EP2741305A1 - Séparateur haute tension - Google Patents

Séparateur haute tension Download PDF

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Publication number
EP2741305A1
EP2741305A1 EP12196095.9A EP12196095A EP2741305A1 EP 2741305 A1 EP2741305 A1 EP 2741305A1 EP 12196095 A EP12196095 A EP 12196095A EP 2741305 A1 EP2741305 A1 EP 2741305A1
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EP
European Patent Office
Prior art keywords
contact
arc
section
current path
nominal
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.)
Withdrawn
Application number
EP12196095.9A
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German (de)
English (en)
Inventor
Markus Richter
Rudolf Gati
Ulrich Straumann
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.)
ABB Technology AG
Original Assignee
ABB Technology 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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP12196095.9A priority Critical patent/EP2741305A1/fr
Publication of EP2741305A1 publication Critical patent/EP2741305A1/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • 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
    • H01H33/64—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas

Definitions

  • the invention is in the field of high-voltage switchgear and relates to a disconnector, which is called in English “disconnector", and a method for separating in a so-called “bus-transfer current switching” - switching action.
  • the term "disconnector” is not to be understood below as a circuit breaker or as a load switch, since it is not used for an electrical interruption of a nominal load in the nominal mode.
  • disconnectors or -rennern, hereinafter referred to simplifying disconnector
  • two load cases are distinguished, namely the so-called “bus-charging” operation and the so-called “bus-transfer current switching” operation.
  • bus-charging focuses on the interruption and the connection of capacitive currents
  • the "bus-transfer current switching” is aimed at disconnection situations in case of switching cases in which a change from a first busbar to a second busbar is to be carried out in rated operation
  • the disconnectors are used both in the case of "bus-transfer current switching” switching operations as well as “bus-charging” switching operations.
  • bus-transfer current switching - switching action in the foreground.
  • induced voltages and equalizing currents occur in nominal mode (rated operation), which require a certain breaking capacity of the disconnector.
  • nominal operation occur at a given nominal voltage and a given nominal current due to a so-called dome field (English also called coupler bay) when opening the disconnector alone due to the impedances of the current loop formed between the two busbars not negligible balancing currents.
  • Opening the disconnector creates an arc between the moving contact and the stationary contact.
  • the continuous current contacts (rated current contacts) of the movable isolator contact and the stationary isolator contact can be approximated to one another and electrically connected to one another without igniting arcs and therefore without any wear.
  • the respective isolators used for disconnecting or connecting the busbars must be able to switch repeatedly reliably and without wear, depending on the requirements of the switchgear even in the presence of these induced voltages and equalizing currents.
  • these induced voltages are usually not more than 20 volts.
  • the currents are estimated (at the time and with the exception of the UHV voltage level) to a maximum of 80% of the nominal current.
  • the current loops - and correspondingly the induced voltages - can be greater than is usual with separators of this type.
  • This induced voltage in nominal operation can increase, for example, in the case of gas-insulated switchgear panels combined with an outdoor system, depending on the switchgear, for example up to 300 V. There is therefore a need for a disconnector that switches reliably and wear-free even under increased requirements.
  • a first type of isolator suitable for such switching operations has a first contact group with a first nominal contact and a second contact group with a second nominal contact.
  • the first nominal contact and the second nominal contact together form a nominal contact system for transmitting a nominal electrical power.
  • the second contact group also has an arcing contact to protect the nominal contact system from excessive wear when the disconnector is opened following the occurrence of an arc.
  • the burn-up system comprises the arc contact, so that the interruption current path from the first nominal contact via arc to the arc contact can be transferred to the second contact group and remains there until the arc extinguishes.
  • the arc is generated when opening the separator between the first contact group and the second contact group, but that a foot of the arc was often not in a preferred burnup zone, which with suitable more wear resistant Components or component areas such as Abbrandektroden and the like was provided in order to counteract the arc substantially in terms of unwanted material removal, but was in zones with a relatively low erosion resistance.
  • these separators often undesirably much burned on these less wear-resistant components, because these components were not intended for such material removal by the arc.
  • switchgear is understood to mean switchgear that is configured for nominal or nominal voltages of 50 kV or higher.
  • switchgear includes hereinafter not only gas-insulated switchgear in which the electrically active parts are arranged with a suitable insulating gas in a metal-enclosed housing (GIS), but also outdoor switchgear (AIS) or hybrid plants, which are a mixture of GIS and AIS.
  • GIS metal-enclosed housing
  • AIS outdoor switchgear
  • hybrid plants which are a mixture of GIS and AIS.
  • this object is achieved in that the current path own opening of the separator own magnetic field to build a magnetic pressure is used, with which the arc of a less unfavorable in terms of combustion zone of the separator in a predefinable combustion zone is displaced ,
  • One advantage is that the arc in this combustion zone is less likely to cause material erosion than in the zone in which the arc occurred.
  • the high voltage isolator includes a first contact group having a first nominal contact and a first arcing contact.
  • the first arc contact it is completely integrated in the first nominal contact, so that one and the same component can be used both as the first nominal contact and as the first arc contact.
  • the high-voltage isolator comprises a second contact group with a second nominal contact and a second arc contact.
  • the first contact group of the second contact group along a separation axis is arranged wegbewegbar such that extending from the first nominal contact to the second nominal contact Nominalstrompfad interruptible at a nominal contact separation point, as well as from the first contact group interruption current path extending to the second contact group can be interrupted at an arc contact separation point.
  • the isolator has an interruption current path with a current path section which extends transversely to the separation axis and has an S-shape.
  • transverse is understood to mean a direction extending radially relative to the separation axis. This radial direction does not have to be strictly perpendicular to the separation axis, but may also be obliquely inclined thereto. The only important thing is that it has a directional component running in the radial direction.
  • interruption current path is hereinafter understood to mean the current path in which the arc is produced when opening the disconnector.
  • the geometrical location of the interruption current path may still be approximately at the point where the first arc is formed the nominal current path has been found and the Abbrandstrompfad commutes only after the formation of the arc to a locally different location, or be separated from the Nominalstrompfad already from the outset locally.
  • the S-shaped current path section successively, that is arranged electrically in series one after the other, a first section, a second section adjacent thereto and a third section adjacent thereto.
  • its current flow direction in the first path section is in opposite direction due to the S-shape with respect to the second route section.
  • the current flow direction in the second link section is opposite to the third link section.
  • opposite is understood to mean the current flow direction which is responsible for the effective direction of the magnetic field force.
  • the first link section and the second link section define a first belly of the S-shaped current path section, while the second link section and the third link section define a second belly of the S-shaped current path section.
  • the first belly is larger in size than the second belly, so that during operation of the disconnector due to the current flow direction, a first magnetic force and a first magnetic pressure associated therewith are smaller than a second magnetic force and a second magnetic pressure associated therewith because of the second abdomen.
  • the arc contact separation point is arranged on the S-shape in the region of the second abdomen.
  • the S-shaped current path section is not to be understood in the narrow sense, that is strictly like a correctly written letter "S", but in the sense of two opposite loops, so that embodiments of current path sections are covered by this term, which mirror images of a correctly written "S" are, for example, mirrored around a vertical axis.
  • the term "S-shaped current path section” should also include S-forms which have geometrically distorted or not along a continuous curve.
  • the first link, the second link, and the third link need not necessarily consist of a single arc segment, but may each be made up of a plurality of line segments be constructed of different geometric shape.
  • the first surface bounded by the first abdomen is smaller than the second surface bounded by the second abdomen, so that a larger magnetic field force can be generated with the smaller second surface when opening the isolator than with the absolute value larger first area in the second abdomen.
  • the above-mentioned S-shaped configuration of the interruption current path still remains after the first arc contact (or in the basic embodiment, the first nominal contact) no longer touches the second arc contact at the arc contact separation point, because the arc contacts have been moved away from each other when opening the disconnector.
  • the S-shaped current path section then extends in succession from the first link section and the second link section via the arc to the third link section.
  • an arc can be generated during operation when opening the disconnector in the interruption current path, for example, which can be pushed off or pushed away from the second magnetic pressure into a predefinable combustion zone at least until the interruption current path to the burn-off system with the first arc Contact and the second arc contact commutated.
  • the base point of the arc shifts at the second nominal contact to the second arc contact, which is also arranged in the predefinable or predefined burnup zone.
  • the second magnetic force formed by the S-shaped current path section and the second magnetic pressure associated therewith due to the second abdomen furthermore reliably prevent the base point of the arc from the second arc contact from falling back to the second nominal value when the divider is opened. Contact can commute.
  • the first arc contact is completely integrated in the first nominal contact, so that one and the same component can be used both as the first nominal contact and as the first arc contact, then the arc is opened when the arc is opened generates the first nominal contact and the second nominal contact, so that the interruption current path at the beginning lies at the geometric location of the Nominalstrompfades.
  • the second magnetic field force magnetic pressure promotes commutation of the nominal current path to the burn-off system with the cut-off current path which ultimately leads from the now first arcing contact-first nominal contact via the arc to the second arc contact.
  • the separator has a first arc contact, which is arranged distally spatially separate from the first nominal contact, then the nominal current path leading via the first and second nominal contact commutates to the first arc contact and after the interruption of the nominal current path second arc contact, without that an arc is already generated.
  • the arc is first formed in the interruption current path and the magnetic pressure with the second magnetic field force is used exclusively for the purpose of moving the arc into the predefinable burnup zone.
  • the term "distal" has been used to explain that the physical separation of nominal contact and arcing contact to the face of the opposing contact group is critical in the present context, rather than the geometric location at which the nominal contact and arcing contact electrically connected to each other.
  • At least the first and / or the second arc contact has a burn-off element.
  • burn-off element is understood to mean a component or a coating which comprises a resistant material, such as tungsten or a tungsten alloy, in order that the burn-up caused by the arc remains within a predefinable threshold value.
  • the S-shaped current path section defines by its shape a vertical axis, comparable to the vertical line of the dollar sign.
  • the first belly of an embodiment of the S-shaped current path section has a certain first depth.
  • This first depth extends transversely to the vertical axis and is at least as long as the length of the arc when opening the separator in this operating state between the first arc contact and the second arc contact.
  • this operating state is understood to mean the opening degree or the opening position of the disconnector.
  • a height of the first abdomen extending in the direction of the vertical axis of the S-shaped current path section is greater in magnitude than the depth of the first abdomen.
  • the second magnetic field force is greater than the first magnetic field force, and ultimately the second magnetic field force can be used to suppress the arc in the preferred combustion zone, it is fundamentally advantageous if the second magnetic force in relation to the first magnetic force is as large as possible.
  • the size of the first abdomen and the second abdomen must be kept within reasonable limits.
  • Good turn-off capability values can be achieved if the ratio of the height of the first belly to a height of the second belly also extending in the direction of the vertical axis of the S-shaped current path section is at least one-point-five to one (1.5: 1), in embodiments of separators is preferably even more than 2: 1.
  • the first contact group is movable with a drive of the disconnector relative to the second contact group.
  • the first arc contact is sleeve-shaped at least at the second contact group facing first end.
  • the first belly of the S-shaped current path portion is disposed at the first end of the first arcing contact and facing the second contact group. This means that his culmination point is closer to the second contact group than the two places where the abdomen begins.
  • the current path prior to opening the arcing contact separation point, extends at the first arcing contact (which is integrated in the first nominal contact) and the second nontal contact, prior to operation of the isolator Breaking the nominal current path and the commutation on the interruption current path to the burn-off system with the first arc contact and the second arc contact ultimately from the first Arc contact (which is integrated in the first nominal contact) extends to the second arc contact.
  • Suitable separators for such high ratings have measures with which the arc burning time can be kept as short as possible in terms of time. This requires that the separator has a mechanism with which the first arc contact can temporally within fractions of a second, so jerky move away from the second arc contact.
  • a relative speed from the first arc contact to the second arc contact of at least 1 m / s can be achieved.
  • the speed is more than 2 m / s, more preferably more than 4 m / s, so that the arc-burning time is as low as possible.
  • Such a jerky movement can be achieved, for example, by the fact that, when the first nominal contact and the first arcing contact move away from the second contact group, the first arcing contact remains connected to the second arcing contact as long as possible when opening the isolator while the first nominal contact is further displaced further in the opening direction away from the second nominal contact.
  • the first arc contact and the second arc contact are formed so that the first arc contact when opening the separator time as long as possibly sticking to the second arc contact.
  • 'sticking' is not interpreted narrowly in the following, but in the sense of 'holding' or 'holding on', and includes any phenomenon in which two elements maintain a fixed position against a force acting on them, which is a release of the sticking / Holds.
  • This can be done for example by mechanical means, such as a latching mechanism with appropriately selected complementary geometry, such as in the form of a mechanical resistance, the object with a larger diameter, but at least teilverformbar, when passing through an opening with a smaller diameter undergoes.
  • magnetic adhesion may also be liable.
  • the third stretch section is arranged on the second arc contact, while the first stretch section and the second Track section are arranged on the first arc contact.
  • An adhesion between the first arc contact and the second arc contact can be generated, for example, by virtue of the fact that the second arc contact in the third stretch has at least one first spring element that can be moved radially relative to the separation axis and is shaped such that it matches the second stretch section of the first first arc contact forms a releasable snap connection.
  • the at least one first spring element is likewise arranged in the burn-up zone and shaped such that the arc which can be generated between the first arc contact and the second arc contact forms a base point on the at least one first one during its production during operation of the isolator Spring element has.
  • the first spring element is made of a highly electrically conductive material such as aluminum (Al), copper (Cu) or an Al and / or Cu alloy, while another region of the burn-up zone has a more erosion-resistant material.
  • a sufficiently high relative speed from the first arc contact to the second arc contact can be achieved by connecting the second arc contact to a second return system.
  • the releasable snap connection is designed such that when opening the separator, the first contact group within a first position range of the first contact group relative second nominal contact and the separation axis in an opening direction is movable, while the third stretch section is held on the second stretch portion of the releasable snap connection It may be noted that the second arcing contact remains held at the first arcing contact while the second retrieval system is biased and builds a biasing force.
  • the pretensioning force of the return system is greater than a predefinable holding force of the detachable snap connection acting in the direction of the disconnection axis, so that the second arcing contact is returned by the second retraction system in the opening direction the second contact group is electrically isolated from the first contact group.
  • the first contact group with a drive of the disconnector is in turn movable relative to the second contact group.
  • the first arc contact is now physically separated from the first nominal contact, but nevertheless electrically connected to it due to the functional requirements.
  • the interruption current path extends to the first arcing contact with the second arcing contact prior to opening the arcing contact separation location.
  • the second arc contact is sleeve-shaped at least at its second end facing the first contact group.
  • the first belly of the S-shaped current path portion is disposed at the second end of the second arc contact and facing the first contact group.
  • the first arc contact is formed pin-shaped at least at the second contact group facing the first end.
  • the trends in higher rating trends and reduction measures described by the first type of separator embodiment the arc burning time, the preferred opening speeds, as well as the releasable adhesive bond between the first arc contact and the second arc contact and the measures suitable thereto also apply to the second type of embodiment of the separator.
  • this effect can be achieved by arranging the third route section at the first arc contact and arranging the first route section and the second route section at the second arc contact.
  • the first arc contact is arranged in the third stretch section and has at least one second spring element which can be moved radially to the separation axis and which is shaped such that it forms a releasable snap-in connection with the second stretch section of the second arc contact.
  • both the first arc contact and the second arc contact may have radially resilient elements for generating the adhesive force.
  • a sufficiently high relative velocity from the first arcing contact to the second arcing contact is achievable by connecting the first arcing contact to a first retrieval system.
  • the releasable snap connection is designed such that when opening the disconnector, the first contact group or the first nominal contact within a first position range of the first contact group relative second nominal contact and the separation axis in an opening direction is movable during the first arc contact is held at the second arc contact, while the first return system is biased and builds a biasing force.
  • This holding is achievable in the second type of disconnector by holding the third leg on the second leg of the releasable snap-fit so that the second arcing contact is maintained at the first arcing contact while the first return system is biased.
  • the pretensioning force of the return system is greater than a predefinable holding force of the detachable snap connection acting in the direction of the disconnection axis, so that the second arcing contact is returned by the second retraction system in the opening direction the second contact group is electrically isolated from the first contact group.
  • a switchgear can be created which corresponds to the needs of a user of the switchgear according to higher ratings.
  • the switchgear is an air-insulated switchgear, a gas-insulated switchgear, or a mixture of an air-insulated switchgear and a gas-insulated switchgear.
  • step b) comprises a movement of the first contact group, the second contact group, as well as two contact groups together.
  • Magnetic pressure on the arc may occur immediately after the interruption of the nominal current path.
  • the magnetic pressure exerts its effect on the arc during steps c) and d).
  • the first arc contact is completely integrated in the first nominal contact, so that one and the same component can be used both as the first nominal contact and as the first arc contact, then the arc is opened when the arc is opened generates the first nominal contact and the second nominal contact, so that the nominal current path is maintained, so to speak. Only then does the magnetic pressure with the second magnetic force support commutation of the nominal current path to the burn-off system with the cut-off current path, which ultimately leads from the first nominal contact via the arc to the second arc contact.
  • the disconnector has a first arcing contact which is located distally spatially separate from the first nominal contact, then the nominal current path leading via the first and second nominal contact commutes to the first arcing contact and the second already after the interruption of the nominal current path Arc contact without an arc being generated.
  • the arc is first formed in the interruption current path and the magnetic pressure with the second magnetic field force is used exclusively for the purpose of moving the arc into the predefinable, suitable burnup zone.
  • the FIG. 1 shows a first embodiment of a high-voltage disconnector 1 of a first type.
  • the separator 1 is designed as a gas-insulated separator and therefore has a metal-encapsulated housing 2 for limiting a gas space 3 for an insulating gas to be filled in it.
  • the insulating gas used may preferably be a fluoroketone, a sulfur hexafluoride or another gas or a gas mixture.
  • An example of a suitable insulating gas with fluorocarbon is found approximately in the WO 2012/142346 A1 ,
  • the separator 1 has a first contact group 4 with a sleeve-shaped first nominal contact 5.
  • a likewise sleeve-shaped first arc contact 6 is integrated into the first nominal contact 5 in such a way that the first nominal contact 5 and the first arc contact 6 are a single component, which serves both as the first arc contact 6, and as first nominal contact 5 is used.
  • first nominal contact and “first arc contact 6" will hereinafter be referred to, depending on the use just explained.
  • the isolator 1 further has a second contact group 7 with a second nominal contact 8 and a second arc contact 9.
  • the first contact group 4 is movable away from the second contact group 7 along a separation axis 11 such that a nominal current path 12 extending from the first nominal contact 5 to the second nominal contact 8 at a nominal contact separation point 13 and an interruption current path 14 extending from the first contact group to the second contact group can be interrupted at an arc contact separation point 15 (see in conjunction with FIG Fig. 2 to 4 ).
  • the disconnector 1 is shown in the switch position "closed", in which a nominal feeder 15 electrically with two opposite Nominal branch conductors 16 is connected and electrically supported against the housing with disc insulators 17.
  • the separator 1 is designed as a combined isolator / earth electrode and has a conductive contact with the housing 2 earth contact 18.
  • the two nominal branch conductors 16 are connected to a guide body 20, which holds the first contact group 4 and leads in the direction of the separation axis 11, so that when entering the first nominal contact 4 in the ground contact 18, the two nominal branch conductors 16 can be electrically set to ground potential.
  • the first contact group 4 of the second contact group 7 along the separation axis 11 via a (not fully shown) drive 21 by means of a spindle-nut combination linearly movable.
  • FIG. 2 shows a partial enlargement of the rectangle shown in dashed lines in the FIG. 1 wherein the separator is in a first open position.
  • FIG. 3 shows that the first nominal contact 5 mechanically touches the second nominal contact 8 via a spiral contact spring 22 held on the second nominal contact 8 in this first open position, so that the nominal current path 12 is transferred from the second contact group 7 via the second nominal contact 8, the helical contact spring 22 associated with the second nominal contact 8 and the first nominal contact 5 are in electrical connection with the first contact group without an arc.
  • the first arc contact 6 or the first nominal contact 5 is sleeve-shaped, at least on its first end facing the second contact group 7.
  • the nominal current path 12 has a current path portion which extends transversely to the separation axis 11 and that the current path portion has an S-shape. Subsequently, the mirror-inverted S-shape simplistic called "S-shape".
  • the interruption current path 14 has a current path portion 23 which extends transversely to the separation axis and that the current path portion has an S-shape, which by their shape a transverse, that is oblique to the separation axis 11th extending vertical axis 26 defined.
  • FIG. 5 shows only the broken Nominalstrompfad or Abbrandstrompfad 14 in the contact arrangement of the separator 1 in the open position according to FIG. 4 .
  • the burn-off current path 14 now clearly shows the S-shaped current path section 23.
  • This current path section 23 is now thoughtfully divided into three parts.
  • the S-shaped current path section 23 has in series a first route section 27, a second route section 28 adjoining thereto and a third route section 29 adjoining thereto.
  • the three sections 27, 28, 29 are arranged such that, during operation of the isolator 1, a direction of current flow (see arrow of Abbrandstrompfad 14) in the first section 27 and in the second section 28 is in opposite directions.
  • the beginning and end of the sections 27, 28, 29 are shown with a dash on the S-shaped current path section 23.
  • the current flow direction in the second path section 28 is also opposite to the direction of current flow in the third path section 29.
  • the first link section 27 and the second link section 28 define a first belly 30 of the S-shaped current path section 23, while the second link section 28 and the third link section 29 define a second belly 31 of the S-shaped current path section 23.
  • the first route section 27 touches the second route section 28 approximately at the outer, convex point of the first belly 30.
  • the first belly 30 of the S-shaped Current path portion 23 is disposed at the first end of the first arc contact 6 and the second contact group 7 faces.
  • a maximum depth 32 of the first belly 30 can be approximately determined, which depth 32 is arranged approximately at right angles to the vertical axis 26.
  • the first belly 30 has a first height 36, while the second belly has a second height 37.
  • the depth 32 of the first belly is in terms of magnitude significantly greater than one the length of the arc between the first arc contact and the second arc contact in this operating state or this open position.
  • the first height 36 is greater in magnitude than the second height 37, the first belly 30 of its surface (shown in dotted-grid pattern) is greater than the second belly 31 with its smaller area (in the dashed upward diagonal pattern shown).
  • a ratio of the height 36 of the first abdomen to the height 37 of the second abdomen is approximately 1.5: 1 in terms of amount.
  • the height 36 of the first abdomen is greater in magnitude than the depth 32 of the first abdomen.
  • the larger area in the first belly 30 means that a field line density of the magnetic field lines of the burn-off flow path 14 is lower than a field line density of the magnetic field lines of the burn-off flow path 14 in the smaller area in the smaller second belly 31.
  • the magnetic field direction of the burn-off current path 14 has been determined according to the known art Rule of thumb with a cross or point in a circle. Due to the opposite direction of flow at the bellies 30, 31, the field lines cumulate in the same direction. This was attempted in the first abdomen 30 with a few circled points and in the second abdomen 31 with comparatively many circled crosses.
  • a first magnetic field force 32 due to the few circled points per area and a first magnetic pressure assigned to it is smaller than a second magnetic field force 33 because of the large area of the first belly 30 due to the many circled crosses per area and a second magnetic pressure associated therewith due to the areal smaller one second abdomen 31.
  • An arc contact separation point 34 is arranged on the S-shape of the current path section 23 in the front region of the second abdomen 31, for example at the outer, convex point of the second abdomen 31.
  • a Abbrandelement 35 is arranged in order to minimize the removal of material from the first arc contact 6 can.
  • a current path portion 23 which extends transversely to the separation axis and that the current path portion has an S-shape, which defines by their shape a transverse, that is oblique to the separation axis 11 extending vertical axis 26.
  • FIG. 9 shows an upper half of a second embodiment of an inventive separator 10 of the first type in longitudinal section along a separation axis 11.
  • the first contact group 4 and the second contact group 7 are in turn arranged by means of an insulating gas in a metal-enclosed housing 2 and the separator 10 is in its closed position in which the first nominal contact 5 is electrically and mechanically in communication with the second nominal contact 8.
  • the second arc contact 9 is now no longer fixedly arranged relative to the second nominal contact 8, but movably mounted in the direction of the separation axis 11. Electrically, the second arc contact 9 is still connected to the second nominal contact 8.
  • the second contact group 7 now has a second return system 40, which is connected at the end to the second arc contact 9, and is fixed on the other side of the housing stationary.
  • Both the first nominal contact 5, as well as the second nominal contact 8 and the second arc contact 9 are sleeve-shaped at least in sections.
  • the first nominal contact 5 (or the first arc contact 6) has at its end facing the second contact group 7 a radially inwardly directed holding means 41, which in this switching position completely in a second arc contact associated counter-holding means 42nd engages and forms with this a releasable snap connection 43.
  • FIG. 10 shows the separator 10 already in the second open position, wherein the housing 2 in the Fig. 10 has been omitted.
  • the first opening position is determined by the Fig. 13 be explained. Coming back to Fig. 10 it should be noted that the first contact group 4 is still connected without arcing via the snap connection 43 and the second arc contact 9 with the second contact group 7.
  • the first contact group 4 was displaced within a first position region 44 of the first contact group 4 relative to the second nominal contact 8 and to the separation axis 11 in the opening direction 24. Due to the complementary shaped geometry of the holding means 41 and the counter-holding means 42 creates a force acting radially to the separation axis 11 adhesive force / adhesion. This adhesive force is determined so that the second arc contact 9 is maintained within the first position range 44 via the snap connection 43 on the first nominal contact 5. As a result of the displacement of the second arc contact 9, the second return system 40 designed as a spring is pretensioned so that it builds up a pretensioning force.
  • the second arc contact 9 is retrieved by the second return system 40 counter to the opening direction 24, so that the second contact group 7 is electrically disconnected from the first contact group 4.
  • FIG. 12 is a section enlargement of the FIG. 9 the first contact group 4 and the second contact group 7 in the fully closed switch position shown.
  • the nominal current path leads from the second nominal contact 8 via the spiral contact spring 22 to the first nominal contact 5.
  • the first nominal contact 5 has been pushed in an opening direction 24 (here to the left) into a first open position.
  • the mechanical contact from the first nominal contact 5 to the second nominal contact 8 via the spiral contact spring 22 was interrupted, whereupon the current commutated from the nominal current path to the interruption current path leading via the second arc contact 9.
  • the second arc contact 9 has at least one radially movable to the separation axis 11 first spring element 46 in a portion which forms the third in the section 29.
  • sleeve-shaped second arc contact 9 has multiple slits in the direction of the separation axis 11, so that its collet-like fingers have a plurality of first spring elements 46 arranged on its circumference.
  • the spring elements 46 are designed such that their fingers which are movable radially relative to the separation axis 11 prevent the second path section 28 of the S-shaped current path section 23 from passing in the opening direction 24 by opposing a mechanical resistance. For this reason, seen in the longitudinal cross-section hill-shaped spring element 46 forms the counter-holding means 42 and the convex second section 28, the holding means 41 of the snap connection 43.
  • the third link section 29 is disposed on the second arc contact 9 and the first link section 27 and the second section 28 are arranged on the first arc contact 6.
  • FIG. 15 was the first nominal contact 5 in the opening direction 24 pushed a little further into the third open position.
  • the adhesive force which can be applied by the maximum extent of the spring elements 46 used as counter-holding means 42 has been exceeded when they pass into the second position range. Thereafter, the spring elements 46 radially inwardly in the direction of the separation axis, so that now acting as the first arc contact 6 first nominal contact on the hill-shaped spring element 46 could pass in the opening direction 24.
  • the second return system 40 is maximally biased, shown shortly before retrieval to its initial position.
  • FIG. 16 shows the nominal current path of the disconnector Figure 15 , Where the mechanical contact between the first contact group and the second contact group is interrupted, so that the arc 25 at the basis of Fig. 15 has formed.
  • the arc 25 has a foot point on an edge of the spring element 46, which flank is facing a further Abbrandelement 47. That further burn-off element 47 is arranged on one end of the second arc contact 9 facing the first contact group 4 and faces the first contact group 4.
  • the arc 25 has its foot in its formation during operation of the disconnector on the spring element 46, whose flank is also still associated with a combustion zone of the arc.
  • the first abdomen 30 and the second abdomen 31 of the S-shaped current path section 23, as well as the resulting first magnetic field force 32 and the second magnetic field force 33, these elements are in the in Fig. 15 shown opening position of the separator 10 in FIG. 17 illustrated again graphically illustrated.
  • the Fig. 17 is also used to understand the statements in connection with Fig. 14 , In the in the Fig. 15-17 shown opening position of the separator 10, the second magnetic force 33 is maximum and therefore exerts on the arc 25 is a greater magnetic pressure, as in the in Fig. 18 shown opening position.
  • FIG. 12-15 illustrated embodiment of a second separator 10 show the Fig. 20-22 a third embodiment of the inventive separator 100. That separator 100 is now a separator of a second type.
  • FIG. 20 an upper half of the third embodiment of an inventive separator 100 in longitudinal section along a separation axis 11.
  • the first contact group 4 and the second contact group 7 are in turn arranged by means of an insulating gas in a metal-encapsulated housing 2 and the separator 10 is shown in its closed position, in which the first nominal contact 5 is electrically and mechanically in communication with the second nominal contact 8. Only differences of the second embodiment of the separator 100 to the second embodiment of the separator 10 described above will be discussed below.
  • the second arc contact 9 is now no longer movable, but arranged stationary in the separator 100, so that in the second contact group 7, no second return system 40 is required. Instead, the first contact group 4 now has a first return system 48.
  • This isolator 100 has a first arc contact 6, which is arranged distally distally separate from the first nominal contact 5, so that the nominal current path which leads via the first and second nominal contacts opens when opening the Trenner 100 commutes after breaking the Nominalstrompfads on the combustion system with the first arc contact 6 and the second arc contact 9 on an interruption current path, without that an arc is already generated.
  • the separator 100 has a nominal contact separation point 13, which is spatially removed from the arc-contact separation point 34.
  • Both the first nominal contact 5, as well as the second nominal contact 8 and the second arc contact 9 are sleeve-shaped at least in sections.
  • the first arc contact 6 is arranged to be movable relative to the first nominal contact 5 along the separation axis 11.
  • a pull / compression spring of the first return system 48 extends around the first arc contact 6, which is pin-shaped at its first end facing the second contact group 7.
  • the first contact group 4 When the disconnector 10 was opened, the first contact group 4 was displaced within a first position region 44 of the first contact group 4 relative to the second nominal contact 8 and to the separation axis 11 in the opening direction 24. Due to the complementary shaped geometry of the holding means 41 and the counter-holding means 42 in turn creates a force acting radially to the separation axis 11 adhesive force / adhesion. This adhesive force is determined so that the first arc contact 6 is maintained within the first position range 44 via the snap connection 43 on the second arc contact 9. As a result of the displacement of the first arc contact 6, the first return system 48 designed as a spring is pretensioned, so that it builds up a pretensioning force.
  • the second arc contact 9 When passing into the second position range 45, the second arc contact 9 is again pulled back jerkily by the first return system 48 in the opening direction 24, so that the second contact group 7 is electrically disconnected from the first contact group 4 within a fraction of a second.
  • the isolator 100 Due to the separated nominal current paths and interruption current paths, the isolator 100 has a nominal contact separation point 13, which is spatially removed from the arc contact separation point 34.
  • FIG. 23 is an enlarged view of the in Fig. 22 dashed section shown, which now shows not only the upper half of the contact arrangement, but the whole contact arrangement. For the sake of clarity, however, the interruption current path 14 is shown only in the upper half of the contact arrangement. From the Fig. 23 shows that the first belly 30 of the S-shaped current path section 23 is arranged at the second end of the second arc contact 9 and the first contact group 4 faces. Accordingly, the first route section 27 and the second route section 28 are arranged on the second arc contact 9, while the third route section 29 is arranged on the first arc contact 6.
  • the first arc contact 6 has a plurality of second spring elements 49 which are movable radially relative to the separation axis and which are shaped in such a way that they form a releasable snap connection 43 with the second stretch section 28 of the second arc contact 9.
  • an arc is first formed in the interruption current path as soon as it is held with a circumferential, radially protruding ring (which forms the counter-holding means 42) on which the holding means 41 forming, formed in longitudinal cross-section convex second section 28.
  • the magnetic pressure with the second magnetic force is used exclusively for the purpose of shifting the arc into the predefinable burnup zone in the case of the radially protruding ring.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
EP12196095.9A 2012-12-07 2012-12-07 Séparateur haute tension Withdrawn EP2741305A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12196095.9A EP2741305A1 (fr) 2012-12-07 2012-12-07 Séparateur haute tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12196095.9A EP2741305A1 (fr) 2012-12-07 2012-12-07 Séparateur haute tension

Publications (1)

Publication Number Publication Date
EP2741305A1 true EP2741305A1 (fr) 2014-06-11

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ID=47357972

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EP12196095.9A Withdrawn EP2741305A1 (fr) 2012-12-07 2012-12-07 Séparateur haute tension

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EP (1) EP2741305A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2925162A1 (de) * 1979-05-25 1980-12-04 Bbc Brown Boveri & Cie Elektrischer schalter fuer grosse stroeme
DE19830232A1 (de) * 1998-07-07 2000-01-13 Abb Research Ltd Stromkontaktanordnungen eines Stromschalters
EP1054419A1 (fr) * 1999-05-17 2000-11-22 Alstom Sectionneur haute tension à contact mobile déplacé à grande vitesse
JP2002334637A (ja) * 2001-05-09 2002-11-22 Mitsubishi Electric Corp ガス絶縁断路器
US20120061352A1 (en) * 2009-06-25 2012-03-15 Mitsubishi Electric Corporation Gas-insulated switchgear
WO2012142346A1 (fr) 2011-04-12 2012-10-18 Real-Time Genomics, Llc Procédé et appareil pour une plateforme d'analyse génomique de grande précision utilisant l'hybridation et la dissociation améliorée

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2925162A1 (de) * 1979-05-25 1980-12-04 Bbc Brown Boveri & Cie Elektrischer schalter fuer grosse stroeme
DE19830232A1 (de) * 1998-07-07 2000-01-13 Abb Research Ltd Stromkontaktanordnungen eines Stromschalters
EP1054419A1 (fr) * 1999-05-17 2000-11-22 Alstom Sectionneur haute tension à contact mobile déplacé à grande vitesse
JP2002334637A (ja) * 2001-05-09 2002-11-22 Mitsubishi Electric Corp ガス絶縁断路器
US20120061352A1 (en) * 2009-06-25 2012-03-15 Mitsubishi Electric Corporation Gas-insulated switchgear
WO2012142346A1 (fr) 2011-04-12 2012-10-18 Real-Time Genomics, Llc Procédé et appareil pour une plateforme d'analyse génomique de grande précision utilisant l'hybridation et la dissociation améliorée

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