EP1226596B1 - Kompakt dreipoliges elektrisches schaltfeld für elektrische stationen - Google Patents

Kompakt dreipoliges elektrisches schaltfeld für elektrische stationen Download PDF

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Publication number
EP1226596B1
EP1226596B1 EP00979834A EP00979834A EP1226596B1 EP 1226596 B1 EP1226596 B1 EP 1226596B1 EP 00979834 A EP00979834 A EP 00979834A EP 00979834 A EP00979834 A EP 00979834A EP 1226596 B1 EP1226596 B1 EP 1226596B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
pole apparatus
isolating device
feeder
pole
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.)
Expired - Lifetime
Application number
EP00979834A
Other languages
English (en)
French (fr)
Other versions
EP1226596A1 (de
Inventor
Alberto Vaghini
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.)
Grid Solutions SpA
Original Assignee
Vei Power Distribution SpA
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 Vei Power Distribution SpA filed Critical Vei Power Distribution SpA
Publication of EP1226596A1 publication Critical patent/EP1226596A1/de
Application granted granted Critical
Publication of EP1226596B1 publication Critical patent/EP1226596B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H2009/0292—Transparent window or opening, e.g. for allowing visual inspection of contact position or contact condition
    • 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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/022—Details particular to three-phase circuit breakers
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators

Definitions

  • the present invention refers to a compact-structure three-pole apparatus for electric stations, in particular medium-voltage ones.
  • the isolator and circuit-breaker devices present in medium-voltage electric stations comprise a circuit breaker which enables disconnection of the direct line for supplying the loads, a line-isolating switch, connected in series to the feeder, which enables physical interruption of the line (for instance, by means of a mechanical control from outside) after the circuit breaker has opened the circuit, so as to ensure physical separation of the power busbars from the devices set downstream therefrom, and an earthing switch which can be operated from outside and is able to connect the line directed to user loads in order to prevent further risks due, for example, to discharges or induced currents.
  • a compact-structure three-pole apparatus having the above-mentioned features and forming the base for the pre-characterising part of claim 1 is known, for example from DE 4 445 172-A.
  • the movable parts which disconnect the live line and which thus give rise to the formation of an electric arc upon actuation mainly operate with insulation in air and consequently are subject to more or less serious oxidation and degradation, according to the environmental conditions and may give rise to electric arcs.
  • the electric arc that is formed whenever these devices are operated also causes wearing-out of the contacts and degradation of the insulators on account of ionization phenomena.
  • the casing or switchboard that encloses known isolator and circuit-breaker devices has overall dimensions that it would be desirable to reduce.
  • the circuit breaker works in vacuum conditions or in a protective gas (for example, SF 6 ) atmosphere, and hence the switchboard usually comprises three devices (two isolating switches and one circuit breaker), with the inevitable consequences represented by considerable encumbrance in terms of the dimensions of the container and by the need for a large supply of gas for protecting all the devices.
  • a purpose of the present invention is therefore to overcome the problems mentioned above, and in particular to provide a three-pole device for electric stations which has an extremely compact structure and is designed to enclose, within decidedly reduced overall dimensions as compared to the known art, whatever is normally contained in an electric switchboard with busbar section-disconnector device, circuit breaker and earthing switch.
  • Another purpose of the present invention is to provide a three-pole apparatus for electric stations which has a compact structure and will guarantee, for the devices present inside, a longer electrical service life as compared to the one achieved by traditional apparatus.
  • a further purpose of the present invention is to provide a compact-structure three-pole apparatus for electric stations, which is particularly reliable, effective and safe and will guarantee a limited wearing-out of the parts over time as compared to the known art.
  • this type of compact apparatus with stainless steel casing encloses practically whatever is contained in an electric panel or switchboard, with an isolating switch, circuit breaker and earthing switch.
  • the isolating device which functions as line/earth changeover switch, is set in an environment protected by gas, in particular sulphur hexafluoride (SF 6 ), which also performs the dielectric function for the conductors located inside the casing itself.
  • gas in particular sulphur hexafluoride (SF 6 ), which also performs the dielectric function for the conductors located inside the casing itself.
  • a vacuum circuit breaker which is placed downstream of the isolating device, enables its use both as a line circuit breaker for protecting the line and as an earthing switch with closing capability.
  • An apparatus having decidedly reduced overall dimensions as compared to similar known apparatus, and one in which all those parts that are involved in the interruption of electric current and that, at the moment of actuation, generate an electric arc are sealed in a vacuum envelope in such a way that the protective gas does not undergo any degradation by contact with the electric arc, with consequent greater durability of the apparatus.
  • the movable parts which are operated once power supply is interrupted, are protected in a gas atmosphere, and this enables elimination of the phenomena of degradation of the conductors and insulators.
  • the configuration adopted makes it possible to eliminate an isolating device because the very function of the earthing switch is implemented in the busbar section-disconnector/changeover switch. In this way, a drastic reduction is obtained in the overall dimensions of the entire apparatus.
  • the number 20 designates a protective metal casing of the three-pole apparatus according to the present invention, usable in medium-voltage (MV) distribution systems for electric stations, in particular of a primary type.
  • MV medium-voltage
  • medium voltage in general a voltage that may be derived from the remote transformation of a high-voltage line, the said medium voltage being of the order of 10-20 kV, and in any case within the 1 kV to 52 kV range.
  • the casing 20 has a substantially parallelepipedal shape with vertical development and usually comprises three areas arranged transversely, and, in particular, at least one first, bottom, area 21, which houses the circuit-breaker and isolator devices of the apparatus according to the invention, a second, intermediate, area 22, where the power busbars are arranged to which the outputs to the loads are to be connected, and a top area 23, which has inside a number of compartments and service lines.
  • the bottom area 21 comprises, at the front, at least one door 24, hinged at the side, which has a first plate 25 identifying the electric line, a plate 26 representing the electric wiring diagram of the apparatus, and possibly a window which may be used by the user for viewing directly the position of the busbar section disconnectors and the earthing switch.
  • the three-pole isolating device 1 which is set inside the casing 20, in turn comprises a busbar section-disconnector and earthing-switch device 2 set inside each insulator 11, and a vacuum circuit breaker, designated by 3, enclosed inside a hermetically sealed container 33, preferably made of stainless steel and provided with appropriate contacts 4 arranged on the bottom for connection to the external lines.
  • the said busbar section-disconnector and earthing-switch device 2 is movable between one position, in which it connects the circuit breaker 3 to an electrical contact 5 connected to the medium-voltage or high-voltage feeder 6 ( Figure 4), and a position in which the circuit breaker 3 is connected to an earth contact 7.
  • the vacuum circuit breaker 3 may be equipped with mechanical control devices, such as levers and springs, or permanent-magnet devices, and in particular may include controls operated by springs with energy reserve, with or without motor and opening and closing coil, or else permanent-magnet controls (such as the one represented in Figures 6 and 7) used with opening and closing coil.
  • mechanical control devices such as levers and springs, or permanent-magnet devices
  • permanent-magnet devices such as the one represented in Figures 6 and 7
  • the magnetic actuator 12 comprises a solid reinforcement 13, made of solid steel, designed to increase the characteristics of the welding, a screen 32 for shielding the magnet from the reinforcement 13, at least one magnet 331 designed to supply the closing and opening force, a section 44 made of rolled iron, designed to reduce the current losses and improve the operating times, a set of coils 55, which supply the manoeuvring energy in each direction, a manoeuvring lever 66 for connection to the lever mechanisms of the circuit breaker 3, an auxiliary lever 77 for connection to the manual operating cam and to the auxiliary contacts, and a set of blocking supports 68 designed to guide the control.
  • the apparatus according to the present invention has been developed to increase the safety of the compartment, to facilitate commissioning manoeuvres, and to reduce the overall dimensions and the weight with respect to the dimensions and the weight of the compartments that are built using traditional technologies and that contain a busbar section-disconnector device, an earthing switch and a circuit breaker which are physically separate from one another.
  • the circuit breaker 3 is operated again to close the circuit, so connecting to earth 7 the line 8 leading to the load in order to be able to proceed to opening the cable compartment and enable execution of the required maintenance operations.
  • the circuit breaker 3 is first operated to open the circuit; next, the busbar section-disconnector and earthing switch device 2 is changed over onto the line contact 5, and then the circuit breaker 3 is operated to close the circuit.
  • the positions of the isolating device 2 and the circuit breaker 3 may be as follows:
  • control of the apparatus operates with two separate and mechanically interlocked shafts, one for the line/earth selector (represented by the controls 9 and 10) and one for the vacuum circuit breaker 3.
  • the mechanical interlock located on the manoeuvring shafts enables operation only in the correct sequence, unlike what takes place in compartments built using traditional technology, i.e., where the circuit breaker is separate from the isolating switch and the interlock between the two is performed by means of a key blocking mechanism.
  • a panel for containing the apparatus is as a whole obtained, which presents an overall width ranging between 375 mm and 750 mm and a depth of 900 mm, whereas at present the overall dimensions of a traditional panel with circuit breaker are 750 mm (width) by 1150 mm (depth). Furthermore, the weight of the panel is reduced to approximately 40-70% of a conventional panel.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Air Bags (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Support Of Aerials (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Linear Motors (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Push-Button Switches (AREA)

Claims (6)

  1. Kompakt dreipoliges elektrisches Schaltfeld für elektrische Stationen in einer Ausbildung, die eine Reihe von Isolatoren (11) umfaßt, die wenigstens einen sammelschienenleiterartigen Feldunterbrecher aufweisen, der dazu bestimmt ist, eine Verbindung mit der Stromzuleitung (6) herzustellen, und mit zumindest einem Leistungsschalter (3) und zumindest einem Erdungsschalter, wobei der Leistungsschalter (3) in einer Vakuumumhüllung abgedichtet angeordnet ist und in Reihe mit einer Umschaltisolationsvorrichtung (2) positioniert ist, welche beweglich zwischen einer ersten Stellung, in der diese den Leistungsschalter mit einem Kontakt (5) der Stromzuleitung (6) leitend verbindet, und einer zweiten Stellung, in der diese den Leistungsschalter (3) zu einem Erdungsschalter (7) verbindet, gelegen ist, dadurch gekennzeichnet, daß der Feldunterbrecher, der Leistungsschalter (3), der Erdungsschalter und die Umschaltisolationsvorrichtung (2) alle in einem Metallgehäuse (33) untergebracht sind, wobei das Gehäuse (33) mit Isolatoren (11) versehen ist, die den Eingangs- und Ausgangsspannungsanschlüssen des dreipoligen elektrischen Schaltfeldes zugeordnet sind.
  2. Dreipoliges elektrisches Schaltfeld nach Anspruch 1, dadurch gekennzelchnet, daß der Leistungsschalter (3) stromabwärts der Isolationsvorrichtung (2) angeschlossen ist und eine Nutzung sowohl als die Stromzuleitung (6) schützender Stromzuteitungsunterbrecher als auch als Erdungsschalter mit Schlleßvermögen ermöglicht.
  3. Dreipoliges elektrisches Schaltfeld nach Anspruch 1, dadurch gekennzeichnet, daß das Schutzgas bei leicht über atmosphärischem Druck liegendem Druck gehalten wird.
  4. Dreipoliges elektrisches Feld nach Anspruch 1, dadurch gekennzeichnet, daß die Isolationsvorrichtung (2) und der Leistungsschalter (3) von außerhalb des Schaltfeldes mit Hilfe von auf Manöverschäften (9, 10) der Isolationsvorrichtung (2) und des Leistungsschalter (3) reagierenden Steuervorrichtungen gesteuert werden.
  5. Dreipoliges elektrisches Schaltfeld gemäß Anspruch 1, dadurch gekennzeichnet, daß der Leistungsschalter (3) mit mechanischen Steuerungsvorrichtungen oder Dauermagnetvorrichtungen ausgestattet ist.
  6. Dreipoliges elektrisches Schaltfeld nach Anspruch 5, dadurch gekennzeichnet, daß die Dauermagnetvorrichtungen zumindest einen magnetischen Schalter (12) mit einer festen Verstärkung (13), einem Entstörschirm (32) zum Abschirmen eines eine Schließ- und Öffnungsfunktion ausführenden Magneten (331), einem aus gewalztem Eisen bestehendem sowie die Stromverluste minimierenden und die Betriebszeit optimierenden Feld (44), einer Reihe von die Energie in jede Richtung verteilenden Spulen (55), einem Manövrlerhebel (66) zur Verbindung mit dem Leistungsschalter (3), einem Hilfshebel (77) zur Verbindung mit von Hand gesteuerten Nocken oder mit Hilskontakten, und einer Reihe von Trägern (68) zum Blockleren und Führen der Steuervorrichtungen, umfassen..
EP00979834A 1999-11-03 2000-11-02 Kompakt dreipoliges elektrisches schaltfeld für elektrische stationen Expired - Lifetime EP1226596B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT1999PC000038A IT1309626B1 (it) 1999-11-03 1999-11-03 Dispositivo di sezionamento e interruzione, per cabine elettriche.
ITPC990038 1999-11-03
PCT/IB2000/001777 WO2001033593A1 (en) 1999-11-03 2000-11-02 Compact-structure three-pole apparatus for electric stations

Publications (2)

Publication Number Publication Date
EP1226596A1 EP1226596A1 (de) 2002-07-31
EP1226596B1 true EP1226596B1 (de) 2003-01-29

Family

ID=11389386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00979834A Expired - Lifetime EP1226596B1 (de) 1999-11-03 2000-11-02 Kompakt dreipoliges elektrisches schaltfeld für elektrische stationen

Country Status (8)

Country Link
EP (1) EP1226596B1 (de)
AT (1) ATE232012T1 (de)
AU (1) AU1721501A (de)
DE (1) DE60001334T2 (de)
ES (1) ES2190993T3 (de)
IT (1) IT1309626B1 (de)
PT (1) PT1226596E (de)
WO (1) WO2001033593A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1921646A2 (de) * 2006-11-10 2008-05-14 Vei T&D S.R.L. Dreipolige Vorrichtung für ein Medium oder Hochspannungskabine mit einer solchen dreipoligen Vorrichtung
CN101055813B (zh) * 2006-04-12 2012-02-01 阿雷瓦能源技术有限责任公司 用于中压或高压开关设备的三位开关
CN102714103A (zh) * 2009-12-29 2012-10-03 施耐德电气美国股份有限公司 在开关装置中使用的切断器/隔离器的远程驱动
EP2645395A1 (de) * 2012-03-26 2013-10-02 ABB Technology AG Elektrische Schaltvorrichtung und dazugehöriges elektrisches Gerät
EP2645378A1 (de) * 2012-03-26 2013-10-02 ABB Technology AG Elektrische Vorrichtung mit Isolatoren

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EP1538650B1 (de) 2003-12-02 2017-11-08 Schneider Electric Energy Manufacturing Italia S.r.l. Trenn/Lastschalter für elektrische Unterstationen
ITMI20041708A1 (it) 2004-09-07 2004-12-07 Vei Power Distrib S P A Dispositivo interuttore di manovra-sezionatore per cabine elettriche
ES2630405T3 (es) * 2006-11-30 2017-08-21 Abb Schweiz Ag Interruptor seccionador de media tensión aislado con gas
DE102007038898B3 (de) * 2007-08-13 2008-11-20 Siemens Ag Schalteranordnung für eine Schaltanlage
CN102231486B (zh) * 2011-06-17 2013-12-18 山东新科特电气有限公司 手车式永磁组合断路装置
CN103178466A (zh) * 2011-12-23 2013-06-26 青岛特锐德电气股份有限公司 组合开关电器气室
ES2770800T3 (es) * 2012-03-15 2020-07-03 Siemens Ag Dispositivo de conmutación, en particular un interruptor seccionador de cargas
CN103377849B (zh) * 2012-04-28 2016-08-17 西门子公司 三相共箱隔离接地开关
GB2521135B (en) * 2013-12-10 2017-01-18 Tavrida Electric Holding Ag Switching apparatus for electrical power systems
PL73334Y1 (pl) 2021-10-07 2024-02-05 Zpue Spolka Akcyjna Zespół wyłączniko-odłączniko-uziemnika
EP4254456A1 (de) 2022-04-01 2023-10-04 Boffetti S.p.A. Dreiphasiges elzitrizitätsverteilungsschaltfeld
IT202200006524A1 (it) * 2022-04-01 2023-10-01 Boffetti S P A Gruppo interruttore-sezionatore a ingombro ridotto
IT202200006548A1 (it) * 2022-04-01 2023-10-01 Boffetti S P A Quadro di distribuzione di energia elettrica trifase
IT202200006536A1 (it) 2022-04-01 2023-10-01 Boffetti S P A Gruppo di caricamento di un interruttore di un quadro elettrico

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101055813B (zh) * 2006-04-12 2012-02-01 阿雷瓦能源技术有限责任公司 用于中压或高压开关设备的三位开关
EP1921646A2 (de) * 2006-11-10 2008-05-14 Vei T&D S.R.L. Dreipolige Vorrichtung für ein Medium oder Hochspannungskabine mit einer solchen dreipoligen Vorrichtung
EP1921646A3 (de) * 2006-11-10 2009-11-11 Vei T&D S.R.L. Dreipolige Vorrichtung für ein Medium oder Hochspannungskabine mit einer solchen dreipoligen Vorrichtung
CN101226844B (zh) * 2006-11-10 2011-06-29 维益T&D有限责任公司 用于中压或高压配电柜的三极装置和包括此三极装置的相关配电柜
CN102714103A (zh) * 2009-12-29 2012-10-03 施耐德电气美国股份有限公司 在开关装置中使用的切断器/隔离器的远程驱动
CN102714103B (zh) * 2009-12-29 2015-06-03 施耐德电气美国股份有限公司 在电气开关装置中使用的切断器的机动驱动系统
EP2645395A1 (de) * 2012-03-26 2013-10-02 ABB Technology AG Elektrische Schaltvorrichtung und dazugehöriges elektrisches Gerät
EP2645378A1 (de) * 2012-03-26 2013-10-02 ABB Technology AG Elektrische Vorrichtung mit Isolatoren
EP2763152A1 (de) * 2012-03-26 2014-08-06 ABB Technology AG Elektrische Schaltvorrichtung und dazugehöriges elektrisches Gerät
US9251972B2 (en) 2012-03-26 2016-02-02 Abb Technology Ag Electric switching device and related electric apparatus
RU2615979C2 (ru) * 2012-03-26 2017-04-12 Абб Текнолоджи Аг Электрическое устройство с изоляторами

Also Published As

Publication number Publication date
ES2190993T3 (es) 2003-09-01
ATE232012T1 (de) 2003-02-15
AU1721501A (en) 2001-05-14
DE60001334T2 (de) 2004-03-25
IT1309626B1 (it) 2002-01-30
DE60001334D1 (de) 2003-03-06
ITPC990038A0 (it) 1999-11-03
EP1226596A1 (de) 2002-07-31
PT1226596E (pt) 2003-06-30
WO2001033593A1 (en) 2001-05-10
ITPC990038A1 (it) 2001-05-03

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