WO2018054615A1 - Ensemble manchon de câble interruptible - Google Patents

Ensemble manchon de câble interruptible Download PDF

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Publication number
WO2018054615A1
WO2018054615A1 PCT/EP2017/070706 EP2017070706W WO2018054615A1 WO 2018054615 A1 WO2018054615 A1 WO 2018054615A1 EP 2017070706 W EP2017070706 W EP 2017070706W WO 2018054615 A1 WO2018054615 A1 WO 2018054615A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
electrical
drive unit
unit
phase
Prior art date
Application number
PCT/EP2017/070706
Other languages
German (de)
English (en)
Inventor
Christian Schacherer
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2018054615A1 publication Critical patent/WO2018054615A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Definitions

  • Interruptable cable sleeve assembly The invention relates to an interrupting cable sleeve
  • Cable sleeve arrangement for interruptible connection of two electrical line sections of an electrical line of a phase of a cable, in particular the medium voltage level ⁇ .
  • the medium voltage cables In the medium voltage level to supply Indust ⁇ rieanlagen, population centers or office or residential buildings cables used for power generation. Are medium-voltage cable ⁇ connected to transformers or consumers, the medium voltage cables conventionally two switchgear must be done.
  • the first switchgear the distribution of energy and to protect against overcurrents with a circuit breaker
  • the second switchgear has a load switch, which is usually used for isolation in the case of maintenance of connected equipment.
  • a second Leis ⁇ circuit- breaker is necessary.
  • a switchgear for example, ⁇ width, height and depth
  • isolation distances additional installations, as it may be in ⁇ example current and voltage converter, a free volume for controlling a pressure increase in the event of an arc fault and determined by the Dimen ⁇ sioning of the circuit breaker and load switch used.
  • switchgear is used to install required circuit breakers, circuit breakers, in particular at a consumer, which are designed as switching fields in the case of several consumers or phases.
  • a switchgear essentially has a primary side Housing for personal protection, a switching element and other elements for grounding or to provide an isolation route.
  • a conventional switchgear requires for a direct connection of an electrical line, in particular a cable, to a consumer at least two so-called fields, namely a connection pad and a feeder panel. In one of the two fields, the circuit breaker is positioned.
  • EP 2461339 Bl discloses a Schutzschalterpol with egg ⁇ ner vacuum interrupter and an operating apparatus.
  • the object is achieved by a cable according to the main claim and a method according to the independent claim.
  • a cable sleeve assembly particularly for electric power supply, and in particular the medium voltage level, proposed in which within a cable joint between two electrical plinsabschnit ⁇ th an electrical line to a phase of an electrical cable, a switchable by means of a drive unit under ⁇ breaker unit electrically connected in series and the drive unit is connected to a signal transmission line arranged in the cable for electrical power supply.
  • a method for connecting a cable sleeve arrangement, in particular to an electrical power supply, in particular on the Mittelwoodsebe ⁇ ne, in the vicinity of an electrical load, wherein between two electrical line sections of an electrical line of a phase of an electric Cable a switchable by means of a drive unit Unter ⁇ breaker unit electrically connected in series and the drive unit to a arranged in the cable signal transmission line for electrical power supply and are enclosed by a cable sleeve.
  • a cable sleeve is a device for isolating and protecting an electrical connection of two electrical cable or cable sections, wherein the cable sleeve - as opposed to a protective tube - are permanently connected to the cable and only the actual electrical junction encloses ⁇ SEN.
  • a differentiation is made between cast resin couplings, gel couplings, shrink sleeves (heat shrink and cold shrink sleeves), and sleeves in push-on technology. In power engineering, these may vary in different voltage levels, such as low or medium voltage
  • a ground sleeve serves not only as insulation and protective element, but also constitutes an electrical connection.
  • An interrupter unit can be formed as a last scarf ⁇ ter or as a power switch in particular.
  • load switches are used to switch on and off equipment and system parts in undisturbed operation, in particular at rated current.
  • Circuit breakers are special switches designed for high currents. Unlike circuit breakers, they can not just switch operating currents and low overload currents, but also in case of errors high overload currents and short circuit currents ⁇ . These fault currents can be hold the given time and switch off safely. Circuit breakers are in particular constructed as single pole or three pole.
  • a cable of a power supply directly to a busbar or a central connection point can be connected.
  • the required power or load switch is installed at a suitable location in the cable and protected with a sleeve and insulated. It is thus provided a kind of switchable cable sleeve.
  • Switchgear especially in the vicinity of an electrical consumer, with a connection field and a departure field, be avoided.
  • the signal transmission line may be a measuring and / or control line, in particular an optical waveguide.
  • the drive unit can be electrically connected in series with the interrupter unit.
  • the interrupter unit can be designed as an electrical feedthrough with a movable switching contact, and in particular with a capsule.
  • the drive unit may be formed as a coupling member with a winding body.
  • the cable can be three-phase and be created for each phase within ei ⁇ ner cable sleeve an interrupter unit and drive unit, the cable sleeves along the cable can be spatially offset from each other.
  • FIG. 1 is a schematic sectional view of an electrical feedthrough according to a first embodiment
  • FIGS. 2 to 4 show schematic representations of an embodiment of a coupling element according to the invention at different times of its movement
  • Figure 9 is a schematic sectional view of an embodiment of OF INVENTION ⁇ to the invention the cable. 10 is an illustration for connecting a
  • FIG. 11 is an illustration of an amongsbei ⁇ game of a method according to the invention for connecting.
  • Figure 1 shows a schematic sectional view of an electrical feedthrough according to an embodiment of an interrupter unit 507 according to the invention.
  • the interrup ⁇ cheratti 507 is designed here as a current interrupting implementing according to DE 10 2015 212826.1. Shown is a section with a cutting direction along the desired Stromtransportides.
  • the electrical feedthrough I serves to connect two conductor sections 3a and 3b, which can be integrated into a higher-level circuit.
  • the electrical feedthrough I serves 3a for connecting these two conductor sections and 3b through the wall of a housing through, for which the bushing is formed with a here electrically conductive connection ring 21 I, with the wall of Ge ⁇ koruses a dense and in this case also electrically conducting de Can connect.
  • the connecting ring 21 should be grounded here, so it can be connected, for example, with a grounded Ge ⁇ housing.
  • An integral part of the implementation I here is a gas-tight capsule 9. Inside the gas-tight capsule 9 extends an inner conductor 11, which can electrically conductively connect the two conductor sections 3a and 3b. This inner conductor 11 is guided electrically isolated from the outer wall 13 of the capsule 9.
  • the electrical feedthrough I furthermore has an electrical switch.
  • the contact system 15a in this case has two switching contacts 25a and 25b, of which the switching contact 25a is designed as a fixed contact and the contact 25b as a movable switching contact.
  • the movable switching contact 25b can be moved along the direction 15c by means of the externally arranged drive unit 15b.
  • a bellows 16 disposed around the top portion shown in the drawing of the inner conductor 11 at ⁇ way of example in the area of the outer wall 13 of the capsule.
  • the capsule 9 of the first embodiment shown here encloses a vacuum space V, through the evacuated interior of the inner conductor 11 is electrically isolated against the to be connected to the wall of the housing connecting ring 21 puncture resistant.
  • the capsule 9 of this electrical feedthrough I thus serves for one of the electrical insulation of the inner conductor, on the other hand simultaneously as a vacuum capsule for the arranged within the implementation of contact system 15a of the switch. It is essential for the present invention that at least a part of the electrical insulation of the bushing and an encapsulation of the contact system 15a of the
  • the outer wall 13 of the capsule 9 has an electrically insulating ⁇ the material, for example, an insulating ceramic. On its outer side, this outer wall 13 may additionally be provided with an electrically conductive coating 23. This coating 23 is advantageously a high-resistance Be ⁇ coating, which serves to avoid electrical Feldüberhöhungen in the outer region of the capsule.
  • an electrically conductive shield 19 surrounding the two switching contacts 25a and 25b is arranged.
  • This shield 19 may be made of a metallic material, for example. It is here electrically conductively connected to the connecting ring 21, which serves to connect the bushing 1 with the wall of a housing surrounding an electrical component.
  • This shield 19 serves on the one hand to shape the electric field formed in the interior of the capsule 9, but on the other hand also serves to limit the propagation of metallic material evaporated during the switching operations.
  • a drive unit 505 can be embodied, for example, as the drive unit 15b illustrated in FIG.
  • the drive unit can for example be designed as a coupling ⁇ member 10 for an electric switching device according to DE 10 2015 200135.0.
  • Figures 2 to 8 describe such a coupling member 10, which serves to open and close the electrical switching contacts 25a and 25b of an interrupter unit 507.
  • Fig. 2 to Fig. 4 show a first variant of an OF INVENTION ⁇ to the invention the coupling member 10.
  • the coupling member is a contact system consisting actuated from the disc-shaped switch contacts 1 and 2, for which purpose the switching contact 1 is moved relative to the switching contact 2.
  • the switching contact 1 is attached to a lower end 301 of the winding ⁇ body 3, which is hereinafter also be ⁇ draws as a winding rod.
  • the winding body 3 is guided linearly displaceable along its longitudinal axis and can not be rotated.
  • a rotary body 4 is rotatably mounted, that is, the rotary body can rotate on the winding body.
  • the rotary body comprises two spaced-apart discs 401 and 402, between which there is an annular bearing 403, via which the bearing of the
  • Rotation body 4 takes place on the winding rod 3.
  • the winding ⁇ body 3 extends through corresponding holes in the middle of the discs 401 and 402 through the bearing 403 therethrough.
  • the coupling member of Fig. 2 is characterized in that a rotational movement of the rotary body 4, which is generated by means of a drive, not shown (eg a spring or an external motor), in a linear movement of the switch contact 1 using flexible wires. 6 and 6 'is implemented.
  • a drive not shown (eg a spring or an external motor)
  • flexible wires. 6 and 6 ' is implemented.
  • two opposing flexible wires 6 are seen before ⁇ , offset by 180 ° to each other at one end to the edge of the disk 402 and at the other end to the upper End 302 of the winding rod 3 are connected.
  • Fig. 2 the state is shown in which the two switching contacts 1 and 2 are in interruption ⁇ position.
  • the two wires 6 ' are wound on the lower part of the winding body 3, so that the free lengths of these wires are shortened and the switching contact 1 is arranged in an upper position with a maximum distance from the switching contact 2.
  • the flexible wires 6 are on the upper side 405 of the rotary body 4 in the unwound state.
  • the coupling member can be locked by suitable locking mechanisms (releasable) both in the contact position and in the interruption position.
  • the arrangement of the wires shown in the embodiment of FIGS. 2 to 4 can be varied as required. In particular, more than two wires may optionally be provided on each side of the rotary body, for example if, for example, the force to be transmitted exceeds the permitted tensile load of only two wires.
  • wires can also be provided only on one side of the rotating body 4, in order to enable a force to be exerted in one direction only, for example because the gravitational force for moving the winding rod is sufficient in the other direction.
  • the vertical direction from top to bottom in FIG. 2 to FIG. 4 corresponds to the direction of the gravitational force
  • FIGS. 5 to 8 show variants of the invention
  • Coupling member The same or corresponding components are denoted by the same reference numerals as in the embodiment of FIGS. 2 to 4.
  • the structure and the mode of operation of the coupling elements from FIGS. 5 to 8 correspond as far as possible to the coupling element from FIG.
  • the coupling element according to FIG. 5 substantially corresponds to the coupling element from FIGS. 2 to 4, wherein a relatively thin winding rod is used as the winding body 3, which in turn results in less wire being unwound per revolution of the rotation body 4. is wound and thereby a slower movement of the bobbin and da ⁇ with a slower opening or closing of the contacts 1 and 2 is effected.
  • FIG. 7 shows one form of the bobbin 3, wherein the re unte ⁇ part of the bobbin on the side 404 of the Rotationskör ⁇ pers 4 is bottleneck-shaped configuration with a decreasing diameter toward the switching contact 1. Is thereby a degressive course of translation is achieved, that is, the farther is the linear movement of the winding body 3 downward fortge ⁇ steps, the slower the movement. This allows a gentle placement of the switch contact 1 on the
  • Switching contact 1 from the interruption position is preferred, but at the same time the closing speed is to be increased with almost closed switching contacts, for example, to avoid electrical flashovers.
  • This variant of the invention is very well suited for use with switching contacts in a vacuum interrupter.
  • spring elements 5 are also introduced in the upper wires 6.
  • these spring elements may also be provided in the wires 6 '.
  • the bias of the wires can be precisely adjusted. Any differences in the winding speeds Un ⁇ the wires 6 and 6 'on opposite sides of the winding body can be absorbed by the spring elements and result in only a slight change in the bias of the wires.
  • the spring elements can be designed so that they have a relatively wide Einfederungsweg and thereby stably maintain the bias even over a long operating ⁇ time.
  • the upper part of the bobbin is further made cylindrical.
  • the upper part of the winding body is executed in the same way as the lower part.
  • the upper part of the bobbin except for the piece which is in closing the contact in the bearing
  • the embodiments of the invention described above have a number of advantages.
  • the desired lever ratio can be easily determined and easily influenced by the shape of the winding ⁇ body in a wide range.
  • progressive and degressive shapes of the bobbin can be used to appropriately influence the speeds in the end positions of the switching contacts.
  • the wires used are further designed with spring elements or elastic, whereby a stable and permanent bias of the wires is achieved and eventual- running differences between the upper part and the lower part of the winding body can be compensated.
  • Fig. 9 shows a schematic sectional view of an exemplary embodiment of an inventive ⁇
  • Cable sleeve arrangement K An interrupter unit 507 and a drive unit 505 are both enclosed, encased or enclosed by a cable sleeve 501.
  • elements 19 and 21 can of Figure 1 entfal ⁇ len.
  • the switchable cable sleeve assembly K includes a breaker unit 507, a drive unit 505, and more particularly to integrated measurement and communication devices as examples of signal transmission lines 509, the interrupter unit 507 and the drive unit 505 here elekt ⁇ driven in series with an electric line 503 a phase of a electric cable have been connected to the power supply.
  • the drive unit 505 may be electrically connected in parallel to the interrupter unit 507.
  • the interrupter unit 507 may for example be a herkömm ⁇ Liche vacuum interrupter.
  • the drive unit 505 has the interrupter unit can switch 507, here is on voltage potential and is powered by a built-in already in herkömmli ⁇ chen cables electrically non-conductive compound such as an optical waveguide as Signalionattra ⁇ supply line 509 with power. This Lichtwellenlei ⁇ ter can also be used for communication and transmission of measured values.
  • the signal transmission line 509 shown schematically in FIG. 9 can be provided running outside and / or inside the cable sleeve 501.
  • the drive unit 505 can be designed such that it is part of the current-carrying phase of the cable, thus interrupting the electrical line 503 of the cable at this point.
  • the switchable sleeve assembly K In order to keep the diameter of the switchable sleeve assembly K small, only one phase is switched at one point in the cable.
  • the switchable sleeve assemblies K for the other phases do not become mutually exclusive created far away places in the cable.
  • a central star-like connection point for the electrical lines 503 can be provided for this purpose.
  • FIG. 9 On the left side in FIG. 9 it is shown that the electrical cable can be made in three phases. For this purpose, a star point, and other electrical elements indicated ⁇ . Each phase can a cable sleeve arrangement K aufwei ⁇ sen.
  • Fig. 10 is a diagram for connection of an electrical ⁇ 's cable in the vicinity of an electrical consumer. The illustration shows the displacement of a load or power switch ⁇ from a switchgear in a respective voltage ⁇ cable with an electrical line 505, in particular on a medium voltage level, by means of an inventive
  • Cable sleeve assembly K with a cable sleeve 501 with a respective single-phase voltage switch to voltage potential can reduce effort compared to a conventional switchgear.
  • a compact embodiment of the cable sleeve arrangement K can reduce effort compared to a conventional switchgear.
  • Fig. 11 shows a representation of an embodiment ei ⁇ nes method of the invention for connecting a cable muffle arrangement, in particular to an electrical power ⁇ supply, and in particular the medium voltage level on egg ⁇ nem electrical load, wherein between two electrical see line sections of an electric line of a

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un ensemble manchon de câble (K), destiné notamment à l'alimentation en énergie électrique, notamment dans la plage moyenne tension. À l'intérieur du manchon de câble (501), entre deux segments conducteurs d'une ligne électrique (503) d'une phase d'un câble électrique, une unité d'interruption (507) commutable au moyen d'une unité de commande (505) est connectée électriquement en série et l'unité de commande (505) est connectée à une ligne de transmission de signaux (509) disposée dans le câble en vue d'une alimentation en énergie électrique.
PCT/EP2017/070706 2016-09-23 2017-08-16 Ensemble manchon de câble interruptible WO2018054615A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016218355.9 2016-09-23
DE102016218355.9A DE102016218355A1 (de) 2016-09-23 2016-09-23 Unterbrechbare Kabelmuffenanordnung

Publications (1)

Publication Number Publication Date
WO2018054615A1 true WO2018054615A1 (fr) 2018-03-29

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ID=59702696

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PCT/EP2017/070706 WO2018054615A1 (fr) 2016-09-23 2017-08-16 Ensemble manchon de câble interruptible

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DE (1) DE102016218355A1 (fr)
WO (1) WO2018054615A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020025410A1 (fr) * 2018-08-02 2020-02-06 Siemens Aktiengesellschaft Système de contact de fermeture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018215507A1 (de) 2018-09-12 2020-03-12 Siemens Aktiengesellschaft Leistungsschalter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240106A1 (de) * 1971-08-23 1973-03-01 Gen Electric Hochleistungsdurchfuehrung mit eingekapseltem vakuumschalter
DE7328070U (de) * 1973-08-01 1973-11-22 Felten & Guilleaume Kabelwerke Ag Starkstromkabel mit Steuerleitungen zum Überwachen und Schalten von Starkstromnetzen
DE2636410A1 (de) * 1976-08-11 1978-02-16 Siemens Ag Schalteinrichtung fuer mittelspannungskabelnetze
EP1107409A1 (fr) * 1999-12-01 2001-06-13 Kabushiki Kaisha Toshiba Interrupteur et son procédé de fabrication
EP2461339B1 (fr) 2010-12-03 2015-10-28 ABB Technology AG Pôle de disjoncteur
DE102015200135A1 (de) 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät,insbesondere eine Vakuumschaltröhre
DE102015212826A1 (de) 2015-07-09 2017-01-12 Siemens Aktiengesellschaft Gekapselte elektrische Durchführung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8901138A (nl) 1989-05-03 1990-12-03 Nkf Kabel Bv Insteekverbinding voor hoogspanningskunststofkabels.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240106A1 (de) * 1971-08-23 1973-03-01 Gen Electric Hochleistungsdurchfuehrung mit eingekapseltem vakuumschalter
DE7328070U (de) * 1973-08-01 1973-11-22 Felten & Guilleaume Kabelwerke Ag Starkstromkabel mit Steuerleitungen zum Überwachen und Schalten von Starkstromnetzen
DE2636410A1 (de) * 1976-08-11 1978-02-16 Siemens Ag Schalteinrichtung fuer mittelspannungskabelnetze
EP1107409A1 (fr) * 1999-12-01 2001-06-13 Kabushiki Kaisha Toshiba Interrupteur et son procédé de fabrication
EP2461339B1 (fr) 2010-12-03 2015-10-28 ABB Technology AG Pôle de disjoncteur
DE102015200135A1 (de) 2015-01-08 2016-07-14 Siemens Aktiengesellschaft Kopplungsglied für ein elektrisches Schaltgerät,insbesondere eine Vakuumschaltröhre
DE102015212826A1 (de) 2015-07-09 2017-01-12 Siemens Aktiengesellschaft Gekapselte elektrische Durchführung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020025410A1 (fr) * 2018-08-02 2020-02-06 Siemens Aktiengesellschaft Système de contact de fermeture
CN112534534A (zh) * 2018-08-02 2021-03-19 西门子能源全球有限公司 闭合触头系统
US11462375B2 (en) 2018-08-02 2022-10-04 Siemens Energy Global GmbH & Co. KG Make contact system
CN112534534B (zh) * 2018-08-02 2024-04-05 西门子能源全球有限公司 闭合触头系统

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