WO2013034633A1 - Dispositif de distribution du courant comportant deux interrupteurs reliés entre eux, plus particulièrement des interrupteurs de puissance pour basses tensions - Google Patents

Dispositif de distribution du courant comportant deux interrupteurs reliés entre eux, plus particulièrement des interrupteurs de puissance pour basses tensions Download PDF

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Publication number
WO2013034633A1
WO2013034633A1 PCT/EP2012/067395 EP2012067395W WO2013034633A1 WO 2013034633 A1 WO2013034633 A1 WO 2013034633A1 EP 2012067395 W EP2012067395 W EP 2012067395W WO 2013034633 A1 WO2013034633 A1 WO 2013034633A1
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WO
WIPO (PCT)
Prior art keywords
switch
current
switches
voltage
upstream
Prior art date
Application number
PCT/EP2012/067395
Other languages
German (de)
English (en)
Inventor
Michael Anheuser
Wolfgang Erven
Thomas Kiendl
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
Publication of WO2013034633A1 publication Critical patent/WO2013034633A1/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
    • 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 an arrangement for power distribution with at least two interconnected switches, in particular circuit breakers for low voltages according to claim 1.
  • the switches is corresponding power ⁇ switch for example, for the low-voltage range, which are each designed for a nominal current and the current flowing through the switch in the event of an error interrupt, especially when a short circuit.
  • ⁇ switch for example, for the low-voltage range, which are each designed for a nominal current and the current flowing through the switch in the event of an error interrupt, especially when a short circuit.
  • only the plant ⁇ branch is to be turned off, which is affected by the error, ie open only the parent switch, which is closest to the error.
  • This behavior is called selective shutdown behavior.
  • the maximum achievable selective shut-off ⁇ behavior is referred to as total selectivity. This means that the selective switch-off behavior is to be ensured up to the short-circuit breaking capacity of the switchgear or the individual system branches.
  • the switches are staggered in switchgear (in relay levels ). In more switches the connected immediately behind the feed switch form the highest th relay plane to the switch of the highest Staffelebe ⁇ ne switch connected to the next lower Staffelebe ⁇ ne, which are connected to the switches of the next lower grading level switch, the grading level underneath and so on. In a staggered minimum switch arrangement, at least two switches are connected in series.
  • a trip unit and a detection device are provided with the Help from transducers detects the current and voltage flowing through the switch or drops at this (and thus at the plant branch or the plant branches).
  • the trip unit calculated based on the current and given ⁇ if the voltage is at least a value (based on a predetermined triggering criterion, eg a predetermined
  • the switches are designed so that the switch ⁇ logic and / or the mechanical design determines the shutdown in the selective case, so that the mechanical as well as the logical interaction in the design of a switchgear can be determined eg by means of tables.
  • a suitable switch is selected to ensure the selectivity for a particular Po ⁇ sition within the staggered (staggered Wegeranord- voltage), wherein the switches must satisfy certain boundary conditions (switch settings).
  • the switches distinguish between current, time and energy selectivity.
  • Current selective means staggering after the overcurrent thresholds, time-selective staggering after the delay times when detecting an overcurrent and energy-selective staggering according to the tripping energy.
  • EP 0 838 887 B1 shows a typical construction of a switch configuration with signaling selectivity, also known as ZSI (Zone Selective Interlocking).
  • ZSI Zero Selective Interlocking
  • the disadvantage here is that the selective protection requires a communication between the individual switches.
  • the object of the invention is to propose a selective protection, which allows any staggering of the switch in the nominal current distance without communication connection.
  • the solution provides that an algorithm is provided, which on the basis of the current and the voltage, the occurrence of a
  • Switching arc in the downstream switch detects each, and that when detected switching arc each Blockie ⁇ tion (self-blocking) of the triggering (in spite of tripping criterion fulfilled) by the trip unit.
  • the generic erfinde- step lies in the combination of the advantages of selectivity en ⁇ gen staggering of the message selectivity (up to rated current distance 1: 1) and the absence of Medunikationsleitun ⁇ gen between the switches for implementing the reporting selectivity. This is essentially achieved in that the arrangement works top-down and not as in the known
  • switches in the end branches have no electronic tripping unit and also not - as in the case of message selectivity - be integrated in a communication.
  • switches with instantaneous release ie without or with a disarmed release unit, are sufficient. To ensure system protection, the blocking is limited in time.
  • the algorithm calculates a recognition value.
  • the detection value with a specified differently surrounded limit value is compared.
  • the current distribution takes place in a switchgear and that the voltage dropping at the upstream switch corresponds to the voltage drop at the connected plant branch.
  • the trigger criterion corresponds to the exceeding of a predetermined current limit value.
  • the invention is described in more detail below on the basis of an exemplary embodiment, in which the sole Figure shows a specific ⁇ matic view of a switchgear 1 with switches 2, 2a.
  • the switchgear 1 a plurality of switches 2, 2a are arranged staggered, wherein the current from a feed 3 from the switch 2, 2a on the individual plant branches
  • the switches 2, 2a han ⁇ delt it is breakers for low-voltage range, which are each designed for a rated current. Through each of the switches 2, 2a a conductor is guided for each phase. When the switch 2, 2a is closed, the switching contacts of each phase contact one another. To open a switch 2, 2 a whose switching contacts are separated by a Heidelbergmecha ⁇ mechanism.
  • the switch 2 immediately behind the feed 3 here forms the stagger level IV of the switchgear, so the IV or highest staggered level.
  • the three switches 2, 2a of the Staf ⁇ felebene IV are the grading level III, the three switches 2, 2a of the grading level III, the grading level II, and the three switches 2a of the grading level II, the grading level I. All the switches are the Endabzweigschalter, are indicated in Figure 1 by the reference numeral 2a; They are designed as switches 2a with instantaneous tripping (eg as thermal triggers).
  • the two shown in the figure on the right switch 2a leveling III level are Endabzweigschalter, to each of which a plant branch as Endabzweig and no further switch 2 is arranged downstream.
  • the arrows 4 each point in the direction of the plant or in the direction of the plant branch.
  • the switch 2 shown on the left in Fig. 1 the stagger level III is connected to the three switches 2, 2a of Staf ⁇ felebene II, of which the two shown in Fig. 1 left switch 2a of the scale level II are also end branch switch.
  • the switch 2 on the right level II shown on the right is in turn connected to the three switches 2a of the level relay I, which are all three Endabzweigschalter.
  • the current flowing through a switch 2 of the bump level I also flows through the right switch 2 of the bump level II, and the current flowing through the left switch 2 bump level III also flows through the switch 2 of the bump level IV.
  • These switches 2 are almost in series ⁇ switched.
  • the switch 2 of the stagger level IV is the switches 2, 2a of the stagger level III before ⁇ ordered, conversely, the switches 2, 2a of the stagger level III of the switch 2 of the stagger level IV are arranged downstream.
  • Each switch 2 has detection means for the current flowing through the (corresponding) switch 2 and the voltage dropping at the (corresponding) switch 2.
  • the respective voltage dropping on the (associated) switch 2 is, so to speak, the voltage which drops across the subsequent system branch or plant branches.
  • each switch 2 which is not Endabzweigschalter, a trip unit, which based on the detected
  • the trip units are further equipped with an algorithm (calculation algorithm), which he knows a switching arc ⁇ when this occurs in a downstream switch 2, 2a.
  • the detection takes place relatively early, namely as soon as the switch contacts begin to separate something while pulling a switching arc, so already in the approach.
  • the switching arc is used in early detection by the algo- time well before the full opening of the
  • the algorithm therefore detects early on whether a downstream switch 2, 2a is currently in the process of triggering. Should this fail or too long to open and thus to extinguish the arc, it is the upstream switch 2, 2a possible to recognize this also quickly and trigger in the sense of backup protection instead of the downstream switch 2, 2a.
  • the necessary ⁇ ness of a cut-off in case of error is detected respectively in terms of selectivity from upstream button 2. If there is no need for shutdown by the upstream switch 2, so the need for a shutdown of the upstream switch 2 is not recognized, it does not trigger, but the triggering is left alone a downstream switch 2, 2a, namely the switch 2, 2a which is closest to the fault location.
  • the parameterization of the arrangement can be made during commissioning by the SET ⁇ development of the necessary trigger parameters. Cabling for communication between the switches 2, 2a is not required.
  • the Endabzweigschalter switch 2a
  • switch 2a also have a detection device and a (possibly disarmed) trip unit.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention concerne un dispositif (1) pour la distribution de courant, comprenant deux interrupteurs (2, 2a) reliés entre eux, plus particulièrement des interrupteurs de puissance pour basses tensions, dont un interrupteur (2) est branché en amont de l'autre interrupteur (2, 2a) par rapport à une alimentation (3), un dispositif de détection, affecté à l'interrupteur (2) branché en amont, qui détecte le courant traversant l'interrupteur (2) branché en amont et la tension au niveau de l'interrupteur (2) branché en amont, un module de déclenchement électronique qui évalue le courant ainsi que la tension en fonction d'un critère de déclenchement prédéfini, et un déclenchement de l'interrupteur (2) a lieu lorsque le critère de déclenchement est satisfait. Pour obtenir une protection sélective avec un échelonnement quelconque des interrupteurs dans l'intervalle de courant nominal, il est prévu un algorithme qui détecte, à l'aide du courant et de la tension, un arc électrique de commutation dans l'interrupteur (2, 2a) branché en aval et, lorsqu'un arc électrique de commutation est détecté, le déclenchement est bloqué.
PCT/EP2012/067395 2011-09-08 2012-09-06 Dispositif de distribution du courant comportant deux interrupteurs reliés entre eux, plus particulièrement des interrupteurs de puissance pour basses tensions WO2013034633A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011082339.5 2011-09-08
DE201110082339 DE102011082339A1 (de) 2011-09-08 2011-09-08 Anordnung zur Stromverteilung mit zwei miteinander verbundenen Schaltern, insbesondere Leistungsschaltern für Niederspannungen

Publications (1)

Publication Number Publication Date
WO2013034633A1 true WO2013034633A1 (fr) 2013-03-14

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PCT/EP2012/067395 WO2013034633A1 (fr) 2011-09-08 2012-09-06 Dispositif de distribution du courant comportant deux interrupteurs reliés entre eux, plus particulièrement des interrupteurs de puissance pour basses tensions

Country Status (2)

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DE (1) DE102011082339A1 (fr)
WO (1) WO2013034633A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11217987B2 (en) * 2019-12-30 2022-01-04 Schneider Electric USA, Inc. Arc suppression in circuit protective devices
CN113285432B (zh) * 2021-07-26 2021-10-12 广东电网有限责任公司东莞供电局 一种电力系统继电保护的自动化装置及保护方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0838887B1 (fr) 1996-10-25 2002-12-04 ABB Research Ltd. Système de distribution d'énergie avec disjoncteurs de protection automatiques et procédé associé
WO2006108860A1 (fr) * 2005-04-15 2006-10-19 Siemens Aktiengesellschaft 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
DE102007021270A1 (de) * 2007-05-03 2008-11-06 Siemens Ag Verfahren zum selektiven Auslösen von Leistungsschaltern
WO2009156513A1 (fr) * 2008-06-27 2009-12-30 Siemens Aktiengesellschaft Procédé de déclenchement sélectif de disjoncteurs en cas de court-circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0838887B1 (fr) 1996-10-25 2002-12-04 ABB Research Ltd. Système de distribution d'énergie avec disjoncteurs de protection automatiques et procédé associé
WO2006108860A1 (fr) * 2005-04-15 2006-10-19 Siemens Aktiengesellschaft 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
DE102007021270A1 (de) * 2007-05-03 2008-11-06 Siemens Ag Verfahren zum selektiven Auslösen von Leistungsschaltern
WO2009156513A1 (fr) * 2008-06-27 2009-12-30 Siemens Aktiengesellschaft Procédé de déclenchement sélectif de disjoncteurs en cas de court-circuit

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