EP1906422B1 - Trennschalter für eine Hochspannungsanlage - Google Patents

Trennschalter für eine Hochspannungsanlage Download PDF

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Publication number
EP1906422B1
EP1906422B1 EP06425665A EP06425665A EP1906422B1 EP 1906422 B1 EP1906422 B1 EP 1906422B1 EP 06425665 A EP06425665 A EP 06425665A EP 06425665 A EP06425665 A EP 06425665A EP 1906422 B1 EP1906422 B1 EP 1906422B1
Authority
EP
European Patent Office
Prior art keywords
disconnector
arm
arms
articulated
moving parts
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.)
Active
Application number
EP06425665A
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English (en)
French (fr)
Other versions
EP1906422A1 (de
Inventor
Ferruccio Dianin
Stefano Dessanti
Sergio Serafin
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.)
Grid Solutions SpA
Original Assignee
Areva T&D SpA
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 Areva T&D SpA filed Critical Areva T&D SpA
Priority to EP06425665A priority Critical patent/EP1906422B1/de
Priority to AT06425665T priority patent/ATE511198T1/de
Priority to CN2007101543946A priority patent/CN101246793B/zh
Priority to US11/904,996 priority patent/US7804033B2/en
Publication of EP1906422A1 publication Critical patent/EP1906422A1/de
Application granted granted Critical
Publication of EP1906422B1 publication Critical patent/EP1906422B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact

Definitions

  • the present invention relates to a very high voltage electrical substation disconnector greater than 1100kV AC and an electrical substation comprising such a disconnector.
  • a very high voltage substation comprises in particular a circuit breaker and a disconnector, the circuit breaker being interposed between two very high voltage alternating current busbars, and the disconnector being interposed between the circuit breaker and at least one conducting bar.
  • the disconnector in a substation has a safety function, it is open after the circuit breaker has been opened, making any intervention on the substation safe.
  • the very high voltage is less than 800kV
  • the opening distance of the disconnector required is then of the order of 5m to 6m to avoid the formation of an electric arc.
  • This type of 800kV substation switch is generally of the vertical displacement type as described in the document CH334101 .
  • the disconnector is of the pantograph type formed by two elongated and articulated parallelograms which, to open the disconnector, fold back.
  • the movable elements of the disconnector would have dimensions and masses such that it would not be possible to make an opening by vertical movement over a distance of 12 m, the disconnector in the closed position could flare up. To avoid this, it would then stiffen the pantograph, which would increase the mass and size of the moving elements, and space congestion of the disconnector.
  • the insulating supports are made of ceramic or composite material whose mechanical characteristics are unable to support such masses.
  • the voltage distribution performances are lower than those of the disconnectors of the state of the art. Indeed, the distribution of the voltages is also due to the capacitive coupling which depends on the partial capacitance in the direction of the central electrode.
  • a switch for a very high voltage substation comprising two articulated members, each integral with an insulating support, intended to come into contact with each other to close the disconnector, the members being such that in the closed position, the two arms forming each of the members, form a non-flat angle between them.
  • the disconnector comprises two half pantographs intended to come into contact with each other, the two half pantographs being in support against each other, when closing the disconnector, the deployment of half pantographs is not complete, so that the segments of pantograph half mounted pivoting on the insulating supports stiffen the disconnector.
  • the buckling is then avoided and the weather resistance is increased.
  • the subject of the present invention is therefore a disconnector for a high-voltage electrical station greater than 1100kV of the horizontal displacement type comprising a first moving-mounted element on a first insulating support and a second moving-mounted element on a second insulating support, said first and second mobile crews having at least a first and a second arm articulated relative to each other, the first arms being respectively mounted on the insulating support by a first longitudinal end, the second arms being intended to come into contact with the one with the other by a second longitudinal end, in which, in the closed position of the disconnector, the first and second arms of each of the moving equipments form between them a non-flat angle so as to form an elbow, the two second arms being aligned in substantially horizontal position.
  • the first arms are advantageously inclined towards each other upwards, so as to be subjected to a compressive force.
  • each of the crews In the folded position, each of the crews is in the folded position, the first and second arms can be substantially parallel in vertical position, to obtain the opening distance of the required disconnector with a small footprint.
  • the angle ( ⁇ ) may be between 135 ° and 150 °.
  • the opening distance between the free ends of the articulated members intended to come into contact may be between 10 m and 12 m.
  • the length of the first arm is between 3.5 m and 4 m and the length of the second arm is between 3.8 m and 4.2 m.
  • the two mobile teams are symmetrical with respect to a vertical plane, which simplifies the manufacture of the disconnector.
  • the present invention also relates to a very high voltage substation of the order of 1100 kV comprising at least one disconnector according to the present invention.
  • a disconnector according to the present invention can be seen in the closed position comprising a first 2 and a second 4 articulated member or movable member and insulating supports 8, 10, each of the articulated members 2, 4 being pivotally mounted respectively on a support insulation 8, 10.
  • the insulating supports are composed of two supports 8.1, 8.2, 10.1, 10.2 respectively.
  • the supports 8.1, 10.1 actually form a vertical support for the articulated members 2, 4 and the supports 8.2, 10.2 form in addition to a vertical support a control rod of the deployment of the articulated members 2, 4.
  • the insulating supports 8, 10 are themselves arranged on metal structures 11, 12 respectively, thus forming towers.
  • the pylons are separated by a distance D of approximately equal to 10 m to 12 m corresponding to the required opening distance for the very high voltage disconnector according to the present invention.
  • first articulated limb 2 the second limb 4 being identical to the first articulated limb 2.
  • the first articulated member 2 comprises, in the example shown a first arm 14 secured by a first longitudinal end 14.1 to the insulating support 8 by a pivot connection, and a second arm 16 secured by means of a pivot connection by a first longitudinal end 16.1 at a second longitudinal end 14.2 of the first arm 14.
  • the second articulated arm comprises a first arm 114 attached to the insulating support 10, and a second arm 116.
  • first arm 14 is rotatable about a fixed axis X1 orthogonal to the plane of the sheet and the second arm 16 is rotatable about an axis X2 orthogonal to the plane of the sheet and movable in the plane of the leaf.
  • the first 14 may measure between 3.5 m and 4 m in length
  • the second arm 16 may measure between 3.8 and 4.2 m in length.
  • the first and second articulated members 2, 4 form semi-pantographs, the operation and use of which are well known in the art.
  • the skilled person in the electrical disconnectors. for example FR 1 204 754 describes an example of a deployment mechanism of such a semi-pantograph.
  • FIG. 5 a detailed representation of a pylon according to the present invention can be seen, on which can be seen the control rod 8.2 integrated in the insulating support 8, which is actuated from a mechanism housed in a housing 22 arranged in a part lower part of the pylon.
  • the control rod 8.2 actuates in turn via a cardan joint 26 a crank 28 integral with the universal joint 26.
  • a rod 30 movable in all planes by means of joints 32, 34.
  • the opening of the disconnector is carried out inversely to that of the closure, for example by rotating the control valve in the opposite direction of the clockwise,
  • the first 2 and second 4 articulated members are intended to connect electrically by their free ends by a connector 18.
  • the connector 18 may be identical to the connector described in the document FR 2 590 073 , it comprises a male contact carried by one of the articulated members 2, 4 and a female contact carried by the other articulated members 4, 2. This connector 18 is particularly suitable for conditions of large ice formation, the contacts male and female being protected.
  • the male and female contacts are automatically aligned, the male contact then enters the female contact.
  • the articulated members in the deployed position take the form of a bend, which increases the rigidity of the disconnector.
  • the second arm 16 forms an angle ⁇ with the first arm 14, unlike the disconnectors of the state of the art where the first and second arm are aligned.
  • the disconnector then has, in the closed position, the shape of an isosceles trapezium, in which the small base comprises the two second arms 16, 116 of the first and second articulated members 2, 4.
  • the two articulated members 2, 4 are supported against each other at the connector 18.
  • the angle ⁇ is between 135 ° and 150 °.
  • the angle ⁇ can not be too large, since, when the disconnector is in the closed position, it is preferable to provide a free horizontal race to take into account possible displacements of the pylons 8-11, 10-12. .
  • the force F which results from the weight of the disconnector is applied vertically downwards.
  • the force F divides into two forces F1 and F2 whose direction is that of the first arms 14, 114 of each of the articulated members, which are then respectively subjected to a compressive force towards the insulating supports 8 , 10, which confers a stable position of the disconnector.
  • FIG. 3 is schematically shown a disconnector in which the two articulated members 2 ', 4' are aligned in the closed position, in this case the force F is exerted only vertically downwards. No effort is taken up by the insulating supports.
  • This configuration is very sensitive to external elements, such as wind and ice. Moreover, the mechanical stability can not be assured.
  • each of the articulated members 2, 4 has at the connection a rigidity for precise guidance of each of the contacts, which guarantees a connection every time.
  • articulated members 2, 4 folded in the open position of the disconnector. These are respectively above the insulating supports in vertical position. This vertical configuration ensures the opening distance of 12 m with a reduced space requirement. Indeed, if the articulated members 2, 4 were inclined towards each other, it would take a distance between the pylons greater than 12 m, to obtain an opening distance of the effective disconnector of 12 m.
  • the second arm 16 pivots about the axis X2 and deviates from the second arm 14, simultaneously the first arm 14 pivots about the axis X1 and straighten up to be substantially perpendicular to the insulating support 8.
  • the first arm 2 rotates 45 ° about the axis X1 relative to a vertical plane
  • the second arm 16 rotates 90 ° around the axis X2 with respect to the vertical plane.
  • each insulating support 8, 10 pivots, causing the unfolding of their respective articulated limb 2, 4 according to the sequence shown in FIGS. Figures 4A to 4F .
  • the movement of the arms 104 is effected for example as described above.
  • Deployment is provided so that the male contact aligns with the female contact and enters it at the end of the deployment sequence, the two articulated members are then pressed against each other.
  • the opening of the disconnector is effected by folding articulated limbs according to the inverse sequence of closure shown on the Figures 4A to 4I .
  • the two articulated limbs are symmetrical, but asymmetrical limbs can be envisaged, in which the second arm of the first articulated limb is longer than that of the second articulated limb.
  • the disconnector according to the present invention therefore offers high stability in the closed position and precise guiding of the male and female contacts, especially over a distance greater than 10 m.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Manipulator (AREA)

Claims (8)

  1. Trennschalter für eine Hochspannungsanlage für Höchstspannungen von über 1100 kV, vom Typ mit horizontaler Verstellbarkeit, enthaltend ein erstes bewegtes Teil (2), das an einem ersten Stützisolator (8) verstellbar gelagert ist, und ein zweites bewegtes Teil (4), das an einem zweiten Stützisolator (10) verstellbar gelagert ist, wobei das erste und zweite bewegte Teil (2, 4) einen ersten (14, 114) und einen zweiten Gelenkarm (16, 116) aufweisen, die gelenkig zueinander angeordnet sind, wobei die ersten Gelenkarme (14, 114) jeweils mit einem ersten longitudinalen Ende am Stützisolator (8, 10) gelagert sind, wobei die zweiten Gelenkarme (16, 116) dazu bestimmt sind, über ein zweites longitudinales Ende miteinander in Kontakt zu treten, wobei in Schließstellung des Trennschalters die ersten (14, 114) und zweiten Gelenkarme (16, 116) jedes der bewegten Teile (2, 4) einen nicht flachen Winkel (α) miteinander einschließen, so dass sie eine Krümmung bilden, wobei die beiden zweiten Gelenkarme (16, 116) in im wesentlichen horizontaler Stellung miteinander fluchten.
  2. Trennschalter nach Anspruch 1, wobei in Schließstellung die ersten Gelenkarme (14, 114) nach oben geneigt aufeinander zu verlaufen, so dass sie einer Druckkraft ausgesetzt werden.
  3. Trennschalter nach Anspruch 1 oder 2, wobei in umgeklappter Stellung sich jedes der bewegten Teile (2, 4) in umgeklappter Stellung befindet, wobei der erste (14) und der zweite Gelenkarm (16) in vertikaler Stellung im wesentlichen parallel zueinander verlaufen.
  4. Trennschalter nach einem der Ansprüche 1 bis 3, wobei der Winkel (α) zwischen 135° und 150° beträgt.
  5. Trennschalter nach einem der Ansprüche 1 bis 4, wobei der Öffnungsabstand zwischen den freien Enden der bewegten Teile (2, 4), die miteinander in Kontakt treten sollen, zwischen 10m und 12 m beträgt.
  6. Trennschalter nach einem der Ansprüche 1 bis 5, wobei die Länge des ersten Gelenkarms zwischen 3,5 m und 4 m beträgt und die Länge des zweiten Gelenkarms zwischen 3,8 m und 4,2 beträgt.
  7. Trennschalter nach dem vorhergehenden Anspruch, wobei zwei bewegte Teile bezüglich einer senkrechten Ebene symmetrisch sind.
  8. Hochspannungsanlage für Höchstspannung im Bereich von 1100 kV mit zumindest einem Trennschalter nach einem der vorangehenden Ansprüche.
EP06425665A 2006-09-28 2006-09-28 Trennschalter für eine Hochspannungsanlage Active EP1906422B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06425665A EP1906422B1 (de) 2006-09-28 2006-09-28 Trennschalter für eine Hochspannungsanlage
AT06425665T ATE511198T1 (de) 2006-09-28 2006-09-28 Trennschalter für eine hochspannungsanlage
CN2007101543946A CN101246793B (zh) 2006-09-28 2007-09-26 用于在超过1100kv变电站的移位型断路器及变电站
US11/904,996 US7804033B2 (en) 2006-09-28 2007-09-28 Disconnector for an electrical substation handling voltages in excess of 1100kV

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425665A EP1906422B1 (de) 2006-09-28 2006-09-28 Trennschalter für eine Hochspannungsanlage

Publications (2)

Publication Number Publication Date
EP1906422A1 EP1906422A1 (de) 2008-04-02
EP1906422B1 true EP1906422B1 (de) 2011-05-25

Family

ID=37684105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06425665A Active EP1906422B1 (de) 2006-09-28 2006-09-28 Trennschalter für eine Hochspannungsanlage

Country Status (4)

Country Link
US (1) US7804033B2 (de)
EP (1) EP1906422B1 (de)
CN (1) CN101246793B (de)
AT (1) ATE511198T1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUA20162294A1 (it) * 2016-04-05 2017-10-05 General Electric Technology Gmbh Struttura di supporto per contatti di sezionatori per alte tensioni
CN109074972B (zh) * 2016-04-20 2019-12-27 通用电器技术有限公司 Hvdc隔离开关
WO2019186308A1 (en) * 2018-03-28 2019-10-03 Abb Schweiz Ag Spring loaded auxiliary contact system for bus transfer switching in a center break switch
CN109243906B (zh) * 2018-09-29 2024-02-02 长高电新科技股份公司 一种直角双断口、共静触头的特高压组合式直流隔离开关
CN109904019A (zh) * 2019-04-02 2019-06-18 国网安徽省电力有限公司检修分公司 一种高压隔离开关防自动合闸装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1784735A (en) 1925-07-17 1930-12-09 Memco Engineering & Mfg Compan Electric switch
BE551222A (de) 1955-09-23
US3009995A (en) * 1958-08-12 1961-11-21 Eastern Power Devices Ltd Single insulator vertical reach switch
US3293387A (en) * 1965-04-02 1966-12-20 Ite Circuit Breaker Ltd Center break thrust type switch
IT1187432B (it) 1985-10-03 1987-12-23 Ceme Spa Coppia di contatti elettrici particolarmente adatta a costituire il punto di continuita' o di isolamento fra due parti metalliche conduttrici di sezionatori elettrici per media alta e altissima tensione di cui uno dei contatti e' racchiuso in un involucro completamente stagno e uno e' protetto dalla polluzione ambientale
DE9010170U1 (de) * 1990-07-04 1990-09-06 Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen Hochspannungs-Trennschalter
CN2593421Y (zh) * 2003-01-06 2003-12-17 山东泰开电气有限公司 户外高压空气绝缘组合电器

Also Published As

Publication number Publication date
US20080093204A1 (en) 2008-04-24
EP1906422A1 (de) 2008-04-02
ATE511198T1 (de) 2011-06-15
CN101246793A (zh) 2008-08-20
CN101246793B (zh) 2012-08-29
US7804033B2 (en) 2010-09-28

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