EP3469610A1 - Contact arm for a high-voltage switching device and method for the use thereof - Google Patents
Contact arm for a high-voltage switching device and method for the use thereofInfo
- Publication number
- EP3469610A1 EP3469610A1 EP17739935.9A EP17739935A EP3469610A1 EP 3469610 A1 EP3469610 A1 EP 3469610A1 EP 17739935 A EP17739935 A EP 17739935A EP 3469610 A1 EP3469610 A1 EP 3469610A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- contact arm
- switching device
- voltage switching
- profile
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000013011 mating Effects 0.000 claims abstract description 28
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000530268 Lycaena heteronea Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/14—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch
- H01H31/16—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member
-
- 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
- H01H1/42—Knife-and-clip contacts
Definitions
- the invention relates to a contact arm for a high-voltage switching device and a method for its use.
- the contact arm comprises at least a movable section bar and at least one contact element for electrically Kunststoffie- Ren a counter contact piece, wherein the one Kon ⁇ clock element is fixed to the mobile section bar at least.
- High voltage switching devices are used for switching high voltages and currents, in particular in the range of up to 1200 kV and up to a few l 'OOO A.
- High-voltage switching devices are ⁇ z. B. earthing switch and disconnector, in particular rotary disconnector, toggle disconnector, or single pivot disconnector.
- a current path is separated at least one contact with a separation line, which z. B. depends on the applied voltage.
- An electrical contact comprises at least two contact pieces which, in the switched-on or electrically connected state of the high-voltage switchgear, are in electrical contact with one another and in particular in mechanical contact with one another.
- the switched-off or electrically disconnected state of the high-voltage switching device the concludeds ⁇ least two contact pieces at a distance angeord ⁇ net, in which no electrical flashovers or Lichtbö ⁇ gene occur.
- an associated mating contact piece is spatially fixed as a fixed contact.
- both contacts of a contact can be moved.
- the movable th contacts are usually on a contact attached to the ⁇ special at the end of the contact.
- z. B a rotary movement about a vertical right axis to the longitudinal axis of the contact arm, the movable ⁇ bare contact piece with the contact arm is moved.
- Contact arms must have a high mechanical stability and comprise elekt ⁇ driven conductive elements and / or be formed electrically conductive.
- As contact arm z. B. tubes with a round or rectangular cross section used. The pipes best ⁇ hen z. B. of copper and / or aluminum.
- the movement of a contact is done z. B. horizontal switches in a horizontal plane, in particular parallel to the earth's surface.
- the movement can also take place in a vertical, ie vertical plane to the earth's surface, z. B. grounding switches.
- motion planes with a certain angle to the horizontal plane and / or to vertical planes can also be used.
- the weight and weight of the movable con ⁇ tact pieces and other parts of the contact arm can lead to a reversible or irreversible deformation of the contact arm, z. B. to a bending of the contact arm.
- contact arms are formed from closed, stable or solid profiles, in particular round or rectangular profiles.
- the great weight of contact arms with a closed or solid profile which is considered below in profiles of the cross section to the longitudinal axis, requires large-sized foundations for the high-voltage switching devices, a lot of energy to generate the movement and associated large drives, which cost ⁇ are intensive and consume a lot of space.
- the object of the present invention is the avoidance or reduction of the problems described above.
- it is an object to provide a contact arm for a high-voltage switching device and a method for its use, wherein the contact arm is inexpensive, is easily movable with less energy consumption and has less weight.
- An inventive contact arm for a high-voltage switching device comprises at least one movable profile bar and at least one contact element for electrical Kunststoffie ⁇ ren of a mating contact piece .
- the at least one Maisele ⁇ ment is attached to the movable profile bar.
- the at least one movable profile bar has at least one open, U-shaped profile.
- a profile bar with open, U-shaped profile is mecha ⁇ African stable and lighter than a profile bar with a closed, round or rectangular profile. This saves material and weight without degrading the mechanical and electrical properties of the contact arm. This saves costs, enables less power a BEWE ⁇ supply when disconnecting or connecting the current path through the con- taktarm, and allows the use of smaller drives with less power, which are cheaper than large drives.
- a contact arm with high mechanical stability and good electrical properties leads to a high-voltage switching device with high durability and good reliability when switching.
- the at least one open, U-shaped profile may have two's ⁇ kelabitese have, which are arranged in particular vertically on a back portion. This gives an on ⁇ construction with high mechanical stability with the previously described surrounded benefits.
- the leg sections can in particular be arranged pointing vertically downwards on the or the back sections.
- B. Eisablage ⁇ tion or due to its own load is effectively prevented by the vertically arranged on the or the spine portions leg portions.
- the one or more back sections may be a gain Jerusalemwei ⁇ sen, in particular a greater thickness in the central region fully ⁇ continuously along the longitudinal axis of the back portions.
- the greater thickness in the central region may be formed on the upper side of the back portions as a reinforcement.
- the at least one movable profile bar may have two, three or more open, in particular parallel to each other arrange ⁇ te U-shaped profiles, which are in particular connected to each other via a web.
- the web can be formed continuously along the longitudinal axis of the contact arm, in particular with the exception of slits.
- the open, U-shaped profiles may have wide areas for attachment of at least one contact element.
- the one or more webs may be narrow.
- Narrow footbridges Combining U-shaped profiles reduces cost and weight by using less material.
- Wide U-shaped profiles allow arranging and attaching contact elements such.
- the contact elements can be arranged in the U-shape, whereby a high mechanical stability and good electrical and mechanical connection between the Kon ⁇ tact element and the profile bar is formed.
- At least two movable section bars in particular depending ⁇ wells having an open U-shaped profile, can be mechanically connected to each other, in particular spaced from one another via at least one spacer element.
- the at least two movable profile rods can be arranged one above the other.
- a spring element can be comprised, which is formed in particular from ⁇ to press at least two movable profile bars aufei- each other.
- at least one spacer element creates a structure analogous to a pair of pliers, which can clamp an object well mechanically between the pliers cheeks.
- slits can be arranged, in particular between U-shaped profiles. The slits can be formed in particular at the two ends of the contact arm.
- a structure analogous to a pair of pliers as described above, arise contact fingers or resilient contact fingers, which in a
- Pliers movement can pinch a mating contact well. This leads to a good mechanical and electrical contact between the contact element of the contact arm and a counter ⁇ contact of the high-voltage switching device. Influences such as wind and induced forces caused by short circuit currents can be compensated by a good clamping of the mating contact between the Maisele ⁇ elements of the contact, so that the reliability permeability of the high voltage switching device is increased in the on or connected state.
- Edges and corners of the contact arm may be rounded.
- all the edges and corners may each with a spe ⁇ -specific radius, depending on the respective position of the edge or corner of the contact arm, be rounded.
- An inventive method for using the contact arm described above comprises that the contact arm in a high-voltage circuit breaker, in particular in a rotary disconnect switch, or in a lever disconnector, in particular
- Toggle disconnector or is used in a single pivot breaker as a high voltage switching device, or that the contact arm is used in a high voltage earthing switch as a high voltage switching device.
- the high-voltage switching device can be designed in the manner of a horizontal switching device.
- the at least one contact element in particular all
- Contact elements in electrical and / or mechanical contact with at least one, in particular all associated respectively mating contact pieces of the high-voltage switching device are.
- a mating contact piece in particular designed as a fixed contact, can be clamped between at least two opposing contact elements, which are each arranged in a U-shaped profile of opposing movable profile bars.
- the pinching can be done in particular by at least one spring element, in particular in Wirkver ⁇ bond with at least one spacer element.
- FIGS. 1 to 5 Embodiments of the invention will now be schematically illustrated in FIGS. 1 to 5 and described in more detail below.
- FIG. 1 shows schematically a horizontal circuit breaker in plan view with a contact arm 1 according to the invention, which in the closed state two mating contacts
- Figure 3 is a sectional view of a profile bar 3 in the cross ⁇ section , perpendicular to the longitudinal axis, with two egg ⁇ shaped profiles, and
- Figure 4 is a sectional view of the profile bar 3 of Figure 3, with reinforcements 14 each on a noted area 13 of the U-shaped profile
- Figure 5 is a sectional view of the profile bar 3 of Figure 4, with three U-shaped profiles.
- a Horizon ⁇ taltrennschalter is shown schematically in plan view with a contact arm 1 according to the invention as a high-voltage switching device.
- contact elements are respectively arranged, which in the closed state of the horizontal circuit breaker two genuttone 2 electrically connect with each other.
- the contact arm 1 is supported by a rotary base 5.
- the contact arm 1 is mechanically fixed to the rotary base 5 and is rotated by a rotation about a perpendicular to the plane of the central axis of the rotary base 5 in the plane of the drawing.
- the horizontal disconnector is shown in a closed or connected, on state.
- a stream may be between the two mating contacts 2, each one disposed on each side along the longitudinal axis of the contact 1, on the contact pieces at the ends of the contact 1 by section bars 3 of the contact 1 flows ⁇ SEN.
- the two mating contacts 2 are electrically connected to each other via the contact arm 1.
- To open the horizontal circuit breaker of the contact arm 1 is rotated about a perpendicular to the plane of the central axis or axis of rotation 19 in Rich ⁇ tion 21, z. B. up to a position of the contact arm 1 in the plane perpendicular to the starting position in the closed state.
- the contact between the mating contact ⁇ pieces 2 is open, it can not flow through the contact arm 1.
- the horizontal disconnector is visibly opened or turned off.
- the current path between the mating contact pieces 2 via the contact arm 1, that is, via the contact pieces at the ends of the contact arm 1 and the Pro ⁇ filstangen 3, is interrupted.
- the contact pieces are not shown in Fig. 1 for the sake of simplicity, since they are arranged on the underside of the contact arm 1.
- the contact arm 1 is rotated by means of the rotary base 5 in the position shown in Fig. 1, opposite to the direction 21.
- Drive, z. B. in the rotary base 5 drives the movement.
- stop pieces 20 which are respectively arranged at the ends of the contact arm 1 on reasonably protruding the sides, with the respective mating contact piece 2, stops the rotational movement to close the circuit breaker.
- the mating contact pieces 2 are electrically connected to each other via the contact arm 1, the current path is closed.
- the slits 4 serve a better contact with the mating contact pieces 2 and are described in more detail below.
- the slits can z. B. be formed by sawing, milling or laser machining in contact arm 1. In the exemplary embodiment of FIG. 1, two slits are formed on each side of the contact arm 1. According to the requirements and the construction of the contact arm 1, one or more than two slots 4 can be formed on each side, or in high-voltage switching devices with only one mating contact 2, the slits can be formed only on the side of the contact arm 1, which points in the direction of the mating contact 2.
- the contact arm 1 comprises two profiled rods 3 arranged one above the other, which are spaced apart from one another by means of one or more spacer elements 7, mechanically connected to one another. At the outer ends are in the interior, opposite each contact elements 6 ange ⁇ arranged and mechanically fixed by means of fastening elements 9 to the profile bars 3 and mechanically fixed and electrically connected to the respective profile bar 3.
- the contact elements 6 can z.
- the electrical contact between the mating contacts 2 and the profile bars 3 is produced in the closed state of the high-voltage switching device.
- the profile rods 3 Kings ⁇ nen z. B. made of copper or aluminum or contain these materials and alloys thereof.
- One or more spring elements 8 generate in the closed state of the high-voltage switching device a good, reliable ⁇ sigen mechanical and electrical contact between the contact arm 1, in particular the contact elements 6, and the respective mating contact piece 2.
- a spring elements 8 presses the spaced, opposite profile bars 3, which are held spaced by spacers 7, respectively at one end of the contact arm 1 together.
- the spring or the elements 8 is spatially spaced from the or
- the finger-shaped structures act analog leaf springs with very high spring constant, which are held by the spacer elements 7 between the opposing profile bars 3 at a distance and are compressed or pressed by the spring elements 8, ie pressed towards each other.
- the finger-shaped structures can also be forced apart, for. B. by a mating contact piece 2 with greater thickness than in particular the distance of the profile ⁇ rods 3 in the region of the spacer elements 7, and the Federele ⁇ elements 8 push the profile bars 3 on the mating contact piece 2.
- a plate-shaped mating contact piece 2 in particular on a base fixed mechanically and physically or buildin ⁇ Untitled, is clamped in the closed state of the high voltage switching ⁇ device between the finger-shaped structures and thus spatially fixed thereto, with good electrical contact on both sides of the contact piece 2 over the contact elements 6 away with the profile bars 3.
- the jewei ⁇ lige counter contact piece 2 is clamped between the stacked profile bars 3, and a good electrical shear contact between the mating contact piece 2 and the contact 1 is given.
- FIG. 3 shows a profile bar 3 of the contact arm 1 according to the invention in a sectional view perpendicular to the longitudinal axis, d. H. in cross section.
- the profile bar 3 comprises two U-shaped profiles, which are interconnected by a web 11.
- the web 11 extends along the entire length of the profile bar 3, with the exception of slits at the ends and possibly included holes in the region of the web 11.
- a U-shaped profile is U-shaped, with down-facing U-shaped profile, such. B. used in the inventive contact arm 1, the opening of the U is down, so the U is upside down.
- the U-shaped profile substantially in the shape of a rectangle formed with the exception of the rounded corners and edges, wherein the lower side of the rectangle is designed to be open, ie lacks.
- the corners and edges of the profiles of the profile bar 3, ie inner edges 17 and outer edges 16 and edges 18, as shown in Figure 4, on the back ⁇ side or top of the section bar 3, and corners 15 at En - de the profile bar 3, are rounded to Koronaerscheinun ⁇ conditions at points or sharp-edged structures to avoid.
- the curves may have different, specific radii, in particular depending on the location on the profile bar 3 and the position relative to z.
- the profile bar 3 of Figure 3 in a sectional view perpendicular to the longitudinal axis, ie in cross-section Darge ⁇ represents, with an additional reinforcement 14 of the back portion 13.
- the back portion 13 is on the top, ie the side which the U-shaped Profile is opposite, reinforced trained.
- the back portion 13 is thicker than in the ⁇ on their areas, eg. B. twice as thick.
- This is the section bar 3 additional mechanical Stabili ⁇ ty, prevents bending of the section bar 3 along the longitudinal axis z. B.
- a further embodiment of the profile ⁇ rod 3 of the contact arm 1 according to the invention is shown, which is shown in a sectional view perpendicular to the longitudinal axis, ie in cross section.
- the profile bar 3 is formed analogously to the profile bar 3 of FIG. 4, with three U-shaped profiles arranged side by side in parallel instead of two U-shaped profiles. shaped profiles, as shown in Figure 4.
- Two U-shaped profiles of the profile bar 3 are connected to each other via a web 11, that is, two webs 11 connect the three U-shaped profiles to a profile bar.
- one or more contact elements 6, and / or spacer elements 7, and / or spring elements 8 and / or fastening elements 9 can be arranged only on the outer or only on the inner U-shaped profiles.
- Slots 4 may each be formed between all U-shaped profiles at the ends, or only between certain, z. B. the outside. It can be a profile bar 3 orletss ⁇ least two opposite, in particular parallel profile rods 3 are used.
- the profile bars 3 may be made of aluminum or other highly conductive materials such. B. copper, or for improved electrical conduction have a core or a coating of good electrically conductive material.
- the profile bars 3 may comprise mechanically stable materials, such as. z.
- the contact elements 6 can be screwed, glued, soldered, welded or attached to the profile bar 3 on or in the U-shaped profile with another mechanically stable, in particular electrically conductive attachment.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Breakers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17739935T PL3469610T3 (en) | 2016-08-03 | 2017-07-06 | Contact arm for a high-voltage switching device and method for the use thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016214380.8A DE102016214380B4 (en) | 2016-08-03 | 2016-08-03 | Contact arm for a high voltage switchgear and method of using it |
PCT/EP2017/067016 WO2018024439A1 (en) | 2016-08-03 | 2017-07-06 | Contact arm for a high-voltage switching device and method for the use thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3469610A1 true EP3469610A1 (en) | 2019-04-17 |
EP3469610B1 EP3469610B1 (en) | 2020-05-27 |
Family
ID=59350904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17739935.9A Active EP3469610B1 (en) | 2016-08-03 | 2017-07-06 | Contact arm for a high-voltage switching device and method for the use thereof |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3469610B1 (en) |
CN (1) | CN109564829B (en) |
DE (1) | DE102016214380B4 (en) |
PL (1) | PL3469610T3 (en) |
WO (1) | WO2018024439A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT162350B (en) * | 1946-11-25 | 1949-02-25 | Elin Ag Elek Ind Wien | Disconnector |
DE1169546B (en) * | 1960-01-13 | 1964-05-06 | Driescher Spezialfab Fritz | High-voltage disconnector with an adjustable actuation isolator |
CH370135A (en) * | 1961-04-07 | 1963-06-30 | Gardy Particip App | High voltage rotary disconnector |
DE1222137B (en) * | 1965-01-15 | 1966-08-04 | Sachsenwerk Licht & Kraft Ag | Disconnector or earthing switch with double cutting blades |
DE1640997B1 (en) | 1967-12-23 | 1971-06-03 | Licentia Gmbh | Earthing and short-circuiting device for electrical switchgear |
FR2867603B1 (en) * | 2004-03-10 | 2006-06-02 | Areva T & D Spa | DIRECT-INSERT, SWIVELD GROUND DISCONNECT SWITCH |
CN102089844B (en) * | 2009-08-13 | 2014-12-17 | 阿海珐输配电意大利股份公司 | Two-column electrical disconnector |
CN202601491U (en) * | 2012-06-05 | 2012-12-12 | 登高电气有限公司 | Outdoor high-voltage isolating switch |
CN103367020B (en) * | 2013-07-24 | 2015-08-05 | 国家电网公司 | Isolating switch and conducting loop structure thereof |
-
2016
- 2016-08-03 DE DE102016214380.8A patent/DE102016214380B4/en active Active
-
2017
- 2017-07-06 EP EP17739935.9A patent/EP3469610B1/en active Active
- 2017-07-06 WO PCT/EP2017/067016 patent/WO2018024439A1/en unknown
- 2017-07-06 CN CN201780047878.2A patent/CN109564829B/en active Active
- 2017-07-06 PL PL17739935T patent/PL3469610T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE102016214380B4 (en) | 2018-10-25 |
PL3469610T3 (en) | 2020-11-02 |
WO2018024439A1 (en) | 2018-02-08 |
CN109564829B (en) | 2020-11-06 |
DE102016214380A1 (en) | 2018-02-08 |
EP3469610B1 (en) | 2020-05-27 |
CN109564829A (en) | 2019-04-02 |
BR112019001261A2 (en) | 2019-04-30 |
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