WO1992007373A1 - Interrupteur-separateur - Google Patents

Interrupteur-separateur Download PDF

Info

Publication number
WO1992007373A1
WO1992007373A1 PCT/AT1991/000108 AT9100108W WO9207373A1 WO 1992007373 A1 WO1992007373 A1 WO 1992007373A1 AT 9100108 W AT9100108 W AT 9100108W WO 9207373 A1 WO9207373 A1 WO 9207373A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
semiconductor element
auxiliary
main
main contact
Prior art date
Application number
PCT/AT1991/000108
Other languages
German (de)
English (en)
Inventor
Ernst Sonntagbauer
Original Assignee
Elin Energieversorgung Gesellschaft M.B.H.
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
Priority claimed from AT206290A external-priority patent/ATA206290A/de
Priority claimed from AT218790A external-priority patent/ATA218790A/de
Application filed by Elin Energieversorgung Gesellschaft M.B.H. filed Critical Elin Energieversorgung Gesellschaft M.B.H.
Publication of WO1992007373A1 publication Critical patent/WO1992007373A1/fr

Links

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
    • H01H31/34—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching
    • H01H31/36—Contact moved by pantograph
    • 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
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/541—Contacts shunted by semiconductor devices
    • 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
    • H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the invention relates to an isolating switch, in particular a single-column scissor isolating switch, which has two main contacts and two auxiliary contacts, one auxiliary contact being assigned to one main contact and the auxiliary contact opening at a time after the main contact.
  • isolating switches are provided for switching almost without current. Furthermore, when the disconnector is open, there must be a visible one
  • Separation distance must be recognizable.
  • An assigned power switch ensures that the isolating switch is disconnected.
  • Disconnectors are also used where, for example, different busbars are to be switched among themselves.
  • switching operations which in principle have to be carried out without current, so-called commutation currents occur at low voltage.
  • Displacement currents are also unavoidable in these almost currentless switching operations.
  • switch-on and switch-off arcs due to the commutation currents and displacement currents described above.
  • the isolating switch If the isolating switch is closed, it must be able to carry both high operating currents and short-circuit currents that occur for a short time until they are disconnected by an assigned circuit breaker. To meet these requirements The main contacts as well as the counter-contact pieces of such isolating switches must always be in perfect condition, for example they must not show any damage due to erosion. This damage caused by erosion leads to increased contact resistance between the mating contact piece and the main contact, as a result of which the required operational safety is severely impaired.
  • Single-column scissor-type isolating switches are known in which the previously described requirements for isolating switches are solved in such a way that two auxiliary contacts are provided, which are arranged next to the two main contacts and only open after the main contacts.
  • the two auxiliary contacts are connected in parallel to the main contacts.
  • auxiliary contacts are located at a short distance from the main contacts, which, when the single-column scissor-type isolating switch is opened, can result in the Abri3 f arc not remaining in the area of the auxiliary contacts, but rather jumping over to the main contacts and there leads to damage by burning.
  • DE 3210155 AI suggests the installation of a separate isolating contact, in the region of which the Abri arc is to occur.
  • This isolating contact represents the actual isolating distance of the auxiliary contact.
  • the isolating contact which is realized with two contact brackets, is arranged electrically between a main contact and an auxiliary contact. When opening the single-column scissor-type switch, the main contacts first lift off Counter contact piece. Then the isolating contact opens and only then the auxiliary contacts.
  • the invention is therefore based on the object of realizing a circuit breaker, in particular single-column scissors circuit breaker, in which a high degree of operational reliability is ensured.
  • the aim of simple means is to keep the arc duration very short, as a result of which the erosion on the contact surfaces of the auxiliary contact and of the counter-contact piece practically does not occur.
  • the object is achieved by the invention.
  • This is characterized in that in each case a semiconductor element, in particular a diode or a
  • Thyristor is connected between the first or second main contact and the associated auxiliary contact such that the anode is conductively connected to one semiconductor element and the cathode is connected to the associated main contact in the other semiconductor element.
  • Another embodiment of the invention provides for the use of semiconductor elements embodied in a wafer construction.
  • a further development of the invention consists in that a tensioning device is placed on the outward-facing end of the main contact, the main contact being non-rotatably clamped between an insulated base plate and an electrically conductive intermediate plate, and the semiconductor element being between the electrically conductive one Intermediate plate and an electrically conductive clamping plate is tensioned, and that base plate and intermediate plate have bores aligned on both sides of the main contact for receiving screw connections consisting of screws and nuts, and that intermediate plate and clamping plate have bores aligned on both sides of the semiconductor element for receiving insulated inserts consisting of screws and Have nuts of existing screw connections.
  • An advantage of this structure is the simple retrofittability, which requires little downtime of single-column scissor disconnectors that are already in operation.
  • the base plate on the side of the main contact facing the auxiliary contact has a projection on which the outward end of the auxiliary contact can be fixed, and that the electrically conductive connection between the anode or cathode of the semiconductor elements and the respectively associated one Auxiliary contact is carried out by means of an electrically conductive connecting piece, preferably a copper cable, the connecting piece conductively connecting the clamping plate to the auxiliary contact.
  • a special embodiment of the invention provides for the semiconductor element to be installed in the shielding ball.
  • the shielding ball which acts as a Faraday cage, effectively remedies the strong electromagnetic fields occurring in the area of busbars. These fields could interfere with the very sensitive PN transitions of the semiconductor element or even put them out of operation.
  • the shielding ball is hollow and consists of two parts, which are preferably connected with screw connections.
  • a special development of the invention consists in that a clamping device is provided in the lower shielding ball half for fixing the semiconductor element, and that the lower shielding ball half is screwed into the upper end of the main contact.
  • the advantage of this development is that the conductive connection between the semiconductor element, shielding ball and main contact can be carried out in a simple and contact-safe manner.
  • the contact between the semiconductor element and the auxiliary contact takes place via a contact piece which is connected to the conductive clamping plate, the conductive clamping plate being pressed against the contact surface of the semiconductor element by means of an insulating piece, clamping springs and two insulated clamping bolts.
  • This feature has the advantage that only two simply designed elements are required for contacting between the semiconductor element and the auxiliary contact, as a result of which the number of connections of current-carrying parts is kept low. This results in an increase in Operational reliability and a low overall contact resistance. Another advantage is that the simple connecting elements are inexpensive.
  • the insulating piece has a spherical shape on the side facing away from the semiconductor.
  • the insulating piece takes over the function of the spherical cap normally used for clamping semiconductor elements, as a result of which the semiconductor element is clamped more easily and more reliably.
  • the contact piece between the lower and upper shielding ball part is led out in an isolated manner and connected to the upper end of the auxiliary contact.
  • This embodiment of the invention offers the advantage that, due to the insulation of the contact piece, the voltage distances to be maintained from the main contact can be kept low.
  • Another embodiment of the invention provides that the lower half of the shielding ball has a recess at the point where the contact piece is led out.
  • the small recess held in the lower half of the shielding ball is a very complex and thus expensive implementation unnecessary, and the recess does not interfere with the function of the Faraday cage.
  • FIG. 1 shows a basic illustration of the single-column scissor-type circuit breaker according to the invention, while in FIG. 2 a clamping device for the assembly of a semiconductor element in disk construction is shown. 3 the principle of the single column
  • the single column scissor disconnector is shown in the open position.
  • the diodes 5, 6 are arranged such that the diode 5 with the anode on the main contact 1 and with the cathode on the auxiliary contact 3, but the diode 6 with the cathode is connected to the main contact 2 and with the anode to the auxiliary contact 4.
  • the disconnector When the disconnector is opened, the main contacts 1, 2 first lift off from a mating contact piece 7. The current now flows from the mating contact piece 7, depending on the half-wave, via the auxiliary contact 3 or 4 and the associated diode 5 or 6 to the main contact 1 or 2 Formation of an arc, which depending on the half-wave between
  • FIG. 2 shows the schematic representation of a clamping device for the mounting and contacting of a semiconductor element 5 on a main contact 1.
  • An electrically conductive intermediate plate 28 is mounted on the main contact 1 by means of the clamping bolts 26 and an insulated base plate 27.
  • the auxiliary contact 3 is mechanically fastened on a projection 32 of the insulated base plate 27.
  • the electrically conductive intermediate plate 28 also takes over the contacting between the main contact 1 and the semiconductor element 5.
  • the semiconductor element 5 is then also attached to this electrically conductive intermediate plate 28 conductive clamping plate 29 and the calotte and tension springs, not shown, mounted by means of insulated clamping bolts 30.
  • the contact between the auxiliary contact 3 and the semiconductor element 5 is made via the electrically conductive clamping plate 29, to the projection 33 of which a conductive connecting piece 31, preferably a copper cable, is connected, the other end of which is conductively connected to the auxiliary contact 3.
  • FIG. 3 is a highly schematic representation of the single-column scissor-type isolating switch according to the invention, with the difference that the semiconductor element 5, 6 is installed in the respectively assigned shielding ball 9, 10.
  • This special development compared to FIG. 1 offers additional advantages, such as protection of the semiconductor element 5, 6 against weather influences and electromagnetic Fields caused by the nearby busbars.
  • a shielding ball consisting of two parts of the same size is used.
  • the semiconductor element 5 is installed in the lower shielding ball half 22 by means of a clamping device, the lower shielding ball half 22 being screwed into the upper end of the main contact 1.
  • the conductive connection between semiconductor element 5, shielding ball and main contact 1 is thus established.
  • the contact between the semiconductor element 5 and the auxiliary contact 3 takes place via a contact piece 25 which is connected to the conductive clamping plate 16.
  • the conductive clamping plate 16 is pressed onto the contact surface of the semiconductor element 5 by means of an insulating piece 17, the tension springs 18 and two insulated clamping bolts 19.
  • the contact piece 25 is isolated between the two shielding ball halves 22 and 23, which are connected by screw connections.
  • the lower shielding ball half 22 has a recess at the point where the contact piece 25 is brought out. As a result, the contact piece 25 is then connected to the auxiliary contact, not shown here.

Landscapes

  • Die Bonding (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

L'objet de l'invention est d'obtenir un interrupteur-séparateur avec une durée d'arc réduite. Dans les interrupteurs-séparateurs à pantographe à isolateur support unique décrits, les contacts principaux (1, 2) s'ouvrent en premier, puis les contacts auxiliaires (3, 4). Une diode (5, 6) est disposée entre chaque contact principal (1, 2) et son contact auxiliaire associé (3, 4). La diode (5) est reliée par l'anode au contact principal (1) et par la cathode au contact auxiliaire (3), alors que la diode (6) est reliée par la cathode au contact principal (2) et par l'anode au contact auxiliaire (4). Après l'ouverture des contacts auxiliaires (3, 4), un arc électrique peut se former dont la position entre les contacts correspondants dépend de la demi-onde. L'arc se rompt ensuite lors du prochain passage par zéro de la tension. L'invention permet pour la première fois d'assurer la rupture de l'arc électrique lors du prochain passage par zéro de la tension indépendamment de l'intensité et de la fréquence des sollicitations, ainsi que de l'influence de l'environnement et des intempéries.
PCT/AT1991/000108 1990-10-12 1991-10-10 Interrupteur-separateur WO1992007373A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ATA2062/90 1990-10-12
AT206290A ATA206290A (de) 1990-10-12 1990-10-12 Trennschalter
ATA2187/90 1990-10-30
AT218790A ATA218790A (de) 1990-10-30 1990-10-30 Hochspannungstrennschalter

Publications (1)

Publication Number Publication Date
WO1992007373A1 true WO1992007373A1 (fr) 1992-04-30

Family

ID=25597552

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1991/000108 WO1992007373A1 (fr) 1990-10-12 1991-10-10 Interrupteur-separateur

Country Status (2)

Country Link
CN (1) CN1061488A (fr)
WO (1) WO1992007373A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104282479A (zh) * 2014-10-27 2015-01-14 湖南长高高压开关集团股份公司 用于单柱垂直伸缩式隔离开关的中间关节结构及隔离开关

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2638877T3 (es) * 2012-03-06 2017-10-24 Abb Technology Ag Disyuntor de salto de arco y procedimiento de interrupción de circuito
DE102016214372B4 (de) * 2016-08-03 2020-01-09 Siemens Aktiengesellschaft Kontaktarm für Einsäulentrennschalter und dessen Verwendung
EP3494588B1 (fr) * 2016-08-05 2024-04-10 Hitachi Energy Ltd Sectionneur et procédé de fabrication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE638981C (de) * 1932-07-05 1936-11-26 Siemens Schuckertwerke Akt Ges Anordnung zum Ausschalten von Wechselstromkreisen
DE1439250A1 (de) * 1963-06-25 1968-11-28 Siemens Ag Hochleistungsgleichrichter auf Halbleiterbasis fuer Momentanbelastung
FR2436489A1 (fr) * 1978-09-14 1980-04-11 Bbc Brown Boveri & Cie Sectionneur, en particulier sectionneur pantographe sur colonne unique
DE3210155A1 (de) * 1982-03-19 1983-09-29 Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen Trennschalter, insbesondere einsaeulen-scherentrennschalter
US4459629A (en) * 1981-11-23 1984-07-10 General Electric Company Electric circuit breaker utilizing semiconductor diodes for facilitating interruption

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE638981C (de) * 1932-07-05 1936-11-26 Siemens Schuckertwerke Akt Ges Anordnung zum Ausschalten von Wechselstromkreisen
DE1439250A1 (de) * 1963-06-25 1968-11-28 Siemens Ag Hochleistungsgleichrichter auf Halbleiterbasis fuer Momentanbelastung
FR2436489A1 (fr) * 1978-09-14 1980-04-11 Bbc Brown Boveri & Cie Sectionneur, en particulier sectionneur pantographe sur colonne unique
US4459629A (en) * 1981-11-23 1984-07-10 General Electric Company Electric circuit breaker utilizing semiconductor diodes for facilitating interruption
DE3210155A1 (de) * 1982-03-19 1983-09-29 Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen Trennschalter, insbesondere einsaeulen-scherentrennschalter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104282479A (zh) * 2014-10-27 2015-01-14 湖南长高高压开关集团股份公司 用于单柱垂直伸缩式隔离开关的中间关节结构及隔离开关

Also Published As

Publication number Publication date
CN1061488A (zh) 1992-05-27

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