EP1855300A2 - Trennschalter für einen Wechselstromschalter, der von einem Servomotor betätigt wird - Google Patents

Trennschalter für einen Wechselstromschalter, der von einem Servomotor betätigt wird Download PDF

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Publication number
EP1855300A2
EP1855300A2 EP20070107906 EP07107906A EP1855300A2 EP 1855300 A2 EP1855300 A2 EP 1855300A2 EP 20070107906 EP20070107906 EP 20070107906 EP 07107906 A EP07107906 A EP 07107906A EP 1855300 A2 EP1855300 A2 EP 1855300A2
Authority
EP
European Patent Office
Prior art keywords
switch
contacts
circuit breaker
axis
breaker according
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
EP20070107906
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English (en)
French (fr)
Other versions
EP1855300A3 (de
EP1855300B1 (de
Inventor
Xavier Allaire
Denis Frigiere
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.)
General Electric Technology GmbH
Original Assignee
Areva T&D SAS
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Filing date
Publication date
Application filed by Areva T&D SAS filed Critical Areva T&D SAS
Publication of EP1855300A2 publication Critical patent/EP1855300A2/de
Publication of EP1855300A3 publication Critical patent/EP1855300A3/de
Application granted granted Critical
Publication of EP1855300B1 publication Critical patent/EP1855300B1/de
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Anticipated expiration legal-status Critical

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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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • 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
    • H01H33/36—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • 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
    • H01H33/002—Very heavy-current switches
    • 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 present invention relates to an alternator disconnect circuit breaker that overcomes these disadvantages. These objects are achieved by the fact that the synchronization means are actuated by a servomotor.
  • the servo motor actuates the synchronization means so as to obtain a contact opening speed of the first switch between 1.5m / s and 2.5m / s for approximately the first half of the opening stroke of these contacts and a speed between 0.5m / s and 0.8m / s during the second half of the opening stroke of these contacts.
  • the synchronization means are designed so that the second switch opens substantially when the first switch has made half of its travel and at an opening speed between 1.5m / s and 2.5m / s.
  • the third switch opens when the first switch has traveled substantially two-thirds of its opening stroke.
  • the synchronization means are designed in such a way that the opening speed of the third switch is between 1.5m / s and 2.5m / s.
  • FIG. 1 The operating principle of a circuit breaker, and in particular of an alternator circuit breaker according to the invention, is shown schematically in FIG. FIG. 1, with a main circuit in which an intensity I 0 close to the nominal current I flows in operation, and an auxiliary circuit biased for the short-circuit cutoff.
  • the passage of a current I with a rated current greater than several thousand amperes requires the use on the main circuit of a switch 10 whose contacts are particularly conductive, for example copper ; their breaking capacity is however limited because of the generation of electric arcs.
  • a second switch 20 is connected in parallel with the first 10 in order to perform the actual cutoff function, the opening of the first switch 10 actually switching the current I of the main circuit on this auxiliary circuit; the contacts of this second switch 20, for example tungsten, are of limited performance with respect to the passage of the rated current I, but have a high breaking capacity.
  • the functions of transmission of the permanent current and short circuit break are separated: in case of bias, the first switch 10 is first activated, the current I then completely passes through the auxiliary circuit and causes the opening the second switch 20 to obtain the cutoff function.
  • a third switch 30 is then open: its function is mainly a safety function, its association on the auxiliary circuit to avoid a dielectric strength drop of the second switch 20 which could accidentally allow the passage of current in the associated branch.
  • the disconnector 30 is first closed, then the cut-off switch 20, and finally the first switch 10.
  • Each of the switches 10, 20, 30 comprises a pair of movable contacts with respect to each other; advantageously, the first contact 12, 22, 32 of each pair is fixed, and the second contact 14, 24, 34 is movable relative to the first. According to a first embodiment illustrated in FIG. 2, each of the movable contacts moves in translation along a respective axis AA, BB, CC.
  • the first switch 10 may be of the gas type; it can also, especially if the nominal current is very high, itself be a switching device comprising two switches in parallel with each other.
  • the first switch 10 is a switch in the air comprising a first tubular contact 12 in which can be inserted a second tubular contact 14 as well.
  • the second switch 20 may be a gas circuit breaker SF 6 type; preferably, since the current I - I 0 passing through it is weak in normal operation, it is a vacuum interrupter: this makes it possible to avoid the use of sulfur hexafluoride which does not fulfill all the criteria ecological, and reduces costs.
  • the mobile contact 24 the second switch 20 is moved by means of an actuating bar 44 movable along the axis BB.
  • the third switch 30 may, according to one embodiment, comprise a fixed contact 32 in which can be inserted another movable contact 34 along the axis CC opening / closing, the rod type.
  • the rod 34 can be moved by means of a bar 46 in translation.
  • a servo motor 40 allows the displacement of the first 14, second 24 and third 34 movable contacts.
  • the servomotor 40 is operatively connected to each of the actuators 42, 44, 46.
  • Synchronization means 50 enable the relative openings of the switches 10, 20, 30 to be deferred.
  • the servomotor 40 first opens the first switch 10. This opening is, in a first part of the contact opening stroke at a relatively fast speed, between 1.5m / s and 2.5m / s and preferably equal to 2m / s. This first portion extends over substantially half of the opening stroke of the first switch 10.
  • the synchronization means 50 control the opening of the second switch 20.
  • This sufficient distance is a function of the voltage. For example, an opening distance of 70mm can be sufficient for a voltage of 61kV.
  • the second switch opens at the latest when the first switch has traveled halfway. For example, if the couse of the first switch is 170mm, the second switch will open at the latest when the movable contacts of the first switch have traveled 85mm. Its speed of opening and relatively fast, about 2m / s.
  • the first switch having traveled half of its travel, the servomotor slows down its speed of actuation of the synchronization mechanism 50 so that the second half of the opening of the contacts 12, 14 is relatively slow. Relatively slowly, it must be understood that the opening speed, expressed in m / s is about three times slower than the relatively fast speed. Thus, the relatively slow opening speed of the first switch will be between 0.5 and 0.8m / s.
  • the synchronization means cause a certain time to be expected for the extinction of the circuit breaker arc 20 before moving the third contact 34 of the disconnector 30.
  • the disconnector having reached a disconnection distance sufficient, the servo motor moves a position indicator (not shown) whose function is to indicate if the circuit breaker is open or closed.
  • each actuating bar 42, 44, 46 of this embodiment moves in translation and is integral with the same control means 40, the three axes AA, BB, CC of opening / closing are not necessarily parallel, at least one being intersecting the first axis AA for example.
  • the synchronization means 50 may thus for example comprise, on the actuating bar 42 of the first switch 10, a generally longitudinal groove 52 along the axis AA of the bar but comprising an oblique part, the groove being associated with a element of the lug type 54 secured to the second actuating bar 44, so that, at first, during the movement of the first movable contact 14, the position of the lug 54 remains stable, then, in a second step, the lug 54 is displaced so as to move the second mobile contact 24 away from the second fixed contact 22.
  • the synchronization means 50 may comprise a system similar to the previous one 52, 54 to delay the opening of the disconnector 30 with respect to the breaking switch 20; it is however preferable that the synchronization means 50 are directly associated between the first and third switches 10, 30.
  • the synchronization means 50 comprise a lever arm 56 coupled to an end portion at the third movable contact 34 and whose pivot axis is associated with a groove 58 located in the actuating bar 46 of the third switch 30: the actuating rods 42, 46 of the first and third switches 10, 30 are jointly moved by the actuating means 40, but a delay in the displacement of the third contact 34 is generated by the latency before the pivoting of the lever 56.
  • the section switch 30 ' can operate on another principle of the "knife disconnector" type.
  • the main switch 10 ' comprises two relatively translational movable contacts 12', 14 'disposed in an envelope such as a 200 mm diameter tube; in an operating position illustrated in FIG. 3A, the alternator current I 0 flows in this main circuit (see arrow).
  • the servomotor 60 separates relatively quickly the two contacts 12 ', 14': the operation is performed by means of a bar 42 '.
  • the current I retains its main path, but an arc is formed, covering the distance between the two contacts 12 ', 14' of the switch 10 '; then, the interruption on the main circuit is completed ( Figure 3C), and the current flows only on the auxiliary circuit, the delay means 50 'having delayed the opening of the contacts 22', 24 'of the switch 20'.
  • the dielectric distance on the main circuit makes it possible to hold the transient recovery voltage, that is to say that the actuating bar 42 'moves about half of its total stroke before opening the chamber at 20 'vacuum.
  • the servomotor 60 moves in translation the two relatively movable contacts 22', 24 'of the breaking chamber 20' along an axis orthogonal to the translation axis of the first switch 10 ': 3D figure.
  • the displacement of the two contacts 22 ', 24' is effected by means of an actuating bar 44 'orthogonal to the bar 42', integral with the latter via the delay means 50 ', for example by means of a lug 54 'moving in a groove 52' of the first actuating bar 42 '.
  • the switch 30 'section is not solicited by the delay means 50'. From this point, the servo motor 60 'operates the contacts relatively slowly.
  • the fixed contact 32 'of the disconnector 30' is integral with the fixed contact 12 'of the first switch; the second contact 34 'of the disconnector 30' is relatively movable by pivoting about an axis 36 '.
  • the actuating means 46 'of the contacts 32', 34 'of this switch 30' are integral with the first bar 42 '; moreover, at the pivot 36 ', the movable contact 34' comprises delay means 56 'in the form of a groove complementary to a lug of the actuating bar 46' but allowing relative movement before driving by the bar 46 'of the contact 34' rotating about its axis 36 ': finally, as shown in Figure 3F, the section is completed.
  • the disconnector 30 ' can also move in a "horizontal" plane, that is to say, in the frame shown, by pivoting about a parallel axis 36' at one of the translation axes of the contacts of the other two switches 10 ', 20'.
  • the reference 110 represents the curve of the opening stroke of the first contact 10
  • the reference 120 represents the opening stroke of the second switch 20
  • the reference 130 the opening curve of the third switch 30.
  • the curve 110 has a steep slope portion 132 and a portion 134 of a relatively smaller slope.
  • the part 132 corresponds to the part of the cycle during which the servomotor 40 or 60 'actuates the synchronization means relatively quickly and the part 134 corresponds to the second part of the opening cycle of the isolating circuit-breaker during which the servo-motor actuates relatively slowly these same means of synchronization.
  • the part 132 of the curve 110 corresponds to an opening speed of 2 m / s while the part 134 of this same curve corresponds to an opening speed of 0.6m / s.
  • the opening speed is more than three times greater during the relatively fast opening cycle portion than during the relatively slow opening cycle portion.
  • the transition point 135 between the two parts of the curve is located substantially at half the opening stroke of the first switch 10.
  • the opening 136 of the cut-off switch 20 is made substantially towards the end of the fast opening period and the slope of the portion 136 is substantially equal to the slope of the portion 132, that is to say that it corresponds to a speed of approximately two s, in the example.
  • a certain delay is expected, for example about ten milliseconds as represented by the line segment 138 before the opening of the third isolating switch 30.
  • the first switch traveled substantially two-thirds of its opening stroke.
  • the opening of the disconnector switch 30 is then performed relatively quickly, as shown by the slope 140 of the curve 120, that is to say at a speed of about 2m / s and this although at this time the servo motor actuates relatively slowly the opening of the first contact.
  • the relatively rapid opening of the third switch is obtained by the construction of the synchronization means, for example by the ratio of the lever arms 42 and 56 (see Figure 2).

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Motor And Converter Starters (AREA)
EP07107906.5A 2006-05-12 2007-05-10 Trennschalter für einen Wechselstromschalter, der von einem Servomotor betätigt wird Active EP1855300B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0651709A FR2901055B1 (fr) 2006-05-12 2006-05-12 Disjoncteur sectionneur d'alternateur actionne par un servo-moteur

Publications (3)

Publication Number Publication Date
EP1855300A2 true EP1855300A2 (de) 2007-11-14
EP1855300A3 EP1855300A3 (de) 2009-03-04
EP1855300B1 EP1855300B1 (de) 2015-08-19

Family

ID=37606890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07107906.5A Active EP1855300B1 (de) 2006-05-12 2007-05-10 Trennschalter für einen Wechselstromschalter, der von einem Servomotor betätigt wird

Country Status (5)

Country Link
US (1) US7705262B2 (de)
EP (1) EP1855300B1 (de)
JP (1) JP5038016B2 (de)
CN (1) CN101086924B (de)
FR (1) FR2901055B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546851A1 (de) * 2011-07-12 2013-01-16 Alstom Technology Ltd Hochspannungsunterbrechungsvorrichtung in einem Stromnetz
CN103489696A (zh) * 2013-08-30 2014-01-01 宁波鑫鑫鑫寅电气有限公司 一种10kV箱型内置隔离开关的双断口真空断路器结构

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2950729B1 (fr) 2009-09-29 2016-08-19 Areva T&D Sas Enroulement pour contact d'ampoule a vide a moyenne tension a coupure d'arc amelioree, ampoule a vide et disjoncteur, tel qu'un disjoncteur sectionneur d'alternateur associes
FR2957450B1 (fr) * 2010-03-09 2012-04-20 Areva T & D Sas Disjoncteur hybride utilisant un interrupteur avec retour sur fermeture
US8885327B2 (en) * 2010-06-03 2014-11-11 Mitsubishi Electric Corporation Switchgear
FR2985081B1 (fr) 2011-12-21 2015-03-06 Alstom Technology Ltd Dispositif de protection contre les particules engendrees par un arc electrique de commutation
FR2996352B1 (fr) 2012-10-02 2014-10-31 Alstom Technology Ltd Dispositif de contact electrique de type doigt de contact a fort courant nominal
FR2999331B1 (fr) * 2012-12-12 2019-05-31 Alstom Technology Ltd Appareillage de coupure de courant ameliore
CN104319166B (zh) * 2014-11-12 2016-05-18 沈阳华德海泰电器有限公司 一种采用连接母排实现负载侧外接地的三工位真空开关
US11017967B2 (en) * 2019-06-27 2021-05-25 EMA Electromechanics, Inc. Distribution grounding switch to support distributed energy resources

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US3590186A (en) * 1968-12-19 1971-06-29 Allis Chalmers Mfg Co Vacuum interrupter having series connected resistor and shunting means for the latter
WO1997008723A1 (fr) * 1995-08-31 1997-03-06 Schneider Electric S.A. Disjoncteur hybride a haute tension
WO2000005735A1 (en) * 1998-07-24 2000-02-03 Abb Trasmissione & Distribuzione Spa Actuation and control device for high- and medium-voltage circuit breakers
EP1117114A2 (de) * 2000-01-11 2001-07-18 Hitachi, Ltd. SF6-Leistungsschalter parallel zu einer Vakuumschalter-Widerstands-Kombination
DE10016950A1 (de) * 2000-04-05 2001-10-11 Abb Hochspannungstechnik Ag Zu Verfahren zum Abschalten eines Kurzschlussstroms im generatornahen Bereich
EP1310970A1 (de) * 2001-11-09 2003-05-14 ABB Schweiz AG Hybridleistungsschalter mit einem Getriebe

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FR2655766B1 (fr) * 1989-12-11 1993-09-03 Merlin Gerin Disjoncteur hybride moyenne tension.
FR2763171B1 (fr) 1997-05-07 1999-07-09 Gec Alsthom T & D Sa Disjoncteur avec sectionneur
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ITMI981102A1 (it) * 1998-05-19 1999-11-19 Abb Adda S P A Dispositivo di comando e controllo di organi di manovra elettrica
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FR2826503B1 (fr) * 2001-06-25 2003-09-05 Alstom Chambre de coupure avec ampoule a vide
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3590186A (en) * 1968-12-19 1971-06-29 Allis Chalmers Mfg Co Vacuum interrupter having series connected resistor and shunting means for the latter
WO1997008723A1 (fr) * 1995-08-31 1997-03-06 Schneider Electric S.A. Disjoncteur hybride a haute tension
WO2000005735A1 (en) * 1998-07-24 2000-02-03 Abb Trasmissione & Distribuzione Spa Actuation and control device for high- and medium-voltage circuit breakers
EP1117114A2 (de) * 2000-01-11 2001-07-18 Hitachi, Ltd. SF6-Leistungsschalter parallel zu einer Vakuumschalter-Widerstands-Kombination
DE10016950A1 (de) * 2000-04-05 2001-10-11 Abb Hochspannungstechnik Ag Zu Verfahren zum Abschalten eines Kurzschlussstroms im generatornahen Bereich
EP1310970A1 (de) * 2001-11-09 2003-05-14 ABB Schweiz AG Hybridleistungsschalter mit einem Getriebe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546851A1 (de) * 2011-07-12 2013-01-16 Alstom Technology Ltd Hochspannungsunterbrechungsvorrichtung in einem Stromnetz
FR2977972A1 (fr) * 2011-07-12 2013-01-18 Alstom Grid Sas Dispositif interrupteur pour haute tension dans un reseau electrique
CN103489696A (zh) * 2013-08-30 2014-01-01 宁波鑫鑫鑫寅电气有限公司 一种10kV箱型内置隔离开关的双断口真空断路器结构

Also Published As

Publication number Publication date
EP1855300A3 (de) 2009-03-04
FR2901055B1 (fr) 2008-07-04
FR2901055A1 (fr) 2007-11-16
CN101086924A (zh) 2007-12-12
JP5038016B2 (ja) 2012-10-03
EP1855300B1 (de) 2015-08-19
US20070262055A1 (en) 2007-11-15
JP2007305590A (ja) 2007-11-22
CN101086924B (zh) 2011-08-10
US7705262B2 (en) 2010-04-27

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