EP1992003A1 - Dispositif de coupure en surintensité - Google Patents

Dispositif de coupure en surintensité

Info

Publication number
EP1992003A1
EP1992003A1 EP06706014A EP06706014A EP1992003A1 EP 1992003 A1 EP1992003 A1 EP 1992003A1 EP 06706014 A EP06706014 A EP 06706014A EP 06706014 A EP06706014 A EP 06706014A EP 1992003 A1 EP1992003 A1 EP 1992003A1
Authority
EP
European Patent Office
Prior art keywords
current
switching device
state
overcurrent switching
electronic module
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.)
Granted
Application number
EP06706014A
Other languages
German (de)
English (en)
Other versions
EP1992003B1 (fr
Inventor
Jörg DORN
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 AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP1992003A1 publication Critical patent/EP1992003A1/fr
Application granted granted Critical
Publication of EP1992003B1 publication Critical patent/EP1992003B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
    • H01H71/43—Electrodynamic release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H79/00—Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/222—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion

Definitions

  • the invention relates to an overcurrent switching device for medium or high voltage applications with current detection means for transferring a contact system assigned to them when a threshold current is exceeded from a first state to a second state.
  • the deformable section is deformed when a threshold current is exceeded such that a contact system is transferred from a first state to a second state.
  • the deformable portion is also used here to form the contact system by forming the contact system together with a contact part.
  • Object of the present invention is to provide an overcurrent switching device that can be flexibly and precisely designed according to the particular requirements.
  • actuating means are arranged downstream of the current detection means located in a first current branch via coupling means, which actuating means are designed to transfer the contact system located in a second current branch from the first to the second condition.
  • An essential advantage of the overcurrent switching device according to the invention is that in her the current detection means and the coupling and actuating means assemblies or elements represent for themselves, and thus can be produced by itself and dimensioned accordingly; This also applies to the contact system, because it forms a system for itself, act on the actuating means. All this allows a precise adjustment and a large adjustment range of the threshold current, in which the contact system can be transferred from its first to its second state.
  • the contact system can advantageously be used flexibly in that the first state of the contact system can be the open state and the second state can be the closed state of the contact system, or vice versa, so that in a simple manner depending on the respective requirements an opening or a closing over - Stror ⁇ schaltvoriques is formed.
  • the advantageous possibility is given to effect a switching operation in the second current branch in the event of an overcurrent in the first current branch.
  • the current detection means comprise two mutually parallel conductor rail sections in which the current is guided in opposite directions and of which at least one section is deformable, wherein the deformable section can be transferred by exceeding the threshold current from a normal position to a working position.
  • an electromagnetic force acts in an advantageous manner between the parallel conductors with opposite current conduction, so that the deformable portion is deformed when a threshold current is exceeded by this force and transferred from a normal position to a working position.
  • the threshold current is simple and flexible adjustable over the deformability of the deformable section.
  • the coupling means comprise a blocking element fixedly connected to the deformable section.
  • a blocking element for example a retaining pin, is a simple way of coupling the current-detecting means with the actuating means.
  • the actuating means comprise a spring-loaded actuator having such a configuration that, in a blocking element in the normal position of the deformable portion, the actuating member is held in a cocked spring position and released in a working position of the deformable portion.
  • a spring-loaded actuator having such a configuration that, in a blocking element in the normal position of the deformable portion, the actuating member is held in a cocked spring position and released in a working position of the deformable portion.
  • the actuator may be designed in different ways, e.g. as a pestle.
  • the actuating member is a movable, by means of the spring tensionable carriage with a rigidly connected
  • Such a slide is particularly durable or releasable by the blocking element.
  • the contact system of a rigidly connected to the actuating means moving contact to
  • the mating contacts can both be configured as a fixed contacts.
  • Such a contact system can be converted in a simple manner by the actuating means from its first in its second state.
  • the current detection means comprise a coil surrounding the current-carrying connection conductor.
  • a coil By means of a coil, the detection of an overcurrent in a precise manner possible because a current flowing in the connecting conductor current in the coil, a voltage is induced, with which the actuating means are actuated in a simple manner.
  • the contact system comprises an electrical switch connected to the coil via the coupling means and the actuation means, which can be transferred from the first state to the second state when the threshold current is exceeded by a voltage induced in the coil.
  • An electrical switch advantageously has fast and precisely adjustable switching characteristics for transferring the contact system from the first to the second state, wherein the switch is configured such that it remains in this state after being transferred to the second state.
  • the electrical switch is a thyristor.
  • a thyristor is a precise electronic switching element as an electrical switch, which can be controlled directly in a simple manner by the voltage induced in the coil.
  • the electrical switch is an electromagnetically actuated switch. With an electromagnetically actuated switch controlled by the coil, precise and fast switching is made possible in a simple manner.
  • the actuating means comprise a control device for the electrical switch.
  • a control device is advantageous for a precise adjustment of the threshold current to be detected.
  • the invention further relates to a bridging device for an electronic module, as it is the above-mentioned prior international patent application PCT / DE 2005/001147 entappelbar, and has set itself the task of such a bridging device for an electronic module so educate that they have a flexible structure with precisely adjustable threshold current.
  • a bridging device for an electronic module with an overcurrent switching device in one of the embodiments described above is used to achieve this object, the current detection means for transferring the contact system assigned to it from a first state when the threshold current in the electronic module has been exceeded wherein the electronic module is connected to a circuit arrangement, in a second state in which the electronic module is bridged in the circuit arrangement, are formed.
  • This bridging device advantageously allows a flexible construction with precisely adjustable threshold current.
  • the bridging device thus forms an advantageous application of the overcurrent switching device according to the invention and can be used, for example, advantageously for bridging an electric current.
  • ronikmoduls according to German Patent Application DE 101 03 031 Al use.
  • the contact system is conductively connected to the terminal of the electronic module.
  • the current detection means detect the current of the electronic module.
  • FIG. 1 shows a schematic representation of an inventive overcurrent switching device in a first embodiment of a lockup device according to a first embodiment
  • FIG. 2 shows a schematic representation of an inventive overcurrent switching device in a second
  • Embodiment of a lockup device according to a second embodiment.
  • the circuit unit 8 comprises schematically illustrated electronic components 9, for example a plurality of switching elements such as IGBTs, diodes and an intermediate circuit capacitor of an inverter, which are connected to each other via current detection means in the form of connecting conductors 10, 11 and other connections (not shown) (compare the circuit unit the above-mentioned German patent application DE 101 03 031 Al).
  • the connecting conductors 10 and 11 are arranged in the circuit unit 8 such that an overcurrent occurring in the event of a fault flows through these connecting conductors 10 and 11.
  • the connecting conductors 10 and 11 are designed as busbars and connected to one another at one end, so that a current flowing in the circuit unit 8 current over the busbars 10 and 11 is guided in opposite directions.
  • Conductor rail 11 which is designed as a deformable busbar, coupling means 12 and 13 in the form of a retaining pin 12 made of an insulating material as a blocking element 12 which extends through a recess 13 in the bus bar 10 therethrough.
  • Coupling means 12, 13 are as actuating means 14, 15 and 18, a movable carriage 14, which is blocked by the retaining pin 12 and is biased by a spring 15 against an insulating body 16 of the electronic module, rearranged.
  • actuating means 14, 15 and 18 a movable carriage 14 which is blocked by the retaining pin 12 and is biased by a spring 15 against an insulating body 16 of the electronic module, rearranged.
  • Through a recess 17 of the insulating body 16 extends through a guide rod 18 of the carriage 14, at the end of a moving contact 19 is arranged, which forms a contact system 20 together with the first fixed contact 6 and the second fixed contact 7.
  • the state of the device shown in FIG. 1 corresponds to the normal operating state of the electronic module 1 in which normal operating currents flow within the electronic module 1.
  • a fault for example by a Short circuit within the electronic module 1 or a wrong control of a switching element, can flow through the discharge of the capacitor of the circuit unit 8, a significantly higher current than the usual operating current in the electronic module nikmodul. Due to the opposing leadership of the current through the busbars 10 and 11 is formed between these due to electromagnetic interaction, a force which pushes the busbars 10 and 11, while the deformable busbar 11 is deformed such that the fixed to the busbar 11 associated retaining pin 12 in the direction of the movement arrow A moves and releases the carriage 14.
  • a short-circuit current in the electronic module 1 thus causes a closure of the contact system 20, so that between the terminals 2 and 3 of the electronic module 1 via the conductors 4 and 5 and the fixed contacts 6 and 7 and the moving contact 19, the remaining components of the electronic module 1 are bridged.
  • a bridging of electronic modules in a circuit arrangement of a plurality of modules, for example in a series connection, is particularly necessary if the functionality of the circuit arrangement is to be retained in the event of the failure of a single electronic module due to a malfunction.
  • FIG. 2 shows a further exemplary embodiment of an overcurrent switching device US2 of a bridging device UB2 in an electronic module 21.
  • Terminals 22 and 23 of the electronic module 21 are connected via conductors 24 and 25 with contacts 26 and 27 and connected to a circuit unit 28 with schematically represented electronic components 29, for example, figuratively not shown switching elements such as IGBTs, capacitors and diodes.
  • Connecting conductors 30 and 31 and other connections not shown in the figures are provided for connecting the components 29.
  • the connection conductors 30 and 31 are arranged in the circuit unit 28 such that an overcurrent occurring in the event of a fault flows through these connection conductors 30 and 31.
  • the connecting conductors 30 and 31 are connected together at one end and together with a coil 32 current detection means 30, 31, 32.
  • the coil 32 surrounds a portion of the connecting conductors 30, 31 and is via coupling means 33 and 34 in the form of connecting lines 33 and 34 coupled to actuating means 36 and 37.
  • the actuating means 36, 37 comprise a control device 36 with a control connection 37 for controlling an electrical switch 38, which forms the contact system 39 with the contacts 26 and 27.
  • a short-circuit current driven by the capacitor of the circuit unit effects an induction voltage in the coil 32, which is compared in the control device 36 with a threshold value. If the induction voltage is above the threshold value, then the switch 38 is closed via the control connection 37, so that the contact system 39 is closed off of the contacts 26, 27 and the switch 38, via the connection terminals 22, 23 and the conductors 24, 25 the remaining elements of the electronic module 21 are bridged.
  • the switch 38 is designed such that it after transferring to the second state, in the embodiment of the closed state, in remains in this state, even if after a decay of the short-circuit current, the induction voltage of the coil is no longer applied.
  • a bridging of electronic modules in a circuit arrangement of several modules, for example a series circuit, is particularly necessary if the functionality of the series circuit is to be maintained in the event of failure of a single electronic module due to a malfunction.
  • the switch 38 can be designed as a thyristor or E- lektromagnet, the control depending on the desired precision either directly through the. in the coil 32 induced voltage can take place or via the control device 36, which may be embodied for example as a simple trigger circuit.

Abstract

Afin de réaliser un dispositif de coupure en surintensité pour des installations à moyenne et haute tension avec des moyens de détection de courant pour le passage d'un système de contact étant relié aux moyens de détection lors du dépassement d'un courant de seuil d'un premier état à un second état, le dispositif présentant une grande précision des propriétés de commutation, il est prévu selon l'invention que des moyens d'actionnement soient subordonnés aux moyens de détection de courant disposés dans une première branche de courant via un moyen de couplage, lesdits moyens d'actionnement servant au passage du système de contact disposé dans une deuxième branche de courant du premier état au deuxième état.
EP06706014.5A 2006-02-23 2006-02-23 Dispositif de coupure en surintensité Not-in-force EP1992003B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2006/000345 WO2007095874A1 (fr) 2006-02-23 2006-02-23 Dispositif de coupure en surintensité

Publications (2)

Publication Number Publication Date
EP1992003A1 true EP1992003A1 (fr) 2008-11-19
EP1992003B1 EP1992003B1 (fr) 2013-11-27

Family

ID=37031076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06706014.5A Not-in-force EP1992003B1 (fr) 2006-02-23 2006-02-23 Dispositif de coupure en surintensité

Country Status (6)

Country Link
US (1) US7936548B2 (fr)
EP (1) EP1992003B1 (fr)
JP (1) JP4942771B2 (fr)
CA (1) CA2643129C (fr)
DE (1) DE112006003862A5 (fr)
WO (1) WO2007095874A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103635998B (zh) 2011-06-21 2016-08-17 Abb技术有限公司 具有接触机构的功率半导体壳体
RU2642548C2 (ru) * 2013-12-17 2018-01-25 Сименс Акциенгезелльшафт Защитный электронный модуль для преобразователя hvdc

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DE1047915B (de) 1955-08-18 1958-12-31 Siemens Ag Hochspannungs-Schnellschalter mit Sperrmagnetausloesung, insbesondere UEberbrueckungsschalter zum Schutz von Reihenkondensatoren
US3215896A (en) * 1962-10-04 1965-11-02 Gen Electric Fast response overload protection circuit
NO118930B (fr) * 1965-04-20 1970-03-02 Ericsson Telefon Ab L M
DE2360037A1 (de) * 1973-12-01 1975-06-12 Danfoss As Sicherheitsschaltung fuer ein elektrisches geraet
FR2426973A1 (fr) * 1978-05-23 1979-12-21 Laprom Corp Nv Disjoncteur de courant de fuite
JPS59156347A (ja) * 1983-02-26 1984-09-05 オ−ジ−技研株式会社 部分浴治療装置
JPS60130012A (ja) * 1983-12-16 1985-07-11 株式会社リコー 安全装置
DE3544650A1 (de) * 1984-12-20 1986-06-26 General Electric Co., Schenectady, N.Y. Hochgeschwindigkeits-kontakttreiber fuer einen elektrischen schalter
US4667071A (en) * 1985-08-30 1987-05-19 General Electric Company Low voltage vacuum circuit interrupter
EP0303698A4 (fr) * 1987-02-24 1990-03-27 Vnii Pk I Avtomatizi Interrupteur limiteur de courant.
FR2651915B1 (fr) * 1989-09-13 1991-11-08 Merlin Gerin Disjoncteur statique ultra-rapide a isolement galvanique.
IT1303664B1 (it) * 1998-12-24 2001-02-21 Abb Ricerca Spa Circuito elettronico di pilotaggio per attuatore bistabileattivato da piezoelettrici,particolarmente per dispositivi
DE10002870A1 (de) * 2000-01-24 2001-08-23 Abb Research Ltd Vorrichtung zum Begrenzen eines Stromes
JP3737372B2 (ja) * 2001-02-26 2006-01-18 株式会社日立製作所 変流器入力型電源装置
US6728085B2 (en) * 2001-05-21 2004-04-27 Eaton Corporation Circuit breaker with shunt
DE10349907A1 (de) 2003-10-25 2005-05-25 Abb Patent Gmbh Elektrischer Leitungsschutzschalter

Non-Patent Citations (1)

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Title
See references of WO2007095874A1 *

Also Published As

Publication number Publication date
US20090257165A1 (en) 2009-10-15
DE112006003862A5 (de) 2009-01-29
US7936548B2 (en) 2011-05-03
WO2007095874A1 (fr) 2007-08-30
CA2643129C (fr) 2014-07-22
JP2009527878A (ja) 2009-07-30
JP4942771B2 (ja) 2012-05-30
EP1992003B1 (fr) 2013-11-27
CA2643129A1 (fr) 2007-08-30

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