EP0308862A2 - Sectionneur haute-tension - Google Patents

Sectionneur haute-tension Download PDF

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Publication number
EP0308862A2
EP0308862A2 EP88115381A EP88115381A EP0308862A2 EP 0308862 A2 EP0308862 A2 EP 0308862A2 EP 88115381 A EP88115381 A EP 88115381A EP 88115381 A EP88115381 A EP 88115381A EP 0308862 A2 EP0308862 A2 EP 0308862A2
Authority
EP
European Patent Office
Prior art keywords
switching arm
insulator
switching
support insulator
disconnector according
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.)
Withdrawn
Application number
EP88115381A
Other languages
German (de)
English (en)
Other versions
EP0308862A3 (fr
Inventor
Ferdinand Dr. Lutz
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.)
ABB AG Germany
ABB AB
Original Assignee
Asea Brown Boveri AG Germany
Asea Brown Boveri AB
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 Asea Brown Boveri AG Germany, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Germany
Publication of EP0308862A2 publication Critical patent/EP0308862A2/fr
Publication of EP0308862A3 publication Critical patent/EP0308862A3/fr
Withdrawn legal-status Critical Current

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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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • 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
    • H01H33/42—Driving mechanisms
    • 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

Definitions

  • the invention relates to a high-voltage disconnector, in particular rotary disconnector, scissor disconnector, folding disconnector and the like., With at least one rotatable switching arm, which cooperates with at least one fixed contact piece and / or another rotatable switching arm, and with a drive for at least one of the switching arms.
  • Disconnectors of the type mentioned are mostly installed in open-air systems and a distinction is made here between rotary disconnectors, folding disconnectors and scissor disconnectors.
  • rotary disconnectors for example, one or two switching arms are mounted on vertically extending support insulators spaced from one another; if the switch has only one switching arm, the other support insulator carries the fixed contact piece.
  • a motor and linkage are generally provided; the latter transfers the rotary movement of the motor to the support insulator or the support insulators with the switching arms.
  • Scissor disconnectors or pantograph disconnectors have two switching arm arrangements coupled together in scissor-like fashion on an insulator column; they are driven by means of a motor, an electrically insulating rotary shaft and a reversing gear which is at high voltage potential.
  • One switching arm or the two switching arms of a folding circuit breaker are driven in the same way. All of these types of construction, in particular their mechanical or electrical drive, are relatively expensive in terms of cost; The assembly of the individual components can not be done in the factory, but essentially only on the construction site and accordingly the assembly itself is time-consuming.
  • the object of the invention is to provide a disconnector of the type mentioned, which is considerably simplified in its construction and which can be manufactured and assembled to a large extent in the factory and therefore requires little assembly and, in particular, adjustment work on the construction site.
  • the drive designed as a hydraulic or pneumatic drive device at high voltage potential is spatially directly associated with the switching arm, and that the hydraulic or pneumatic fluid for the drive from a pressure generator located at ground potential via pressure-resistant, electrically insulating lines of the high voltage potential located drive device can be fed.
  • the particular advantage of the embodiment according to the invention is that a substantial part of the components and their mechanical adjustment, which are usually necessary for the transmission of the drive movement to the shift arm or arms, can be dispensed with.
  • the switching arm has a cavity in the region of its axis of rotation, in which the drive device is accommodated. This cavity can simply closed with a lid. This is particularly advantageous if - as is apparent from the characterizing part of claim 6 - the switching arm consists of a box profile, in which the drive can then be easily installed.
  • the lines for transporting the fluid and possibly the glass fiber lines are led through at least one bore in the support insulator according to the characterizing features of claims 7 and 8.
  • These holes can then be potted or foamed with a plastic, as is apparent from the characterizing features of claim 9, wherein, according to claim 10, there is also the possibility of applying a waterproof sealing layer after casting or foaming the holes in the supporting insulator in order to prevent that moisture enters the inside of the bores, which can lead to a deterioration in the insulating ability.
  • This second insulator consists of plastic, preferably of silicone plastic, wherein the lines for transporting the fluid and, if appropriate, the additional glass fiber lines can be cast in this second insulator.
  • a further advantageous embodiment of the invention can be such that the second isolator, which is used to transport the fluid, is designed flexibly in accordance with the characterizing features of claim 13.
  • this has the advantage that the support insulators for the individual switching arms do not have to be provided with holes; the glass fiber lines and the lines used to transport the fluid can be cast directly into the second insulator.
  • the drive device is constructed as can be seen from the characterizing features of claims 16 to 18.
  • the drive can advantageously be designed as a piston-cylinder arrangement, which on the one hand is fastened to the switching arm and on the other hand is coupled to the support insulator, which is fixed in place.
  • the switching arm moves, and vice versa, when the piston or piston rod is retracted again, the switching arm swings back.
  • the switching arm is fixed in the "on” and “off” switching position according to the characterizing features of claims 17 and 18 by means of a compression spring, which can either be a coil spring or, in a particularly advantageous manner, a leaf spring.
  • the invention is implemented in a scissor disconnector, only a single drive device in one of the switching arms is required; the other switching arms to form the scissor disconnector are then automatically driven because they are coupled to the first switching arm.
  • a further advantageous embodiment of the invention can be that two drives, each of which is assigned to a switching arm, by fluidic series connection coupled with each other and their movement synchronized.
  • FIG. 1 shows a perspective, sketched representation of a rotary disconnector 10 which has a base frame 11 which is U-shaped in cross section. At its free ends, support or support insulators 12 and 13 are set up and fastened thereto, at the upper end of each one to the top, ie. H. towards the free end tapering box section having rotatable switching arms 14 and 15 is supported.
  • a control device 16 in which a hydraulic device is accommodated, is located on the base frame 11. Hydraulic fluid is supplied to drive devices by means of pressure-resistant lines 17 and 18 made of insulating plastic, which are housed within the switching arms 14 and 15, see below.
  • connection points 21 and 22 which are usually designed as screw connections or clamp connections.
  • FIG. 2 shows an insight into the housing opening or housing hollow 30 of the switching arm with the cover removed. From both figures you can see the structure and the mode of operation of the drive device.
  • a cap 31 is placed on the insulator, on which two eyes 34 and 37 are formed, of which the eye 34 is longer than the eye 37; both eyes project radially and form an angle of approx. 45 ° with each other.
  • the free end of the piston rod 33 of a piston-cylinder arrangement 32 is articulated on the eye 34, whereas the other end of the piston-cylinder arrangement 32, that is to say the other end of the cylinder, is articulated on a nose-like projection 35 on the switching arm 14.
  • the hydraulic lines 17 are guided through a bore (not shown) in the support insulator and emerge from bores as hydraulic lines 17a and 17b on the cap 31. They are each connected to cylinders at one or the other end of the piston-cylinder arrangement 32, with one line opening into the space to the left of the piston and the other line opening into the space to the right of the piston.
  • a leaf spring 36 is articulated on the other, shorter eye 37, the other end of which is articulated on a further nose-like projection 38 in the switching arm 14.
  • One end of a flexible connection 39 is also connected to the cap 31, the other end of which is fastened to the switching arm 14 by means of screw connections and is used for the electrically conductive connection between the cap 31 and the switching arm 14.
  • the switching arm 40 can be rotated about the axis of the cap 31 and the insulator located thereunder.
  • the starting position of the switching arm 14 shown in FIG. 2b is characterized by the piston or drive rod 33 pulled out of the drive cylinder 32. If, for example, pressurized fluid is introduced into the drive cylinder 32 via the hydraulic line 17a, the one located within the drive cylinder also pulls Piston connected to the cylinder rod 33, the piston rod 33 into the cylinder. This movement of the piston rod 33 exerts a tensile force on the webs 34 and 35, respectively.
  • the leaf spring 36 is tensioned both in the starting position and in the end position of the switching arm 14, and thus exerts a compressive force on the projections 37 and 38.
  • the line of action of this pressure force is identical to the connecting line between the eyes in the two projections 37 and 38, and thus not through the Axis of rotation of the switching arm 14.
  • the leaf spring therefore exerts a torque on the switching arm in both the starting position and the end position, which holds the arm in the respective position.
  • the spring passes through a position in which it is tensioned more than in the positions shown here and in which its line of action runs through the axis of rotation of the switching arm. In this position, the direction of the torque exerted on the shift arm is reversed.
  • the flow of the electrical current from the movable switching arm 14 to the fixed cap 31 and from there to the terminal 21 is made possible by the flexible connection 39.
  • the perspective sketch of FIG. 3 gives a better impression of the spatial arrangement of the individual components of the drive device accommodated in the switching arm 14.
  • FIGS. 2 and 3 show designs in which the hydraulic lines 17 are passed through the interior of the isolator 12, through the isolator head, through an intermediate piece with a pivot and an electrical connection 21, and through a cap 31 fastened thereon.
  • FIG. 4 outlines an alternative embodiment according to the invention, in which a second insulator 40 runs parallel to the support insulator 12, which is designed to be flexible and through which the hydraulic lines 17a and 17b and a glass fiber line 41 run.
  • the partially sectioned illustration shows the confluence of the flexible insulator 40 in the cavity 30 of the rotatable switching arm 14.
  • an intermediate piece 43 is attached, which as Pivot, serves as a fastening for the cap 31, and as an electrical connection 21.
  • a protective sleeve 45 protects the surface of the piston rod 33 from environmental influences.
  • the web 37, to which the leaf spring 36 is fastened, is likewise not visible here on the cap 31.
  • a sliding coating 33 is applied to the pivot.
  • the cylindrical indentation provided on the bottom of the switching arm 14 is seated on this sliding coating, so that the switching arm 14 can be rotated about the pivot pin of the intermediate piece 43.
  • the cap 31 according to FIGS. 2a, 2b and 3 and FIG. 4 differ only insofar as the cap according to FIG. 4 has no bore through which the lines 17a and 17b pass. Because of the remaining identity of the two caps, they are identified by the same reference number.
  • the configuration according to the invention can of course also be used with a scissor separator.
  • a scissor separator is shown in perspective in FIG.
  • a two-part support insulator 51 carries at its upper end, that is to say on the insulator head 52, an intermediate piece 53 (see FIG. 7) and is firmly connected to it.
  • This intermediate piece 53 has an electrical contact 54 for the electrical connection of the isolator.
  • the intermediate piece 53 has an arm 55 to which an additional insulator 56 arranged parallel to the support insulator 51 is fastened. Hydraulic lines and fiber optic lines are not visible here inside this additional insulator 56.
  • the mounting and mounting of the scissor arms 57 and 58 on the support insulator is explained in more detail with reference to FIG. 7.
  • the intermediate piece 53 Located on the insulator head 52 is the intermediate piece 53, on which two pins 90 and 91, which extend transversely to the support insulator axis and project in the opposite direction, are formed.
  • the pins 90 and 91 are provided with a coating 92, 93 with a low coefficient of friction, which corresponds to the coating 44, and both switching arms 57 and 58 also have a passage (indentation) and on the end face of the pins 90 and 91 each attached a cap, which corresponds to the cap 31 identical in structure and attachment.
  • Hydraulic lines 95 and 96 are led out of a channel 94, which is open at the top, within the arm 55 and are guided to the drive devices in the switching arms 57 and 58.
  • the coordination of the rotary movement of two switching arms 70, 71 of a rotary disconnector z. B. also the switching arms 57 and 58 of the scissor disconnector according to FIG. 5 can be realized by fluidic series connection of the fluidic drive devices each associated with an arm, as shown in the sketched illustration in FIG. Is from the When pump 72 pressurizes fluid while being pumped through line 73 into space 77 of drive cylinder 76, piston rod 79 moves out of drive cylinder 76.
  • the force exerted thereby by the piston rod 79 on the fixed web 80 has already been described in detail with reference to FIG. 2, to a rotation of the switching arm 70 in the direction indicated by the arrow F.
  • the movement of the piston rod 79 causes the space 78 of the drive cylinder 76 reduced, and the fluid in this space 78 is forced out of the space into the line 74.
  • the line 74 opens into the space 82 of the drive cylinder 81 located in the second switching arm 71.
  • the fluid flowing through the line 74 in this space 82 causes the piston rod 84 to be drawn into the drive cylinder 81.
  • the tensile force exerted thereby by the piston rod 84 on the fixed web 84 leads to a rotary movement of the switching arm 71 in the direction indicated by the arrow G.
  • the fluidic circuit is closed in that fluid is pressed out of the reducing space 83 of the drive cylinder 81 and fed back to the pump 72 via the line 75.
  • the lines 95 and 96 correspond to the lines 95 and 96 led out on the channel 94 in FIG. 6.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP88115381A 1987-09-23 1988-09-20 Sectionneur haute-tension Withdrawn EP0308862A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873732004 DE3732004A1 (de) 1987-09-23 1987-09-23 Hochspannungs-trennschalter
DE3732004 1987-09-23

Publications (2)

Publication Number Publication Date
EP0308862A2 true EP0308862A2 (fr) 1989-03-29
EP0308862A3 EP0308862A3 (fr) 1989-07-19

Family

ID=6336667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115381A Withdrawn EP0308862A3 (fr) 1987-09-23 1988-09-20 Sectionneur haute-tension

Country Status (2)

Country Link
EP (1) EP0308862A3 (fr)
DE (1) DE3732004A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005554A1 (fr) * 1997-07-23 1999-02-04 Siemens Aktiengesellschaft Ensemble guide d'ondes lumineuses pour la connexion de points se trouvant a des potentiels electriques differents
CN105261514A (zh) * 2015-11-17 2016-01-20 寇明军 一种双柱双臂插入式隔离开关
CN111108574A (zh) * 2017-09-14 2020-05-05 西门子股份公司 户外开关装置和用于开关多个相位的高电压的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3941882A1 (de) * 1989-12-19 1991-06-20 Asea Brown Boveri Hochspannungstrennschalter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089829A (fr) * 1953-12-23 1955-03-22 Merlin Gerin Perfectionnements aux sectionneurs rotatifs
FR1128115A (fr) * 1955-06-24 1957-01-02 Cie Gen Equip Aeronautique Sectionneur sur câble aérien et sa commande hydraulique
FR2068669A1 (fr) * 1969-11-26 1971-08-27 Reyrolle Parsons Ltd
FR2125391A1 (fr) * 1971-02-12 1972-09-29 Asea Ab

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1465849A1 (de) * 1963-07-12 1969-04-24 Licentia Gmbh Stiel-Stuetzisolator aus Kunststoff
DE1640910A1 (de) * 1967-03-02 1970-12-03 Licentia Gmbh Druckgasschalter mit einem Hoch- und einem Niederdrucksystem
SE342354B (fr) * 1970-05-27 1972-01-31 Asea Ab
DE2063093C3 (de) * 1970-12-11 1976-01-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Hochspannungsschalter
DE2901872A1 (de) * 1979-01-18 1980-07-31 Siemens Ag Hochspannungsisoliereinrichtung, insbesondere isolator mit einem lichtleiter
DE3121795A1 (de) * 1981-06-02 1982-12-16 Gossen Gmbh, 8520 Erlangen "koppelstuetzisolator"
DE3426536A1 (de) * 1984-07-18 1986-01-23 Siemens AG, 1000 Berlin und 8000 München Elektrische isolatorsaeule
US4610033A (en) * 1984-12-14 1986-09-02 Harvey Hubbell Incorporated Insulator with fiber optic communication channel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089829A (fr) * 1953-12-23 1955-03-22 Merlin Gerin Perfectionnements aux sectionneurs rotatifs
FR1128115A (fr) * 1955-06-24 1957-01-02 Cie Gen Equip Aeronautique Sectionneur sur câble aérien et sa commande hydraulique
FR2068669A1 (fr) * 1969-11-26 1971-08-27 Reyrolle Parsons Ltd
FR2125391A1 (fr) * 1971-02-12 1972-09-29 Asea Ab

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999005554A1 (fr) * 1997-07-23 1999-02-04 Siemens Aktiengesellschaft Ensemble guide d'ondes lumineuses pour la connexion de points se trouvant a des potentiels electriques differents
CN105261514A (zh) * 2015-11-17 2016-01-20 寇明军 一种双柱双臂插入式隔离开关
CN111108574A (zh) * 2017-09-14 2020-05-05 西门子股份公司 户外开关装置和用于开关多个相位的高电压的方法

Also Published As

Publication number Publication date
DE3732004A1 (de) 1989-04-06
EP0308862A3 (fr) 1989-07-19

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