EP3559966A1 - Dispositif de commutation électrique - Google Patents

Dispositif de commutation électrique

Info

Publication number
EP3559966A1
EP3559966A1 EP18704417.7A EP18704417A EP3559966A1 EP 3559966 A1 EP3559966 A1 EP 3559966A1 EP 18704417 A EP18704417 A EP 18704417A EP 3559966 A1 EP3559966 A1 EP 3559966A1
Authority
EP
European Patent Office
Prior art keywords
switching
electrical
resistance
encapsulating
switching device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18704417.7A
Other languages
German (de)
English (en)
Other versions
EP3559966C0 (fr
EP3559966B1 (fr
Inventor
Thomas Chyla
Stefan Giere
Volker Lehmann
Jens Schimmelpfennig
Jörg Teichmann
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Publication of EP3559966A1 publication Critical patent/EP3559966A1/fr
Application granted granted Critical
Publication of EP3559966C0 publication Critical patent/EP3559966C0/fr
Publication of EP3559966B1 publication Critical patent/EP3559966B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/165—Details concerning the impedances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts

Definitions

  • the invention relates to an electrical switching device for ⁇ at least one switching point and at least one Wegwider ⁇ stood having, which is electrically connected in parallel to the Wegstel ⁇ le.
  • Such an electrical switching device is ⁇ example, from the published patent application DE 10 2006 004 811 AI be ⁇ known.
  • a switching resistor is electrically connected in parallel to a switching point.
  • Electrical switching devices are preferably manufactured in a modular design, so that assemblies can be used several times in different series. Furthermore, electrical components can be adapted to changing requirements in a simplified manner by means of modular assemblies. Therefore, it is an object of the invention to develop a switching device such that it can be variably splitstat ⁇ Tet.
  • the object is an electrical
  • the switching resistor has a stack of everybodyselemen ⁇ th.
  • An electrical switching device is a device which serves to interrupt or to produce a current path.
  • the electrical switching device can interrupt an electrical current or switch on an electrical current by interrupting or producing a current path.
  • the amount of the electrical current to be controlled can vary. For example, an electrical
  • Switching device can be designed as a load switching device that, ie the electrical switching device controls Strö ⁇ me that correspond to their maximum size. However, it can also be provided that the electrical switching device is designed as a so-called disconnecting switching device, that is, except for negligible charging and discharging ⁇ currents, the electrical switching device is rich tet switched to dominate no electric current.
  • An electrical switching device can also be designed as so-called power ⁇ switching device, that the electric switching means is also a mastering of streams which are above their rated current. Thus, it is possible to play at ⁇ that a power switching device controlled short currents which are a multiple of the rated current ⁇ . Electrical switching devices can be used depending on their design at different locations of electric power transmission networks.
  • a switching point of the switching device is a mechanical switching point. At a mechanical switching point, an impedance of the switching point is changed by relatively movable switching ⁇ contact pieces.
  • Al ternatively ⁇ a switching point may be formed on the semiconductor base, however, for example, the impedance of the switching point may vary due to a harshest operating circuitry.
  • a switching resistor is arranged parallel to the switching point.
  • a switching resistor supports the function of the switching point. For example, in an interrup ⁇ chen a phase conductor of the train and an optionally associated interrupting an electric current reactions take place in the switching point. For example, oscillations or oscillations of energy flows can occur in electric power transmission networks, resulting in a
  • Voltage overshoot lead over the switching point By means of a switching resistor so-called recurrence voltages can are limited, whereby a safe and fast manufacture ⁇ len a high-impedance state of the switching point is supported ⁇ .
  • oscillatory processes can occur in AC voltage networks, which lead to voltage overshoots over a switching point, which are greater than the rated voltage for which the electrical switching point is designed.
  • the electrical switching device is used in a DC voltage system, there to interrupt a Phasenlei- terzuges a swinging of the DC, for example, by a current zero crossing through an external wiring, can be forced to a simplified interruption of a Phasenleiterzuges and therefore, if necessary to force a interrup ⁇ chen the direct current.
  • the switching resistor may advantageously be provided that this is composed of a plurality of resistive elements, so that in sum of the combined resistance elements of the desired resistance of the switching resistance is achieved.
  • the resistance ⁇ elements can be interconnected adds ⁇ example in the manner of a stack.
  • the resistance elements can ⁇ example, have each a cylindrical shape, in particular with a circular cylindrical or hollow cylindrical cross section.
  • the end faces of a plurality of resistance elements can be arranged lying against each other and form a stack.
  • an arrangement of contact-making between the resistance elements may be provided.
  • the stack of resistance elements can be joined together to form a rigid-angle composite.
  • the resistance elements can be pressed against each other by applying an external force.
  • the stack of elements Kunststoffsele ⁇ be surrounded by a sheath, which serves for axial guidance of the stack of resistance elements.
  • the enclosure should act electrically insulating.
  • the stack of resistive elements can be positioned within a tube of electrically insulating material, wherein the tube can serve to apply contact forces of the resistance stack.
  • the electrically insulating tube it is possible for the electrically insulating tube to receive the stack of resistance elements and to arrange contact points for electrical parallel connection of the switching resistance to a switching point at the end of the insulating tube.
  • the Kunststoff ists ⁇ dots can also serve a holding and positioning of the switching resistor.
  • the number of resistance elements which form a stack is available for electrical ⁇ rule resistance of the stack of resistive elements in ohms in a ratio of less than or equal to 2, in particular less than or equal to 1.5.
  • a ratio of the number of resistive elements of the stack to the electrical resistance of less than or equal to 2, in particular less than or equal to 1.5 a favorable release of heat from the stack of resistive elements is made possible.
  • the length of the stack of resistance elements is limited such that an electrical parallel switching to the switching point is made possible in a simplified manner.
  • the number of resistor elements to the electrical resistance of the stack to the interpretation of the individual opponent ⁇ stand element is defined with respect to the part of resistance, which contributes to the total resistance, the resistance element of the stack. Further, the mass of the stack of cons ⁇ stand elements is limited. As has been found particularly advantageous if the ratio of the number of reflection ⁇ stand elements to the electrical resistance of the stack in ohms at the limits of about 0.5 ... 0.7 to about 1.0 ... 2 moves.
  • dimensioning the resistance elements for example, using sintering process ren, in particular of ceramics or the like, are manufactured inexpensively.
  • a further advantageous embodiment may provide that the length of the switching resistance in mm to the electrical resistance of the switching resistor in ohms has a ratio of less than or equal to 8, in particular less than or equal to 6.
  • the electrical switching device has a multi-interrupting switching path having a first switching point and a second switching point, which are electrically contacted with each other, wherein between terminals of the multi-interrupting switching path is a distance in mm, which is a maximum of 30 times , In particular, at most 25 times the amount of the switching resistance in ohms.
  • an electrical switching device serves to switch a current path or to switch an electric current. If one uses now several switching points, which together a switching of a current path serve the / electrical current, an electrical switching device is formed with multiple interrupting switching path.
  • the switching points are preferably electrically interconnected in series, so that the switching path at the end points of the interconnected switching points have connection points of the electrical switching device, between which a switching of a phase conductor train (current paths) or an electric current is made.
  • To connect the first and the second switching point with each other serve a contact element, which spaced the two switching points from each other.
  • This contact element is preferably designed to be electrically conductive, so that an electrically conductive connection of the first and second switching point via the contact element takes place.
  • a contact element for example, transmission elements, such. B. a gear head, serve, which serves to couple a movement to the first or the second switching point.
  • the switching points can carry on from the contacting element.
  • the switching points can be arranged on opposite sides of the contacting element.
  • the switching points with opposite direction sense to each other substantially flush from the contacting element.
  • Arthur- on the side remote from the ends of the element PLEASE CONTACT ⁇ approximately two switching points NEN the connection points of the multi-disruptive switching path lie.
  • it is for example possible to form an outdoor switching device in live tank design which may have, for example, a plurality of encapsulating housing in T-shape forerun by an electrically insulating support means.
  • a first switching resistor may be electrically connected in parallel.
  • a second switching resistor can be electrically connected in parallel. It can be provided that both the first and the second switching point is assigned in each case a switching ⁇ resistance. However, it can also be provided be that only the first switching point or only the second switching point is assigned a switching resistor electrically pa ⁇ rallel switched.
  • an electrically pa ⁇ rallele switching circuit of resistors the operational mode is le to which the Wennwiderstnd is electrically parallel ge ⁇ switches bridged by the circuit resistance. With ande ren ⁇ words, in addition to the impedance variable switching a parallel current path through the switch resistance will be ⁇ builds.
  • a temporary separation of the parallel current path produced via the respective switching resistor is additionally to be provided.
  • Such ⁇ on separate parallel flow path can preferably be effected by one he followed ⁇ Interrupting a phase conductor and the train after successful ⁇ rich solidifying the switching point.
  • a hardening of the switching point is necessary, for example, in the field of
  • the switching resistors are electrically connected in parallel to the first or the second switching point.
  • Kings ⁇ nen the fixtures serve as support elements for supporting or carrying of switching resistors. This can be advantageous in particular if the switching resistors are arranged outside the encapsulating housing.
  • a switching resistor can also be arranged within an encapsulating housing.
  • a further advantageous embodiment can provide that the first or the second switching point is surrounded by an encapsulating housing, wherein a switching resistor is arranged outside of the encapsulating housing.
  • An environment of a switching point with an encapsulating housing has the advantage that the switching point can be protected from external influences.
  • An encapsulating housing can be designed, for example, in the form of an electrically insulating tubular body, in the recess of which a switching point is arranged. End of the tubular body may be provided with fittings to an electrical contact of the switching point to he ⁇ possible located in the in- side of the encapsulating housing.
  • a switching resistance au ⁇ ßer Halb of such encapsulating the Kapse ⁇ lung housing can be designed with its cross section to the dimension of each ⁇ vantage switching point. If necessary, then a switching resistance can be arranged outside of the encapsulating.
  • a modular structure of an electrical switching device is further supported, in which the Switching resistor is arranged outside only on Kapse ⁇ ment housing when needed, the encapsulating itself can be opti ⁇ optimized in its dimensions to the switching point.
  • a further advantageous embodiment may provide that the first and the second switching point are each surrounded by a cape ⁇ selungsgephaseuse, wherein a switching resistance au ⁇ ßerquaint an encapsulating housing is disposed.
  • both the first switching point and the second switching point with an encapsulating With an equipment both the first switching point and the second switching point with an encapsulating the possibility is given to install each of the switching points in a protected space, both switching points and only one switching point a switching resistance zugeord ⁇ net can be.
  • An arrangement of the switching resistor except ⁇ half of the encapsulating allows a substantially parallel alignment of encapsulating and Wegwider ⁇ stand each other.
  • the on-resistance can end on the encapsulating housing located electrically conductive members (fittings), each contacting the first and the second switching point, undergo a parallel electrical circuit ⁇ .
  • the switching resistance can be supported on the respective encapsulating housing.
  • a further advantageous embodiment can provide that the first or the second switching point is surrounded by an encapsulating ⁇ housing, wherein a switching resistor is disposed within ei ⁇ nes encapsulating.
  • An arrangement within the encapsulating housing, which surrounds the first or the second switching point, has the advantage that the switching resistance can benefit from the mechanical protective effect of the encapsulating housing and does not itself require a separate cladding. As a result, electrical contacting of the switching resistor with the respective switching point is made possible in a simplified manner.
  • a further advantageous embodiment may provide that the first and the second switching point are each surrounded by a cape ⁇ selungsgephase, wherein a switching resistance of a domestic ner Halb encapsulating housing is disposed.
  • Switching points each having a switching resistance Ichth, wherein the circuit resistance in the respective encapsulation ⁇ housing of the respective switching takes place assembly. Again, a protective effect of the respective encapsulating is expandable to the switching resistance.
  • An advantageous embodiment may provide that an encapsulating housing is a pressure vessel.
  • an encapsulating housing is filled with an electrically insulating fluid.
  • An embodiment of an encapsulating housing as a pressure container makes it possible to fill the interior of the encapsulating housing with an electrically insulating fluid and to pressurize this electrically insulating fluid, so that the
  • the pressure vessel is designed such that it can withstand a Diffe ⁇ rence pressure. This makes it possible to enclose a suitable fluid within the capsule housing.
  • Example ⁇ as can be filled with the encapsulating an electrically isolie ⁇ Governing oil or an electrically insulating gas.
  • gases or fluids have proven flues ⁇ with fluorine components, on the one hand an the other hand also have good arc extinguishing effect high electrical insulating effect.
  • sulfur hexafluoride, fluoroketones, fluoronitriles to be used.
  • other electrically insulating fluids such as nitrogen, oxygen, etc.
  • Figure shows a side view of an electrical switching device.
  • the electrical switching device is as a free air circuit breaker in live tank design in the high voltage range, in particular for voltages above
  • the electrical switching device has a support frame 1, which is generally formed of electrically conductive material and which leads Erd ⁇ potential.
  • a Antriebseinrich ⁇ device 2 is positioned on the support frame 1 .
  • the drive device 2 is also generally located at ground potential. By means of the drive device 2 is an actuation of the electrical switching device, ie a separation or producing a current path allows.
  • the drive device 2 provides the necessary energy, in this case the necessary kinetic energy.
  • an electrically isolie ⁇ render section of a support column 3 is arranged on the support frame 1 arranged.
  • the support column 3 is present composed of a first and a second driven elekt ⁇ insulating portion, wherein the electrically insulating portions are substantially tubular and the ends closed with valves.
  • the electrically insulating Ab ⁇ sections of the support column 3 are hollow and externally provided on the outside side with a ribbing. Through the ribbing is given an improved outdoor strength by
  • a gear head 4 is arranged at the end facing away from the support frame 1 end of the support column 3.
  • the gear head 4 terminates the support column 3 and is rigidly connected to the support column 3 ver ⁇ connected.
  • a first switching point 5 and a second switching point 6 are mounted on the gear head 4.
  • the first and the second switching point are for this purpose surrounded by a first encapsulating housing 7 and a second encapsulating housing 8.
  • the two encapsulating housings 7, 8 are designed to be similar to an electrically insulating section of the support column 3.
  • the two encapsulating housings 7, 8 are essentially hollow-cylindrical, electrically insulating in the form of tubes, with a fitting for terminating the encapsulating housings 7, 8 being arranged at each end of the encapsulating housings 7, 8.
  • the gear head 4 With respect to the gear head 4, the two Kapse ⁇ ment housing 7, 8 are arranged on opposite sides of the transmission head 4 and protrude with opposite sense of direction of the gear head 4.
  • the gear head 4 facing ends of the two encapsulating 7, 8 are mechanically connected via the local fittings of the encapsulating 7, 8 with the Ge ⁇ drive head 4, so that the Kapselungsge- housing 7, 8 beau ⁇ on the gear head 4 on the support column are supported.
  • the housing of the gear head 4 is formed from a conductive material, wherein an electrical contact of the fittings, which are connected to the gear head 4, is given via the gear head 4.
  • the first and the second switching point 5, 6 are arranged.
  • the first and the second switching point 5, 6 each have relatively movable switching contact pieces.
  • the relatively movable switch contact pieces are designed such that they can contact one another or can be separated from one another.
  • a kinematic chain for example arranged in the form of an axially displaceable shift rod, which acts before ⁇ given electrically insulating.
  • the gear head 4 a defense ⁇ development of the movement can in the two encapsulating 7, 8 carried into it, so that a relative movement of the Wegjorstü- blocks of the first and the second switching point 5, 6 can be made.
  • the switching points 5, 6 are attached in such a ⁇ arranged that the switching points with the armature of the respective encapsulating housing 7, are electrically contacted by 8, which are hinged to the gear head. 4
  • connection points 9, 10 for the multiple (twice) interrupting switching path of the electrical switching device. Between the connection points 9, 10 thus extending a distance D which the length of the electrically insulating portions of the encapsulating housing 7, 8 as well as of the electrically conductive contact-making, which at ⁇ the switching points 5, 6 serves includes a contacting of the.
  • Both the first switching point 5 and the second switching point 6 each have a switching resistance IIa, IIb zugeord ⁇ net.
  • the two switching resistors IIa, IIb are in each case electrically connected in parallel to the first switching point 5 or to the second switching point 6.
  • the Wegwider ⁇ states IIa, IIb each with the fittings, which the Kapse ⁇ ment housing 7, 8 of the respective switching point 5, 6 end limit, electrically connected.
  • a mechanical holding or wearing the switching resistors IIa, IIb on the fittings and on the encapsulating housing 7, 8 gege ⁇ ben.
  • the switching resistors IIa, IIb are each constructed identically.
  • the switching resistors IIa, IIb each have ei ⁇ nen stack of n-resistive elements .
  • the resistance ⁇ elements are each arranged in a tubular electrically insulating cylinder, which on the one hand forms a mechanical protection for the respective stack of resistive elements.
  • the cylinder also serves to apply a force to the resistance elements located in the interior of the switching resistor.
  • the number of switching resistors can vary depending on the dimension of the respective encapsulating housings 7, 8 or of the gear head 4. Thus, a stack of resistive elements has n resistive elements.
  • the encapsulating housings 7, 8, the support column 3 and the gearbox ⁇ head 4 are each designed as a pressure vessel, so that the interior of the encapsulating 7, 8, the support column 3 and the gear head 4 can be filled with an electrically insulating fluid, which is encapsulated , In this case, especially electrically insulating fluids are advantageous, which the
  • Insulation resistance in the interior of the support column 3 or in the interior of the encapsulating housing 7, 8 convey.
  • the electrically insulating fluid inside the encapsulating housing 7 can be set to 8 under positive pressure so that a differential pressure on the encapsulating housing 7, 8 and also on the support column 3 and can ⁇ attributable to the gear head. 4
  • the capsule housing are 7, 8 as a pressure vessel precisely terminate ⁇ ren.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Thermistors And Varistors (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Adjustable Resistors (AREA)

Abstract

L'invention concerne un dispositif de commutation électrique comprenant au moins un point de commutation (5, 6). Une résistance de commutation (11a, 11b) est associée à ce point de commutation (5, 6), laquelle est montée électriquement en parallèle avec ledit point de commutation (5, 6). La résistance de commutation (11a, 11b) est constituée d'un empilement d'éléments résistifs.
EP18704417.7A 2017-02-21 2018-01-22 Dispositif de commutation électrique Active EP3559966B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017202739.8A DE102017202739A1 (de) 2017-02-21 2017-02-21 Elektrische Schalteinrichtung
PCT/EP2018/051377 WO2018153582A1 (fr) 2017-02-21 2018-01-22 Dispositif de commutation électrique

Publications (3)

Publication Number Publication Date
EP3559966A1 true EP3559966A1 (fr) 2019-10-30
EP3559966C0 EP3559966C0 (fr) 2024-11-27
EP3559966B1 EP3559966B1 (fr) 2024-11-27

Family

ID=61192855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18704417.7A Active EP3559966B1 (fr) 2017-02-21 2018-01-22 Dispositif de commutation électrique

Country Status (5)

Country Link
EP (1) EP3559966B1 (fr)
CN (1) CN110313046B (fr)
BR (1) BR112019015398B1 (fr)
DE (1) DE102017202739A1 (fr)
WO (1) WO2018153582A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE357094B (fr) * 1971-09-27 1973-06-12 Asea Ab
DE3103373A1 (de) * 1981-01-27 1982-08-26 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschalter
CH669863A5 (en) * 1986-05-20 1989-04-14 Sprecher Energie Ag High voltage with right angle drive - has resistive arms, each with springs inwardly compressing ends of stacked resistive discs
US5245145A (en) 1991-07-23 1993-09-14 Abb Power T&D Company Inc. Modular closing resistor
JP2679499B2 (ja) * 1991-12-27 1997-11-19 三菱電機株式会社 遮断器及び開閉部の操作機構
US5401923A (en) * 1992-07-17 1995-03-28 Kabushiki Kaisha Toshiba Resistor-provided UHV breaker
JPH07320611A (ja) * 1994-05-23 1995-12-08 Hitachi Ltd ガス絶縁開閉装置
US5629666A (en) * 1994-05-23 1997-05-13 Kabushiki Kaisha Toshiba Power resistor, method of manufacturing the same, and power circuit breaker
DE102006004811A1 (de) 2006-01-26 2007-08-09 Siemens Ag Elektrisches Schaltgerät mit Potentialsteuerung
DE102006050732A1 (de) * 2006-10-20 2008-04-24 Siemens Ag Elektrische Schaltgeräteanordnung mit einer Schaltstelle
DE212014000279U1 (de) * 2014-11-04 2017-05-12 Siemens Aktiengesellschaft lmpedanzanordnung

Also Published As

Publication number Publication date
DE102017202739A1 (de) 2018-08-23
CN110313046B (zh) 2021-07-23
BR112019015398A2 (pt) 2020-03-31
BR112019015398B1 (pt) 2024-01-16
CN110313046A (zh) 2019-10-08
EP3559966C0 (fr) 2024-11-27
WO2018153582A1 (fr) 2018-08-30
EP3559966B1 (fr) 2024-11-27

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