EP1271590A1 - Hybridleistungsschalter für Hoch- oder Mittelspannung mit Vakuum und Gas - Google Patents

Hybridleistungsschalter für Hoch- oder Mittelspannung mit Vakuum und Gas Download PDF

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Publication number
EP1271590A1
EP1271590A1 EP02291495A EP02291495A EP1271590A1 EP 1271590 A1 EP1271590 A1 EP 1271590A1 EP 02291495 A EP02291495 A EP 02291495A EP 02291495 A EP02291495 A EP 02291495A EP 1271590 A1 EP1271590 A1 EP 1271590A1
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EP
European Patent Office
Prior art keywords
contact
contacts
switch
rod
vacuum
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
EP02291495A
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English (en)
French (fr)
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EP1271590B1 (de
Inventor
Michel Perret
Denis Dufournet
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Grid Solutions SAS
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Alstom SA
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Publication date
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Publication of EP1271590A1 publication Critical patent/EP1271590A1/de
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Publication of EP1271590B1 publication Critical patent/EP1271590B1/de
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    • 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
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H01H33/143—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc of different construction or type
    • 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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H01H2033/566—Avoiding the use of SF6
    • 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

Definitions

  • the invention relates to a hybrid type switching device for high or medium voltage.
  • the hybrid qualifier applies to the cut which is of mixed type in making two different cutting techniques cooperate.
  • hybrid a switch device which comprises a vacuum switch containing a first pair of arcing contacts and which also includes a gas switch comprising a second pair of arcing contacts.
  • a device of this type is known from US Pat. No. 3,038,980. It comprises a envelope filled with a dielectric gas and having a longitudinal axis, inside which are arranged the two switches electrically connected in series and to the exterior of which is arranged the control mechanism of the device.
  • the mechanism actuation of the contacts of the two switches is relatively simple, in the sense that one of the two contacts of the gas switch is integral with a movable contact which is attached to it adjacent to the vacuum switch.
  • the other contact of the gas switch is secured to a operating rod connected to the device control mechanism.
  • a mechanism to spring associated with a stop has the effect of keeping the contacts pressed against each other of the gas switch during the first part of their stroke when opening the device, until the vacuum switch contacts are separated by a distance determined.
  • the purpose of such a sequence for the separation of the contacts of the two pairs is to be able to delay the separation of the contacts of the second pair (gas switch) by compared to those of the first pair (vacuum switch).
  • the cut-off device high voltage hybrid combines a gas switch designed for high voltage standardized above 72.5 kV with a vacuum interrupter designed for an average normalized voltage less than 52 kV.
  • the switch unladen supports all the transient recovery voltage across the terminals of the break during the separation of its contacts.
  • the vacuum switch is only provided for withstand a recovery voltage which remains within the limits of the medium voltage.
  • a high voltage hybrid breaking device which would implement the sequence described above for the separation of the contacts could only cut the current after the separation of the two contacts of the gas switch. This operation implies a duration relatively long arc that a vacuum interrupter is not designed to support.
  • Another device of this type is known from patent application EP1109187.
  • the mobile contact of the vacuum interrupter is connected to a connecting rod, one end of which is movable in rotation, this end or big end being articulated on a crank pin of a flywheel which can be coupled or uncoupled from a toothed rod controlled in translation by the operating rod of the gas switch.
  • this device has certain drawbacks from a mechanical point of view.
  • it is necessary to exert sufficient force on the movable contact of the vacuum switch as long as current flow is authorized, so as to have a mutual pressure between the contact surfaces of the contacts of this switch which is greater than a given value to resist electrodynamic forces during the current flow.
  • the steering wheel of the device must therefore be fitted with an elastic system of recall which allows to exert this force required on the movable contact of the vacuum switch.
  • the transmission of the movement of the operating rod of the gas switch to the vacuum interrupter is done by a connecting rod whose axis is oblique to the axis of translation of the movable contact of this vacuum switch. This results in constraints important transverse on the vacuum switch, which can limit its endurance mechanical.
  • EP1117114 which has in particular compared to the previous device the advantage that the moving contact of the vacuum interrupter is always subjected to directed forces only along the direction of the longitudinal axis of this switch.
  • elastic means to springs are provided to maintain mutual pressure between the contacts of the vacuum switch as long as this switch is closed.
  • the separation movement of the vacuum switch contacts is controlled by the operation of the gas switch, which means that the contacts of the switch must not be separated when the contacts of the gas switch open. It is necessary for this device to have such a delayed contact separation sequence in order to cause the passage of current by zero before the vacuum switch ensures only the cut.
  • the device is used exclusively as a generator circuit breaker, and by therefore the gas switch is only present to decrease the percentage of asymmetry current.
  • the invention aims to remedy the drawbacks or limitations of the techniques by proposing a hybrid switching device for high or medium voltage relatively compact and enduring which while operating with a single organ of operation, i.e. with a control mechanism connected to a single rod operation, adjusts the separation sequence of the switch contacts.
  • the means of movement are arranged so that the separations of the switch contacts vacuum and gas respectively occur simultaneously or slightly offset in time. This allows for adequate distribution between the vacuum interrupter and the gas switch the transient recovery voltage that appears between the contacts of each switch as soon as they separate.
  • the means of movement are preferably arranged so that the separation of the contacts of the vacuum interrupter occurs significantly delayed compared to separation arcing contacts of the gas switch, so that the current flow through zero is caused by the gas switch before the vacuum switch cuts the power.
  • the contacts of the gas switch are fitted one inside the other in the closed position, with an overlap distance which is less than or equal to the dead travel that can traverse the first part of the return means along the connection means.
  • the high voltage hybrid switching device 5 shown is generally with symmetry of revolution around an axis A. It includes a vacuum switch 10 containing a first pair of arcing contacts 1 and 2. A first contact 1 is fixed and is permanently connected to an end bushing 7 of the device 5. A second contact 2 is movable in the axial direction A.
  • the device also includes a switch gas 11 electrically connected in series with the vacuum switch.
  • This gas switch includes a second pair of arcing contacts, consisting of a third and a fourth contact 3 and 4.
  • the third contact 3 is fixed in the casing 12 by means of support shown in Figures 8 and 9.
  • the fourth contact 4 is movable in the direction axial A and integral with an actuating rod 6 connected to the control mechanism 8 of the device 5.
  • the two switches 10 and 11 are arranged in a common envelope 12 filled with a dielectric gas.
  • the movable contact 4 is introduced into the contact 3 fixed over a certain overlap distance when the cut-off device is closed.
  • setting speed a determined distance known as setting speed, which is to say that the overlap distance corresponds to the distance of speed setting traversed by the rod 6.
  • This speed setting is applied to the movable contact 4 of the gas switch and allows this contact 4 to be separated from the fixed contact 3 with a relatively high speed from the start of separation. A few milliseconds after said separation, this speed can reach a sufficient value favoring the extinction of the electric arc created between the switch contacts. It is particularly useful for cut the so-called capacitive currents without arcing.
  • the contact 2 is integral in translation with a mobile connection means 13 which permanently electrically connects it to the fixed contact 3. Arranging the third contact so that it remains fixed in the breaking device allows the separation of contacts 3 and 4 in the gas switch does not depend on mechanical operation of the assembly carrying the second movable contact of the vacuum switch.
  • Return means 15 can be separated into two parts 16 and 17. These two parts bear against each other in the axial direction A by means of coupling means 22 provided at their two opposite ends.
  • the second part 17 is integral in translation with the rod 6, and the first part 16 can be moved in translation of a dead travel D determined in the axial direction A relative to the connection means 13. In the embodiment shown, this stroke D is equal to the overlap distance of contacts 3 and 4, which means that it is equal to the speed-up distance defined previously.
  • return means 15 can also be produced by a telescopic connection not shown comprising two parts which can be locked in abutment one against the other and sliding one inside the other during their separation in the axial direction, one such telescopic connection being functionally equivalent to the return means 15 shown schematically in Figure 1.
  • a telescopic connection not shown comprising two parts which can be locked in abutment one against the other and sliding one inside the other during their separation in the axial direction, one such telescopic connection being functionally equivalent to the return means 15 shown schematically in Figure 1.
  • such an embodiment may have drawbacks due to the increase in moving masses.
  • First elastic means are provided to maintain the vacuum switch closed, by exerting on the connection means 13 and therefore on the contact 2 a first thrust which remains above a determined threshold until an instant when the rod 6 has traversed the dead race D.
  • the first and second elastic means provided for exerting said first and second thrusts comprise respectively a first spring 20 and a second spring 21 both of which are armed in compression and associated respectively with first and second stop means 14 and 19.
  • the first spring 20 is mounted between the connection means 13 and the first part 16, to exert respectively on these elements opposite thrusts - F 20 and F 20 .
  • the closed position of the cut-off device 5 is ensured by locking the movement of the rod 6 by the control mechanism 8, which makes it possible to keep the two parts 16 and 17 immobile in abutment against one another and also to maintain a certain pressure on the contacts 1 and 2 thanks to the first spring 20 associated with the connection means 13. This contact pressure allows the switch to ensure the passage of a fault current, and depends on the value of the current defect to bear.
  • connection assembly which connects the connection means 13 to the rod 6.
  • This assembly is qualified as dead-stroke connecting means, in the sense that these connecting means do not not allow the connection means to follow the movement of the rod as long as the latter did not complete the determined dead race.
  • the means of connection 13 remains stationary since the return means 15 do not transmit the movement of the rod 6. This property is verified both at the opening and at the closing of the cut-off device.
  • the movement of contact 2 during the separation of contacts 1 and 2 of the switch vacuum 10 is provided by the second semi-mobile spring 21, one end of which is stationary because in permanent support against the face of the vacuum switch which is crossed by the rod carrying the contact 2.
  • the other end of this spring 21 is movable, in permanent support against the connecting means 13, and exerts against the latter a thrust which remains very lower than that of the first spring 20.
  • the dead-stroke connecting means cooperate with the second elastic means to move the rod 6 and the connection means 13 so as to separate the contacts movable 2 and 4 respectively fixed contacts 1 and 3.
  • they are a constituent part of the means of movement which allow the separations contacts 1 and 2 and contacts 3 and 4 of the vacuum and gas switches respectively occur simultaneously or slightly over time.
  • the second stop means 19 are arranged so as to stop the translational movement of the connection means 13, as soon as the latter has traversed a certain insulation stroke d 1 as shown in FIG. 3.
  • These stop means 19 are electrically and mechanically connected to the fixed contact 3, and advantageously participate in the electrical connection between the contacts 2 and 3.
  • they consist of a cylindrical stud of axis A, which is introduced into a hollow tubular part of the mobile connection means 13 which can thus slide in the axial direction A.
  • They are also electrically and mechanically connected to a conduction element 9 which surrounds and maintains a blowing chamber arranged in the axial direction A. In known manner, this chamber comprises a blowing volume thermal 11A and a blowing nozzle 11B.
  • the conduction element 9 acts as the main contact for the passage of the continuous current when the cut-off device 5 is closed.
  • the electrical connection between element 9 and an outlet 33 is provided by means of a sliding contact 17A supported by the second part 17 of the return means 15 at the level of the means of coupling 22.
  • This second part 17 is electrically conductive and moves in translation with the rod 6 while remaining in electrical contact by a sliding contact 28 with a fixed conductive tube 31 connected to the socket 33.
  • the first part 16 of the means reference 15 is electrically insulating for reasons explained below.
  • connection means 13 in the illustrated embodiment consists of of a metal sleeve with symmetry of revolution in the axial direction A.
  • the different parts constituting this part are referenced in Figure 2.
  • the socket has a part hollow tubular 13A which has at its open end a first annular shoulder which constitutes the first abutment means 14.
  • This hollow part 13A has a bottom 13C intended to bear against the cylindrical stud constituting the second means of stop 19.
  • the socket also has a cylindrical part 13B in which is formed an annular housing 13D open towards the vacuum switch 10 and intended to accommodate the second spring 21.
  • the wall 13E which surrounds this housing 13D has at its end a second annular shoulder 13F to hold the first spring 20 in abutment.
  • This wall 16A is equal to outside diameter of the tubular part 13A of the sleeve 13, so that the part 16 can slide along the sleeve in the axial direction A.
  • the first part 16 of the return means 15 is moves in translation from the position shown in Figure 1 to that of Figure 2. It pushes in its movement the second part 17, and the sliding contact 17A is provided to separate from the conduction element 9 so that the fault current flows exclusively by arcing contacts 3 and 4 in the gas switch 11.
  • the first part 16 is electrically insulating or at least allows electrically isolate the connection means 13 from the second part 17 which is conductive. Indeed, if this part 16 were fully conductive, there would be an appearance electric arcs between parts 16 and 17 after the sliding contact 17A is disconnected from the conduction element 9.
  • the translational movement of the return means 15 is transmitted to the rod 6, and consequently at the movable contact 4 of the gas switch.
  • the thrust provided by the relaxation of the first spring 20 makes it possible to assist the control mechanism 8 for the rod operation.
  • FIG 2 the device is shown when the annular wall 16A of the first part 16 abuts against the first abutment means 14, after having traveled the distance D.
  • the movable contact 4 has simultaneously traveled the distance D in the gas switch, and is about to be separated from the fixed contact 3.
  • the push - F 20 of the first spring 20 can no longer act effectively on the connection means 13 to maintain the pressure on the contact 2, and the thrust of the second spring 21 is free to act on this means 13 for its translation.
  • the movable contact 2 in the vacuum switch 10 is then about to be separated from the fixed contact 1, simultaneously with the separation of the contacts 3 and 4 in the gas switch.
  • connection means 13 is set in motion by the relaxation of the second spring 21 which permanently exerts on this means 13 a thrust F 21 represented in FIG. 3.
  • This setting in motion causes on the one hand the displacement of the second contact 2 to open the vacuum switch 10, on the other hand the continuation of the movement in translation of the return means 15.
  • the movement of contact 2 is intended to be stopped as soon as the latter is completely separated from contact 1 in the vacuum switch 10.
  • the complete separation is carried out when the movable contact 2 is separated from the fixed contact 1 of a insulation distance determined in a vacuum, for example of the order of 15 mm.
  • the movement of the connection means 13 is stopped by the second stop means 19 which are arranged so that the stroke d 1 traveled by this means 13 is equal to the insulation distance corresponding to complete separation contacts 1 and 2.
  • the thrust F 21 of the second spring 21 is provided sufficient to initially supply the energy necessary for the displacement of the contact 2 and of the parts 13 and 16 integral in translation, and in the second time to maintain the contacts 1 and 2 open as shown in the figure 3.
  • this thrust remains much lower in standard than that F 20 of the first spring 20.
  • the thrusts F 20 and F 21 of the first and second spring are therefore provided to present a difference ⁇ F defined as F 20 -F 21 which remains greater than a determined threshold S.
  • F 20 decreases between the times corresponding to Figures 1 and 2 while F 21 is stable at its maximum, F 20 remaining high enough to satisfy the condition F 20 > F 21 + S.
  • Contacts 1 and 2 are kept open in the vacuum switch 10, until contacts 3 and 4 are fully opened in the gas switch where these contacts will be separated by a certain distance of insulation in the gas at the end of travel of the movable contact 4.
  • This insulation distance in the gas is much greater than the distance d 1 mentioned for the vacuum interrupter, since it is generally between 80 and 200 mm for most supply gas switches.
  • Figure 4 shows the block diagram of a device identical to that shown in Figure 1, except that the contacts of the gas switch are arranged to that their separation occurs shortly before that of the switch contacts at empty. To obtain such early separation of the contacts of the gas switch, it suffices that the overlap distance of these contacts is somewhat less than the travel dead D defined above, when the cut-off device is closed. So we have a overlap distance, in other words a speed-up distance for the rod 6, equal to D- ⁇ with the distance ⁇ which is a function of the time span desired for this early separation.
  • FIG. 6 another embodiment of a hybrid breaking device according to the invention is shown in an embodiment for which the device is intended for a use as generator circuit breaker in a medium voltage network. Ways which are connected to the connection means and to the operating rod of the device are arranged here so that the separation of the contacts of the vacuum interrupter significantly delayed compared to the separation of the arcing contacts from the gas switch.
  • the overlap distance D r of the contacts of the gas switch is here less than half of the dead travel D which the operating rod can travel together with the movement return means. It will be recalled that this overlap distance D r is also called the speed-up distance, in particular in the case of an equivalent embodiment where the contacts of the gas switch are arranged end to end. In general, for these applications of the device as a generator circuit breaker, it will be preferable to choose a dead stroke greater than twice the speed-up distance of the movable contact of the gas switch.
  • a hybrid switching device which has a separation sequence contacts such as that of the device of FIG. 6 makes it possible to reduce the asymmetry of the current and cause the current to cross zero earlier, at a compatible time with the operation of the vacuum switch.
  • FIG 7 is an enlarged partial view of the hybrid switchgear shown in Figure 9, in the closed position.
  • This view shows a particular mode of end-to-end realization of the arcing contacts of the gas switch in a device hybrid cut-out according to the invention, in which the contacts 3 and 4 of the gas switch 11 are kept in abutment against each other with a certain guaranteed contact pressure by elastic means.
  • Delay means 18 for setting the moving contact 4 in motion are inserted between this contact and the rod 6 for actuating the device, so that the separation of contacts 3 and 4 caused by said setting in motion of contact 4 takes place precisely at the moment when the rod 6 has traversed the defined speed-up distance previously.
  • the rod 6 and the contacts 3 and 4 are preferably of tubular shape in the axial direction A, and the contacts 3 and 4 advantageously each have their end a tip respectively 3A and 4A made of a conductive material refractory.
  • the arcing contact 4 also has orifices or openings 4B to allow the evacuation of hot gases which are in overpressure inside the tubular structure of said contact during the breaking of a fault current by the arcing contacts 3 and 4.
  • the overpressure gases are discharged into the space between the delay means 18 and the second part 17, then pass into the space between the rod 6 and the tube conductor 31 by openings made for this purpose in the second part 17. Finally, these gases undergo a final expansion when passing through the volume adjacent to the interior wall of the casing 12 by openings made for this purpose in the conductive tube 31. Good heard, other arrangements of openings for the evacuation of gases in overpressure can be expected.
  • the movable contact 4 is held in abutment against the fixed contact 3 with a certain contact pressure thanks to the thrust exerted by the third spring 24.
  • the annular cap 27 arrives bearing against the stop means 23.
  • the spring 24 no longer exerts any action on the contact 4 which is therefore driven in translation with the rod 6 and the second part 17.
  • the movable contact 4 is integral in translation with parts 6 and 17 only from an instant specific.
  • the operation of the device is here provided for obtaining the separation of the contacts 3 and 4 in the switch gas simultaneously with that of contacts 1 and 2 in the vacuum interrupter. It is however possible to have an early separation of the contacts of the gas switch, by arranging the elements of the device so that the speed-up distance is less than the distance D, similar to the arrangement shown in Figure 5.
  • Figure 8 shows schematically an embodiment of a device for hybrid shutdown, the simplified block diagram of which is shown in Figure 1.
  • the gas switch contacts are pushed into each other with a certain distance cover when the cut-off device is closed, as in Figure 1.
  • the volume adjacent to the interior wall of the envelope common to both switches is dimensioned to accommodate a varistor 32 electrically connected in parallel to the vacuum switch contacts in order to limit the applied voltage on said switch. This allows to adequately distribute the voltage applied to the vacuum and gas switches respectively when the cut-off device is opened.
  • the voltage distribution can also be adjusted using at least one capacitor mounted parallel to the cut-off device or parallel to one of the two switches.
  • the electrical connection between the varistor 32 and the movable contact of the switch vacuum is ensured via the metal sealing bellows of this switch.
  • the electrical connection between the connection means 13 and the conductive pad forming the second stop means 19 is provided by sliding contacts. Ports or openings are provided at the connection between this stud and the conduction element 9 which surrounds the blowing chamber of the gas switch, to allow evacuation hot gases as explained in the commentary to figure 7. Such openings are also provided in the first and second parts 16 and 17 of the return means 15, as well as in the conductive tube in which this second part can slide.
  • tie rods 30 participate in the mechanical maintenance of the gas switch in the enclosure of the switching device. These tie rods are fixed by a end on the face of the vacuum switch which is crossed by the rod carrying the contact mobile. They are rigidly connected by their other end to the conduction element 9 and thus keep the third contact and the blowing nozzle of the volume of thermal blowing in the gas switch.
  • the device actuation rod 6 is rigidly linked to the movable contact 4 thus than in the second part 17 of the return means 15.
  • the three elements 6, 4 and 17 are therefore permanently united in translation in this embodiment.
  • Figure 9 is a schematic representation in the closed position of another mode for producing a hybrid switching device according to the invention in which the contacts of the gas switch are arranged end to end.
  • Many elements are identical to those used for the embodiment shown in Figure 8.
  • the structure different from the contacts of the gas switch implies that the contact training movement of this switch cannot be achieved as directly as for the realization where these contacts are fitted.
  • delay means 18 as detailed in Figure 7 are provided to delay the setting in motion of said movable contact. These means allow the rod 6 to travel the speed-up distance as explained previously, and therefore allow the movable contact 4 to be driven by the rod 6 with a high speed at the start of the separation of the switch contacts at empty, as in the embodiment with plug contacts.
  • Figure 10 the elements of the hybrid switching device shown are identical to those of figure 9, except for the varistor which was removed and the envelope insulator whose diameter has been reduced accordingly.
  • Figure 11 shows the device of Figure 10 at a time corresponding to the step of Figure 2 when opening the device to interrupt the current.
  • Figures 12 and 13 show the device of Figure 10 at times corresponding respectively to the step of FIG. 3 and at the end of the opening of the device when the vacuum switch contacts are completely separated.
  • FIG. 14 the block diagram of another embodiment of a device according to the invention is shown in longitudinal half section.
  • This embodiment differs from that shown in FIG. 1 in that the dead-stroke connection means connecting the connection means 13 to the rod 6 are arranged differently.
  • These means of connection comprise return means 15 'which cooperate with first elastic means comprising a first spring 20 'ensuring the same function as the first spring 20 shown in Figure 1.
  • the return means 15 ' are directly connected by means of connection 13, and the spring 20 'is disposed between these means 15' and the rod 6.
  • the spring 20 'exerts a thrust on the connection means 13 'to keep the contacts of the switch closed empty. This thrust is exerted here by means of the return means 15 ′, until the rod 6 has traversed the dead travel D under the action of the relaxation of the spring 20 'which presses on an annular shoulder 34 integral with the rod.
  • the first elastic means further include first stop means 14 'which are here integral with the contact mobile 4 of the gas switch. These stop means 14 'cooperate with the first spring 20 'to limit the distance D that the rod 6 travels relative to the means of 15 'reference.
  • the return means 15 ' comprise two parts 16' and 17 'which can be moved together in abutment against one another and can be dissociated for opening the vacuum switch.
  • the first part 16 ′ is permanently united in translation of the connection means 13.
  • the second part 17 ′ is not integral in translation of the rod 6 as long as it travels the dead travel D relative to the return means 15 ′, and becomes integral with the rod once this race has been completed. Because of the increase in mass of the moving elements of the rod 6 after the separation of the contacts of the gas switch, this embodiment may have the disadvantage of having to increase the actuation energy to be supplied to the rod in order to obtain a sufficient setting in speed of the contact 4 with a view to breaking the so-called currents Capacitive.
  • the displacement means connected to the connection means 13 comprise second elastic means which include a second spring 21 cooperating with second stop means 19.
  • a hybrid cut-off device allows the thermal phase of the current cut-off, that is to say the period of a few microseconds during which the voltage recovery begins, to be largely ensured by the vacuum switch of the device.
  • the gas switch contributes essentially to the resistance to the peak value of the voltage, thanks to the relatively large contact separation distance inherent in this type of device in comparison with a vacuum switch.
  • This offers the possibility of using a gas other than SF 6 for blowing the gas switch.
  • SF 6 is generally chosen for its properties of resistance to rapid rates of recovery of the voltage during the thermal phase of the cut.
  • the resistance of the transient recovery voltage during the thermal phase is provided by the vacuum interrupter in a hybrid breaking device according to the invention
  • another gas or mixture of gases having sufficient dielectric properties can then be used in the gas switch of the device.
  • Nitrogen under high pressure has the dielectric properties required at high voltage. Not presenting any risks for the environment, it constitutes a preferential solution for a use with a gas other than SF 6 .
  • a mixture composed of more than 80% nitrogen and another gas such as SF 6 has at least the advantage of considerably reducing the risks for the environment compared to the use of pure SF 6 .

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Organic Insulating Materials (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
EP02291495A 2001-06-25 2002-06-14 Hybridleistungsschalter für Hoch- oder Mittelspannung mit Vakuum und Gas Expired - Lifetime EP1271590B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0108319 2001-06-25
FR0108319A FR2826503B1 (fr) 2001-06-25 2001-06-25 Chambre de coupure avec ampoule a vide

Publications (2)

Publication Number Publication Date
EP1271590A1 true EP1271590A1 (de) 2003-01-02
EP1271590B1 EP1271590B1 (de) 2010-08-11

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EP02291495A Expired - Lifetime EP1271590B1 (de) 2001-06-25 2002-06-14 Hybridleistungsschalter für Hoch- oder Mittelspannung mit Vakuum und Gas

Country Status (8)

Country Link
US (1) US6593538B2 (de)
EP (1) EP1271590B1 (de)
JP (1) JP4210078B2 (de)
CN (1) CN1393900A (de)
AT (1) ATE477580T1 (de)
CA (1) CA2389902A1 (de)
DE (1) DE60237265D1 (de)
FR (1) FR2826503B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2839193A1 (fr) * 2002-04-24 2003-10-31 Alstom Dispositif interrupteur a haute tension a coupure mixte par vide et gaz
EP1369888A1 (de) 2002-06-05 2003-12-10 Alstom Hybridleistungsschalter für Hoch- oder Mittelspannung mit Vakuum und Gas
EP2546851A1 (de) 2011-07-12 2013-01-16 Alstom Technology Ltd Hochspannungsunterbrechungsvorrichtung in einem Stromnetz
EP4336536A1 (de) * 2022-09-06 2024-03-13 Hitachi Energy Ltd Kontaktanordnung für einen elektrischen schalter

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Publication number Priority date Publication date Assignee Title
FR2868199B1 (fr) * 2004-03-25 2006-05-19 Areva T & D Sa Disjoncteur hybride a haute tension.
FR2869449B1 (fr) 2004-04-21 2008-02-29 Areva T & D Sa Appareillage electrique de coupure en moyenne ou haute tension.
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JP5380467B2 (ja) * 2011-01-06 2014-01-08 株式会社日立製作所 開閉器ユニット及びスイッチギヤ
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FR2988215B1 (fr) * 2012-03-16 2014-02-28 Schneider Electric Ind Sas Melange d'hydrofluoroolefine et d'hydrofluorocarbure pour ameliorer la tenue a l'arc interne dans les appareils electriques moyenne et haute tension
FR2996352B1 (fr) 2012-10-02 2014-10-31 Alstom Technology Ltd Dispositif de contact electrique de type doigt de contact a fort courant nominal
US9054530B2 (en) 2013-04-25 2015-06-09 General Atomics Pulsed interrupter and method of operation
US9305726B2 (en) * 2014-08-27 2016-04-05 Eaton Corporation Arc extinguishing contact assembly for a circuit breaker assembly
US10014139B2 (en) * 2015-09-02 2018-07-03 General Electric Company Over-current protection assembly
DE102016218518C5 (de) 2016-09-27 2023-05-11 Siemens Energy Global GmbH & Co. KG Kontaktstück für einen Hochspannungs-Leistungsschalter sowie Verfahren zu dessen Herstellung
DE102017216275A1 (de) * 2017-09-14 2019-03-14 Siemens Aktiengesellschaft Anordnung und Verfahren zum Schalten hoher Ströme in der Hoch-, Mittel- und/oder Niederspannungstechnik
CN108666921A (zh) * 2018-05-22 2018-10-16 苏州天鸿电子有限公司 一种用于开关柜的灭弧元件
US10783772B2 (en) * 2018-06-14 2020-09-22 Eaton Intelligent Power Limited Wireless switch with three-way control
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CN109461635B (zh) * 2018-12-29 2024-03-19 厦门大恒科技有限公司 一种滑动式触头装置以及安全型断路器
US10873326B1 (en) 2019-10-07 2020-12-22 Eaton Intelligent Power Limited Input voltage sensing using zero crossing detection
US11056296B2 (en) * 2019-11-20 2021-07-06 Eaton Intelligent Power Limited Circuit breaker using multiple connectors
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CN113921298B (zh) * 2021-09-03 2023-09-29 平高集团有限公司 一种电阻触头及使用该电阻触头的断路器
CN114664542B (zh) * 2022-05-23 2022-11-25 深圳市斯比特电子有限公司 一种双节点安全保护的电动车用充电桩变压设备
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FR2839193A1 (fr) * 2002-04-24 2003-10-31 Alstom Dispositif interrupteur a haute tension a coupure mixte par vide et gaz
EP1369888A1 (de) 2002-06-05 2003-12-10 Alstom Hybridleistungsschalter für Hoch- oder Mittelspannung mit Vakuum und Gas
FR2840729A1 (fr) * 2002-06-05 2003-12-12 Alstom Dispositif interrupteur pour haute ou moyenne tension, a coupure mixte par vide et gaz
US6849819B2 (en) 2002-06-05 2005-02-01 Alstom High-voltage or medium-voltage switch device with combined vacuum and gas breaking
EP2546851A1 (de) 2011-07-12 2013-01-16 Alstom Technology Ltd Hochspannungsunterbrechungsvorrichtung in einem Stromnetz
EP4336536A1 (de) * 2022-09-06 2024-03-13 Hitachi Energy Ltd Kontaktanordnung für einen elektrischen schalter
WO2024052194A1 (en) * 2022-09-06 2024-03-14 Hitachi Energy Ltd A contact assembly

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CN1393900A (zh) 2003-01-29
FR2826503B1 (fr) 2003-09-05
JP2003022736A (ja) 2003-01-24
ATE477580T1 (de) 2010-08-15
CA2389902A1 (fr) 2002-12-25
DE60237265D1 (de) 2010-09-23
JP4210078B2 (ja) 2009-01-14
US6593538B2 (en) 2003-07-15
EP1271590B1 (de) 2010-08-11
FR2826503A1 (fr) 2002-12-27
US20020195425A1 (en) 2002-12-26

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