WO2018024436A1 - Kontaktarm für einsäulentrennschalter und dessen verwendung - Google Patents
Kontaktarm für einsäulentrennschalter und dessen verwendung Download PDFInfo
- Publication number
- WO2018024436A1 WO2018024436A1 PCT/EP2017/067004 EP2017067004W WO2018024436A1 WO 2018024436 A1 WO2018024436 A1 WO 2018024436A1 EP 2017067004 W EP2017067004 W EP 2017067004W WO 2018024436 A1 WO2018024436 A1 WO 2018024436A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- contact arm
- arm
- contact element
- profile body
- Prior art date
Links
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
- H01H31/34—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching
- H01H31/36—Contact moved by pantograph
Definitions
- the invention relates to a contact arm for one-column disconnector and its use, with at least one profile body and with at least one contact element.
- the least ⁇ at least one profile body is rod-shaped and the at least one contact element is rod-shaped.
- Single column disconnectors are for visibly disconnecting a current path in the high voltage range, i. H. especially in the range of up to 1200 kV voltage.
- a typical structure of a single column disconnector includes at least one contact with a movable and a fixed contact piece.
- the solid contact piece, d. H. the fixed contact is z.
- the contact piece is made of a material such. As copper, which conducts electrical power well, and / or aluminum.
- the movable contact piece is z. B. in the form of a contact ⁇ arms.
- the contact is pivoted to connect or disconnect the current path to the fixed contact or away from the fixed contact.
- In the connected and switched-on condition -is necessary a good electrical contact between the fixed contact and the movable contact arm to direct loss ⁇ free or at least Low loss electric current via the contact.
- the contact arm is made of a metal tube with a circular cross-section, there is only a small support or contact surface between the metal tube of the contact arm and the metal tube of the fixed contact. Consists of Kon ⁇ taktarm from a metal rod of rectangular cross section, the contact area is increased. This leads to a bes ⁇ sera electrical contact in the closed state of the
- the separation distance of the single column disconnector is clearly visible to the outside, the device is not encapsulated and not installed in a housing.
- the elements or parts of the Einsaulentrennschalter the weather conditions are ⁇ sets. Wind and / or ice load can lead to movement of the movable contact piece, in particular to a movement away from the fixed contact, which deteriorates the electrical contact and thus leads to higher electrical losses over the contact away. In extreme cases, can ⁇ on separate take place the current path, unintended and negative consequences for the connected power grid. In a short circuit, high currents can cause forces, eg. B.
- 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 single-column disconnector and a method for its use, which enable a reliable function, in particular with low electrical losses in the connected state of the single-column disconnector.
- An inventive contact for Pantograph comprising at least a profile body and at least one Kon ⁇ clock element, wherein the profile body is designed rod-shaped and wherein at least which is formed at least one contact element ⁇ rod-shaped.
- the contact element has a T-profile.
- the contact element with T-profile results in a good electrical contact in the closed state of the one-column disconnector, with low electrical losses and low resulting costs, especially in adverse weather conditions such. B. in wind and ice formation and / or short circuits in the network. Due to the larger contact surface of a T-profile with respect to a tubular, ie O-profile with a smaller cross section or other surface shape is, the pantograph disconnector in the closed state to a ⁇ more reliable current flow with low electrical losses possible.
- a round rod as a fixed contact which rests on a T-profile of a moving contact can have an elongated Kon ⁇ clock area, as opposed to a point-like contact surface with the use of two round, rod-shaped contact pieces. Also by changing radii or surface profiles relative to the O-profile of a round bar of the fixed contact, an improved contact can be achieved. A higher reliability of the contact during movement of a contact piece along the longitudinal axis of the contact piece is given by the larger contact surface, since the contact may only be interrupted locally along the longitudinal axis and not completely. A larger footprint also results in a better flow of current, with lower electrical losses.
- the at least one contact element may have a T-profile along its entire length, in particular exactly one T-profile, and be designed in the form of an elongate, straight busbar with at least one electrical contact surface.
- a contact element with a same profile over the entire length, in the form of a T-shaped busbar results in a good ⁇ electrical contact in the closed state of the Einklalentrennschalters regardless of the exact location of the ⁇ movable contact piece relative to the fixed contact on the surface of the T. -profile.
- the contact arm can easily bend due to the weight of the ice, a good contact with the fixed contact is possible because the contact is independent of the exact location of the fixed contact on the surface of the T-profile of the
- the surface is the same along the length of the T-shaped bus bar för ⁇ and produces everywhere the same contact, regardless of the location on the surface.
- the at least one contact element may be formed rounded at its upper side with a radius r.
- the entire top surface of at least one contact element may be istrun ⁇ det, wherein the top surface forms an electrical contact surface.
- the contact pieces may contact one another in the event of a short circuit and / or when moved by wind or ice. unroll, without changing the effective contact surface or losing contact. As a result, a good electrical contact is maintained at any time in the closed state of the single-column disconnector and electrical losses or uncontrolled opening of the contact avoided.
- the at least one contact element can be constructed from a vertical and a horizontal web, wherein the transition of the two webs is formed at right angles.
- the at least one contact element may be constructed of a vertical and a horizontal web, wherein the transition of the two webs is rounded on each side, in particular with a radius which extends on each side over the entire length of the horizontal web and / or with a radius which extends on each side over the entire length of the vertical web.
- the shape may be dependent on the shape of the profile body, wherein the contact element is adapted in or on the profile body.
- good contact between the contact element and the profile body is to be achieved with a contact element which has a transition of the two webs formed at right angles and can be let into the groove.
- good contact between the contact element and the profile body with a contact element is to achieve, which has a rounded Pleasebil ⁇ Deten transition of the two webs and can be inserted positively in the groove.
- a good mechanical fit of the contact element on or in the profile body as a good electrical contact between the profile body and contact element can be achieved.
- the at least one profile body may be formed substantially rectangular, in particular with rounded corners and edges.
- the profile body may be hollow, and / or have on one side a groove, in particular a through ⁇ common groove, in which the contact element can beLelas ⁇ sen.
- a groove is also to be understood hereinafter also a gap or continuous slot.
- the at least one profile body may alternatively consist of two rod-shaped bodies, in particular two rod-shaped hollow bodies, which are arranged parallel to one another and essentially each have an oval shape with two parallel, flat sides, in particular with two sides connected by a connecting web. Between the two rod-shaped bodies, the contact element can be embedded, in particular form-fitting manner. The contact element so fitted in the profile body can be fixedly connected to the profile body in a mechanically fixed manner, whereby a mechanically stable contact arm with good electrical line properties is produced over the entire contact arm.
- the at least one profile body and the at least one con ⁇ clock element may be connected together by screws and / or bolts, in particular arranged on at least one lateral vertical face which is disposed below the top surface of the contact element, wherein the top of the
- Contact element forms an electrical contact surface, which is designed for producing an electrical contact with a fixed contact of the single-column disconnector. Screws and bolts are suitable for producing a long-term stable and well-electrically conductive connection. Due to the arrangement of the fastening parts, such. B. of screws and / or bolts on the lateral vertical surface, the surface of the contact element on its upper side, ie the contact ⁇ surface with the fixed contact, free of fasteners, which could interfere with good contact. As a result, the entire contact surface is available for contact.
- the at least one contact element may be made of copper surebil ⁇ det. Copper has good electrical properties and can be mechanically stable processed.
- the at least one profile body may be formed of copper or aluminum.
- Copper and aluminum as metals have good electrical properties, with aluminum having a better mechanical stability and copper enables bes ⁇ sere, low-loss current conduction. Both metals are suitable to form a mechanically stable profile body and to allow a good electrical power line over the entire profile body away.
- the contact element is also mechanically stabilized by the mechanically stable profile body.
- An inventive method of using a contact ⁇ arms in a pantograph disconnectors, in particular of a contact as described above comprises that, in the inserted scarf ⁇ ended state, the current path of the pantograph disconnector, a T-shaped contact element of said movable contact, buildin ⁇ Untitled on a profile body of the contact arm, electrically and mechanically in contact with a fixed contact, in particular ⁇ with a fixed contact in the form of a round rod.
- FIGS. 1 to 7 Exemplary embodiments of the invention will now be described schematically in FIGS. 1 to 7 and described in more detail below.
- the Figure 1 shows schematically in perspective view a pantograph disconnectors 1 with a fixed contact 19 and Inventive ⁇ proper contact arms 2, and
- Figure 2 shows a contact arm 2, as shown in Fig. 1, with a rectangular profile body 5 and a
- Figure 4 shows an alternative contact arm 2, as shown in Fig. 1 in the single column disconnector 1, with two oval profile bodies 5 and a fitted contact element 6 in cross-sectional view, and
- FIG. 6 shows a contact element 6, constructed from two webs 8,
- FIG. 1 a single column disconnector 1 with a fixed contact 19 and four contact arms 2 according to the invention is shown schematically in an oblique view.
- the one-column switch 1 shown is designed in the manner of a pantograph or gripping separator.
- the one-column circuit breaker 1 is connected to a phase of the mains and can, for. B. be associated with a high-voltage circuit breaker.
- a power supply system generally has 3 phases, each phase depending ⁇ wells switched through with the aid of a high-voltage circuit breaker.
- the high-voltage power switch which is not shown in the figures for the sake of simplicity, switches on or off the current flow or the high voltage as required, ie the current path is connected or disconnected.
- the contact for switching is encapsulated in a high-voltage circuit breaker, whereby its switching state is not visible from the outside.
- the current path is additionally visible to the outside, disconnected by a circuit breaker after switching off the high-voltage circuit breaker.
- the current path Before switching on the high-voltage circuit breaker, the current path is visible to the outside, connected by a circuit breaker.
- B. arcs when switching to master.
- a disconnector is designed to make the switching state visible after switching off or before switching on and to reliably ensure that there is no voltage on the power line.
- the single-column disconnector 1 as shown in Figure 1 as an embodiment as a pantograph separator, has a spatially fixed fixed contact 19, which is electrically connected to a phase or line of the power grid or a high-voltage circuit breaker.
- the current path of the phase is connected or separated by movement of at least one movable contact arm 2 to or from the fixed contact 19 toward or away.
- the current path is closed or electrically conductively connected across the single-column disconnector 1.
- the current path is separated across the single-column disconnector 1, ie a possible current flow is prevented.
- a one-column disconnector 1 in the manner of a pantograph separator with four contact arms 2, in the form of two Maisarmpasen 3, 4 is formed.
- the four contact arms 2 move toward the fixed contact 19 or away from the fixed contact 19 until a good contact between the contact arms 2 with the fixed contact 19 is achieved or the electrical contact is safely disconnected.
- the movement is z. B. via a motor, which is the
- the contact according to the invention 2 which is of rectangular cross section forming ⁇ in the embodiment of Figure 2, has a profile body 5 and a related spatially and electrically conductive contact element.
- the Pro ⁇ filêtelasticity 5, 13 is internally hollow, rod-shaped, with a rectangular cross section perpendicular to the rod longitudinal axis.
- the edges of the profile body 5 are rounded to prevent discharges at corners and edges.
- the groove is linear, formed along the longitudinal axis of the profile body 5, and connects the inner and the outer space of the profile body fifth
- a contact element 6 is arranged or positively inserted.
- the contact element 6 is rod-shaped, ie elongated, in particular without being hollow on the inside.
- the contact element 6 has a T-shape in cross section and is analogous to a rail. Laterally are holes through the contact element 6 through, arranged on a verti- cal surface 18, which holes in a mallli ⁇ chen surface of the profile body 5, are associated. 13 Schrau ⁇ ben 10 and / or bolt can be guided through the holes of the contact element 6 fasten mechanically stable and / or highly electrically conductive to the profile body. 5
- FIG 3 is a section of the contact arm 2, which is shown in Figure 2 in profile, ie cross-section perpendicular to the longitudinal ⁇ axis shown in an oblique view.
- the groove, ie the slot in the profile body 5, in which the T-shaped contact element 6 is fitted, is shown for better Verupschau ⁇ lichung in the rear without and in the front region with arranged contact element 6.
- the profile body 5 may, for. B. made of copper or aluminum.
- the contact element 6 can consist of copper for good electrical conductivity and good electrical contact and is held mechanically stable via the profile body 5.
- a contact arm 2 is shown an alternative to the structure of the figures, instead of having a profiled body 5 with a rectangular cross-section two parallel arranged profile ⁇ body 5 with an oval cross-section.
- the oval cross-section is composed of two flat, paral ⁇ Lelen sides 15, 16 which are connected via a perpendicular to the sides 15, 16 connecting bar 17 which extends along the length of the profile body 5 with each other mechanically in the middle, and two Semicircles with radius r, which each connect the opposite ends of the planes 15, 16 parallel to the connecting web 17 with each other.
- FIG. 5 shows an off or section or region of the contact arm 2 of FIG. 4 in an oblique view.
- the two profile body 5 are spaced, parallel to each other angeord ⁇ net, whereby a gap between the profile bodies 5 is formed.
- Screws 10 or bolts can be used to connect the profile body 5 with each other and with the contact piece 6 mechanically stable.
- the screws 10 with nuts can, as shown in Fig. 4, hold over the outer sides 15, 16 of the contact arm 2 and the two profile body 5, the contact arm together and / or press.
- the screws 10 with nuts on inner surfaces 18 of the profile body 5 act to the contact arm or to hold the profile body 5 and the contact piece 6 together and / or to press.
- the contact piece 6, as shown in sectional representation perpendicular to the longitudinal axis of the contact piece 6 in FIGS . 6 and 7, has two webs 8 and 9.
- the T-shape is formed by a vertical, lower web 8 or beams and a horizontal web 9 or beams on the underlying vertical web 8. With the underside of the horizontal web 9, the contact piece 6 rests on the profile body 5.
- the vertical web 8 is arranged between, see Figures 4 and 5, the profile bodies 5 or in, see Figures 2 and 3, profile body 5.
- the contact element 6 is a Krüm ⁇ mung, ie the ridge 9 is bent on its upper side facing upwards or circular with a radius r trained.
- the curvature extends along the cross section of the contact elements 6 ⁇ from one to the other side, along the entire width of the horizontal web 9 in Figures 6 and 7.
- a fixed contact can roll 19 at Be ⁇ movement of the contact arm 2 relative to the fixed contact 19 on the curved upper surface of the contact element.
- 6 A movement arises z. B. by environmental influences such as wind or ice covering the contact arm 2 or short-circuit currents, by forces from magnetic fields current-carrying conductor.
- the curved surface 7 remains in the closed state of the one-column disconnector 1, when moving the Kon ⁇ clock 2 relative to the fixed contact 19 a constant electrical contact, with the same size contact surface between the contact arm 2 and the fixed contact 19 is obtained.
- the electrical contact in the closed state of the one-line isolating switch 1 remains the same time, despite Schoeinüs ⁇ sen such. As wind and ice and / or short-circuit currents.
- a good electrical and mechanically stable contact between the contact element 6 and the profile body 5, is formed by the largest possible common contact surface.
- a large contact surface is formed between the contact element 6 and the profile body 5, with a right-angled transition 11 of the vertical one and horizontal web 8, 9 at the contact point.
- a right-angled inner edge 11 on both sides of the T-shaped con ⁇ tact element 6 allows a positive insertion of the contact element 6 in the groove or column of the profile body 5 of Figures 2 and 3.
- a large contact area between the contact element 6 and the profile bodies 5 is formed in curved transition 11 of vertical and horizontal web 8, 9 at the contact point.
- a rounded inner edge 12 on both sides of the T-shaped contact element 6 allows a positive insertion of the contact element 6 in the gap between the oval profile bodies 5 of Figures 4 and 5.
- the radius r of the transition 12 and the radius r of the oval ends of Profile body 14 is substantially the same size.
- the contact arms z. B. be used in various types of single column disconnectors 1.
- Pantographs, separators with one, two or more contact arms 2 can be used. It can be used instead of one-column disconnectors 1 and disconnectors with several, in particular movable columns.
- the disconnectors can be used for one or more phases in the power grid.
- the profile body 5 may have different shapes.
- An oval-shaped profile body 5 may have an elliptical cross-section.
- one or a respective contact element 6 may be arranged in or in the slots. It may also be arranged two or more profiled element 5, in particular parallel to one another, as shown in FIGS. 4 and 5, and the contact element 6 or the contact elements 6 may be each ⁇ arranged wells between the profile bodies 5 between or the like.
- This profile body 5 cross sections such. B.
- profile body 5 may be formed with the same cross-section or with different cross sections, in particular under ⁇ Kunststoffaji form. Combinations of the exemplary embodiments of FIGS. 2, 3 and 4, 5 can also be used, with contact elements 6 between profile bodies 5 and in FIG.
- the contact elements 6 and profile body 5 can be replaced by screws 10 or bolts z. B. be joined together by welding or gluing.
- Contact elements 6 and / or profile body 5 may be coated for better electrical conductivity, for. B. be silvered. In particular, Kon ⁇ clock surfaces between parts or elements of the contact arms 1 may be coated.
- Profile body 5 and / or contact elements 7 may be made of a material, in particular a good conductive material such. As copper, steel or aluminum, and / or may include different Materia ⁇ materials and / or alloys. Reference sign list
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112019001271-0A BR112019001271A2 (pt) | 2016-08-03 | 2017-07-06 | braço de contato, e, método para usar um braço de contato. |
CN201780047886.7A CN109564831B (zh) | 2016-08-03 | 2017-07-06 | 用于单柱式隔离开关的接触臂及其应用 |
EP17739932.6A EP3469612B1 (de) | 2016-08-03 | 2017-07-06 | Kontaktarm für einsäulentrennschalter und dessen verwendung |
PL17739932T PL3469612T3 (pl) | 2016-08-03 | 2017-07-06 | Ramię stykowe dla odłącznika jednokolumnowego i jego zastosowanie |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016214372.7A DE102016214372B4 (de) | 2016-08-03 | 2016-08-03 | Kontaktarm für Einsäulentrennschalter und dessen Verwendung |
DE102016214372.7 | 2016-08-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018024436A1 true WO2018024436A1 (de) | 2018-02-08 |
Family
ID=59350901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2017/067004 WO2018024436A1 (de) | 2016-08-03 | 2017-07-06 | Kontaktarm für einsäulentrennschalter und dessen verwendung |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3469612B1 (de) |
CN (1) | CN109564831B (de) |
BR (1) | BR112019001271A2 (de) |
DE (1) | DE102016214372B4 (de) |
PL (1) | PL3469612T3 (de) |
WO (1) | WO2018024436A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020064275A1 (de) * | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Kontaktanordnung für einen trennschalter und verfahren zum elektrischen kontaktieren der kontaktanordnung |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018216721A1 (de) * | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Kontaktarm und Verfahren zum Kontaktieren für einen Trennschalter |
DE102019213320A1 (de) | 2019-09-03 | 2021-03-04 | Siemens Energy Global GmbH & Co. KG | Einsäulen-Trennschalter mit Vakuum-Schaltröhre als Hilfskontaktsystem |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3388225A (en) * | 1966-09-29 | 1968-06-11 | Ite Circuit Breaker Ltd | Jaw for ice breaking switch |
DE3006676A1 (de) * | 1980-02-22 | 1981-08-27 | Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen | Scherentrennschalter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE555956C (de) | 1930-09-03 | 1932-08-01 | Siemens Schuckertwerke Akt Ges | Drehtrennschalter |
CH659539A5 (de) * | 1982-05-28 | 1987-01-30 | Sprecher & Schuh Ag | Scherentrennschalter. |
WO1992007373A1 (de) * | 1990-10-12 | 1992-04-30 | Elin Energieversorgung Gesellschaft M.B.H. | Trennschalter |
CN102543549B (zh) * | 2012-02-10 | 2014-01-29 | 成都中工电气工程有限公司 | 轨道交通隔离开关本体 |
-
2016
- 2016-08-03 DE DE102016214372.7A patent/DE102016214372B4/de active Active
-
2017
- 2017-07-06 CN CN201780047886.7A patent/CN109564831B/zh active Active
- 2017-07-06 BR BR112019001271-0A patent/BR112019001271A2/pt active Search and Examination
- 2017-07-06 WO PCT/EP2017/067004 patent/WO2018024436A1/de unknown
- 2017-07-06 EP EP17739932.6A patent/EP3469612B1/de active Active
- 2017-07-06 PL PL17739932T patent/PL3469612T3/pl unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3388225A (en) * | 1966-09-29 | 1968-06-11 | Ite Circuit Breaker Ltd | Jaw for ice breaking switch |
DE3006676A1 (de) * | 1980-02-22 | 1981-08-27 | Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen | Scherentrennschalter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020064275A1 (de) * | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Kontaktanordnung für einen trennschalter und verfahren zum elektrischen kontaktieren der kontaktanordnung |
CN112771636A (zh) * | 2018-09-28 | 2021-05-07 | 西门子能源全球有限公司 | 用于隔离开关的接触装置和用于接触装置的电接触的方法 |
Also Published As
Publication number | Publication date |
---|---|
CN109564831A (zh) | 2019-04-02 |
PL3469612T3 (pl) | 2020-08-24 |
DE102016214372A1 (de) | 2018-02-08 |
EP3469612A1 (de) | 2019-04-17 |
DE102016214372B4 (de) | 2020-01-09 |
EP3469612B1 (de) | 2020-03-04 |
CN109564831B (zh) | 2020-10-30 |
BR112019001271A2 (pt) | 2019-04-30 |
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