EP2178099B1 - Appareil de commutation electrique de haute ou moyenne tension de deux interrupteurs comprenant des moyens d'entrainement communs aux contacts mobiles des interrupteurs - Google Patents

Appareil de commutation electrique de haute ou moyenne tension de deux interrupteurs comprenant des moyens d'entrainement communs aux contacts mobiles des interrupteurs Download PDF

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Publication number
EP2178099B1
EP2178099B1 EP09172743A EP09172743A EP2178099B1 EP 2178099 B1 EP2178099 B1 EP 2178099B1 EP 09172743 A EP09172743 A EP 09172743A EP 09172743 A EP09172743 A EP 09172743A EP 2178099 B1 EP2178099 B1 EP 2178099B1
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EP
European Patent Office
Prior art keywords
contacts
control mechanism
cam
control shaft
movable
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
EP09172743A
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German (de)
English (en)
French (fr)
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EP2178099A1 (fr
Inventor
Lukas Treier
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.)
GE Grid Switzerland GmbH
Original Assignee
Areva T&D AG
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Publication of EP2178099A1 publication Critical patent/EP2178099A1/fr
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    • 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
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle

Definitions

  • the invention generally relates to the field of high or medium voltage electrical switching devices comprising at least two switches.
  • the invention particularly relates to devices of this type in which at least one of the switches is a bar switch and at least one of the switches is an earthing switch.
  • each switch comprises a pair of contacts consisting of a fixed contact and a movable contact in translation so as to separate each other during a switch .
  • the main application is the medium or high electrical voltage in which the bar disconnector and the earthing switch are arranged in insulating envelopes each filled with a dielectric gas under a controlled atmosphere, such as SF6.
  • interlocking devices the purpose of which is to ensure the safety of persons and equipment, have the function of allowing the position of the bar switch to be kept in the open position when the earthing switch is in the closed position. last not to take place in the presence of an electrical voltage on the main electrical circuit.
  • the document WO 0024099 discloses in its embodiment of Figure 8 (whose description is given on page 12 line 18 to page 13 line 18) a high voltage electrical switching apparatus with two bar disconnectors and an earthing switch and drive means common.
  • the switches 136, 137, 138 have their respective movable contacts 58, 65, 64 which each comprises a translational follower member 135 in contact with a peripheral surface of a common disc cam member 130 integral with a rotational control shaft 123.
  • the peripheral surface of the cam 130 is conductive in order to bring the current of a conductor 54 to each of the fixed contacts 55, 56, 57.
  • the disadvantages of the switching apparatus according to this document are numerous.
  • the movable contacts 58, 65, 64 are not guided in force in the two directions of translation (opening and closing direction).
  • the size required for such a switching apparatus is important.
  • a large torque is required due, on the one hand, to the small angular cam stroke 130 possible for the displacement of the movable contact 58, 65, 64 and, on the other hand, to the force of the return spring surrounding the movable contact and which acts in addition to the bearing force between the latter and the cam 130.
  • the document CH 696476 also discloses an electrical switchgear 1 comprising two switches 2, 3 in which the two movable contacts 4, 6 movable in translation are each articulated at a point 13, 14 forming a follower oscillating at a single groove 12 of the same disc cam 9 integral with a rotating control shaft 10.
  • the disadvantages of the switching apparatus according to this document are numerous. A high torque of rotation is required on the shaft 10 close to the closed positions, because of the axial force required for the large moving contact and the distance from the latter to the axis of rotation 10. The force of The drive is directly applied to the moving contact, which generates side forces on it.
  • the disk cam 9 must be designed rather wide, because it must be larger than the stroke of the movable contacts 4, 6.
  • the axis of rotation of the disk cam 9 is arranged at the intersection of the axes of moving contacts 4, 6.
  • the space required for a given apparatus is important since the disk cam protrudes outside the angular zone of smaller value delimited by the translation axes of the movable contacts 4, 6.
  • the document DE 196 02 912 discloses a control with a lever 17 with two arms 15, 19. One of the arms 15 is coupled to a single movable contact 12 while the other arm 19 is coupled to a control mechanism.
  • This control mechanism comprises a spring drive with a single coil spring 32 and a disk cam 22. The spring drive rotates the disk cam 22 in both directions.
  • the disk cam 22 is coupled to the other arm 19 of the lever 17.
  • An object of the invention is to overcome all or part of the disadvantages of the control mechanisms of currently known switching devices which comprise at least two switches, such as disconnectors, with drive means common to the movable contacts.
  • an object of the invention is to propose a control mechanism of an electrical switching apparatus of the type mentioned in the preamble with common drive means including the transmission of force between a rotating control shaft and each contact. mobile translation is optimized.
  • an object of the invention is to propose a control mechanism of an electrical switching apparatus of the type mentioned in the preamble with common drive means including the drive ratio (ratio between the translation travel of a moving contact and the angular travel of the rotary control shaft) is variable, with the lowest value close to the closed position of the disconnector concerned.
  • Another particular object of the invention is to propose a control mechanism of an electrical switching apparatus of the type mentioned in the preamble with common drive means such that the maximum torque exerted on the control shaft in rotation is low. and such that the axial forces in the axis of translation of the movable contacts are also small.
  • Another object of the invention is to provide a control mechanism of a switching device of the type mentioned in the preamble with common drive means whose size is reduced and whose assembly is easy.
  • the profile of the grooves is preferably such that the follower is in limit stop against the groove at or immediately after the neutral position in the closed position.
  • the cam grooves each have a circular profile portion whose center is the axis of rotation of the shaft and a profile portion with a variable distance relative to the axis of rotation of the shaft. shaft, one of the followers being housed in the variable distance profile portion of a groove while the other of the followers is housed in the circular portion the other groove to maintain the opening of one of the switches during the closing of the other switches and vice versa and to avoid any reaction force on the control shaft from a contact mobile in its closed position
  • the axis of rotation of the control shaft and the disk cam are preferably arranged in the smallest angular zone delimited by the translation axes of the contacts.
  • Each lever of a given pair having an end articulated at a fixed point and whose other end is connected to a moving contact is advantageously arranged between the control shaft and the other the axis of translation of the moving contact to which it is not connected.
  • a roller is rotatably mounted on the lug. This reduces the friction forces between the lug and the corresponding cam groove.
  • the circular parts of the grooves are concentric and located on the same angular portion of a disk cam.
  • a disk cam by switch the two disk cams being arranged parallel on the control shaft in rotation by a distance substantially equal to the sum of the thickness of two levers and a free space allowing their relative rotational movement without friction.
  • Such a mode requires an axial size, that is to say in the direction of the rotational control shaft, more important than the embodiment with a single disk cam.
  • This mode with two parallel disk cams advantageously reduces the diameter of each disk cam and give more freedom of arrangement of the grooves on the cams.
  • each fixed-end lever may comprise two identical parts arranged parallel to each other so that each disk cam moves between these two parts parallel to each other.
  • the invention also relates to a medium and high voltage substation under metal tank (GIS), comprising, at least for one phase, an electrical switching apparatus comprising an envelope in which are housed at least partially the movable contacts of two switches, such as a bar disconnector and an earthing switch, and a control mechanism as previously described.
  • GIS medium and high voltage substation under metal tank
  • the movable contacts are advantageously hollow tubular in order to improve the cooling of each device during a switch.
  • the station comprises, for each of the three phases, an electrical switching apparatus comprising a casing in which at least part of the mobile contacts of two switches, such as a bar disconnector and an earthing switch, are housed. control as described above with a control shaft made of a single piece which is connected to an actuator and which connects the three envelopes.
  • the station comprises, for each of the three phases, an electrical switching apparatus comprising a casing in which the movable contacts of two switches, such as a bar disconnector and an earthing switch and provided with a mechanism, are housed at least partially.
  • control unit as described above with a control shaft made of three distinct parts, a part being connected to an actuator and the other two parts each connect two adjacent disk cams.
  • the following figures show a switching device A according to the invention which makes it possible to perform the switching of a single pole. It goes without saying that the arrangement described hereinafter of a switching apparatus can be repeated for each pole in the case of a multipole combination.
  • FIG. 1 On the figure 1 is represented a part of a three-phase electrical switching station 1 comprising three identical envelopes 2A, 2B, 2C in each of which is housed a switching device according to the invention. These three identical phases are arranged in a common metallic tank not shown and fixed to an insulating plate 3 by the conductors 4 (FIG. figure 2 ). In addition, an insulating bar 5 fixed to the three identical envelopes 2A, 2B, 2C is provided as mechanical reinforcement.
  • the earthing switch 20 and the bar disconnector 21 of one of the phases 2A are arranged substantially in the same plane and forming an angle of 90 ° between them. It's obvious that the relative arrangement between earthing switch 20 and bar 21 may be different and such that the disconnectors form an angle between 70 and 180 °.
  • the movable contacts 200, 210 of a phase and the drive means 22 (otherwise called force transmission means) of the same phase are arranged in the same envelope 2A.
  • Each movable contact 200, 210 slides in an opening 200A, 210A provided for this purpose in the envelope 2A.
  • the fixed contacts 201 of earthing switches are each fixed inside the common metal tank not shown.
  • the fixed contacts 211 of the bar disconnectors are each attached to a driver not shown.
  • Such an arrangement of the movable contacts 200, 210 and drive means 22 allows the reaction forces to be supported by the same shell 2A, 2B, 2C, which minimizes the reaction forces from outside.
  • the envelope acts as a dielectric shrinkage of the live parts, which increases the dielectric strength and reduces the partial discharges.
  • the tank also acts as a conductive element for the transmission of the current of each conductor towards the moving contacts.
  • the envelope also contributes to heat dissipation by thermal conduction from the movable contacts 200, 210 to an area surrounding them.
  • the movable contacts 200, 210 shown are in the form of a cylinder of hollow revolution emerging on either side at their end. They are housed inside the corresponding envelope in their open position, which has the advantage of a good dielectric behavior. The movable contacts 200, 210 are brought back inside the envelope in their open position.
  • the fixed contacts or electrodes 201, 211 are in the form of a cylinder of hollow revolution but opening only on the opposite side of the corresponding movable contact 200, 210.
  • the proximity of or the closing position of a movable contact of a given switch, earthing switch or bar disconnector corresponds to an at least partial engagement of the movable contact 200, 210 in the fixed contact 201 , 211 corresponding.
  • Each electrical switching device (a phase) with its envelope 2A, 2B, 2C, its movable contacts 200, 210 and part of its common drive means 22 to the movable contacts (lever, link) can be pre-assembled, this which reduces manufacturing costs.
  • the common drive means 22 of the movable contacts 200, 210 allow the closing of the earthing switch 20 while maintaining the opening of the bar switch 21 and vice versa.
  • the fact that the movable contacts 200, 210 do not move in their open position makes it possible to save space for the envelope 2A, 2B or 2C.
  • the rotational control shaft 220 is arranged at a distance and orthogonally to the translation axes of the moving contacts 200, 210 in a angular sector located between these two axes, for example making 90 ° between them.
  • the shaft 220 is carried by each metal casing 2A, 2B, 2C at least at one end and is rotated by an actuator arranged outside the casings 2A, 2B and 2C.
  • the common drive means 22 comprise a control shaft 220 on which is fixed a single disk cam 221 comprising two grooves 221 R0 , 221 R1 .
  • the drive means further comprises two pairs of levers 2210, 2220 and 2211, 2221.
  • the levers 2210, 2220 and 2211, 2221 of the same pair are hinged together at a point of articulation 222.
  • Each of the two levers 2210, 2211 is further articulated at a hinge point 224 attached to the metal shell 2A.
  • Each of the levers 2220, 2221 is further articulated to each movable contact 200, 210 concerned at a point of articulation 223.
  • each lever 2210, 2211 attached to the metal shell 2A and one of cam grooves 221, respectively 221 R0 , 221 R1 is formed by means of a lug 2230, 2231 fixed on said lever.
  • a roller is rotatably mounted on each lug 2230, 2231.
  • the lug advantageously provided with its roller, 2230, 2231 therefore plays the follower role of the cam 221.
  • the geometric shape, the length and the arrangement of the two pairs of levers 2210, 2220 and 2211, 2221 inside the metal casing 2A as well as the profile of the grooves 221 R0 , 221 R1 of the cam 221 allow to have an additional drive ratio between the cam 221 and each associated movable contact 200, 210.
  • the drive torque to be applied to the drive shaft 220 to move the movable contacts 200, 210 is small.
  • the common drive mechanisms 22 also have the advantage of having a zero or virtually zero transmission ratio when the movable contact 200, 210 is fully engaged in the corresponding fixed contact 201, 211. This zero transmission ratio is obtained thanks to the stroke of the contact defined by the length and groove profile 221.
  • each movable contact 200, 210 is somehow self-locked in its closed position. No undesired reaction force which occurs, for example due to high current or vibration, can thus be transmitted to the control shaft 220 when one of the movable contacts 200, 210 is in its closed position ( Figures 3 and 4 ).
  • cam grooves 221 R0 , 221 R1 each have a circular profile portion C0, C1 whose center is the axis of rotation X of the shaft and a profile portion R0, R1, with a variable distance to the axis of rotation X.
  • the grooves At the end of the rectilinear profile R 0 , R 1 opposite curved profile parts C 0 , C 1 , the grooves have a portion of short length in which the distance to the axis rotation X is constant in order to have a zero transmission ratio in the closed position of the contacts.
  • One of the followers 2230 or 2231 is housed in the rectilinear portion R0 or R1 of one groove, while the other of the followers 2231 or 2230 is housed in the circular portion C1 or C0 of the other groove in order to maintain the opening of the earthing switch 20 during the closing of the bar switch 21 and vice versa.
  • the circular parts Co, C1 of the grooves are concentric and located on the same angular portion of disk cam 221.
  • FIG. 5 another embodiment is shown in which a disk cam 221 D , 221 E is provided by disconnector 20 or 21.
  • the two disk cams 221 D , 221 E are here arranged in parallel on the rotational control shaft. 220 a distance substantially equal to the thickness of two levers 2210i, 2211i increased by a free space allowing their rotational movement without friction between them.
  • each fixed end lever 2210, 2211 224 comprises two identical lever parts 2210i, 2210j or 2211i, 2211j arranged parallel to each other so that each disk cam 221 D , 221 E moves between these two parts lever parallel to each other.
  • This embodiment of the figure 5 has the essential advantage of allowing a reduction in the diameter of the disk cam and greater freedom in the arrangement of the grooves. However, it requires an axial size according to the control shaft 220 more important than the embodiment of the Figures 2 to 4 .
  • the grooves 221 R0 , 221 R1 are formed opening on either side of the disc (s) 221. They can be made by being blind, that is to say say by opening only one side of the disc (s) to disk.
  • the insulating gas can enter inside the casing through an opening in the bottom of the casing, then pass along the contacts and out through the inside of the tubular contacts from above ( chimney cooling effect).

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Relay Circuits (AREA)
  • Electronic Switches (AREA)
EP09172743A 2008-10-14 2009-10-12 Appareil de commutation electrique de haute ou moyenne tension de deux interrupteurs comprenant des moyens d'entrainement communs aux contacts mobiles des interrupteurs Active EP2178099B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0856946A FR2937176B1 (fr) 2008-10-14 2008-10-14 Appareil de commutation electrique de haute ou moyenne tension de deux interrupteurs comprenant des moyens d'entrainement communs aux contacts mobiles des interrupteurs.

Publications (2)

Publication Number Publication Date
EP2178099A1 EP2178099A1 (fr) 2010-04-21
EP2178099B1 true EP2178099B1 (fr) 2011-10-05

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EP09172743A Active EP2178099B1 (fr) 2008-10-14 2009-10-12 Appareil de commutation electrique de haute ou moyenne tension de deux interrupteurs comprenant des moyens d'entrainement communs aux contacts mobiles des interrupteurs

Country Status (5)

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US (1) US8173927B2 (zh)
EP (1) EP2178099B1 (zh)
CN (1) CN101728096B (zh)
AT (1) ATE527675T1 (zh)
FR (1) FR2937176B1 (zh)

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EP2302748B1 (en) * 2009-09-23 2012-05-16 ABB Technology Medium or high voltage switchgear apparatus and method of earthing
FR2953984B1 (fr) 2009-12-14 2012-02-10 Areva T & D Ag Appareillage electrique haute ou moyenne tension de type blinde comprenant un arbre d'entrainement en rotation et un contact mobile entraine par ledit arbre avec montage ameliore, application aux postes triphases
US9355796B2 (en) 2011-01-25 2016-05-31 Mitsubishi Electric Corporation Switch
KR101212783B1 (ko) 2011-06-28 2012-12-18 현대중공업 주식회사 가스절연기기용 3-ｗａｙ 스위치
CN102339698B (zh) * 2011-09-16 2014-04-16 中国西电电气股份有限公司 一种复合式高压组合电器集成装置
DE102013205354B3 (de) * 2013-03-26 2014-07-10 Alstom Technology Ltd. Elektrische Schaltanlage
CN103474271B (zh) * 2013-09-22 2016-04-20 贵州泰永长征技术股份有限公司 一种高速转换开关电器
IN2013KO01351A (zh) * 2013-11-29 2015-06-05 Schneider Electric Ind Sas
CN104517755A (zh) * 2014-06-20 2015-04-15 广西春茂电气自动化工程有限公司 开关三工位转换控制盘
FR3025049A1 (fr) * 2014-08-20 2016-02-26 Alstom Technology Ltd Systeme de commande d'un appareillage electrique a accouplement selectif
CN104505279A (zh) * 2014-12-25 2015-04-08 中国西电电气股份有限公司 三工位位置转换装置及基于该位置转换装置的隔离开关设备
CN106409597A (zh) * 2015-07-31 2017-02-15 西门子公司 用于电气开关的三相联动机构及其气体绝缘开关
EP3179496B1 (en) * 2015-12-10 2018-08-22 ABB Schweiz AG Rotary auxiliary switches for medium voltage switchgears
WO2017141060A1 (en) 2016-02-18 2017-08-24 Koncar - Elektricni Visokonaponski Aparati D.D. Combined disconnecting-earthing switching module for a gas-insulated switchgear
EP3336870B1 (en) 2016-12-14 2021-11-03 General Electric Technology GmbH A gis with a disconnector-earthing switch
KR101897736B1 (ko) * 2017-01-06 2018-09-12 엘에스산전 주식회사 가스절연 개폐장치용 3웨이 단로기와 접지개폐기
CN109509648B (zh) * 2017-09-15 2022-05-27 Abb瑞士股份有限公司 用于切换装置的减速机构和切换装置
CN112786317B (zh) * 2019-11-07 2023-03-21 国创移动能源创新中心(江苏)有限公司 一种开关模块、选择式开关及功率分配器
CN113140423B (zh) * 2020-01-19 2024-07-02 河南平芝高压开关有限公司 一种三相共箱开关壳体和隔离接地组合开关
CN111326365B (zh) * 2020-03-30 2022-07-05 山东泰开电力开关有限公司 一种分动式三位置开关及使用方法
US12112905B2 (en) * 2022-11-17 2024-10-08 Southern States, Llc Alternative gas current pause circuit interrupter

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Also Published As

Publication number Publication date
CN101728096A (zh) 2010-06-09
FR2937176B1 (fr) 2010-12-03
US8173927B2 (en) 2012-05-08
CN101728096B (zh) 2014-05-14
ATE527675T1 (de) 2011-10-15
US20100089875A1 (en) 2010-04-15
EP2178099A1 (fr) 2010-04-21
FR2937176A1 (fr) 2010-04-16

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