WO2009092509A1 - Dispositif de commande permettant le réenclenchement d'un disjoncteur différentiel de manière fiable - Google Patents

Dispositif de commande permettant le réenclenchement d'un disjoncteur différentiel de manière fiable Download PDF

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Publication number
WO2009092509A1
WO2009092509A1 PCT/EP2008/068359 EP2008068359W WO2009092509A1 WO 2009092509 A1 WO2009092509 A1 WO 2009092509A1 EP 2008068359 W EP2008068359 W EP 2008068359W WO 2009092509 A1 WO2009092509 A1 WO 2009092509A1
Authority
WO
WIPO (PCT)
Prior art keywords
control device
circuit breaker
conductor
conductors
load
Prior art date
Application number
PCT/EP2008/068359
Other languages
German (de)
English (en)
Inventor
Hans-Jürgen Huber
Ludwig Birkl
Johann Herrmann
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP08871403A priority Critical patent/EP2235805A1/fr
Priority to CN200880125484.5A priority patent/CN101926069B/zh
Publication of WO2009092509A1 publication Critical patent/WO2009092509A1/fr

Links

Classifications

    • 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • 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
    • H02H3/02—Details
    • H02H3/06—Details with automatic reconnection
    • H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection

Definitions

  • the invention relates to a control device for safe reconnection of a residual current circuit breaker according to the preamble of claim 1, and a corresponding residual current circuit breaker according to claim 7.
  • Residual current circuit breakers also called FI switches, are used wherever it is necessary to make circuits safer for people. If a fault current, such as an earth fault current, occurs in the circuit to be monitored, both the current-carrying phase conductor and the neutral conductor are disconnected and thus the circuit to be protected is completely disconnected from the power supply.
  • the function of current FI switches is based on the principle of summation current transformers, according to which all currents flowing in the circuit to be protected are added with the correct sign. If a current is dissipated to ground somewhere in the circuit due to an earth fault, the sum of the current flowing back and forth is no longer zero in the summation current transformer. The result is a current difference, which leads to the response of the residual current circuit breaker and thus to the separation and disconnection of the load circuit. The shutdown takes place via respective separation sections in the conductors.
  • EP 1569314 A1 shows a FI-switch with an additional circuit device for automatic reconnection of the FI switch.
  • this reclosing device has the disadvantage that the isolating sections of the residual current circuit breaker, which safely disconnect the load-side circuit after it has been tripped from the grid-side power supply, are bridged again. As a result, the separation between the load-side circuit and the mains-side power network achieved in the tripping case by the opened separating sections is canceled again.
  • EP 1 744 428 A2 a control device for a residual current circuit breaker is described, in which a circuit after a tripping of the circuit breaker, d. H. when open
  • the circuit breaker can be automatically closed again by means of an electric motor.
  • an earth fault monitoring device for a three-phase system wherein in a consumer, the three phase conductors of the three-phase system are connected to each other in a neutral point.
  • the earth fault monitoring device detects a short circuit between the neutral point of the load and a protective conductor. Between the star point and the protective conductor to a signal generator is connected, with which a voltage signal is generated. Integrating a current signal caused by the voltage signal causes a short-circuit to be detected.
  • the ground fault monitoring device can be supplied with a battery.
  • Earthing resistance monitoring unit detects when the earth resistance increases to a critical value.
  • the two monitoring units are designed to protect the circuit breaker be triggered independently of each other in a corresponding error case.
  • DE 60 2004 008 573 T2 describes an automatic circuit breaker for a circuit breaker comprising a circuit for checking the connection of the residual current circuit breaker to the power line and a circuit for detecting a leakage current.
  • the circuit for verifying the connection verifies that there is a sufficiently low impedance between two test points, thereby indicating the presence of a consumer.
  • the object of the invention is to provide a control device for safe reconnection of a residual current circuit breaker and a corresponding residual current circuit breaker.
  • Restarting a residual current circuit breaker and the inventive residual current circuit breaker itself allow automatic restart after a tripping of the residual current circuit breaker.
  • the present invention is characterized in particular by the fact that the control device and the residual current circuit breaker are designed so that by the switching elements of the residual current circuit breaker caused disconnections are not electrically bridged again by the control device.
  • the control device and the residual current circuit breaker are designed so that by the switching elements of the residual current circuit breaker caused disconnections are not electrically bridged again by the control device.
  • Insulation measurement between load-side conductor and ground conductor without electrical bridging the separation sections allows. Thus, a safe operation of the residual current circuit breaker is ensured.
  • the control device also has a checking device, which is connected via a coupling element galvanically isolated to the first checking device according to the preamble of patent claim 1. This further check device sets the network side between the
  • the reclosing device connects the load-side circuit by closing all switching elements again with the grid-side power grid, when one, determined by the further Prufwood impedance between 7-8 discoveredem neutral conductor and ground wire falls below a predetermined value. This ensures that a previously carried out by the first Uberpruf proposed insulation measurement between load-side conductor and ground conductor due to a faulty ground connection of the ground conductor provides no false result.
  • the present invention is suitable both for single-phase power grids with a conductor, as well as for multi-phase power grids, with, for example, three conductors.
  • the voltage supply of the control device is designed as a transformer, the primary side of the network side Power supply is supplied and the secondary side provides the necessary for the insulation measurement Prufschreib on the load side of the residual current circuit breaker. Due to the electrical isolation between the primary and secondary side of the transformer is further ensured that in the triggered state of the residual current circuit breaker whose open separation sections are not bridged by the control device.
  • the control device is integrated in the residual current circuit breaker, a compact design of a residual current circuit breaker with automatic
  • Reclosing can be achieved without losing the safe separation of the conductors is lost.
  • the power supply of the control device via a, supplied from outside of the residual current circuit breaker power source is achieved. This is particularly advantageous when the control device is attached nachtraglich to a housing of the residual current circuit breaker or installed in this.
  • the voltage supply of the control device itself is designed as an energy store, which is thus connected to the load-side current and neutral, so that it is charged only in the non-triggered state of the residual current circuit breaker.
  • a further switching element between the ground conductor and the control device is provided, which is in operative connection with the switching elements in the conductors and the neutral conductor.
  • This further switching element activated at the time of tripping the residual current circuit breaker simultaneously with the opening of the
  • the residual current circuit breaker 1 has for this purpose a measuring device 10, which taps and measures the current flowing in the current conductors L and neutral N current load side after the switching elements Sl and S2 on the conductors L and N.
  • an evaluation device 20 is provided which compares the totality of the measured currents with a reference value.
  • This evaluation device can operate, for example, according to the summation current transformer principle.
  • a shutdown device 30, as shown the switching elements Sl and S2 open, or if there is no error, the switching elements Sl and S2 keep closed. This is usually done via a corresponding relay K, which is controlled by the shutdown device 30.
  • a control device 4 is now additionally provided.
  • This comprises at least one checking device 41, a reclosing device 42 and a voltage supply 43 which is galvanically isolated from the line-side current and neutral conductors L and N.
  • This voltage supply provides a checking voltage U1 for the checking device 41.
  • the Uberpruf shark 41 sets this test voltage Ul load side between the conductor L and the ground conductor PE and between the neutral conductor and the ground conductor PE, so as to measure on the basis of the measuring current I, the impedance between the current L and neutral N and earth conductor PE.
  • This can be advantageous by means of two Resistors 46 and 47, which connect the Uberpruf planted 41 with the conductor L and the neutral conductor N.
  • the reclosing device 42 will then connect the load-side circuit 2 again by closing the switching elements S1 and S2 to the grid-side power supply 3 when the checking device 41 detects that the measurement current I caused by the test voltage U has fallen below a predetermined value and thus the impedance between current - And neutral conductor or ground conductor PE has exceeded a predetermined value.
  • the device according to the invention is characterized in that the control device 4 has a voltage supply 43 which is galvanically isolated from the line-side current conductors.
  • this power supply 43 may be designed as an internal or external energy store. In its simplest embodiment, this could be a battery or other battery. If this energy store is arranged externally, appropriate connections must be provided on the control device 4. If the energy store is arranged internally, that is to say in a housing of the control device, the battery could also be connected to the load circuit 2 in such a way that it is charged by the latter. However, this is only possible at the times in which the load circuit 2 is connected to the power grid 3. This means that a charge of the internal energy storage device 43 is only charged in the normal, non-triggered, operating state of the residual current circuit breaker 1.
  • the power supply 43 could also be a transformer whose
  • this further inspection device 44 is electrically isolated connected to the reclosing device 42 and the Uberpruf prepared 41.
  • the reclosing device connects the circuit 2 by closing all the switching elements Sl and S2 only with the power grid 3 when the, determined by the further Prufwood U2 impedance between neutral N and ground conductor PE falls below a predetermined value. This ensures that the load-side measurement does not refer to a faulty earth conductor potential.
  • a further switching element S3 between earth conductor PE and control device 4 can also be provided, which with the switching elements Sl and S2 is in active connection. Its contact is closed only when the two other contacts Sl and S2 are opened and vice versa.
  • the controller 4 is only switched to the basic functions of the residual current circuit breaker 1, if this has been triggered. An activation of the control device 4 for measuring and checking the load-side currents thus takes place only in the cases in which there is a load-side fault current detected by the fault current circuit breaker.
  • the exemplary embodiments described above using the example of a single-phase network of the control device according to the invention and of the residual current circuit breaker can accordingly also be applied to multi-phase networks with more than one current conductor.
  • the test voltage Ul is then applied via further resistors to the corresponding current conductors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un dispositif de commande permettant le réenclenchement d'un disjoncteur différentiel de manière fiable ainsi qu'un disjoncteur différentiel correspondant. Le dispositif de commande (4) permettant le réenclenchement d'un disjoncteur différentiel (1) de manière fiable, lequel a déconnecté d'un réseau électrique (3) côté réseau, de manière fiable, un circuit électrique (2) côté charge, destiné à être protégé, au moyen d'un élément de commutation respectif (S1, S2) dans plusieurs conducteurs électriques (L) et dans un conducteur neutre (N), comprend un dispositif de contrôle (41), un dispositif de réenclenchement (42) et une alimentation en courant (43), isolée galvaniquement du conducteur neutre et des conducteurs électriques côté réseau (N, L). Cette alimentation en courant (43) fournit une tension de contrôle (U1) pour le dispositif de contrôle (41), ledit dispositif de contrôle (41) appliquant cette tension de contrôle (U1) côté charge entre les conducteurs électriques (L), le conducteur neutre (N) et un conducteur de terre (PE). Le dispositif de réenclenchement (42) reconnecte le circuit électrique (2) côté charge au réseau électrique (3) côté réseau en fermant tous les éléments de commutation (S1, S2), lorsque le dispositif de contrôle (41) détecte qu'un courant de mesure (I), induit par la tension de contrôle (U1), est tombé en dessous d'une valeur prescrite.
PCT/EP2008/068359 2008-01-23 2008-12-30 Dispositif de commande permettant le réenclenchement d'un disjoncteur différentiel de manière fiable WO2009092509A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08871403A EP2235805A1 (fr) 2008-01-23 2008-12-30 Dispositif de commande permettant le réenclenchement d'un disjoncteur différentiel de manière fiable
CN200880125484.5A CN101926069B (zh) 2008-01-23 2008-12-30 控制设备和剩余电流保护开关

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008005687.1 2008-01-23
DE200810005687 DE102008005687A1 (de) 2008-01-23 2008-01-23 Steuereinrichtung zum sicheren Wiedereinschalten eines Fehlerstromschutzschalters

Publications (1)

Publication Number Publication Date
WO2009092509A1 true WO2009092509A1 (fr) 2009-07-30

Family

ID=40677897

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/068359 WO2009092509A1 (fr) 2008-01-23 2008-12-30 Dispositif de commande permettant le réenclenchement d'un disjoncteur différentiel de manière fiable

Country Status (4)

Country Link
EP (1) EP2235805A1 (fr)
CN (1) CN101926069B (fr)
DE (1) DE102008005687A1 (fr)
WO (1) WO2009092509A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660940A1 (fr) * 2012-05-01 2013-11-06 Danfoss Drives A/S Détection de connexion de mise à la terre

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012219457B4 (de) * 2012-01-13 2022-03-24 Siemens Aktiengesellschaft Schutzschaltvorrichtung zum Detektieren eines Fehlerstroms und Steuerverfahren
EP3170237B1 (fr) * 2014-07-16 2023-10-25 Eaton Intelligent Power Limited Dispositif d'abaissement de courant de défaut
US10804691B2 (en) * 2018-03-06 2020-10-13 Texas Instruments Incorporated Circuit providing reverse current protection for high-side driver
DE102018117906B4 (de) * 2018-07-24 2021-01-07 Christoph Mühlhans Verteilervorrichtung und System zum Führen und Verteilen von elektrischer Energie und zum Bereitstellen einer datenleitenden Kommunikationsverbindung
FR3137971A1 (fr) * 2022-07-18 2024-01-19 Schneider Electric Industries Sas Module de détection d’un défaut électrique pour un appareil de protection électrique et procédé correspondant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979070A (en) * 1989-06-13 1990-12-18 Bodkin Lawrence E Automatic reset circuit for GFCI
US5534782A (en) * 1993-11-17 1996-07-09 Controlled Power Limited Partnership Automatic reclosing circuit breaker using controllable feeder transducer
EP1569314A1 (fr) * 2004-02-27 2005-08-31 Gewiss S.P.A. Dispositif de réenclenchement automatique, en particulier pour disjoncteurs de courant résiduel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH579840A5 (fr) * 1974-11-14 1976-09-15 Bbc Brown Boveri & Cie
DE2508979C2 (de) * 1975-03-01 1984-07-12 Günter 4800 Bielefeld Reichensperger Anordnung für einen Schutzschalter mit einer Fehlerstrom-Überwachungseinheit und einer Erdungswiderstand-Überwachungseinheit
ITMI20050896A1 (it) * 2005-05-17 2006-11-18 Bticino Spa Apparato elettrico per il controllo e il riarmo di un dispositivo di protezione

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979070A (en) * 1989-06-13 1990-12-18 Bodkin Lawrence E Automatic reset circuit for GFCI
US5534782A (en) * 1993-11-17 1996-07-09 Controlled Power Limited Partnership Automatic reclosing circuit breaker using controllable feeder transducer
EP1569314A1 (fr) * 2004-02-27 2005-08-31 Gewiss S.P.A. Dispositif de réenclenchement automatique, en particulier pour disjoncteurs de courant résiduel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660940A1 (fr) * 2012-05-01 2013-11-06 Danfoss Drives A/S Détection de connexion de mise à la terre

Also Published As

Publication number Publication date
CN101926069B (zh) 2013-04-24
EP2235805A1 (fr) 2010-10-06
CN101926069A (zh) 2010-12-22
DE102008005687A1 (de) 2009-08-06

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