EP1869746A1 - 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 electriquesInfo
- Publication number
- EP1869746A1 EP1869746A1 EP06743289A EP06743289A EP1869746A1 EP 1869746 A1 EP1869746 A1 EP 1869746A1 EP 06743289 A EP06743289 A EP 06743289A EP 06743289 A EP06743289 A EP 06743289A EP 1869746 A1 EP1869746 A1 EP 1869746A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- selectivity
- upstream
- impedance
- downstream
- 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- Withdrawn
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
- H02H7/26—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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005017495 | 2005-04-15 | ||
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1869746A1 true EP1869746A1 (fr) | 2007-12-26 |
Family
ID=36930183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06743289A Withdrawn 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 |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1869746A1 (fr) |
WO (1) | WO2006108860A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7561393B2 (en) * | 2006-12-28 | 2009-07-14 | General Electric Company | Circuit protection system |
DE102007021270A1 (de) * | 2007-05-03 | 2008-11-06 | Siemens Ag | Verfahren zum selektiven Auslösen von Leistungsschaltern |
ITMI20071642A1 (it) | 2007-08-07 | 2009-02-08 | Abb Service Srl | Un procedimento per la gestione di un evento di guasto in una rete di distribuzione dell'energia elettrica ed una relativa unita' elettronica di protezione. |
WO2009092398A1 (fr) * | 2008-01-24 | 2009-07-30 | Siemens Aktiengesellschaft | Procédé et dispositif de localisation de défaillance permettant de déterminer une valeur d’emplacement de défaillance |
DE102008030987A1 (de) | 2008-06-27 | 2010-01-07 | Siemens Aktiengesellschaft | Verfahren zum selektiven Auslösen von Leistungsschaltern im Falle eines Kurzschlusses |
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 |
GB2527534A (en) | 2014-06-24 | 2015-12-30 | Eaton Ind Netherlands Bv | Selective circuit breaker |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0970554B1 (fr) | 1997-03-26 | 2003-10-22 | Siemens Aktiengesellschaft | Procede et dispositif de surveillance selective de reseau dans des installations de commutation |
FR2791823B1 (fr) | 1999-03-30 | 2001-05-11 | Electricite De France | Dispositif et procede de protection d'une ligne d'un reseau de lignes d'alimentation en energie electrique |
-
2006
- 2006-04-12 WO PCT/EP2006/061559 patent/WO2006108860A1/fr not_active Application Discontinuation
- 2006-04-12 EP EP06743289A patent/EP1869746A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2006108860A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006108860A1 (fr) | 2006-10-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2291895B1 (fr) | Procédé de déclenchement sélectif de disjoncteurs en cas de court-circuit | |
EP1869746A1 (fr) | 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 | |
DE69823936T2 (de) | Erdschlussfehlerschutzschaltung für mehrquellensystem | |
DE102014224173B4 (de) | Leistungsschalter | |
DE112012001189T5 (de) | Verfahren, Systeme und Einrichtungen zum Erkennen paralleler elektrischer Fehlerlichtbögen | |
DE102006019467A1 (de) | Verfahren und Vorrichtung zur Kurzschlussfrüherkennung in einem elektrischen Netz | |
DE102014218831A1 (de) | Leistungsschalter | |
EP3108554B1 (fr) | Procédé de protection de différentiel et dispositif de protection de différentiel | |
EP0909956B1 (fr) | Procédé et détermination de la résistance d'un réseau de distribution électrique | |
DE10032655A1 (de) | Elektrischer Überstromauslöser für einen Niederspannungs-Leistungsschalter | |
EP2243147B1 (fr) | Commutateur de protection contre les courants de défaut | |
DE69122078T2 (de) | Leistungseinführungssystem | |
EP1977492A1 (fr) | Dispositif de protection comprenant un commutateur de puissance, notamment un commutateur de puissance à basse tension | |
EP2143184B1 (fr) | Procédé de déclenchement sélectif d'interrupteurs de puissance | |
EP3595114B1 (fr) | Procédé et agencement de détection d'une erreur de spire dans un transformateur sur la base de valeurs correspondantes de courant à séquence inverse | |
EP2345123B1 (fr) | Procédé de protection différentielle et appareil de protection différentielle | |
EP2083493B1 (fr) | Relais de surcharge et procédé de fonctionnement d'un tel relais de surcharge | |
WO2008128871A1 (fr) | Interrupteur de sécurité et dispositif de contrôle pour un interrupteur de sécurité, en particulier un interrupteur de puissance à basse tension | |
EP2115759B1 (fr) | Dispositif de protection et son procédé de fonctionnement | |
EP3799670B1 (fr) | Disjoncteur de puissance à basse tension et unité de détection d'arc parasite à compensation en raison du déphasage | |
EP0239965B1 (fr) | Procédé et dispositif pour exciter un dispositif de protection du distance polyphasé | |
DE3905335C2 (fr) | ||
DE10312504B4 (de) | Verfahren zum Abschätzen des Lichtbogenabbrandes von Schaltkontakten | |
EP3913382B1 (fr) | Procédé et dispositif de détermination de la localisation d'un défaut non symétrique à trois pôles sur une ligne d'un réseau d'alimentation électrique triphasé | |
DE102007003176B4 (de) | Leitungsschutzschalter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20071008 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20130211 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20161101 |