EP4350730A1 - Vorrichtung zur immobilisierung eines trennschalters einer elektrischen netzstation - Google Patents

Vorrichtung zur immobilisierung eines trennschalters einer elektrischen netzstation Download PDF

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Publication number
EP4350730A1
EP4350730A1 EP22306514.5A EP22306514A EP4350730A1 EP 4350730 A1 EP4350730 A1 EP 4350730A1 EP 22306514 A EP22306514 A EP 22306514A EP 4350730 A1 EP4350730 A1 EP 4350730A1
Authority
EP
European Patent Office
Prior art keywords
disconnector
immobilizing
clamp
holding body
threaded rod
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.)
Pending
Application number
EP22306514.5A
Other languages
English (en)
French (fr)
Inventor
Dimitri GASCON
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.)
RTE Reseau de Transport dElectricite SA
Original Assignee
RTE Reseau de Transport dElectricite SA
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 RTE Reseau de Transport dElectricite SA filed Critical RTE Reseau de Transport dElectricite SA
Priority to EP22306514.5A priority Critical patent/EP4350730A1/de
Publication of EP4350730A1 publication Critical patent/EP4350730A1/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • 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
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/06—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using tools as locking means

Definitions

  • the present invention relates to a device for immobilizing an electrical substation disconnector of an electrical network for transporting and/or distributing electricity.
  • Such a disconnector is an electromechanical device making it possible to mechanically separate an electrical circuit and its power supply, while physically ensuring an electrically satisfactory disconnection distance.
  • the objective is in particular to ensure the safety of people working on the isolated part of the electrical network when the disconnector is open or to temporarily condemn a malfunctioning part of the network in order to be able to use the other parts.
  • the disconnector when the disconnector is in the closed position, the current passes and the transmission of electricity is ensured; when the disconnector is in the open position with the agreed satisfactory disconnection distance, safety is ensured for intervention on the part of the network thus condemned.
  • the disconnector must be able to be immobilized, particularly in the open position, to meet current safety standards.
  • the invention applies more particularly to a disconnector immobilization device comprising a main holding body and means for immobilizing the disconnector.
  • a first device of this type is for example presented in the patent document WO 2010/089781 A1 . It takes the form of a complex electromechanical mechanism surrounding a rotating drive shaft of the disconnector. It cannot be installed or removed in a simple way and affects the structure of the disconnector itself.
  • a second device of this type is for example presented in the patent document WO 2018/032304 A1 . It takes the form of a gradual opening and closing mechanism for the gear disconnector. It is much simpler than the previous one, purely mechanical, but not very secure. Furthermore, it cannot simply be installed or removed and affects the structure of the disconnector.
  • the device for immobilizing the disconnector is placed close to the latter, in particular at the bottom of the pole of the disconnector.
  • pin locking devices again simple but designed to be placed near and at the base of the disconnectors' poles.
  • any rotating drive shaft of the disconnector to open or close it can extend away from the disconnector itself, in particular downwards and outside any sensitive area requiring a de-energizing neighboring electrical substation elements
  • a very simple device is proposed, easy to install and remove since it acts using pliers on the supporting architecture and the drive shaft of the disconnector, does not not affecting the structure of the disconnector and its drive shaft and allowing offset from the point of immobilization. It allows the disconnector to be immobilized in the open position, to secure any intervention on the part of the network thus condemned, or in the closed position, to prevent any untimely cut-off in the electrical substation.
  • the second immobilization clamp comprises a fixed jaw and a movable jaw with adjustable clamping slide-mounted in an arm carrying the fixed jaw.
  • the slide of the movable jaw is mounted in a helical slide connection around a threaded rod internal to the supporting arm of the fixed jaw and with a free end which can be rotated by a crank.
  • crank with a free drive sleeve, or a fixing pin of the crank with a free drive sleeve at the free end of the threaded rod internal to the carrying arm of the fixed jaw, and the cap replacement are mechanically connected, using cords, to the supporting arm of the fixed jaw of the second clamp or, where appropriate, to the intermediate fixing member.
  • the main holding body comprises a threaded rod fixed by screwing and using at least one nut to the second immobilizing clamp.
  • the first anchoring clamp takes the form of an earth vice mounted on a cylindrical tube arranged in a sliding pivot connection around the main holding body.
  • the cylindrical tube on which the earth vice is mounted can be immobilized by nuts on the threaded rod.
  • the immobilization device 10 shown schematically in front view on the figure 1 comprises a main holding body 12 which is presented, for example, in the form of a simple threaded rod at the ends of which are provided means for immobilizing a substation disconnector (not illustrated) in the open or closed position.
  • shaft 20 The function of shaft 20 is to rotate the disconnector to open or close it.
  • the first anchoring clamp 14 is mounted on a cylindrical tube 22 arranged in a sliding pivot connection around the main holding body 12, in particular at its first end 12A, as indicated respectively by the two arrows F1 and F2 on the figure 1 .
  • the cylindrical tube 22 can be immobilized in rotation and translation on the latter using nuts 24 at its ends. This allows the adjustment in translation and rotation of the positioning of the first clamp 14 on the frame 16.
  • the first clamp 14 can be mounted by bolting onto the cylindrical tube 22. It can take the simple form of an earthing vice, that is to say an electrical earthing clamp with an upright U-shaped 26 in which a stop 28 can be moved in translation between the two branches of the U using a threaded rod 30 manipulated by a crank 32 and itself mounted in a helical slide connection in one of the threaded branches of the upright in U 26. Anchoring is carried out by enclosing the portion of the framework 16 between the stop 28 and the other of the branches of the U-shaped upright 26.
  • the second immobilization clamp 18 is for example in the form of a fixed jaw 34 and a movable jaw 36 with adjustable tightening mounted in a slide 38 in a supporting arm 40 of the fixed jaw 34, for tightening the drive shaft 20 between the two jaws preventing it from pivoting around its longitudinal axis.
  • the slide 38 is mounted in a helical slide connection around a threaded rod 42 internal to the supporting arm 40 of the fixed jaw 34, for example mounted in a worm screw system.
  • This threaded rod 42 has a free end 44 projecting from the base of the supporting arm 40 so that it can be rotated using a crank 46.
  • the crank 46 can be secured and detached from the threaded rod 42. It thus has a free drive sleeve 48, capable of cooperating with the free end 44 to drive it in rotation .
  • this possibility of joining and uncoupling is materialized by a through hole 50 provided in the free end 44, a similar and corresponding through hole 52 in the base of the drive sleeve 48, as well as a pin 54.
  • To secure the threaded rod 42 and the crank 46 simply insert the free end 44 into the base of the drive sleeve 48, place the through holes 50 and 52 in correspondence, then slide the pin in these holes.
  • To separate the threaded rod 42 and the crank 46 simply remove the pin 54.
  • the crank 46 further has a crank arm 56 formed of a threaded rod screwed into the sleeve 48 and fixed longitudinally using at least one nut 58.
  • the immobilizing device 10 further comprises a cap 60 for replacing the crank 46 provided with means for preventing access to the threaded rod 42 to prevent it from being dragged in rotation.
  • This cap 60 is shaped to completely cover the free end 44 which protrudes from the base of the support arm 40. It can even partially engage in the support arm 40.
  • the means for hindering the cap 60 comprise a first plate 62 with holes 64 extending in a plane orthogonal to the axis of the threaded rod 42 when the cap 60 is arranged to replace the crank 46. They cooperate with a second plate 66 with holes 68 also extending in a plane orthogonal to the axis of the threaded rod 42 from the supporting arm 40 of the fixed jaw 34.
  • the second immobilization clamp 18, more precisely its supporting arm 40, is fixed to the second end 12B of the main holding body 12, for example using nuts when the latter is a threaded rod.
  • a cylindrical pulley 82 is mounted freely in rotation between the two side walls 78 and 80, and the second end 12B of the threaded rod 12 forming the main holding body 12 is screwed there and fixed using minus a nut 84.
  • the second immobilizing clamp 18 is both fixed to the second end 12B of the main holding body 12 and free to rotate around the axis of the pulley 82 as indicated by the arrow F3 on there figure 1 .
  • crank 46, the pin 54 and the cap 60 and its plate 62 can be mechanically connected, using cords, to the supporting arm 40 of the second clamp 18 or to the intermediate fixing member 72.
  • these are the pin 54 and the plate 62 secured to the cap 60 which are connected by cords to the bolting 76 of the intermediate fixing member 72.
  • FIG 2 illustrates the second immobilization clamp 18, as well as its intermediate fixing member 72 to the main holding body 12, when its two jaws are positioned around the shaft 20 driving the disconnector in rotation and before tightening.
  • the crank 46 is mounted on the threaded rod 42 and held by the pin 54. The tightening of the shaft 20 can be carried out.
  • the cap 60 is not used but remains attached to the assembly by cord.
  • FIG. 3 illustrates the second immobilization clamp 18, as well as its intermediate fixing member 72 to the main holding body 12, when its two jaws sufficiently tighten the shaft 20 to immobilize the disconnector in the open or closed position.
  • the crank 46 was removed by extracting the pin 54 and replaced by the cap 60. The latter is held in place to prevent any access to the threaded rod 42 thanks to the padlock 70 inserted in the holes 64 and 68 of the plates 62 and 66 Note that pin 54 is not used but remains attached by cord to the assembly.
  • the installation shown schematically on the Figure 4 illustrates an example of an electrical substation disconnector 86, in the upper part, mounted on a frame 16 itself mounted on a stabilizing base 88.
  • the framework 16 carrying the disconnector 86 is electrically connected to the earth and has for example a general quadrilateral shape formed of corner posts 90, transverse retaining plates 92 and an upper structure 94 with beams (not detailed because it is well known ) on which the disconnector 86 is mounted.
  • the disconnector 86 is made up of two symmetrical branches each comprising a conductive side flap 96, intended to be in contact with the conductive side flap of the other branch in closed arrangement of the disconnector 86. These flaps 96 are secured in opening and closing by a mechanism 97 (not detailed because it is well known) for supporting and actuating the disconnector 86.
  • This mechanism 97 is more precisely mounted on the upper structure 94 with beams and on a common shaft 20 for driving the shutters 96 in rotation to control the opening or the closing of the disconnector 86.
  • a series of insulators 98 is for example arranged between the conductive side flap 96 of each branch of the disconnector 86 and the mechanism 97.
  • the drive shaft 20 also extends widely under the upper structure 94 with beams up to the lower part of the frame 16, particularly at eye level.
  • the disconnector 86 is illustrated in the open position by joint pivoting of its two conductive side flaps 96 driven in rotation by the drive shaft 20.
  • the open position is maintained securely by the immobilizing device 10 arranged in the lower part of the frame 16.
  • the latter is thus anchored by tightening its first clamp 14 (not visible in this figure) on one of the transverse holding plates 92 of the frame 16 and in arrangement immobilization of the disconnector 86 by tightening the drive shaft 20 using its second clamp 18.
  • the clamp 18 is held securely tightened in accordance with the configuration of the Figure 3 , that is to say using the cap 60, the plates 62, 66 (not visible in this figure) and the padlock 70.
  • FIG. 5 is a side view, in direction A indicated on the Figure 4 , the disconnector 86 and its supporting frame 16. It allows a better visualization of the immobilization device 10 anchored by tightening its first clamp 14 on one of the transverse holding plates 92 of the frame 16 and in immobilization arrangement of the disconnector 86 by tightening the drive shaft 20 using its second clamp 18, the cap 60, the plates 62, 66 and the padlock 70.
  • a method of opening, or closing, and immobilizing the disconnector 86 will now be detailed with reference to the succession of steps of the Figure 6 .
  • the disconnector 86 is opened, or closed, by rotational actuation of the drive shaft 20. This action is done at eye level in the lower part of the frame 16 and the shaft 20, in particular at a good distance from the disconnector 86 itself.
  • the immobilization device 10 is approached and placed in the lower part of the frame 16, still at eye level.
  • step 104 it is fixed to the frame 16 by tightening its first anchor clamp 14, as illustrated in the Figure 5 .
  • step 106 it is fixed to the lower end of the drive shaft 20 loaded in step 100 by tightening its second immobilizing clamp 18 using the crank 46, as illustrated on the figure 2 .
  • the disconnector 86 is immobilized in the open or closed position, securely by the padlocked cap 60, as illustrated on the figures 3 , 4 And 5 .
  • a disconnector immobilization device such as that described above makes it possible to act in a very simple manner, without impact on the structure of the disconnector, while remaining at a distance from any sensitive zone by offset from the immobilization point. . It is easy to install and place on an existing structure.
  • disconnector In particular, only one type of disconnector has been considered in the detailed description of a preferred embodiment of the present invention. But this is compatible with a large number of types of disconnectors, such as pantograph disconnectors for example. It is sufficient that the disconnector is of the type to be opened or closed by a rotation which can be carried out remotely on a drive shaft.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP22306514.5A 2022-10-07 2022-10-07 Vorrichtung zur immobilisierung eines trennschalters einer elektrischen netzstation Pending EP4350730A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22306514.5A EP4350730A1 (de) 2022-10-07 2022-10-07 Vorrichtung zur immobilisierung eines trennschalters einer elektrischen netzstation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22306514.5A EP4350730A1 (de) 2022-10-07 2022-10-07 Vorrichtung zur immobilisierung eines trennschalters einer elektrischen netzstation

Publications (1)

Publication Number Publication Date
EP4350730A1 true EP4350730A1 (de) 2024-04-10

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EP22306514.5A Pending EP4350730A1 (de) 2022-10-07 2022-10-07 Vorrichtung zur immobilisierung eines trennschalters einer elektrischen netzstation

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EP (1) EP4350730A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210788A (en) * 1978-07-10 1980-07-01 S&C Electric Company Manual operating handle assembly for circuit interrupter devices
US5451730A (en) * 1994-08-01 1995-09-19 Phillips, Sr.; James M. Electrical safety apparatus
WO2010089781A1 (en) 2009-02-05 2010-08-12 Modiano, Micaela Electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector
EP2347471A1 (de) * 2008-10-14 2011-07-27 Fameca Einrichtung zur erdung eines elektrischen leiters eines überlandkabels
WO2018032304A1 (zh) 2016-08-16 2018-02-22 朱伯秦 一种双闸刀高压隔离开关

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210788A (en) * 1978-07-10 1980-07-01 S&C Electric Company Manual operating handle assembly for circuit interrupter devices
US5451730A (en) * 1994-08-01 1995-09-19 Phillips, Sr.; James M. Electrical safety apparatus
EP2347471A1 (de) * 2008-10-14 2011-07-27 Fameca Einrichtung zur erdung eines elektrischen leiters eines überlandkabels
WO2010089781A1 (en) 2009-02-05 2010-08-12 Modiano, Micaela Electromechanical device for locking/releasing a mechanism for the manual operation of an actuation shaft, particularly of an electrical disconnector
WO2018032304A1 (zh) 2016-08-16 2018-02-22 朱伯秦 一种双闸刀高压隔离开关

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