WO2006108860A1 - Procede et systeme pour augmenter et garantir la selectivite d'un dispositif de commutation dans un groupe de dispositifs de commutation et utilisation dudit systeme lors de la commutation dans des circuits electriques - Google Patents

Procede et systeme pour augmenter et garantir la selectivite d'un dispositif de commutation dans un groupe de dispositifs de commutation et utilisation dudit systeme lors de la commutation dans des circuits electriques Download PDF

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Publication number
WO2006108860A1
WO2006108860A1 PCT/EP2006/061559 EP2006061559W WO2006108860A1 WO 2006108860 A1 WO2006108860 A1 WO 2006108860A1 EP 2006061559 W EP2006061559 W EP 2006061559W WO 2006108860 A1 WO2006108860 A1 WO 2006108860A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
selectivity
upstream
impedance
downstream
Prior art date
Application number
PCT/EP2006/061559
Other languages
German (de)
English (en)
Inventor
Gerd Griepentrog
Reinhard Maier
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 EP06743289A priority Critical patent/EP1869746A1/fr
Publication of WO2006108860A1 publication Critical patent/WO2006108860A1/fr

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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
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/30—Staggered disconnection
    • 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
    • H02H3/40—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 ratio of voltage and current
    • 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

Definitions

  • the invention relates to a method for increasing and ensuring the selectivity of a switching device in a group of switching devices.
  • the invention relates to an arrangement for increasing and ensuring the selectivity of a switching device in a group of switching devices connected in series, as well as to the use of the arrangement when switching in circuits.
  • Especially power switching devices are mainly used for short-circuit protection. In addition, however, this also makes it possible to protect against overload, fault current and / or undervoltage.
  • a selective mode of operation must be provided. Selectivity means that only those protection organs that are closest to the fault, respond in no time, so that no unauthorized shutdowns, z. B. of upstream switching devices, done. In particular, this should not affect more consumers than inevitably from a disorder.
  • a "back up" protective device / property is advantageous, meaning that the breaking capacity of the downstream circuit breaker may be smaller than the short-circuit current at the installation point, which is described in detail in the specialist literature [eg 1: "Switching, contactors 'Distribution in low-voltage networks'; Berlin, Kunststoff; Siemens-Aktienteil 1990, esp. Pages 162 - 169]. Furthermore, in case of failure of the downstream switch, the upstream switch assumes the protective function. But this happens at higher current.
  • the selectivity of switching devices in a group of switching devices has hitherto been determined either by current / time Staggering or caused by a communication between the switching devices.
  • the tripping characteristics are coordinated so that the downstream switch triggers faster and with lower current.
  • the season is z. B. 70 ms and is thus in no case such that a current limit can be effected by triggering the upstream switch and on the contrary a very large load on the resources occurs.
  • the disadvantage here, however, the high and therefore costly cabling.
  • the back-up protection has so far been effected exclusively by the tripping characteristics and is thus also subject to the disadvantages of a power / time backup, [s. 1]
  • the object of the invention is therefore to propose another method for increasing and ensuring the selectivity and to provide an associated arrangement. Likewise, improved switching options should be specified.
  • the invention relates to a novel process for
  • the basis of the invention is the analysis of the impedance on the outgoing side of the upstream switch in the case of a short circuit. Circuit.
  • This impedance is on the one hand by the elements of the circuit - such as busbars, lines u. like. - educated.
  • a downstream switch also influences the level of the short-circuit current as a result of its internal resistance-such as the resistance of the contact grounds, any bimetallic or magnetic release present, and in particular due to the arc generated in it during the short-circuit shutdown.
  • a preferred feature of the invention is that the upstream switch initially opens instantaneously in the event of a short circuit and at the same time detects the impedance on the outgoing side. If the downstream switch also opens, an arc is generated in the downstream switch, which results in a significant increase in the impedance in the short-circuit mesh. By detecting the presence of an arc, the upstream switch thus detects that the downstream switch has triggered. In this case, the upstream switch can interrupt the opening process of the contacts and close the contacts again.
  • the upstream switch only makes a contact opening when the downstream impedance is below a threshold value to be set.
  • the upstream switch can assume that the short circuit is to be turned off by him. If the impedance of the short circuit exceeds the threshold value, the upstream switching device initially assumes that the short circuit is switched off by a downstream switching device.
  • the impedance of the short-circuit circuit is still observed with the arrangement according to the invention.
  • this can be detected in the upstream switch, if the downstream switch an increasing, current-limiting
  • the upstream switch recognizes with both methods from the analysis of the arc, whether the downstream switch has an opening behavior following a desired course.
  • the upstream switch can thereby also determine the type of the downstream switch and diagnostic information regarding the switching capacity of the downstream switch.
  • both selectivity and back-up protection can be effected:
  • the upstream switch By determining the proper opening of the Downstream switch, the upstream switch by blocking the trigger - as in the selectivity by communication between the switching devices - the selectivity effect.
  • a failure ie non-opening of the downstream switch can be detected.
  • the prospective short-circuit current By determining the existing after the upstream switch circuit impedance, which is determined from impedances of lines / busbar and arc impedance, the prospective short-circuit current can be determined and thus an extremely effective "back up" protection can be effected Switching the upstream switch can achieve a current limit.
  • two switching devices 10 and 20 are connected in series in a circuit 1 with a feed source, the first switch 10 a "upstream” switch with switching device 11 and the second switch 20 form a "downstream” switch.
  • the upstream switch 10 contains in addition to the usual, not shown in the figure facilities such.
  • As trigger even measuring devices 12 and 13 for measuring the current i M and the voltage u M against MP / N or other phases and a sufficiently powerful ⁇ P / signal processor 15.
  • the processor 15 detects i M and u M.
  • the respective complex impedances of the busbars or the lines in the circuit are given by R L and L L , whereby an equivalent circuit diagram can be defined.
  • R (n + 1) R (n) + ⁇ R B. (2)
  • the determination of the current gradient di m / dt is preferably carried out by magnetic voltmeter or Rogowski converter, at the output of which one of the current gradient proportional voltage is applied.
  • the value of the current can be made from this by known integration methods.
  • the upstream switch 10 opens in the event of a short circuit initially undelayed. At the same time, the resistance R B and the arc voltage Uo are detected at the point of departure.
  • the downstream switch 20 When the downstream switch 20 is opened, the arc generated in the downstream switch 20 is detected in the upstream switch 20.
  • the arc shows a significant increase in the arc voltage, which results in an increase in the impedance in the short-circuit mesh.
  • the upstream switch 10 only makes a contact opening when the output-side impedance is below a threshold value to be set.
  • the upstream switch 10 closes again. Namely, from the analysis of the arc, it can be recognized whether the downstream switch 20 has an opening behavior following a desired course. Possibly. The upstream switch 10 can thereby also determine the type of the downstream switch 20 and provide diagnostic information regarding the switching capacity of the downstream switch 20. In practice, it is possible for data for R L and L L to be transferred from the computer-assisted planning method to the microprocessor ( ⁇ P) 15.
  • ⁇ P microprocessor
  • the upstream switch can be switched on Blocking the trigger - as with the selectivity through communication between the switching devices - already realize the selectivity, in the same way a failure, ie non-opening of the downstream switch, is detected.
  • the prospective short-circuit current can also be determined and thus an extremely effective "back up" protection can be effected upstream switch achieve a current limit.

Landscapes

  • Keying Circuit Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un procédé permettant d'augmenter et de garantir la sélectivité d'un dispositif de commutation dans un groupe de dispositifs de commutation. Au moins deux circuits électriques comportant un premier commutateur antérieur et au moins un second commutateur subséquent, sont alloués audit groupe de dispositifs de commutation. Selon ce procédé, les mesures suivantes sont mises en oeuvre: l'impédance du circuit électrique qui contient le commutateur subséquent est déterminée et analysée; pour déterminer l'impédance, les éléments du circuit électrique, tels que barres omnibus, lignes ou similaires, présents dans le circuit électrique du commutateur antérieur sont pris en compte; la sélectivité est améliorée par l'analyse d'impédance. En ce qui concerne le système associé destiné à déterminer la sélectivité d'un dispositif de commutation dans un groupe de dispositifs de commutation (10, 20) montés en série, au moins un commutateur antérieur (10) et au moins un commutateur subséquent (20) étant présents dans le groupe de dispositifs de commutation, il est prévu d'utiliser un microprocesseur (15) pour déterminer la sélectivité. Le microprocesseur (15) est disposé dans le commutateur antérieur (20).
PCT/EP2006/061559 2005-04-15 2006-04-12 Procede et systeme pour augmenter et garantir la selectivite d'un dispositif de commutation dans un groupe de dispositifs de commutation et utilisation dudit systeme lors de la commutation dans des circuits electriques WO2006108860A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06743289A EP1869746A1 (fr) 2005-04-15 2006-04-12 Procede et systeme pour augmenter et garantir la selectivite d'un dispositif de commutation dans un groupe de dispositifs de commutation et utilisation dudit systeme lors de la commutation dans des circuits electriques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005017495.7 2005-04-15
DE102005017495 2005-04-15

Publications (1)

Publication Number Publication Date
WO2006108860A1 true WO2006108860A1 (fr) 2006-10-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/061559 WO2006108860A1 (fr) 2005-04-15 2006-04-12 Procede et systeme pour augmenter et garantir la selectivite d'un dispositif de commutation dans un groupe de dispositifs de commutation et utilisation dudit systeme lors de la commutation dans des circuits electriques

Country Status (2)

Country Link
EP (1) EP1869746A1 (fr)
WO (1) WO2006108860A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007021270A1 (de) * 2007-05-03 2008-11-06 Siemens Ag Verfahren zum selektiven Auslösen von Leistungsschaltern
WO2009019096A2 (fr) 2007-08-07 2009-02-12 Abb S.P.A. Procédé pour gérer un événement par défaut dans un réseau pour distribuer de l'énergie électrique, et unité de protection électronique correspondante
WO2009156513A1 (fr) * 2008-06-27 2009-12-30 Siemens Aktiengesellschaft Procédé de déclenchement sélectif de disjoncteurs en cas de court-circuit
EP2232280A1 (fr) * 2008-01-24 2010-09-29 Siemens Aktiengesellschaft Procédé et dispositif de localisation de défaillance permettant de déterminer une valeur d'emplacement de défaillance
DE102010042609A1 (de) * 2010-10-19 2012-04-19 Siemens Aktiengesellschaft Verfahren für eine Anordnung zur Stromverteilung mit einer Einspeisung und nachfolgend mindestens zwei Schaltern mit selektiven Eigenschaften
DE102011082339A1 (de) * 2011-09-08 2013-03-14 Siemens Aktiengesellschaft Anordnung zur Stromverteilung mit zwei miteinander verbundenen Schaltern, insbesondere Leistungsschaltern für Niederspannungen
EP1940000A3 (fr) * 2006-12-28 2013-08-21 General Electric Company Système de protection de circuit
WO2015197471A1 (fr) * 2014-06-24 2015-12-30 Eaton Industries (Netherlands) B.V. Disjoncteur sélectif

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6373669B1 (en) 1997-03-26 2002-04-16 Siemens Aktiengesellschaft Process and arrangement for selective network monitoring for switchgear
US6392857B1 (en) 1999-03-30 2002-05-21 Electricite De France-Service National Device and process for protecting a line of a network of electricity supply lines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6373669B1 (en) 1997-03-26 2002-04-16 Siemens Aktiengesellschaft Process and arrangement for selective network monitoring for switchgear
US6392857B1 (en) 1999-03-30 2002-05-21 Electricite De France-Service National Device and process for protecting a line of a network of electricity supply lines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
H.CLEMENS; K. ROTHE: "Schutztechnik in Elektro- energiesystemen", 1991, VDE-VERLAG GMBH, pages: 350 - 358

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1940000A3 (fr) * 2006-12-28 2013-08-21 General Electric Company Système de protection de circuit
DE102007021270A1 (de) * 2007-05-03 2008-11-06 Siemens Ag Verfahren zum selektiven Auslösen von Leistungsschaltern
WO2008135479A1 (fr) * 2007-05-03 2008-11-13 Siemens Aktiengesellschaft Procédé de déclenchement sélectif d'interrupteurs de puissance
WO2009019096A2 (fr) 2007-08-07 2009-02-12 Abb S.P.A. Procédé pour gérer un événement par défaut dans un réseau pour distribuer de l'énergie électrique, et unité de protection électronique correspondante
WO2009019096A3 (fr) * 2007-08-07 2009-04-16 Abb Spa Procédé pour gérer un événement par défaut dans un réseau pour distribuer de l'énergie électrique, et unité de protection électronique correspondante
US8392129B2 (en) * 2007-08-07 2013-03-05 Abb S.P.A. Method for managing a fault event in a network for distributing electrical energy, and a corresponding electronic protection unit
US20110080680A1 (en) * 2007-08-07 2011-04-07 Abb S.P.A. Method for managing a fault event in a network for distributing electrical energy, and a corresponding electronic protection unit
EP2232280A1 (fr) * 2008-01-24 2010-09-29 Siemens Aktiengesellschaft Procédé et dispositif de localisation de défaillance permettant de déterminer une valeur d'emplacement de défaillance
CN102077435A (zh) * 2008-06-27 2011-05-25 西门子公司 在短路的情况下选择性触发断路器的方法
DE102008030987A1 (de) 2008-06-27 2010-01-07 Siemens Aktiengesellschaft Verfahren zum selektiven Auslösen von Leistungsschaltern im Falle eines Kurzschlusses
US8503142B2 (en) 2008-06-27 2013-08-06 Siemens Aktiengesellschaft Method for selectively triggering circuit breakers in the event of a short circuit
WO2009156513A1 (fr) * 2008-06-27 2009-12-30 Siemens Aktiengesellschaft Procédé de déclenchement sélectif de disjoncteurs en cas de court-circuit
CN102077435B (zh) * 2008-06-27 2014-04-30 西门子公司 在短路的情况下选择性触发断路器的方法
DE102010042609A1 (de) * 2010-10-19 2012-04-19 Siemens Aktiengesellschaft Verfahren für eine Anordnung zur Stromverteilung mit einer Einspeisung und nachfolgend mindestens zwei Schaltern mit selektiven Eigenschaften
DE102011082339A1 (de) * 2011-09-08 2013-03-14 Siemens Aktiengesellschaft Anordnung zur Stromverteilung mit zwei miteinander verbundenen Schaltern, insbesondere Leistungsschaltern für Niederspannungen
WO2013034633A1 (fr) * 2011-09-08 2013-03-14 Siemens Aktiengesellschaft Dispositif de distribution du courant comportant deux interrupteurs reliés entre eux, plus particulièrement des interrupteurs de puissance pour basses tensions
WO2015197471A1 (fr) * 2014-06-24 2015-12-30 Eaton Industries (Netherlands) B.V. Disjoncteur sélectif
US10483750B2 (en) 2014-06-24 2019-11-19 Eaton Intelligent Power Limited Selective circuit breaker

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Publication number Publication date
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