EP3786999B1 - Unité rotative pour dispositif de commutation haute tension - Google Patents

Unité rotative pour dispositif de commutation haute tension Download PDF

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Publication number
EP3786999B1
EP3786999B1 EP19194582.3A EP19194582A EP3786999B1 EP 3786999 B1 EP3786999 B1 EP 3786999B1 EP 19194582 A EP19194582 A EP 19194582A EP 3786999 B1 EP3786999 B1 EP 3786999B1
Authority
EP
European Patent Office
Prior art keywords
rotary unit
switching device
base frame
rotary
previous
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
EP19194582.3A
Other languages
German (de)
English (en)
Other versions
EP3786999A1 (fr
Inventor
Viswanatha Reddy KOMMA
Sateeswara Reddy MOGATALA
Mariusz ROHMANN
Dirk SCHRÄDER
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 Energy Global GmbH and Co KG
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 Energy Global GmbH and Co KG filed Critical Siemens Energy Global GmbH and Co KG
Priority to EP19194582.3A priority Critical patent/EP3786999B1/fr
Priority to PL19194582.3T priority patent/PL3786999T3/pl
Publication of EP3786999A1 publication Critical patent/EP3786999A1/fr
Application granted granted Critical
Publication of EP3786999B1 publication Critical patent/EP3786999B1/fr
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
    • H01H31/02—Details
    • H01H31/023—Base and stationary contacts mounted thereon
    • 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
    • H01H31/30—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 actuated through the movement of one or more insulators

Definitions

  • the present disclosure relates to switching devices such as air-insulated disconnectors. More particularly, the present disclosure relates to a rotary unit typically employed in disconnectors such as a center-break type, a double-break type disconnector, a knee-type, a vertical break type, a pantograph type, and/or a semi-pantograph type disconnector having turning/operating insulators installed on a rotary unit.
  • a rotary unit typically employed in disconnectors such as a center-break type, a double-break type disconnector, a knee-type, a vertical break type, a pantograph type, and/or a semi-pantograph type disconnector having turning/operating insulators installed on a rotary unit.
  • a switching device as known for example from DE 20 09 759 A1 and US 3 339 037 A , is for example a disconnector.
  • a disconnector is an essential part of electrical power substations.
  • a disconnector indicates a visible isolating distance via an air-isolated gap.
  • a disconnector is an assembly having a function of assuring an interruption of voltage supply line to the switchgear when the disconnector is open, thus isolating the switchgear from electric supply.
  • a disconnector typically includes various configurations such as horizontal break, vertical break, pantograph, etc.
  • FIG 1A is a perspective view of an active part of a switching device 100 such as a horizontal center-break type disconnector according to state of the art.
  • the switching device 100 has movable current path arms 101A and 101B detachably coupled to each other and capable of rotation to occupy two positions, namely a closed position and an open position.
  • the configuration shown in FIG 1A represents the closed position wherein the moving arms 101A and 101B are in electrical contact with each other via a main contact system 103. In the open position, the moveable contact arms 101A and 101B rotate so as to break the electrical contact between them.
  • Each of the moveable contact arms 101A and 101B are connected to the electricity supply and to the distribution bus bars via transfer contact systems 102C and 102D having rotatable terminal stems 102A and 102B respectively.
  • Each of the terminal stems 102A and 102B, the moveable contact arms 101A and 101B, and the main contact system 103, are supported by insulators 104A and 104B which are in turn supported by a base frame 106.
  • the base frame comprises rotary units 105 and 105B that incorporate a rotation drive mechanism providing linear and/or rotary movement to the insulators 104A and 104B and the contact system 103 thereby, leading to making and breaking of the current path between the moveable contact arms 101A and 101B.
  • the rotary units 105A and 105B typically comprise ball-bearings, shaft, disc, etc., designed for handling high mechanical loads.
  • FIG 1B is a perspective view of the base frame 106, according to state of the art, of the switching device 100 shown in FIG 1A .
  • Each of the rotary units 105A and 105B also known as rotary base units, rotary stool bases, rotary pedestals, etc.
  • rotary units 105A and 105B are casted or welded.
  • these are typically, semi-integrated to the substructure or base frame 106.
  • these conventional variants of the rotary units 105A and 105B also demand additional items and/or elements for stabilizing the base frame 106, for applications especially, with additional mechanical stresses and/or environment stress due to increased terminal size, wind, and/or seismic loads, beyond standardizations.
  • the switching device disclosed herein achieves the aforementioned object by a rotary unit which has a shape of a concave polygon and a near complete integration into the base frame.
  • a switching device for example, a high voltage disconnector such as a center break type disconnector or a double side break type disconnector.
  • the switching device disclosed herein comprises movable current path arms detachably coupled with one another, for controlling transfer of electrical current therebetween.
  • the switching device comprises at least one insulator operably connected with the moveable current path arms.
  • the switching device comprises a base frame supporting the insulators and the moveable current path arms.
  • the switching device comprises at least one rotary unit physically integrated with the base frame and configured to support the insulator(s).
  • the rotary unit transfers torque to the moveable current path arms via insulators for making and breaking of the electrical contact.
  • "physically integrated” refers to a rigid attachment between the rotary unit and the base frame such that the rotary unit is installed at least partially within the base frame and not completely above the base frame. This physical integration results in a significant stabilization effect on the base frame and partially eliminates stabilizing or stiffening elements used for enhancing mechanical strength of the base frame.
  • the rotary unit is configured as a hollow member defining a space there-within.
  • the space is centrally defined in the rotary member such that the physical dimensions of this defined space are based on one or more elements to be accommodated there-within.
  • the elements comprise, for example, bearings, bearing seats, a turning shaft, etc., to transmit the rotary movement to the insulators.
  • the rotary unit is configured as a generally concave polygon.
  • "generally concave polygon” refers to a three-dimensional structure having at least one concave surface.
  • the generally concave polygon is, for example, a star-shaped unit.
  • the rotary unit comprises one or more concave surfaces.
  • the rotary unit is, for example, a triangular, a quadrangular, a polygonal, etc., structure having one or more concave surfaces.
  • the rotary unit is configured by an extrusion manufacturing or a casting manufacturing process, that is, either the material from the surfaces is removed, that is, extruded or a cast is developed so as to form one or more concave surfaces.
  • an amount of material to be retained in the rotary unit is a function of the space required to be defined inside the rotary unit to accommodate the bearing, the bearing seats, and/or the turning shaft.
  • the amount of material to be retained is a function of the mechanical stability required to support the insulator(s) and/or to be imparted to the base frame so that an equal distribution of mechanical stresses occurs across the rotary unit.
  • the concave surfaces of the rotary unit provide cost optimized manufacturing due to reduced machining efforts. Moreover, with casting manufacturing the material requirements are significantly decreased thereby, decreasing costs associated therewith.
  • One or more concave surfaces of the rotary unit are physically disposed against one or more channels of the base frame so as to be in rigid contact with the base frame.
  • the rigid connection between the rotary unit and the base frame is achieved via fasteners comprising, for example, screws, nuts, studs, etc.
  • the rotary unit assumes an isotoxal geometry, for example, having a top and a bottom surface shaped as a multi-vertex star, for example, a three-point star, a four-point star, or even an eight-point star.
  • the star-shaped geometry optimizes weight of the rotary unit while enabling easy integration within the base frame.
  • one or more vertices of the rotary unit are physically disposed against the channels.
  • the rotary unit is configured to have orifices drilled or punched along a length wise edge at each of the vertices that are physically disposed against the channels.
  • the fasteners can be installed in these orifices to affix the rotary unit to the channels.
  • the rotary unit assumes a hyperboloid shape with a top and a bottom surface shaped as a multi-vertex star. According to this aspect, only as much material is retained, as required for providing a surface area for supporting one or more elements such as the turning shaft, the bearing, the insulators, etc.
  • FIG 2 illustrates a rotary unit 201 according to an embodiment of the present disclosure, integrated within a base frame 106.
  • the rotary unit 201 is physically disposed against channels 106A and 106B of the base frame 106.
  • the rotary unit 201 is affixed inside the base frame 106 via screws, nuts, studs, etc. This configuration provides the required stability and/or stiffness to the base frame 106 thereby, at least partially eliminating additional stiffening elements.
  • a turning shaft 202 is centrally disposed inside the rotary unit 201 with help of bearings (not shown) and bearing seats (not shown).
  • the turning shaft 202 transfers rotary movement to one or more of the insulators 104A and 104B shown in FIG 1A . This transfer of movement is achieved via a turn table 203 positioned over the turning shaft 202.
  • FIGS 3A-3B illustrate different views of the rotary unit 201, according to an embodiment of the present disclosure having two concave surfaces 201B.
  • FIG 3A is a perspective view of the rotary unit 201.
  • FIG 3B is a plan view, that is, a top view of the rotary unit 201 shown in FIG 3A .
  • the rotary unit 201 is a hollow member defining a space 201C there-within.
  • the space 201C accommodates the turning shaft 202 shown in FIG 2 .
  • the rotary unit 201 has a generally cuboidal shape with two concave surfaces 201B and two nearly flat surfaces 201E. Due to the concave surfaces 201B, the rotary unit 201 has a generally star shape with four corners.
  • Each of the nearly flat surfaces 201E is disposed against channels 106A and 106B respectively.
  • Multiple orifices 201D are drilled into the flat surfaces 201A adjacent to the nearly flat surfaces 201E, to hold the fasteners such as screws, studs, etc., to be affixed to the channels 106A and 106B of the base frame 106.
  • the rotary unit 201 is configured as a generally concave polygon, for example, by extruding material from the surfaces 201B and 201E. Amount of material extruded from the surfaces 201B make them concave compared to the material extruded from surfaces 201E making them nearly flat.
  • the bearing or the space 201C required to be defined by the rotary unit 201 and/or the fastening mechanism used for affixing the rotary unit 201 to the channels 106A and 106B defines an amount of material that can be extruded from the rotary unit 201.
  • FIGS 4A-4B illustrate different views of the rotary unit 201, according to an embodiment of the present disclosure having four concave surfaces 201B.
  • FIG 4A is a perspective view of the rotary unit 201 and is another embodiment of the rotary unit 201 shown in FIGS 3A-3B .
  • FIG 4B is a plan view, that is, a top view of the rotary unit 201 shown in FIG 4A .
  • the rotary unit 201 shown in FIG 4A has comparatively more material extruded from all four surfaces 201B making them concave surfaces 201B thereby, making the rotary unit 201 a generally star-shaped unit having four corners or vertices.
  • the rotary unit 201 has flat surfaces 201A around these four corners. Multiple orifices 201D are drilled on the flat surfaces 201A through which fasteners are inserted so as to affix the rotary unit 201 to the channels 106A and 106B.
  • the rotary unit 201 shown in FIGS 3A-3B provides highly optimized mechanical stability and stiffness to the base frame 106 due to its configuration, that is, overall amount of material extruded or casted.
  • the rotary unit 201 shown in FIGS 4A-4B provides a higher degree of freedom while assembly due to its symmetrical configuration.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (7)

  1. Dispositif (100) de commutation comportant :
    - des bras (101A, 101B) mobiles de trajet de courant reliés de manière amovible l'un à l'autre, pour commander le transfert de courant électrique entre eux ;
    - au moins un isolant (104A, 104B) relié fonctionnellement aux bras (101A, 101B) mobiles de trajet de courant ; et
    - un bâti (106) de base supportant le au moins un isolant et les bras (101A, 101B) mobiles de trajet de courant ; et
    - au moins une unité (201) rotative intégrée physiquement dans le bâti (106) de base et configurée pour supporter le au moins un isolant (104A, 104B) ;
    caractérisé en ce que :
    - l'unité (201) rotative est configurée en un polygone concave.
  2. Dispositif (100) de commutation suivant la revendication précédente, dans lequel l'unité rotative est configurée en tant qu'un élément creux définissant un espace (201C) en son sein.
  3. Dispositif (100) de commutation suivant la revendication 2, dans lequel l'espace (201C) est défini en fonction d'un ou plusieurs éléments (202) à y loger.
  4. Dispositif (100) de commutation suivant l'une quelconque des revendications précédentes, dans lequel l'unité (201) rotative comporte au moins une surface (201B, 201E) concave.
  5. Dispositif (100) de commutation suivant la revendication 4, dans lequel la au moins une surface (201B, 201E) concave de l'unité (201) rotative est configurée par l'une d'une fabrication par extrusion et d'une fabrication par coulée.
  6. Dispositif (100) de commutation suivant l'une quelconque des revendications précédentes, dans lequel une ou plusieurs surfaces (201A, 201B, 201E) de l'unité (201) rotative sont physiquement disposées contre un ou plusieurs canaux (106A, 106B) du bâti (106) de base.
  7. Dispositif (100) de commutation suivant l'une quelconque des revendications précédentes qui est un sectionneur haute tension.
EP19194582.3A 2019-08-30 2019-08-30 Unité rotative pour dispositif de commutation haute tension Active EP3786999B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19194582.3A EP3786999B1 (fr) 2019-08-30 2019-08-30 Unité rotative pour dispositif de commutation haute tension
PL19194582.3T PL3786999T3 (pl) 2019-08-30 2019-08-30 Jednostka obrotowa do urządzenia przełączającego wysokiego napięcia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19194582.3A EP3786999B1 (fr) 2019-08-30 2019-08-30 Unité rotative pour dispositif de commutation haute tension

Publications (2)

Publication Number Publication Date
EP3786999A1 EP3786999A1 (fr) 2021-03-03
EP3786999B1 true EP3786999B1 (fr) 2023-03-01

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Application Number Title Priority Date Filing Date
EP19194582.3A Active EP3786999B1 (fr) 2019-08-30 2019-08-30 Unité rotative pour dispositif de commutation haute tension

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EP (1) EP3786999B1 (fr)
PL (1) PL3786999T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2031843B1 (en) * 2022-05-12 2023-11-17 Croonwolter&Dros B V Method and assembly bed for assembling an upright structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339037A (en) * 1965-07-12 1967-08-29 S & C Electric Co High voltage switch construction
DE6917027U (de) * 1969-04-26 1969-10-09 Ruhrtal Elek Zitaetsgesellscha Unterkonstruktion fuer trennschalter
DE2009759C3 (de) * 1970-03-03 1979-01-04 Ruhrtal-Elektrizitaetsgesellschaft Hartig & Co, 4300 Essen Trennschalter
DE7308666U (de) * 1973-03-05 1974-02-14 Siemens Ag Drehtrennschalter

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Publication number Publication date
PL3786999T3 (pl) 2023-07-24
EP3786999A1 (fr) 2021-03-03

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