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EP0921548A1 - Verriegelungsteuerung für einen lastschalter und einen lasttrennschalter - Google Patents

Verriegelungsteuerung für einen lastschalter und einen lasttrennschalter Download PDF

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Publication number
EP0921548A1
EP0921548A1 EP98402944A EP98402944A EP0921548A1 EP 0921548 A1 EP0921548 A1 EP 0921548A1 EP 98402944 A EP98402944 A EP 98402944A EP 98402944 A EP98402944 A EP 98402944A EP 0921548 A1 EP0921548 A1 EP 0921548A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
disconnector
rod
arm
rotation
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.)
Withdrawn
Application number
EP98402944A
Other languages
English (en)
French (fr)
Inventor
Edmond Thuries
Jean-Michel Plat
Jean-Marc Willieme
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
GEC Alsthom T&D 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 GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0921548A1 publication Critical patent/EP0921548A1/de
Withdrawn legal-status Critical Current

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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
    • H01H33/02—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
    • H01H33/125—Load break switches comprising a separate circuit breaker

Definitions

  • the invention relates to an interlocking control of a circuit breaker and a disconnector, to open the disconnector so subsequent to the opening of the circuit breaker, and to close the circuit breaker subsequently to the disconnector.
  • the circuit breaker includes two permanent current contacts, one of which is fixed and the other is mobile, and two arcing contacts, one of which is fixed and the other mobile.
  • Pneumatic cylinders control movement movable contacts to open or close the circuit breaker.
  • the disconnector includes a contact rod which is movable relative to the two fixed contacts, and which is controlled in displacement by a other pneumatic cylinder to disconnect or connect the two fixed contacts.
  • Pneumatic cylinders are fitted with solenoid valves controlled by sophisticated electronics to ensure the opening of the disconnector subsequent to that of the circuit breaker, and the closing of the circuit breaker subsequent to that of the disconnector.
  • the object of the invention is to perform an interlocking of a circuit breaker and a disconnector, which is reliable and has a low cost of construction and maintenance.
  • the subject of the invention is an order interlocking of a circuit breaker and a disconnector, to open the disconnector subsequent to the opening of the circuit breaker, and to close the circuit breaker subsequent to the disconnector, comprising a movable bar for opening or closing the circuit breaker, and a displacement rod of a disconnector rod to open or close the disconnector, characterized in that, the movable bar is driven in movement by an arm which is integral with a shaft of outlet and which is movable in rotation in a plane perpendicular to the output shaft, and the displacement rod, is driven by through a moving part around an axis substantially parallel to the output shaft, the arm driving the workpiece during a circuit breaker opening or closing phase, by via a roller which is fixed on the arm and which slides in a piece throat.
  • Figure 1 shows a first embodiment of a interlocking control according to the invention.
  • Figure 2 shows a second embodiment of a interlock control according to the invention.
  • the circuit breaker is for example of the type of a generator circuit breaker or medium network circuit breaker or high voltage. In a known manner, it comprises two permanent current contacts, one of which is fixed and the other of which is mobile, and two arcing contacts, one of which is also fixed and the other is mobile.
  • the two movable contacts are moved for example by translation in a longitudinal direction L via a movable bar 3 in the longitudinal direction L.
  • the disconnector is for example made up of a rod which connects the two fixed contacts of the circuit breaker and which slides with respect to one of these two contacts to connect or disconnect them.
  • the stem of the disconnector is moved in translation in the direction longitudinal L via a displacement rod 5.
  • FIG. 1 there is shown an arm 7 which is integral with a output shaft 9 of a fixed mechanical control relative to the circuit breaker, and which is movable in rotation in the perpendicular plane to the output shaft.
  • the movable bar 3 is articulated on the arm 7 to be moved in the longitudinal direction L when the arm 7 is moved in rotation by the output shaft 9.
  • the bar mobile 3 is articulated at one end of the arm 7 to benefit from a significant leverage when rotating the output shaft 9.
  • a piece at square 11 with respect to the circuit breaker is mounted movable in rotation about a fixed axis R1 which is substantially parallel to the output shaft 9 and which passes through the intersection of a long branch 11A and a short branch 11B of the workpiece square 11.
  • the displacement rod 5 is linked in displacement to the long branch 11A by means of a connecting rod 13, for be moved in the longitudinal direction L when the part at square 11 is moved in rotation about its axis R1.
  • the connecting rod 13 is articulated at one end of the long branch 11A of the square part 11 to benefit from a significant leverage when the latter rotates around its axis R1.
  • the short branch 11B of the square part 11 is shaped at one end in a duckbill with an 11C groove which opens with an 11D opening.
  • a stop 15 fixed relative to the circuit breaker blocks the rotation of the square part 11 in a position where the short branch 11B is substantially parallel to the longitudinal direction L and which corresponds to a closed position of the circuit breaker.
  • the opening 11D of the duckbill is arranged on a trajectory circular C described by a roller 17 fixed on the arm 7 to receive and to guide this roller 17 in the groove 11C during the rotation of the arm 7.
  • the output shaft 9 imposes a rotation ⁇ 1 on the arm 7 during which the movable bar 3 is driven in movement to separate the fixed contacts from moving contacts of the circuit breaker.
  • the roller 17 describes the circular trajectory C and reaches the opening 11D of the short branch 11B shaped like a duckbill.
  • the output shaft 9 imposes a rotation ⁇ 2 on the arm 7 during which the roller 17 slides in the groove 11C of the square part 11 while driving the latter rotating around its axis R1.
  • the displacement rod 5 is driven in displacement by rotation of the square part 11, and displaces the disconnector rod to disconnect the two fixed contacts of the circuit breaker.
  • a cam 19 is mounted on the arm 7 to attack, when the output shaft 9 begins the second opening phase angle ⁇ 2, a damper 21 mounted fixed relative to the circuit breaker. This controls the speeds of the two opening phases, which are typically 3 meters per second (m / s) when opening the circuit breaker, and 0.5 m / s when the disconnector opens.
  • FIG 2 there is shown the arm 7 which is integral with the output shaft 9 of a fixed mechanical control relative to the circuit breaker, and which is movable in rotation in the perpendicular plane to the output shaft 9.
  • the movable bar 3 is articulated to the arm 7 to be moved in the longitudinal direction L via a first roller 18A which slides in a recess 23 when the arm 7 is moved in rotation by the output shaft 9. It is provided to articulate the movable bar 3 to the arm 7 by means of a rod made of a non-conductive material to electrically insulate the mechanical drive output shaft circuit breaker.
  • a first lever 12 is mounted mobile in rotation about an axis R2 which is fixed relative to the circuit breaker and which is substantially parallel to the output shaft 9.
  • the axis R2 is located approximately in the middle of the first lever 12 to divide the latter into two branches 12A and 12B.
  • a branch 12B of the first lever 12 is conformed to a end in a duckbill with a 12C groove which opens out a 12D opening.
  • the opening 12D of the duckbill is arranged on a circular path C described by a second roller 18B fixed on the arm 7 to receive and guide this roller 18B in the groove 11C during the rotation of the arm 7.
  • the other branch 12A of the first lever 12 is articulated, via a rigid rod 25 to a second lever 27, which is movable in rotation about an axis R3 fixed by relative to the circuit breaker and substantially parallel to the output shaft 9.
  • the displacement rod 5 is linked in displacement to the second lever 27 by means of an insulating connecting rod 14, one of which end 14A is articulated to lever 26 and the other end 14B is integral with the displacement rod 5 while being disposed perpendicular to the longitudinal direction L of the circuit breaker.
  • a sliding member 29 is mounted around the rod displacement 5 to guide its displacement in translation along the longitudinal direction L.
  • the output shaft 9 imposes a rotation ⁇ 1 on the arm 7 during which the movable bar 3 is driven in movement to separate the fixed contacts from moving contacts of the circuit breaker.
  • the second roller 18B describes the circular path C and reaches the opening 12D of the branch 12B shaped like a duckbill.
  • the output shaft 9 imposes a rotation ⁇ 2 on arm 7 during which the second roller 18B slides in the groove 12C of the first lever 12 in causing the latter to rotate about its axis R2.
  • the second lever 27 is driven in rotation by the first lever 12 in a rotation of opposite direction to that of the rotation of the first lever 12.
  • the displacement rod 5 is driven by the second lever 27 in a translation guided by the sliding member 29.
  • the disconnector rod is moved by the displacement rod 5 to disconnect the two fixed contacts of the circuit breaker.
  • Cam 19 is mounted on the arm 7 to attack, when the output shaft 9 undertakes the second phase of angle opening ⁇ 2, a damper 21 fixedly mounted relative to the circuit breaker. We thus control the speeds of the two opening phases.
  • the tree of output 9 is motorized to control the movement of arm 7. It is also planned to motorize the movable bar 3 and disengage the shaft output 9 to give it a role of mechanical transmitter. The previously described operation remains identical.
  • the single interlocking command according to the invention applies to delayed or non-delayed zero current circuit breakers.
  • the angle of rotation ⁇ 1 of the output shaft is fixed at 52 degrees, for a total rotation ⁇ of 60 degrees.
  • the zero crossing of the alternating current is delayed, by example by a reactive component of an alternator connected in series with the circuit breaker, the time required to extinguish the arc formed between the arcing contacts of the circuit breaker is increased.
  • the disconnector rod is designed to hold a transient electric voltage, and to resist the formation of an electric arc.
  • a rod made of a copper and tungsten alloy is preferably chosen.
  • the displacement of the disconnector rod, generated by the rotation ⁇ 2 of the output shaft, gives rise to an electric arc in series with that existing between the arcing contacts.
  • the increase in the total electrical resistance, sum of the electrical resistance of the two arcs in series accelerates the passage of the alternating current through zero, and allows the arcs to be extinguished at this instant.
  • the increase in the total electrical resistance is all the greater when the medium in which the disconnector is placed, for example atmospheric air, is all the less dielectric as the medium in which the arcing contacts are arranged, for example sulfur hexafluoride SF 6 under pressure.
  • the time required to extinguish the electric arcs is reduced to a time comparable to that which is sufficient in the presence of an undelayed electric current, by modifying the angles of the first and second opening phases.
  • the angle of rotation of the first phase is fixed at 30 degrees and that of the second phase at 30 degrees, or at 45 degrees and 15 degrees respectively.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP98402944A 1997-12-08 1998-11-25 Verriegelungsteuerung für einen lastschalter und einen lasttrennschalter Withdrawn EP0921548A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715461 1997-12-08
FR9715461A FR2772184B1 (fr) 1997-12-08 1997-12-08 Commande d'interrouillage d'un disjoncteur et d'un sectionneur

Publications (1)

Publication Number Publication Date
EP0921548A1 true EP0921548A1 (de) 1999-06-09

Family

ID=9514281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402944A Withdrawn EP0921548A1 (de) 1997-12-08 1998-11-25 Verriegelungsteuerung für einen lastschalter und einen lasttrennschalter

Country Status (4)

Country Link
US (1) US5955716A (de)
EP (1) EP0921548A1 (de)
CA (1) CA2253767A1 (de)
FR (1) FR2772184B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6617533B1 (en) 2002-09-20 2003-09-09 Siemens Energy & Automation, Inc. Interlock for a circuit breaker
US7821775B2 (en) * 2008-04-15 2010-10-26 General Electric Company Racking mechanism for a circuit breaker
US7863534B2 (en) 2008-04-15 2011-01-04 General Electric Company Spring discharge mechanism for circuit breaker
WO2011089741A1 (ja) * 2010-01-20 2011-07-28 三菱電機株式会社 真空バルブ
US8772666B2 (en) 2012-02-09 2014-07-08 G & W Electric Company Interlock system for switchgear
US9685283B2 (en) 2012-02-09 2017-06-20 G & W Electric Company Interlock for circuit interrupting device
FR2999331B1 (fr) * 2012-12-12 2019-05-31 Alstom Technology Ltd Appareillage de coupure de courant ameliore
KR101752722B1 (ko) 2015-12-30 2017-07-11 엘에스산전 주식회사 링 메인 유닛의 인터락 장치
CN113990705B (zh) * 2021-11-05 2022-08-23 山东泰开成套电器有限公司 一种环保型气体绝缘开关设备及其使用方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR787404A (fr) * 1934-03-21 1935-09-23 Alsthom Cgee Nouveau procédé d'interruption d'un circuit électrique au moyen de plusieurs coupures en série
US3399286A (en) * 1966-03-07 1968-08-27 Powerdyne Inc High voltage electric swtich
US3824359A (en) * 1972-10-06 1974-07-16 Mc Graw Edison Co Vacuum loadbreak switch
EP0092205A2 (de) * 1982-04-19 1983-10-26 Hitachi, Ltd. Zusammengestellter Schutzschalter
US4591678A (en) * 1984-10-26 1986-05-27 Square D Company High power switching apparatus
DE3528770A1 (de) * 1985-08-10 1987-02-19 Driescher Eltech Werk Mittelspannungs-schaltanlage
FR2744284A1 (fr) * 1996-01-29 1997-08-01 Schneider Electric Sa Interrupteur ou disjoncteur multipolaire moyenne tension

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0385265T3 (da) * 1989-03-03 1994-11-14 Gec Alsthom T & D Ag Fjederkraftdrev for en effektafbryder
JPH06215672A (ja) * 1993-01-20 1994-08-05 Toshiba Corp 真空遮断器
US5436414A (en) * 1993-07-16 1995-07-25 Eaton Corporation Drive mechanism for circuit interrupters
US5438174A (en) * 1993-11-22 1995-08-01 Eaton Corporation Vacuum interrupter with a radial magnetic field
FR2763171B1 (fr) * 1997-05-07 1999-07-09 Gec Alsthom T & D Sa Disjoncteur avec sectionneur

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR787404A (fr) * 1934-03-21 1935-09-23 Alsthom Cgee Nouveau procédé d'interruption d'un circuit électrique au moyen de plusieurs coupures en série
US3399286A (en) * 1966-03-07 1968-08-27 Powerdyne Inc High voltage electric swtich
US3824359A (en) * 1972-10-06 1974-07-16 Mc Graw Edison Co Vacuum loadbreak switch
EP0092205A2 (de) * 1982-04-19 1983-10-26 Hitachi, Ltd. Zusammengestellter Schutzschalter
US4591678A (en) * 1984-10-26 1986-05-27 Square D Company High power switching apparatus
DE3528770A1 (de) * 1985-08-10 1987-02-19 Driescher Eltech Werk Mittelspannungs-schaltanlage
FR2744284A1 (fr) * 1996-01-29 1997-08-01 Schneider Electric Sa Interrupteur ou disjoncteur multipolaire moyenne tension

Also Published As

Publication number Publication date
FR2772184B1 (fr) 2000-01-28
FR2772184A1 (fr) 1999-06-11
CA2253767A1 (fr) 1999-06-08
US5955716A (en) 1999-09-21

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