EP0022535A1 - Hochspannungs-Leistungsschalter - Google Patents

Hochspannungs-Leistungsschalter Download PDF

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Publication number
EP0022535A1
EP0022535A1 EP80103855A EP80103855A EP0022535A1 EP 0022535 A1 EP0022535 A1 EP 0022535A1 EP 80103855 A EP80103855 A EP 80103855A EP 80103855 A EP80103855 A EP 80103855A EP 0022535 A1 EP0022535 A1 EP 0022535A1
Authority
EP
European Patent Office
Prior art keywords
locking
circuit breaker
voltage circuit
breaker according
switching
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
EP80103855A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0022535B1 (de
Inventor
Dietrich Hoffmann
Karl Dr. Kriechbaum
Lothar Kubetzek
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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
Priority claimed from DE2928694A external-priority patent/DE2928694C2/de
Priority claimed from DE19803020841 external-priority patent/DE3020841C2/de
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0022535A1 publication Critical patent/EP0022535A1/de
Application granted granted Critical
Publication of EP0022535B1 publication Critical patent/EP0022535B1/de
Expired 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
    • H01H33/16—Impedances connected with contacts
    • H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch

Definitions

  • the invention relates to a high-voltage circuit breaker according to the preamble of claim 1.
  • damping resistors In the case of electrical circuit breakers for very high operating voltages, it is known to reduce the overvoltages that occur especially when switching on long, unloaded lines by using damping resistors.
  • the damping resistances are parallel to the main switching sections. When switching on, the damping resistors (switch-on resistors) are switched on shortly before the main switching paths are closed by assigned auxiliary switching paths (isolating switches).
  • the first task is to switch on the switch-on resistor parallel to the main switching path about 10 ms before the main switching paths are switched on by the auxiliary switching path.
  • the switch When the switch is subsequently switched off, on the other hand, it must be ensured that the resistance current path is switched off in good time before the main contacts are disconnected.
  • This second task can basically be solved by either immediately after switching on the auxiliary switching section automatically (regardless of whether there is already a switch-off command for the main switching section) or by first keeping the auxiliary switching section closed and only switching off in time when the switch is switched off externally.
  • a high-voltage circuit breaker of the type mentioned in the introduction, in which the auxiliary switching path switches off again immediately after it has been switched on, is known from DE-AS 21 08 915.
  • the auxiliary switching point has a spring acting in the opening direction and is actuated by a crank via a rod with an elongated hole with a crank pin, the free path of which is limited depending on the position.
  • This position-dependent releasable connection ensures that the auxiliary switching point is opened again immediately after the main switching point is closed, because the crank pulls the switching pin back after the extended position has been exceeded, and at the end of the pivoting movement the connection between the drive and the auxiliary switching point by unlocking the elongated hole is released so that the spring can bring the switching pin into the switch-off end position.
  • the main control point remains closed regardless of this process.
  • the solution according to the invention is thus based on the second basic solution, in which the auxiliary switching path initially remains closed and only switches off in good time when the switch is switched off from the outside.
  • the auxiliary switching section is rigidly coupled to the main switching section via a lever system.
  • the translation of this lever system on the one hand and the contact spacing (and the contact strokes derived from it) of the main switching section and auxiliary switching section on the other hand are selected so that when the switch is switched on, contact is made earlier in the auxiliary switching section than in the main switching section.
  • the spring acts in a completely different way in the solution according to the invention than in the known switch, insofar as it does not contribute to the switching-off process, it can be made very small. Accordingly, the auxiliary switching path, in particular also the locking and unlocking device, can be implemented very easily and without additional insulating parts on the switching pin of the auxiliary switching path.
  • an embodiment of the invention provides that the switching pin parts of the auxiliary switching path are two cylindrical tubes.
  • the spring can advantageously be arranged in the switching pin parts, which guide the spring.
  • the locking device has at least one lever which is attached to the switching pin part assigned to the drive lever and connected to it by means of pivot pins and which engages in at least one catch in the locking position, and that the unlocking device has at least one conical stop or has a conical ramp surface which (or which) pivots the locking lever in the unlocked position.
  • the locking device has an expandable locking ring which is arranged concentrically around the central axis of the switching pin; that a locking pin is arranged on the switching pin part assigned to the drive lever parallel to the axis of the switching pin, which engages in the locking position in a gap of the locking ring in order to hold it in the spread position; that a spring is provided which presses the locking pin in the direction of its locking position; and that the unlocking device has a stop which, when the locking pin strikes, brings it into the unlocking position, so that compression of the locking ring and thus unlocking is made possible.
  • the concentric arrangement of the locking device results in a very uniform load, which enables the individual parts of the locking device to be made particularly light.
  • a further embodiment of the invention provides that the locking device has at least one radially preloaded cam, which is fixedly connected to the contact piece part facing the counter contact and which interacts with at least one catch.
  • the switching pin part has longitudinal slots in the locking area for radial preloading of the cam, which enable elastic deformation.
  • the switching pin part itself is featured as a radial in a very advantageous manner tensioned element formed, which allows a very simple design of the locking device with few parts.
  • the stop for the switching pin for absorbing the kinetic energy of the switching pin has a buffer.
  • the buffer consists of an elastic plastic, in particular polyurethane.
  • the buffering can also take place pneumatically or by means of a mating contact, which is designed as a resilient pressure contact for buffering.
  • the counter-contact piece is disc-shaped and has a guide cylinder, on the outer wall of which a sliding contact transmits the current and moves a spring when switched on, buffering taking place between the disc-shaped part and the adjacent fixed surface.
  • the end face of the switching pin is convex and the opposite part of the mating contact is concave.
  • the radius of the end face of the switching pin is somewhat smaller than that of the opposite part of the mating contact.
  • Another embodiment of the invention provides that the contact surfaces are copper-plated.
  • the locking device has at least one locking element which is arranged on a part assigned to the drive lever in an axially positive and radially pivotable manner; that the switching pin facing the counter-contact has a locking element, behind which the locking element is locked Condition takes hold; and that the locking element has a first nose, which cooperates with the latching element in the unlocked position as a stop limiting the movement of the switching pin part, and a second nose, which cooperates with the latching element in the locked position as a driver.
  • this configuration of the locking device can also be used independently of the switches described above. With this configuration, a locking device is created which is very simple and light in construction and nevertheless in any case meets the operating requirements, the switching reliability being improved and the wear reduced, ie the possible number of switching operations being increased. In particular, the simple switching pin has small moving masses.
  • the switching pin part facing the counter contact is arranged telescopically on a tube.
  • Another embodiment of the invention provides that a plurality of locking elements are provided, which are segments of a longitudinally slotted, essentially tubular structure. With this configuration, a symmetrical arrangement is possible, which results in very advantageous load conditions.
  • a further embodiment of the invention provides that a ramp arranged in the path of movement of the locking element is provided between the lugs of the locking element, so that the locking element can be moved radially outward from the locking element.
  • the tube has an annular bead on which the locking elements with a correspondingly shaped recess are arranged to be radially movable but axially form-fitting.
  • This Ausge staltung contains a simple in construction and manufacture and very reliable connection between the tube and the locking elements.
  • Another embodiment provides that the recess is arranged adjacent to the second nose.
  • the locking elements are resiliently biased in the radial direction. According to a further embodiment, this pretension is expediently applied by a toroidal spring which is arranged in recesses in the locking elements.
  • the locking elements have an additional ramp, the movement path of which runs over a stop from which the locking elements are moved radially out of their locking position.
  • a groove is provided at this end in which a steel ring holding the locking elements is arranged.
  • a control element is arranged along the movement path of the locking elements, which control element has a control curve which e.g. is designed by means of ramps so that a radial movement of the locking elements is only possible in certain desired positions.
  • the control element is expediently ring-shaped, which results in a uniform load.
  • the stop surrounds the part in a ring.
  • the switching pin consists of titanium or an aluminum alloy.
  • the part assigned to the drive lever is expediently tubular, since the locking elements can advantageously be arranged in such a tube.
  • a switching pin 24 of the auxiliary switching path 20 has at least two parts 24a, 24b which can be telescoped against one another against the force of a spring 25; these switching pin parts 24a, 24b are advantageously tubular.
  • a stop 26 is provided on the mating contact 32 in order to limit the stroke of the switching pin part 24b immediately after the auxiliary switching path 20 contacts.
  • This stop 26 for the switching pin part 24b has a buffer 28 for absorbing the kinetic energy of the switching pin part 24b.
  • the buffer 28 suitably consists of an elastic plastic, in particular polyurethane ( Figures 1, 2). In one configuration, the buffer is formed by the mating contact 32, which is designed as a resilient pressure contact for buffering.
  • the mating contact 32 has a guide cylinder with a disk-shaped part 33 (FIG. 2), on the outer wall 34 of which a sliding contact transmits the current and which, when switched on, shifts a spring 35, between the disk-shaped part 33 and the adjacent fixed surface buffering takes place.
  • the switching pin can advantageously also be buffered pneumatically (FIGS. 3, 3a, 3b).
  • the end face of the switching pin part 27b is convex and the corresponding opposite part of the mating contact 32 is concave.
  • the radius of curvature of the switching pin part 27b ' is larger than that of the counter contact 32', whereby an optimal buffering is achieved by the air cushion being formed.
  • the radius of curvature of the end face of the switching pin part 27b ′′ is, conversely, somewhat smaller than that of the opposite part of the counter-contact 32 ′′ in the embodiment shown in FIG. 0 In the area, good buffering is possible with good contacting at the same time.
  • a locking device 60 is provided between the switching pin parts 24a, 24b, which locks the pushed-together switching pin parts with one another in the switched-on position.
  • the locking device 60 shown in FIG. 2 has at least one radially preloaded cam 62 which is fixedly connected to the contact piece part 24b facing the counter contact 32 and which interacts with at least one catch 64 provided on the contact piece part 24a.
  • the switching pin part 24b has longitudinal slots 66 in the locking area (only shown in FIGS. 2b and 2c), which allow an elastic deformation of the switching pin part 24b in the locking area.
  • this has a plurality of levers 52 which are connected to the switching pin part 24a assigned to the drive lever and which, in the locking position, engage in at least one catch 55 provided on the switching element part 24b.
  • a radially preloaded cam 62 is again provided on the switching piece part 24b, which interacts with the catch 64.
  • a radially preloaded cam 62 on the contact piece part 24b interacts with a catch 64b provided at one end of a double-armed lever.
  • An unlocking device 80 is provided in order to release the locking again at the end of the opening movement.
  • the unlocking device 80 shown in FIGS. 1 and 2 has a conical stop 82 which moves the cams 62 lying behind the catch 6.4 in the locked state in the radial direction and thereby releases the lock.
  • a conical stop 82a is again provided, which pivots the locking lever 52 outwards via a corresponding counter surface formed on the lever 52, so that it releases the catch 55.
  • a conical stop 82b is again provided which interacts with a one-armed lever 65b which has a conical counter surface.
  • the one-armed lever 65b is pressed inward and thereby moves the cam 62 inward in the radial direction, as a result of which the unlocking is canceled.
  • the double-armed lever 65c has a conical counter surface which interacts with the conical surface of the stop 82c, so that the lever 65c is pivoted counterclockwise when it hits the surface 82c, so that the catch 64c den Releases cam 62 and thereby releases the unlocking.
  • a locking device is provided, as is known per se from DE-PS 15 40 062 and DE-PS 27 08 546.
  • This locking device works with an expandable locking ring (piston ring locking).
  • the locking ring is arranged concentrically around the central axis of the switching pin 24.
  • a locking pin is arranged on the switching pin part 24b assigned to the drive lever parallel to the axis of the switching pin and engages in the locking position in a gap of the locking ring in order to hold it in the spread position.
  • a spring is provided to push the locking pin towards its locking position.
  • An unlocking device has a stop which, when the locking pin occurs, brings it into the unlocking position, so that a compression of the locking ring and thus unlocking is made possible.
  • the locking device 60 is actuated, as a result of which the two switching pin parts 24a, 24b are locked together in the pushed-together position.
  • the auxiliary switching path 20 remains in this state as long as the switch remains switched on.
  • the lever system 40 moves the switching pin 24 of the auxiliary switching path 20 - shortened in its effective length - simultaneously with the movement of the contacts 12 of the main switching path into the switch-off position.
  • the contact separation of the auxiliary switching path 24 occurs earlier than in the main switching path, as a result of which the current path of the resistor is cut in time.
  • the locked switching pin parts 24a, 24b are unlocked with the aid of the unlocking device 80 and the spring 25 relaxes, as a result of which the switching pin parts 24a, 24b are moved apart again.
  • the switch is then ready for activation.
  • the contact surfaces of the switching pin and mating contact made of steel are expediently copper-clad.
  • the locking device shown in FIGS. 4 to 6 has at least one locking element 92 which is connected to the part 116 associated with the drive lever of the switch (not shown) in a radially movable manner. The connection is made in a manner shown below.
  • the switching pin part 96 facing the mating contact 98 has a latching element 100, behind which the locking element 92 engages in the locked state.
  • the locking element 92 has a first nose 112, which interacts with the locking element 100 of the switching pin part 96 in the unlocked position as a stop, and a second nose 114 which interacts with the locking element 100 in the locked position as a driver.
  • a plurality of locking elements 92 are expediently provided, which are parts of a longitudinally slotted structure with an essentially tubular shape.
  • the locking element 92 is connected to a tubular part 116 which is moved axially by the drive lever (not shown) of the switch.
  • the tube 116 has an outwardly directed annular bead 120 on which the locking elements 92 are arranged with a correspondingly shaped recess 122 so as to be radially movable but axially form-fitting.
  • the recess 122 is arranged adjacent to the nose 114 of the locking element 92 and has an essentially U-shaped shape. Adjacent to the recess 122 there is a further recess 126 pointing outwards.
  • a toroidal spring 124 is arranged in this recess in order to generate a radial preload.
  • An additional ramp 128 adjoins the recess 126, the movement path of which runs over a fixed stop 130, by which the locking elements 92 are moved radially out of their locking position.
  • the ramp 128 is inclined outwards, so that a wedge pointing in the switch-on direction is formed between the tube 116 and the ramp 128, into which a fixed tubular stopper 130 penetrates during the return in order to move the locking element out of its locking position.
  • the locking elements 92 have a groove 132 at their end facing the mating contact 98, in which a steel ring 134 holding them together is arranged.
  • a control element 136 is arranged which has a control cam 138 which is designed in such a way that such a movement is only possible in the region of the positions in which a radial movement of the locking element 92 is desired.
  • control element 136 has ramps 138a, 138b which, when the locking device moves, press the locking elements 92 into their locking position.
  • the control element 136 expediently has the shape of a circumferential ring.
  • the switching pin part can be arranged to slide telescopically on a tube 94.
  • This tube 94 expediently simultaneously forms a sleeve for a spring 140 arranged in its interior, which protrudes into the appropriately tubular switching pin part 96 and which serves to move this switching pin part 96 and is also expediently used for carrying the current.
EP80103855A 1979-07-16 1980-07-07 Hochspannungs-Leistungsschalter Expired EP0022535B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2928694A DE2928694C2 (de) 1979-07-16 1979-07-16 Hochspannungs-Leistungsschalter
DE2928694 1979-07-16
DE19803020841 DE3020841C2 (de) 1980-06-02 1980-06-02 Hochspannungs-Leistungsschalter
DE3020841 1980-06-02

Publications (2)

Publication Number Publication Date
EP0022535A1 true EP0022535A1 (de) 1981-01-21
EP0022535B1 EP0022535B1 (de) 1983-02-16

Family

ID=25780007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103855A Expired EP0022535B1 (de) 1979-07-16 1980-07-07 Hochspannungs-Leistungsschalter

Country Status (2)

Country Link
EP (1) EP0022535B1 (zh)
DE (1) DE3062021D1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2953982A1 (fr) * 2009-12-15 2011-06-17 Areva T & D Sas Dispositif d'insertion d'une resistance dans un interrupteur a fort courant
EP2797095A1 (en) * 2013-04-22 2014-10-29 ABB Technology AG Tulip contact for circuit breaker
WO2019201486A1 (de) * 2018-04-18 2019-10-24 Siemens Aktiengesellschaft Hochspannungsleistungsschalter mit einschaltwiderstandsanordnung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE610740C (de) * 1935-03-15 Siemens Schuckertwerke Akt Ges Druckluftantrieb fuer Schubtrennschalter
DE1665995A1 (de) * 1967-07-19 1971-04-15 Siemens Ag Massearmer Kontakttraeger
DE1540062C (de) * 1971-05-27 Licentia Patent Verwaltungs GmbH, 6000 Frankfurt Verriegelungsvorrichtung, insbesondere fur druckmittelbetatigte Hochspannungs schaltgerate
DE2503081A1 (de) * 1974-01-31 1975-08-07 Merlin Gerin Hochspannungsschalter mit hilfsschaltkammern
DE2108915B2 (de) * 1971-02-12 1976-05-13 Siemens AG, 1000 Berlin und 8000 München Hochspannungs-leistungsschalter
CH579819A5 (zh) * 1974-11-22 1976-09-15 Bbc Brown Boveri & Cie
FR2309028A1 (fr) * 1975-04-25 1976-11-19 Merlin Gerin Mecanisme de commande pour chambre auxiliaire d'un disjoncteur haute tension
DE2708546A1 (de) * 1977-02-28 1978-08-31 Licentia Gmbh Autopneumatischer druckgasschalter
DE2755834A1 (de) * 1977-12-15 1979-06-21 Licentia Gmbh Elektrischer leistungsschalter mit einschaltwiderstaenden ii

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE610740C (de) * 1935-03-15 Siemens Schuckertwerke Akt Ges Druckluftantrieb fuer Schubtrennschalter
DE1540062C (de) * 1971-05-27 Licentia Patent Verwaltungs GmbH, 6000 Frankfurt Verriegelungsvorrichtung, insbesondere fur druckmittelbetatigte Hochspannungs schaltgerate
DE1665995A1 (de) * 1967-07-19 1971-04-15 Siemens Ag Massearmer Kontakttraeger
DE2108915B2 (de) * 1971-02-12 1976-05-13 Siemens AG, 1000 Berlin und 8000 München Hochspannungs-leistungsschalter
DE2503081A1 (de) * 1974-01-31 1975-08-07 Merlin Gerin Hochspannungsschalter mit hilfsschaltkammern
CH579819A5 (zh) * 1974-11-22 1976-09-15 Bbc Brown Boveri & Cie
FR2309028A1 (fr) * 1975-04-25 1976-11-19 Merlin Gerin Mecanisme de commande pour chambre auxiliaire d'un disjoncteur haute tension
DE2708546A1 (de) * 1977-02-28 1978-08-31 Licentia Gmbh Autopneumatischer druckgasschalter
DE2755834A1 (de) * 1977-12-15 1979-06-21 Licentia Gmbh Elektrischer leistungsschalter mit einschaltwiderstaenden ii

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2953982A1 (fr) * 2009-12-15 2011-06-17 Areva T & D Sas Dispositif d'insertion d'une resistance dans un interrupteur a fort courant
EP2797095A1 (en) * 2013-04-22 2014-10-29 ABB Technology AG Tulip contact for circuit breaker
WO2019201486A1 (de) * 2018-04-18 2019-10-24 Siemens Aktiengesellschaft Hochspannungsleistungsschalter mit einschaltwiderstandsanordnung
US11587748B2 (en) 2018-04-18 2023-02-21 Siemens Energy Global GmbH & Co. KG High-voltage power switch with closing resistor arrangement

Also Published As

Publication number Publication date
DE3062021D1 (en) 1983-03-24
EP0022535B1 (de) 1983-02-16

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