EP3245697A1 - Procédé et dispositif de suppression d'un arc électrique dans un système polyphasé - Google Patents

Procédé et dispositif de suppression d'un arc électrique dans un système polyphasé

Info

Publication number
EP3245697A1
EP3245697A1 EP16700436.5A EP16700436A EP3245697A1 EP 3245697 A1 EP3245697 A1 EP 3245697A1 EP 16700436 A EP16700436 A EP 16700436A EP 3245697 A1 EP3245697 A1 EP 3245697A1
Authority
EP
European Patent Office
Prior art keywords
switches
arc
phases
detected
controller
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Withdrawn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
EP16700436.5A
Other languages
German (de)
English (en)
Inventor
Wolfgang Hauer
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.)
Eaton Intelligent Power Ltd
Original Assignee
Eaton Industries Austria GmbH
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 Eaton Industries Austria GmbH filed Critical Eaton Industries Austria GmbH
Publication of EP3245697A1 publication Critical patent/EP3245697A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/065—Means for detecting or reacting to mechanical or electrical defects
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
    • H02H1/0015—Using arc detectors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems

Definitions

  • the invention relates to a method for extinguishing an arc in a
  • Multi-phase system in which at least one short-circuit switch is closed when an arc is detected.
  • the invention relates to a device for extinguishing an arc in a polyphase system by means of a plurality of switches, which are connected between the phases of the polyphase system such that a short circuit path between phases can be switched.
  • Such a method and apparatus are known in principle and are used, for example, in electrical installations, in order to protect people and / or the plant itself against the destructive effects of a short-circuited arc or at least to mitigate its effects. For example, animals or even
  • dropping tool as well as (damp) dirt reduce the insulation or the spark gap between two conductors at different voltage potential such that such an arc is formed. Due to the sometimes very high resulting currents may cause violent explosions due to the heating up in a short time air.
  • This object is achieved by a method of the type mentioned, in which with the closing of the switch, a short circuit is generated only between those phases between which an arc is detected.
  • the object of the invention is also achieved with a device of the type mentioned, in which
  • the switches are individually controllable and
  • the presented device can basically be freely installed on an electrical system, but it is advantageous if it is installed in a control cabinet.
  • switches are connected in a triangle. In this way, only a single switch must be closed to extinguish an arc burning between two phases. With two arcs between each two phases only two switches must be closed.
  • the device has a plurality of current sensors connected to the control, one of which is assigned to one respective phase is. Similarly, it is advantageous if an arc is detected with the aid of a plurality of current sensors, one of which is assigned to a respective one phase. In this way, an arc can be accurately located, that is, it can be determined between which phases an arc burns. It is also advantageous if the device is one with the controller
  • an arc is detected by means of a light sensor, in particular with a single light sensor.
  • a light sensor With the aid of a light sensor, it can be determined whether there is an extraordinary bright light in the electrical system (for example in a control cabinet) which can be assigned to an electric arc. In this way, the probability of false triggering can be reduced.
  • the device has a plurality of light sensors connected to the control, of which one each is associated with one phase. Similarly, it is beneficial to use an arc with the help of several
  • Light sensors is detected, one of which is assigned to a respective one phase. In this way, an arc can also be accurately located, that is, it can be determined between which phases an arc burns.
  • the housing may also have all the necessary connections for the control, so for example, connections for current sensors, light sensors and other controlled switches (for example, the device upstream NC).
  • Fig. 1 shows an exemplary apparatus for extinguishing an arc in one
  • Fig. 1 shows an apparatus 1 for extinguishing an arc X in one
  • Multi-phase system 2 with the aid of several individually controllable switch S1 ..S3, which are connected between the phases L1 ..L3 of the polyphase system 2 such that a short-circuit path between phases L1 ..L3 is switchable.
  • the switches S1 ..S3 are connected via the connecting rail 3 in the star.
  • the star point is free in this example, but it could also be connected to a (not shown) neutral conductor. It would also be conceivable, however, that the switches S1 ..S3 are connected in a triangle.
  • the switches S1 ..S3 are formed in the example as a semiconductor switch. Specifically, each switch S1 ..S3 has two anti-parallel arranged thyristors, with which both the positive and the negative half-wave of an alternating current
  • switches S1 ..S3 could also be constructed of other semiconductors, for example of IGBTs (Insulated Gate Bipolar Transistor), or else designed as (mechanical) switching contacts.
  • IGBTs Insulated Gate Bipolar Transistor
  • the device 1 has one with the switches S1 ..S3, the device 1 has one with the switches S1 ..S3, the device 1 has one with the switches S1 ..S3, the device 1 has one with the switches S1 ..S3, the device 1 has one with the switches S1 ..S3, the device 1 has one with the switches S1 ..S3, the device 1 has one with the switches S1 ..S3, the device 1 has one with the
  • Switches S1 ..S3 connected control 4 which is adapted to generate a short circuit only between those phases L1 ..L3, between which an arc X is detected.
  • Switch S1 ..S3 in particular all switches S1 ..S3, in a common
  • Housing a short-circuit switch may be arranged.
  • the Control 4 may be arranged in the common housing.
  • the components mentioned can also be accommodated in separate housings.
  • a plurality of current sensors 11... 13 connected to the controller 4 are provided, of which one each is assigned to one phase L 1 .L 3.
  • a light sensor 5 connected to the controller 4 is also provided. In the example shown specifically, only a single light sensor 5 connected to the controller 5 is provided. However, it is also conceivable that the arrangement has several connected to the controller 4
  • the current sensors 11 and 12 measure one
  • Short-circuit current which is detected by the controller 4.
  • the controller 4 controls the two switches S1 and S2 to extinguish the arc X.
  • the switch S3 remains open. For two arcs X between each two phases L1 ..L3 or arcs between all three phases L1 ..L2, however, all switches S1 ..S3 would be closed.
  • this phenomenon should be taken into account, so that the switch is not destroyed by overvoltage.
  • the upstream switches S4..S6 are opened in the event of a fault. This can, as shown in the figure, be taken over by the controller 4, or the switches S4..S6 are opened in case of overcurrent by a self-sufficient controller.
  • the switches S4..S6 can in particular as
  • Overcurrent protection switch may be formed.
  • the downstream switches S7..S9 can also be opened. This is particularly useful if there are memories in the downstream network with large amounts of electrical energy (for example, capacitances, inductances, accumulators), which are high even when the switches S4..S6 are open
  • Switches S1 ..S3 an all-pole short circuit switched.

Landscapes

  • Power Conversion In General (AREA)

Abstract

L'invention concerne un dispositif (1) permettant de supprimer un arc électrique (X) dans un système polyphasé (2) à l'aide de plusieurs commutateurs (S1..S3), au moyen desquels un chemin de court-circuit peut être commuté entre les phases (L1..L3). Les commutateurs (S1..S3) peuvent être commandés individuellement et le dispositif (1) comprend une commande (4) reliée aux commutateurs (S1..S3), qui est conçue pour produire un court-circuit uniquement entre les phases (L1..L3) entre lesquelles un arc électrique (X) est détecté. En outre, l'invention concerne un procédé permettant de supprimer un arc électrique (X), selon lequel un court-circuit n'est produit qu'entre les phases (L1..L3) entre lesquelles un arc électrique (X) est détecté.
EP16700436.5A 2015-01-13 2016-01-12 Procédé et dispositif de suppression d'un arc électrique dans un système polyphasé Withdrawn EP3245697A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015100448 2015-01-13
PCT/EP2016/050491 WO2016113270A1 (fr) 2015-01-13 2016-01-12 Procédé et dispositif de suppression d'un arc électrique dans un système polyphasé

Publications (1)

Publication Number Publication Date
EP3245697A1 true EP3245697A1 (fr) 2017-11-22

Family

ID=55129857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16700436.5A Withdrawn EP3245697A1 (fr) 2015-01-13 2016-01-12 Procédé et dispositif de suppression d'un arc électrique dans un système polyphasé

Country Status (2)

Country Link
EP (1) EP3245697A1 (fr)
WO (1) WO2016113270A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240332952A1 (en) * 2021-06-29 2024-10-03 Siemens Aktiengesellschaft Short-circuiting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1236595A (en) * 1911-03-29 1917-08-14 Lloyd C Nicholson Protective system for electrical transmission-lines.
DE4438593A1 (de) * 1994-10-28 1996-05-02 Kloeckner Moeller Gmbh Thyristor-Kurzschließer und Verfahren zum Löschen von Störlichtbögen in Schaltanlagen zur Verteilung elektrischer Energie, insbesondere Niederspannungs-Schaltanlagen
US20130194702A1 (en) * 2012-01-30 2013-08-01 General Electric Company Arc control in a fuse protected system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006024991A1 (de) * 2006-05-30 2007-12-06 Abb Technology Ag Verfahren zur Löschung eines Störlichtbogens innerhalb einer Mittel- und Hochspannungsschaltanlage, sowie Kurzschlusseinrichtung selbst
DE102006030671B4 (de) * 2006-07-04 2008-10-02 Moeller Gmbh Schutzschalter-Kurzschließer-Kombination

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1236595A (en) * 1911-03-29 1917-08-14 Lloyd C Nicholson Protective system for electrical transmission-lines.
DE4438593A1 (de) * 1994-10-28 1996-05-02 Kloeckner Moeller Gmbh Thyristor-Kurzschließer und Verfahren zum Löschen von Störlichtbögen in Schaltanlagen zur Verteilung elektrischer Energie, insbesondere Niederspannungs-Schaltanlagen
US20130194702A1 (en) * 2012-01-30 2013-08-01 General Electric Company Arc control in a fuse protected system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016113270A1 *

Also Published As

Publication number Publication date
WO2016113270A1 (fr) 2016-07-21

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