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EP0917721B1 - Installation de commutation isolee par sf 6 pour reseaux de distribution electrique - Google Patents

Installation de commutation isolee par sf 6 pour reseaux de distribution electrique Download PDF

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Publication number
EP0917721B1
EP0917721B1 EP97938873A EP97938873A EP0917721B1 EP 0917721 B1 EP0917721 B1 EP 0917721B1 EP 97938873 A EP97938873 A EP 97938873A EP 97938873 A EP97938873 A EP 97938873A EP 0917721 B1 EP0917721 B1 EP 0917721B1
Authority
EP
European Patent Office
Prior art keywords
switch
quenching
contact
phases
load
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
EP97938873A
Other languages
German (de)
English (en)
Other versions
EP0917721A1 (fr
Inventor
Rolf Dirks
Michael Dr.-Ing. Kurrat
Bruno Dr.-Ing. Schemmann
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.)
Felten and Guilleaume AG
Original Assignee
Felten and Guilleaume 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 Felten and Guilleaume AG filed Critical Felten and Guilleaume AG
Publication of EP0917721A1 publication Critical patent/EP0917721A1/fr
Application granted granted Critical
Publication of EP0917721B1 publication Critical patent/EP0917721B1/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
    • 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
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • 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
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H33/187—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet comprising a hollow annular arc runner and a central contact between which a radially drawn arc rotates
    • 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
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container

Definitions

  • the invention relates to an SF 6 gas-insulated switchgear for distribution networks with switch disconnector cable panels and a switch disconnector-fuse combination or a circuit breaker with a isolating section (circuit breaker) for transformer protection.
  • Switchgear of this type is known.
  • network distribution stations are usually Medium voltage switchgear with three panels, two of which are used Ring cables connected and a control panel with high voltage fuses or a circuit breaker for a transformer feeder.
  • SF 6 gas-insulated switch disconnector arrangement in which the switch disconnectors are arranged in an encapsulated housing filled with sulfur hexafluoride (SF 6 ), a fixed and movable contact piece, an earth contact, and one out of each phase
  • SF 6 sulfur hexafluoride
  • Extinguishing plates have existing extinguishing device, and in which the fixed contact pieces of the same phases are attached directly to a busbar and the extinguishing devices are each arranged next to them directly on the busbar.
  • Arc extinguishing devices Arranged on the phases of the load break switch or the circuit breaker Arc extinguishing devices have the task of Quickly extinguish the arc when you turn it off by opening the Contacts and the evaporation of the last metal bridge caused by the heat of electricity, to ensure the switching ability of the switches.
  • AC comes it depends on the charge carriers in the short time between a zero current crossing and effectively reduce the oscillation of the recurring voltage.
  • Extinguishing devices for electrical switching devices including quenching coils, in which the resulting arc is commutated and then the coil flowing current generates a magnetic field that causes the arc rotated and finally deleted.
  • EP 0 012 522 describes an electrical one Switchgear with quenching coils on the fixed contacts.
  • EP 0 021 577, EP 0 058 007 and EP 0 313 106 B1 have electrical switching devices with quenching coils as arc extinguishing devices to the subject.
  • the load-break switch of a switchgear panel is combined with a fuse attachment with high-voltage fuses with a striker, which may be encapsulated, the load-break switch being equipped with a storage drive with a trip memory which can be actuated by a striker of one of these fuses via a trigger linkage ,
  • the breaking capacity level of the nominal fuse current
  • the associated fulfillment of the isolating path conditions with regard to the quenching plate arrangement used as the extinguishing device.
  • Both the switch disconnector and the circuit breaker must do so be designed so that they meet the separation conditions, so depending have a required dielectric strength from the nominal voltage. As well both switches must be designed so that they ensure their switching ability, by checking the switching arc in the shortest possible way and Clear.
  • the generic switchgear comprises a plurality of switchgear panels with three-pole switch disconnectors and an earthing device, of which one switchgear panel is equipped with a switch disconnector designed as a transformer switch, the phases of which are combined with fuses, or can have a circuit breaker, and in which the fixed contacts of the phases L1, L2 and L3 are firmly connected to busbars, on which quenching devices for the individual phases are arranged, the quenching devices for phases L1, L2 and L3 of the switch designed as a transformer switch having a switch contact arrangement corresponding to the other switches, quenching coils and the quenching devices for the phases of the invention other isolating switches are known extinguishing chambers with quenching plates.
  • the isolating path conditions are met with a circuit breaker and the means for ensuring the switching ability - for those with switches with arcing chambers given spatial conditions and a corresponding switch contact arrangement -
  • their coil axis with that in the off position Switching contact encloses an obtuse angle on the fixed contact side and the free one End of the switch contact in the switch-off position in the area of the coil axis is that the coil radius is at least the distance between the in the off position located switch contact and the fixed contact corresponds and that the fixed contact side coil edge area a minimum distance to the fixed contact and the free end of the switching contact moved past.
  • the isolating conditions are met and the means to ensure the switching ability if the quenching coils arranged in this way and are designed so that their coil axis with the in the off position switch contact located on the fixed contact side at a right or obtuse angle and the quenching coils each take over the base point of the arc
  • the guiding element plays an essential role: it transports the between the Switching knife and the contact arcing along the guide element in the sink.
  • the arc remains very short due to the short distance, but quickly and safely reaches the inner path of the quenching coil.
  • the guiding element has hence the task of facing an arrangement of a switch disconnector a circuit breaker with a smaller quenching coil at a distance from the busbar contact and with this arrangement, changing the arc into the To enable quenching coil.
  • the arrangement of quenching coils on the transformer switch leads to one increased breaking capacity of the switchgear for a given unchanged Arrangement space, with the increased requirements for switch disconnector-fuse combinations or the elimination of short-circuit currents can be worn, and thus represents a significant technical advance represents.
  • the quenching coil and the fixed contact for the respective phase L1, L2 and L3 can expediently be arranged on a common cross member, the is connected to the busbar for the respective phase and to which the movable switch contact is pivotally arranged such that it from the at the switch-on position given in the fixed position in a parallel to the cross member Switch-off position and can be swiveled into an earthing position is.
  • the quenching coils can be arranged so that their coil axis with the in the switch-off position switch contact facing the fixed contact Includes an obtuse angle, preferably 165 ° to 175 °, or is arranged perpendicular to the switch contact in the switch-off position.
  • the fixed contact is in the center of the Quenching coil, and the guide element is directed into the inside of the coil.
  • Switch-off currents can free ends of the moving Switch contacts and the tear-off edges of the fixed contacts with caps and burn-off strips be provided, the more erosion-resistant material than the respective contact material consist.
  • the quenching coils and the quenching chambers with one that can be inserted into the housing, which is initially open on the back Be connected to the assembly.
  • This assembly can be made from the busbars, the fixed contacts attached to these with cross beams, supports for the cross beams and holding devices can be formed for arrangement on the housing.
  • the three for Grounding contacts belonging to the grounding device are on the switch shafts attached.
  • the gas-insulated switchgear consists of a gas-tight housing 1, in the three panels I, II and III, each with a three-pole switch disconnector and a grounding device.
  • the control panel I houses one designed as a transformer switch disconnector, whose phases L1, L2 and L3 are combined with fuses (not shown) via bushings 2.
  • the switch disconnectors have switch blades 3 as movable switching contacts are designed as a double knife.
  • the switching blades 3 are at rest for phase L2 each directly on the respective bushings 2, for which phases are L1 and L3 special switch blade support used with the associated bushings 2 are connected by bearing pieces (not shown).
  • Implementations 2 are all located on the front 4 of the housing 1.
  • the actuation of the Switching knife 3 takes place via a switch shaft mounted on the walls of the housing 1 5, the lever 6 and a coupling rod 7 with the switching knife 3rd connected is.
  • a ground contact 8 is connected directly to the switch shaft 5.
  • the switching knife 3 can take three positions. When switched on the respective switch blade 3 contacts one firmly connected to a busbar 9 Fixed contact 10. The switch-on state is shown in panel III. in the the switched-off knife 3 is brought into a position, which lies between the fixed contact 10 and the ground contact 8. This switching state is shown in panel II. The respective contacts in the grounded state Switching knife 3 the ground contact 8, shown in panel I.
  • the housing 1 there are three busbars 9, on each of which the fixed contacts 10 of the respective phases L1, L2 and L3 of the switch disconnectors are arranged. Furthermore, extinguishing devices are on the busbars 9 for each phase L1, L2 and L3 arranged, of which the extinguishing devices at the phases of Fuse-free switch-disconnectors in cubicles II and III equipped with extinguishing plates Arcing chambers 12 and the extinguishing devices at the phases of the Fuses combined switch disconnector of the control panel I quenching coils 13a are. These (13a) and the fixed contacts (10) are on one with the respective busbar 9 connected cross member 14 to which the switching knife 3 in Switch-off position are aligned in parallel.
  • the quenching coils 13a are arranged in such a way that their coil axis A with the switch contact located in the switch-off position 3 on the side facing the fixed contact 10 an obtuse angle ⁇ of about 165 ° (Fig. 2).
  • the quenching coils 13a and the quenching chambers 12 are connected to the busbars 9, the arranged on cross members 14 and via this with the busbars 9th firmly connected fixed contacts 10, supports 15 for the cross member 14, holding devices 16 and struts 18 for arrangement on the housing 1 to form a structural unit joined together, which can be inserted into the housing 1 via the rear side 19, before it is sealed gastight.
  • the quenching coils 13a each have an electrical connection to the end of the coil winding connected guide plate 17 in the immediate vicinity of the respective fixed contact 10 on, which has the width of a switching knife 3 and tangential to the trajectory the free end of the same is arranged.
  • Fig. 2 shows the three busbars 9 and those on busbar sections 9a arranged quenching coils 13. These are on the cross beams 14, the also carry the fixed contacts 10, firmly arranged, the cross member in turn supported on the housing via the supports 15, holding devices 16 and struts 18 are. It can be seen that the control panel I (circuit breaker) is not a larger one Arrangement space in the housing 1 as the panels II and III claimed.
  • Fig. 3 the arrangement of an erase coil 13a is shown enlarged on one phase.
  • the quenching coil 13a is held on a tab 20, both with the start of the winding the quenching coil 13a and with the cross member 14 and thus with the Busbar 9 is electrically coupled.
  • Fig. 4 shows an alternative quenching coil arrangement for the same switchgear, at the quenching coils 13a are arranged on a tab 21 such that the coil axis A with the switch blade 3 in the switched-off position a right one Includes angle ⁇ , the quenching coils 13a enclosing the fixed contacts 10.
  • the quenching coils 13a in turn have an electrical connection to the end of the coil winding connected baffle 17 in the immediate vicinity of the respective fixed contact 10 on, which has the width of a switching knife 3 and tangential to the path of movement the free end of the same is arranged.
  • the free ends of the switching knife 3 can in the illustrated embodiments the switchgear according to the invention for higher cutoff currents to increase the erosion resistance with caps 22 and the fixed contacts 10 with erosion bars 23 be provided.
  • the material of the caps 22 and the erosion bars 23 is more resistant to erosion as the base material of the respective contact 3 or 10 (Fig.5).

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Organic Insulating Materials (AREA)

Claims (6)

  1. Installation de distribution électrique isolée par du gaz SF6 pour réseaux de distribution électrique, qui comporte un boítier étanche au gaz destiné à plusieurs panneaux de couplage, comportant chacun un sectionneur à coupure en charge tripolaire et un dispositif de mise à la terre, l'un des panneaux de couplage étant doté d'un sectionneur à coupure en charge conformé en sectionneur de transformateur dont les phases sont combinées avec des dispositifs de sécurité, ou pouvant comporter un sectionneur à coupure en charge de puissance, qui comporte des passages ménagés dans les parois longitudinales du boítier et appropriés pour le support des contacts de commutation mobiles et le raccordement des câbles et/ou des dispositifs de sécurité, et qui comporte des arbres de pivot de sectionneur montés sur ceux-ci et des barres collectrices pour les contacts fixes des phases L1, L2 et L3 et des dispositifs de soufflage d'étincelles reliés directement aux barres collectrices pour les phases individuelles, les dispositifs de soufflage d'étincelles du sectionneur à coupure en charge non utilisé comme sectionneur de transformateur étant des chambres de soufflage d'étincelles dotées de lames de soufflage d'étincelles, caractérisée en ce que les dispositifs de soufflage d'étincelles pour les phases L1, L2 et L3 du sectionneur conformé en sectionneur de transformateur comportant un agencement de contacts de commutation correspondant aux autres commutateurs sont des bobines souffleuses d'étincelles (13 ; 13a) dans un agencement remplissant les conditions pour réaliser un espace intercontact à l'état hors circuit, et comportent des moyens qui sécurisent la commutabilité,
    les bobines souffleuses d'étincelles (13) pour le sectionneur à coupure en charge de puissance étant agencées et conformées de telle façon que :
    l'axe (A) des bobines fasse, du côté du contact fixe, un angle obtus (α) avec le contact de commutation (3) en position déconnectée et l'extrémité libre du contact de commutation (3) soit située dans la région de l'axe (A) des bobines et le rayon de la bobine corresponde au moins à la distance séparant le contact de commutation (3) et le contact fixe (10) ;
    et que la région du bord des bobines du côté du contact fixe soit à une distance minimale par rapport au contact fixe (10) et à l'extrémité libre du contact de commutation (3) passant devant celui-ci,
    et les bobines souffleuses d'étincelles (13a) pour le sectionneur à coupure en charge étant agencées et conformées de telle façon que :
    l'axe (A) des bobines fasse, du côté du contact fixe, un angle droit ou obtus (β; α) avec le contact de commutation (3) dans la position déconnectée,
    et que celles-ci comportent chacune un élément conducteur recevant une racine d'arc, qui s'étend jusqu'au voisinage immédiat du contact fixe (10) et qui est agencé tangentiellement à la trajectoire de l'extrémité libre du contact de commutation (3).
  2. Installation de distribution électrique selon la revendication 1, caractérisée en ce que les bobines souffleuses d'étincelles (13 ; 13a) et le contact fixe (10) pour la phase correspondante L1, L2 et L3 sont agencés au niveau d'une équerre (14), reliée à la barre collectrice correspondante (9), par rapport à laquelle le contact de commutation mobile (3) est dirigé parallèlement en position déconnectée.
  3. Installation de distribution électrique selon la revendication 2, caractérisée en ce que l'angle obtus (α) est compris entre 165° et 175°.
  4. Installation de distribution électrique selon la revendication 2, caractérisée en ce que les bobines souffleuses d'étincelles (13a) sont agencées et conformées de telle façon que celles-ci enferment les contacts fixes (10), et que l'élément conducteur (17) soit dirigé vers l'intérieur des bobines.
  5. Installation de distribution électrique selon la revendication 1, caractérisée en ce que les extrémités libres des contacts de commutation mobiles (3) sont dotées de capuchons (22), et les contacts fixes (10) sont dotés au niveau du bord de rupture, de barres pare-étincelles (23) constituées d'une matière plus résistante à l'étincelage que la matière de contact correspondante.
  6. Installation de distribution électrique selon la revendication 1, caractérisée en ce que les bobines souffleuses d'étincelles (13 ; 13a) et les chambres de soufflage d'étincelles (12) sont reliées à un module qui est enfichable dans le boítier (1) préalablement ouvert au dos (19), lequel module est constitué des barres collectrices (9), des contacts fixes (10) fixés à celles-ci par des équerres (14), d'isolateurs (15) pour les équerres (14) et de dispositifs de support (16) en vue de l'agencement sur le boítier (1), et en ce que les trois contacts (8) de mise à la terre appartenant au dispositif de mise à la terre sont fixés sur l'arbre de pivot (5) du sectionneur.
EP97938873A 1996-08-07 1997-08-04 Installation de commutation isolee par sf 6 pour reseaux de distribution electrique Expired - Lifetime EP0917721B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19631817 1996-08-07
DE19631817A DE19631817C1 (de) 1996-08-07 1996-08-07 SF¶6¶-gasisolierte Schaltanlage für Verteilernetze
PCT/EP1997/004241 WO1998006120A1 (fr) 1996-08-07 1997-08-04 Installation de commutation isolee par sf6 pour reseaux de distribution electrique

Publications (2)

Publication Number Publication Date
EP0917721A1 EP0917721A1 (fr) 1999-05-26
EP0917721B1 true EP0917721B1 (fr) 2002-04-10

Family

ID=7801988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97938873A Expired - Lifetime EP0917721B1 (fr) 1996-08-07 1997-08-04 Installation de commutation isolee par sf 6 pour reseaux de distribution electrique

Country Status (11)

Country Link
EP (1) EP0917721B1 (fr)
KR (1) KR100297622B1 (fr)
CN (1) CN1205633C (fr)
AT (1) ATE216126T1 (fr)
BR (1) BR9710807A (fr)
CZ (1) CZ296238B6 (fr)
DE (1) DE19631817C1 (fr)
ES (1) ES2174281T3 (fr)
NO (1) NO317118B1 (fr)
PL (1) PL187349B1 (fr)
WO (1) WO1998006120A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813217C1 (de) * 1998-03-26 1999-11-25 Felten & Guilleaume Ag Löschspule für gasisolierte Lasttrennschalter
DE10131018C1 (de) * 2001-06-27 2003-01-23 Siemens Ag Leistungsschalter
DE102008031468B3 (de) * 2008-07-01 2010-04-08 Siemens Aktiengesellschaft Lasttrennschalter mit einer Lichtbogenlöscheinrichtung
DE102011004421A1 (de) * 2011-02-18 2012-08-23 Schneider Electric Sachsenwerk Gmbh Kühlvorrichtung für eine elektrische Schaltanlage insbesondere der Mittel- oder Hochspannungstechnik
CN102646965A (zh) * 2011-02-22 2012-08-22 李彬雄 一种智能开关及采用该智能开关的配电网系统
CN103198957A (zh) * 2013-03-19 2013-07-10 启东德佳电器配件有限公司 一种改进的低压隔离开关
CN107910225A (zh) * 2017-11-24 2018-04-13 周敬存 一种用于环网柜上的灭弧装置及其灭弧方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE6006T1 (de) * 1978-11-28 1984-02-15 South Wales Switchgear Limited Elektrische schaltanlage.
ATE6709T1 (de) * 1979-05-25 1984-03-15 South Wales Switchgear Limited Elektrisches schaltgeraet.
EP0058007B1 (fr) * 1981-02-03 1986-06-04 South Wales Switchgear Limited Appareillage de commutation électrique
FI78195C (fi) * 1986-10-27 1989-06-12 Stroemberg Oy Ab Stroembrytare.
EP0313106B1 (fr) * 1987-03-12 1992-12-16 Merlin Gerin Limited Installation de commutation électrique
DE3820489A1 (de) * 1988-06-16 1989-12-21 Felten & Guilleaume Energie Gekapselte lasttrennschalteranordnung
DE4011397C2 (de) * 1990-04-09 1995-08-03 Felten & Guilleaume Energie Gasisolierte Schaltanlage für den Einsatz in Netzverteilerstationen
US5464956A (en) * 1994-04-08 1995-11-07 S&C Electric Company Rotating arc interrupter for loadbreak switch

Also Published As

Publication number Publication date
DE19631817C1 (de) 1998-03-12
PL331466A1 (en) 1999-07-19
ES2174281T3 (es) 2002-11-01
CN1205633C (zh) 2005-06-08
ATE216126T1 (de) 2002-04-15
NO990532D0 (no) 1999-02-04
KR20000029814A (ko) 2000-05-25
CZ296238B6 (cs) 2006-02-15
KR100297622B1 (ko) 2001-09-29
WO1998006120A1 (fr) 1998-02-12
EP0917721A1 (fr) 1999-05-26
NO317118B1 (no) 2004-08-16
BR9710807A (pt) 2000-01-11
PL187349B1 (pl) 2004-06-30
CN1227663A (zh) 1999-09-01
CZ37999A3 (cs) 1999-05-12
NO990532L (no) 1999-02-04

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