EP0917721B1 - Sf6-gasisolierte schaltanlage für verteilernetze - Google Patents
Sf6-gasisolierte schaltanlage für verteilernetze Download PDFInfo
- 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
Links
Images
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
- Gas-Insulated Switchgears (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Organic Insulating Materials (AREA)
Description
- Fig. 1:
- eine erfindungsgemäße SF6-gasisolierte Schaltanlage in Draufsicht (Lasttrennschalter),
- Fig. 2:
- die Schaltanlage in Rückansicht (Leistungstrennschalter),
- Fig. 3:
- eine Phase des mit Sicherungen kombinierten Lasttrennschalters,
- Fig. 4:
- eine andere Ausführung einer Phase des mit Sicherungen kombinierten Lasttrennschalters und
- Fig. 5:
- eine andere Fest- und Schaltkontaktausführung bei einem Leistungstrennschalter.
Claims (6)
- SF6-gasisolierte Schaltanlage für Verteilernetze mit einem gasdichten Gehäuse für mehrere, jeweils einen dreipoligen Lasttrennschalter und eine Erdungsvorrichtung aufweisende Schaltfelder, von denen ein Schaltfeld mit einem als Transformatorschalter ausgebildeten Lasttrennschalter ausgerüstet ist, dessen Phasen mit Sicherungen kombiniert sind, oder einen Leistungstrennschalter aufweisen kann, mit für die Halterung von beweglichen Schaltkontakten und den Anschluß von Kabeln und/oder Sicherungen geeigneten Durchführungen an den Wänden der Längsseiten des Gehäuses und mit an diesen gelagerten Schalterwellen und mit Sammelschienen für die festen Kontakte der Phasen L1, L2 und L3 und direkt mit den Sammelschienen verbundenen Löscheinrichtungen für die einzelnen Phasen, wobei die Löscheinrichtungen der nicht als Transformatorschalter eingesetzten Lastrennschalter mit Löschblechen versehene Löschkammern sind, dadurch gekennzeichnet, daß die Löscheinrichtungen für die Phasen L1, L2 und L3 des als Transformatorschalter ausgebildeten Schalters mit einer den übrigen Schaltern entsprechenden Schaltkontaktanordnung Löschspulen (13; 13a) in einer im ausgeschalteten Zustand die Trennstreckenbedingungen erfüllenden Anordnung sind und Mittel aufweisen, die die Schaltfähigkeit sicherstellen,
wobei die Löschspulen (13) für den Leistungstrennschalter derart angeordnet und ausgebildet sind,daß deren Spulenachse (A) mit dem in Ausschaltposition befindlichen Schaltkontakt (3) festkontaktseitig einen stumpfen Winkel (α) einschließt und das freie Ende des Schaltkontaktes (3) im Bereich der Spulenachse (A) liegt und der Spulenradius mindestens dem Abstand zwischen dem Schaltkontakt (3) und dem Festkontakt (10) entsprichtund daß deren festkontaktseitiger Spulenkantenbereich einen minimalen Abstand zum Festkontakt (10) und dem freien Ende des vorbeibewegbaren Schaltkontaktes (3) aufweist,daß deren Spulenachse (A) mit dem in Ausschaltposition befindlichen Schaltkontakt (3) festkontaktseitig einen rechten oder stumpfen Winkel (β; α) einschließtund daß diese jeweils ein den Fußpunkt des Lichtbogens übernehmendes Leitelement (17) aufweisen, das bis in die unmittelbare Nähe des Festkontaktes (10) reicht und tangential zur Bewegungsbahn des freien Endes des Schaltkontaktes (3) angeordnet ist. - Schaltanlage nach Anspruch 1, dadurch gekennzeichnet, daß die Löschspulen (13; 13a) und der Festkontakt (10) für die jeweilige Phase L1, L2 und L3 an einem mit der jeweiligen Sammelschiene (9) verbundenen Querträger (14) angeordnet sind, zu dem der bewegliche Schaltkontakt (3) in Ausschaltposition parallel ausgerichtet ist.
- Schaltanlage nach Anlage 2, dadurch gekennzeichnet, daß der stumpfe Winkel (a) 165° bis 175° beträgt.
- Schaltanlage nach Anspruch 2, dadurch gekennzeichnet, daß die Löschspulen (13a) derart angeordnet und ausgebildet sind, daß diese die Festkontakte (10) umschließen, und daß das Leitelement (17) in das Spuleninnere gerichtet ist.
- Schaltanlage nach Anspruch 1, dadurch gekennzeichnet, daß die freien Enden der beweglichen Schaltkontakte (3) mit Kappen (22) und die Festkontakte (10) an der Abreißkante mit Abbrandleisten (23) aus einem abbrandfesterem Material als das jeweilige Kontaktmaterial versehen sind.
- Schaltanlage nach Anspruch 1, dadurch gekennzeichnet, daß die Löschspulen (13; 13a) und die Löschkammern (12) mit einer in das an der Rückseite (19) zunächst offene Gehäuse (1) einschiebbaren Baugruppe verbunden sind, die aus den Sammelschienen (9), den mit Querträgern (14) an diesen befestigten Festkontakten (10), Stützern (15) für die Querträger (14) und Haltevorrichtungen (16) zur Anordnung am Gehäuse (1) gebildet ist, und daß die drei zur Erdungsvorrichtung gehörenden Erdungskontakte (8) an den Schalterwellen (5) befestigt sind.
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 (de) | 1996-08-07 | 1997-08-04 | Sf6-gasisolierte schaltanlage für verteilernetze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0917721A1 EP0917721A1 (de) | 1999-05-26 |
EP0917721B1 true EP0917721B1 (de) | 2002-04-10 |
Family
ID=7801988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97938873A Expired - Lifetime EP0917721B1 (de) | 1996-08-07 | 1997-08-04 | Sf6-gasisolierte schaltanlage für verteilernetze |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0917721B1 (de) |
KR (1) | KR100297622B1 (de) |
CN (1) | CN1205633C (de) |
AT (1) | ATE216126T1 (de) |
BR (1) | BR9710807A (de) |
CZ (1) | CZ296238B6 (de) |
DE (1) | DE19631817C1 (de) |
ES (1) | ES2174281T3 (de) |
NO (1) | NO317118B1 (de) |
PL (1) | PL187349B1 (de) |
WO (1) | WO1998006120A1 (de) |
Families Citing this family (7)
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 |
DE202011110166U1 (de) * | 2011-02-18 | 2013-01-18 | Schneider Electric Sachsenwerk Gmbh | Kühivorrichtung für eine elektrische Schaltanlage insbesondere derMittel- und 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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2966587D1 (en) * | 1978-11-28 | 1984-03-01 | South Wales Switchgear | Electrical switchgear |
ATE6556T1 (de) * | 1979-05-25 | 1984-03-15 | South Wales Switchgear Limited | Elektrisches schaltgeraet des typs mit rotierendem bogen und doppelter unterbrechung. |
DE3271488D1 (en) * | 1981-02-03 | 1986-07-10 | South Wales Switchgear | Electrical switchgear |
FI78195C (fi) * | 1986-10-27 | 1989-06-12 | Stroemberg Oy Ab | Stroembrytare. |
ATE83586T1 (de) * | 1987-03-12 | 1993-01-15 | Merlin Gerin Ltd | Elektrische schaltanlage. |
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 |
-
1996
- 1996-08-07 DE DE19631817A patent/DE19631817C1/de not_active Expired - Fee Related
-
1997
- 1997-08-04 CZ CZ0037999A patent/CZ296238B6/cs not_active IP Right Cessation
- 1997-08-04 WO PCT/EP1997/004241 patent/WO1998006120A1/de active IP Right Grant
- 1997-08-04 BR BR9710807-3A patent/BR9710807A/pt not_active Application Discontinuation
- 1997-08-04 CN CNB971970599A patent/CN1205633C/zh not_active Expired - Fee Related
- 1997-08-04 EP EP97938873A patent/EP0917721B1/de not_active Expired - Lifetime
- 1997-08-04 ES ES97938873T patent/ES2174281T3/es not_active Expired - Lifetime
- 1997-08-04 AT AT97938873T patent/ATE216126T1/de not_active IP Right Cessation
-
1999
- 1999-02-04 KR KR1019997000954A patent/KR100297622B1/ko not_active IP Right Cessation
- 1999-02-04 NO NO19990532A patent/NO317118B1/no not_active IP Right Cessation
- 1999-02-05 PL PL97331466A patent/PL187349B1/pl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BR9710807A (pt) | 2000-01-11 |
KR20000029814A (ko) | 2000-05-25 |
CZ296238B6 (cs) | 2006-02-15 |
WO1998006120A1 (de) | 1998-02-12 |
NO990532L (no) | 1999-02-04 |
ATE216126T1 (de) | 2002-04-15 |
PL331466A1 (en) | 1999-07-19 |
NO317118B1 (no) | 2004-08-16 |
CN1227663A (zh) | 1999-09-01 |
ES2174281T3 (es) | 2002-11-01 |
EP0917721A1 (de) | 1999-05-26 |
PL187349B1 (pl) | 2004-06-30 |
CN1205633C (zh) | 2005-06-08 |
NO990532D0 (no) | 1999-02-04 |
CZ37999A3 (cs) | 1999-05-12 |
KR100297622B1 (ko) | 2001-09-29 |
DE19631817C1 (de) | 1998-03-12 |
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