the invention relates to a disconnector for a high-voltage electrical substation, in particular a pantograph or semi-pantograph disconnector, comprising by phase a mobile system of articulated arms having a contact head, cooperating with a main bar conducting a device sensor suspended from a high voltage conductor, said contact head comprising a movable main contact, and a movable arcing contact with whip piloted by a control mechanism arranged to ensure the closure of the movable arcing contact before that of the contact main movable, and vice versa the opening of the movable arcing contact after that of the main movable contact.
  • Disconnectors for high-voltage substations must open and close with high loop currents.
  • the presence of the whip makes it possible to divert the current during the closings and openings of the main contacts, which in particular preserves the wear of the movable contact clamps.
  • the contact surface of the bar is deteriorated by the electric arc at the level of the zone of contact with the whip.
  • the triggering of the whip control mechanism takes place on the other hand by means of complicated kinematics of the disconnector which requires a specific triggering adjustment.
  • the object of the present invention is to improve the capacity and endurance of a whip disconnector for high voltage stations.
  • the disconnector according to the invention is characterized in that the control mechanism comprises a locking finger intended to cooperate in the locked position with a lug retaining lug in an armed state, and a trigger lever controlled during the closing stroke by the main bar after centering of the latter by means of a guiding device, causing the finger to move towards an unlocked position for releasing the whisk, which is then propelled against a fixed arcing contact of the collecting device.
  • the triggering of the whip occurs during the closing stroke, and is a function of the proximity of the pick-up bar, and not of the kinematics of the disconnector.
  • the fixed arcing contact is formed by an auxiliary brass bar extending orthogonally to the main bar, while the whip is made of stainless steel. The choice of these materials avoids any contact welding, and transfers wear to the auxiliary bar.
  • the guide device is provided with an insulating fork integral with the contact head, and comprising a flared V-shaped portion for centering the main bar, and a central slot in which the said bar engages to actuate the release lever towards the 'unlocked state of the control mechanism before closing of the movable main contact.
  • a high-voltage semi-pantograph disconnector 10 is mounted on a porcelain insulator (not shown) by means of a support plate 12.
  • the disconnector 10 comprises a movable system of articulated arms 14 having at the base 16, a mechanical link 18 pivotally mounted on an axis 20 of the support plate 12, and at the opposite end, a contact head 22 cooperating with a collection device 24, which is generally suspended from a conductive cable of the network high voltage.
  • the support plate 12 is provided with a reset lever 26 intended to automatically reset the disconnector 10 when the contact head 22 arrives in the open position.
  • the capture device 24 comprises a main conductor bar 28, carried by two opposite supports 30, 32, and a fixed arcing contact 34 constituted by an auxiliary brass bar.
  • the horizontal bar 28 plays the role of fixed main contact extending orthogonally to the bar of the fixed arcing contact 34, which is shorter than the bar 28, and disposed above the latter.
  • a conductor 36 connects the fixed contact 34 to the support 32 to bring it to the potential of the bar 28.
  • the contact head 22 is composed of a guide fork 38 made of insulating material, of a movable main contact 40 in the form of clamps, and of a movable arcing contact 42 of the whip type, controlled by a mechanism of control 44.
  • the guide fork 38 includes a straight central slot 46 whose width corresponds substantially to the diameter of the main bar 28, and a flared part 48 in V for centering the bar 28 during the closing.
  • the whip of the movable arcing contact 42 is formed by a stainless steel spring rod, mounted with limited rotation on a pivot 50 of the control mechanism 44. The pivot 50 extends parallel to the bar of the fixed arcing contact 34 , such that the movement of the movable whip takes place in a plane parallel to the bar 28.
  • the whisk control mechanism 44 is equipped with a locking finger 52 (FIG. 4) intended to occupy a locked position and an unlocked position depending on the state of a trigger lever 54 pivotally mounted on an axis. 56 intermediate.
  • the active end of the locking finger 52 cooperates in the locked position with a retaining lug 58, so as to maintain the movable arcing contact 42 in a direction parallel to the guide fork 38. In this position armed with the control 44, the whip always remains separated from the bar 28 and the bar of the fixed arcing contact 34.
  • the operation of the disconnector 10 is as follows:
  • the whip of the movable arcing contact 42 is armed by the resetting lever 26, and is held in this position by the finger 52 in the locked position.
  • the contact head 22 is located in a low area, close to the support plate 12.
  • the mechanical link 18 rotates around the axis 20 in the direction of the hands of a shows, driving the contact head 22 towards the capture device 24 (FIG. 1).
  • V-shaped part 48 of the insulating guide strip 38 then rests on the main bar 28 (FIGS. 2 and 3), allowing a progressive centering effect of the main bar 28 during the movement of raising the contact head 22, indicated by arrow F.
  • FIGS. 5 and 6 the operation of refocusing the bar 28 by the guide fork 38 is completed.
  • the main bar 28 is located at the entrance to the slot 46, and is kept out of contact with the pliers of the movable main contact 40. In this position, the trigger lever 54 is separated from the main bar 28 by a small gap.
  • the main bar 28 engages in the straight slot 46 of the guide fork 38, and actuates the trigger lever 54, which pivots around the axis 56.
  • the withdrawal of the finger 52 towards the unlocked position then releases the control mechanism 44 of the whip 42, which strikes the bar of the fixed arcing contact 34, with establishment of the current in the arcing circuit. In this position, the clamps of the movable main contact 40 are always out of contact with the bar 28.
  • the disconnector 10 ends its operation by closing the clamps of the movable main contact 40 on the bar 28.
  • This closure takes place without an arc between the bar 28 and the contact clamps 40.
  • the control mechanism 44 In the closed position of the disconnector 10 (FIGS. 9 and 10), the control mechanism 44 is in the tripped state and the force of support of the whip on the bar of the fixed arcing contact 34 is greater than 2 daN .
  • the mechanical link 18 rotates around the axis 20 in a trigonometric direction causing the contact head 22 to descend. The latter moves away from the main bar 28, with separation of the clamps. of the movable main contact 40.
  • the current then passes through the whip and the arcing contact bar 42,34.
  • the whip slides on the bar of the fixed arcing contact 34, and finally escapes with interruption of the current. At this time, the whip is still in the triggered position.
  • the triggering of the control mechanism 44 of the whip essentially depends on the action of the main collecting bar 28 on the trigger lever 54. This triggering occurs exclusively during the closing of the disconnector when the bar 28 is suitably centered by the guide fork 38. Resetting of the control mechanism 44 is automatic at the end of the disconnector 10 opening stroke.
  • the presence of the whip associated with its control mechanism 44 allows the opening and closing of disconnectors with intensities up to 3000A at low voltage.
  • the choice of contact materials, namely the stainless steel whip, and the fixed arcing contact bar 34 made of brass, makes it possible to avoid any welding effect of the contacts when a large arcing current appears.
  • the arc is extinguished in the air, and wear is transferred to the brass bar of the fixed arc contact 34.
  • the main bar 28 does not undergo any wear, given the absence of arc at the contact clamps Principa the mobile 40.
  • the whisk and control mechanism assembly 44 is easily adaptable to disconnectors already installed without modification of the main contacts.
  • the invention is applicable to any other type of disconnectors, in particular pantographs or knives.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
EP91420234A 1990-07-19 1991-07-09 Hochspannungsschalter Ceased EP0467797A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009360A FR2665019B1 (fr) 1990-07-19 1990-07-19 Sectionneur a haute tension.
FR9009360 1990-07-19

Publications (1)

Publication Number Publication Date
EP0467797A1 true EP0467797A1 (de) 1992-01-22

Family

ID=9398983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420234A Ceased EP0467797A1 (de) 1990-07-19 1991-07-09 Hochspannungsschalter

Country Status (5)

Country Link
US (1) US5186315A (de)
EP (1) EP0467797A1 (de)
BR (1) BR9103089A (de)
CA (1) CA2046692A1 (de)
FR (1) FR2665019B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001011640A1 (en) * 1999-08-06 2001-02-15 Qei Inc. Switch actuator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6392181B1 (en) 2000-11-02 2002-05-21 Cleaveland/Price Inc. ARC extinguishing device with a high speed whip
US7078642B2 (en) 2003-01-14 2006-07-18 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US6762385B1 (en) 2003-01-14 2004-07-13 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
IT1398343B1 (it) * 2010-02-23 2013-02-22 Areva T&D Italy S P A Sezionatore a semi-pantografo.
CN102053196B (zh) * 2010-11-10 2013-05-22 西南交通大学 一种弓网电弧电压测试装置
DE102018222848A1 (de) * 2018-12-21 2020-06-25 Siemens Aktiengesellschaft Erdungsschalter für eine Mittel- und/oder Hochspannungs-Schaltungseinrichtung und entsprechende Schaltungseinrichtung
CN113241648B (zh) * 2021-05-21 2022-06-07 贵州电网有限责任公司 一种变电站隔离开关触头凝冻处理装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1100132A (fr) * 1954-02-26 1955-09-16 Alsthom Cgee Sectionneur pour haute tension
DE955616C (de) * 1953-02-06 1957-01-03 Licentia Gmbh Trennschalter fuer Hochspannungsanlagen
FR1204754A (fr) * 1958-07-22 1960-01-28 Merlin Gerin Dispositif de support pour sectionneurs
EP0070248A2 (de) * 1981-07-10 1983-01-19 Siemens Aktiengesellschaft Trennschalter
DE3307606A1 (de) * 1983-03-01 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Kontaktsystem fuer einsaeulen-scherentrennschalter

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA699860A (en) * 1964-12-15 I-T-E Circuit Breaker (Canada) Limited Operating mechanism for disconnect switches
CA699521A (en) * 1964-12-08 P. Bridges Ronald Electrical switches and arc-breaking devices
US1749537A (en) * 1926-10-04 1930-03-04 Jr Tomlinson Fort Johnson High-tension switch
US2750460A (en) * 1952-12-12 1956-06-12 Ite Circuit Breaker Ltd Quick break attachment for high voltage disconnecting switches
BE545881A (de) * 1955-03-25
CH334798A (de) * 1956-08-13 1958-12-15 Bbc Brown Boveri & Cie Trennschalter der Säulenbauart
BE567372A (de) * 1957-06-28
FR1346795A (fr) * 1962-02-09 1963-12-20 Asea Ab Sectionneur à haute tension
FR1350273A (fr) * 1962-03-02 1964-01-24 Magrini Fab Riun Scarpa Dispositif sectionneur de circuit électrique, notamment pour haute tension
SE310905B (de) * 1965-10-15 1969-05-19 Asea Ab
DE2256044B2 (de) * 1972-11-15 1980-09-25 Bunker Ramo Corp., Oak Brook, Ill. (V.St.A.) Umschaltkontakt
US4028513A (en) * 1975-05-08 1977-06-07 I-T-E Imperial Corporation Steel arcing contact for circuit breaker
US4103122A (en) * 1976-06-24 1978-07-25 Gould Inc. High voltage grounding switch requiring low operating effort
US4243854A (en) * 1979-11-05 1981-01-06 Pahl Richard B Quick-break attachment for a pole-top air-break switch
US4495390A (en) * 1983-09-22 1985-01-22 Ruhrtal Elektrizitatsgesellschaft Hartig GmbH & Co. Disconnect switch
US4481387A (en) * 1983-09-30 1984-11-06 Siemens-Allis, Inc. Voltage isolater switch with pivoted contact assemblies

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955616C (de) * 1953-02-06 1957-01-03 Licentia Gmbh Trennschalter fuer Hochspannungsanlagen
FR1100132A (fr) * 1954-02-26 1955-09-16 Alsthom Cgee Sectionneur pour haute tension
FR1204754A (fr) * 1958-07-22 1960-01-28 Merlin Gerin Dispositif de support pour sectionneurs
EP0070248A2 (de) * 1981-07-10 1983-01-19 Siemens Aktiengesellschaft Trennschalter
DE3307606A1 (de) * 1983-03-01 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Kontaktsystem fuer einsaeulen-scherentrennschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001011640A1 (en) * 1999-08-06 2001-02-15 Qei Inc. Switch actuator

Also Published As

Publication number Publication date
BR9103089A (pt) 1992-04-28
FR2665019A1 (fr) 1992-01-24
US5186315A (en) 1993-02-16
FR2665019B1 (fr) 1992-09-18
CA2046692A1 (en) 1992-01-20

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