WO2010094548A1 - Dispositif de protection électrique et procédé de commande du dispositif de protection électrique - Google Patents

Dispositif de protection électrique et procédé de commande du dispositif de protection électrique Download PDF

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Publication number
WO2010094548A1
WO2010094548A1 PCT/EP2010/051137 EP2010051137W WO2010094548A1 WO 2010094548 A1 WO2010094548 A1 WO 2010094548A1 EP 2010051137 W EP2010051137 W EP 2010051137W WO 2010094548 A1 WO2010094548 A1 WO 2010094548A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective
current
protection device
electrical
elements
Prior art date
Application number
PCT/EP2010/051137
Other languages
German (de)
English (en)
Inventor
Thomas Rothmayer
Harald Schweigert
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 EP10702661A priority Critical patent/EP2399327A1/fr
Priority to CN201080008163.4A priority patent/CN102326309B/zh
Publication of WO2010094548A1 publication Critical patent/WO2010094548A1/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
    • 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
    • H02H3/087—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 dc applications
    • 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
    • H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection

Definitions

  • the invention relates to an electrical protective device for the arrangement between at least one consumer and a power supply, wherein this protective device has a Strombegrezungs- and a shutdown function. Furthermore, the invention relates to a control method of the electrical protective device.
  • Electrical protective devices are used wherever accidents within an electrical system can endanger people and / or machines.
  • an electrical protection device in the supply of a consumer or more consumers by means of a power supply, it requires an electrical protection device. This is arranged between the power supply and the consumer (s) to reduce the current through the consumer (s) in the event of a fault and to shut it off if the fault persists.
  • each load branch makes sense to secure with an electrical protective device. If a fault occurs in a load branch, it is current-limited or switched off, without jeopardizing the supply of the remaining load branches. Without such a protective device, a faulty load branch loads the power supply beyond the intended load current.
  • the power supply in particular a switched-mode power supply, then optionally transitions itself into a current-limiting mode and switches off when the fault persists. All load branches are then de-energized. The same thing happens when the loads at the output of the
  • Power supply are each protected by means of an upstream, mechanical circuit breaker, as a such a significant overcurrent needed to trigger. This overcurrent can often no longer supply the power supply in addition to the supply of the remaining loads.
  • the type of application of the generic electrical protective devices entails that they must be present with different current limit values specified as tripping limits.
  • each load branch thus comprises an electrical protection device with a respective different current limit value.
  • there is only one load branch which, as a result of changed production conditions, comprises once more and once fewer consumers. Even in such a case, electrical protective devices with different current limits must be used.
  • the invention has for its object to provide an improvement over the prior art for an electrical protective device of the type mentioned.
  • the protective device is formed from a plurality of current-limiting or disconnecting protective elements, the outputs of which are connected in parallel.
  • a simple measure is specified to secure a load branch or multiple load branches with the respective required current limit.
  • the respective current limit results from the sum of the partial current limits of the protective elements connected in parallel on the output side.
  • a protective device comprises, for example, a selectable number of protective elements which, in total, necessitate the load required for a connected load Provide protection without being over-dimensioned. It is also possible to subdivide the protective device into several protective device blocks in order to create a number of separate, parallel safety channels for different loads or load branches in this way. Different levels of protection elements are connected together on the output side for different loads. The respective interconnected protective elements form a block with the required protection protection for each connected load.
  • the corresponding control method provides that a protective element, upon reaching an assigned predetermined partial current limit value, limits the current through the protective element until a critical parameter of the protective element exceeds a predetermined maximum value and shuts off the protective element.
  • the load current through the protective elements connected in parallel thus always divides in normal operation so that none of the protective elements flows a current greater than the partial current limit value.
  • the current is reduced by this protective element.
  • the current increases through the other protective elements connected in parallel with this protective element. In this way, tolerances of the individual protection elements are compensated.
  • each protective element has a fixed partial current limit, so that the protective elements are simple in construction and therefore inexpensive to manufacture.
  • a current limit value of the protective device or of a protective device block is formed as the sum of equally large partial current limit values of the parallel-connected protective elements.
  • different protective devices or protective device blocks can be selected graded current limits.
  • load branches with a wide variety of powers can be protected without overdimensioning the protective device.
  • a simple embodiment is carried out in such a way that the protective elements of the protective device are connected on the output side by means of a connecting comb. A complex wiring in a control box is thus eliminated.
  • the connecting comb is soldered to the outputs of the protective elements, so that a secure and predictable contact between the individual outputs of the protective elements is given.
  • the connecting comb between the protective elements has at least one manually separable separation point, in particular a predetermined breaking point.
  • the protective device comprises a preselectable number of protective elements, which are already connected on the output side. As part of an installation, the protective device is divided into several as needed
  • Each of the resulting protector blocks comprises the number of protective elements required to protect a connected load branch.
  • Another embodiment provides that the protective device is installed in the power supply. This simplifies the installation, especially in a control box.
  • each protective element comprises a drive unit and a current limiting element with a variable volume resistance.
  • the volume resistance is determined by means of the drive unit as a function of the current flowing through the current limiting element current.
  • the control then takes place, for example, in the form that the passage channel of a protection element that has arrived at the partial flow limit value becomes slightly higher impedance.
  • the abregelde protective element builds only so much more resistance that the tolerances of the protective elements are compensated.
  • the voltage is detected at each output of a protection element and that upon reaching a predetermined voltage drop value, the protection element concerned limits the current through the protection element for a predetermined limitation period and that the protection element switches off after a lapse of the limitation period.
  • a timer is thus started only after a clear drop in the voltage at the output of all parallel-connected protection elements, so that minor disturbances or an uneven distribution of the load current does not lead to shutdown.
  • Chip temperature of the respective protective element detected. In this way, it is ensured that the protective device or a relevant protector block only turns off when the thermal load due to a Abregelvorgangs is too large.
  • Fig. 1 circuit construction of a protective device with two consumer branches
  • Fig. 1 is a protective device SCH with several
  • a first consumer or consumer branch V1 is connected to the first protective device block BI1 and a second consumer or consumer branch V2 is connected via the second protective device block B12 to a supply voltage U of a power supply.
  • Each protective element El ... En comprises a current limiting element Tl ... Tn and a Current detection unit II ... In.
  • the respective current limiting element Tl... Tn is designed, for example, as a transistor and the respective current detection unit II... In is designed as a current transformer.
  • the current flow through the current limiting element Tl ... Tn is controlled as a function of the respectively detected current.
  • Each drive unit Al ... An is a partial current limit specified.
  • the partial current limit values of the protection elements El, E2, E3 and E4... En which are connected on the output side in total produce the current limit value of the respective block BI1 or B12.
  • the control units Al ... An are either constructed analogously or designed as a microcontroller.
  • Each current limiting element Tl ... Tn is another
  • the functioning of the protective device SCH is explained with reference to the first protective device block BI1.
  • the consumer or consumer branch Vl is connected to an output terminal KIl of the block BIl.
  • the other two output terminals K12, K13 remain free when the output side connection is made by means of a connecting comb Ka.
  • a first connection comb portion KaI connects the outputs of the first block BI1
  • a second connection comb portion Ka2 connects the outputs of the second block B12.
  • an output-side connection via the corresponding terminals KIl, K12, K13 or K14 ... Kln done by wire bridges.
  • each output terminal KIl ... KIn must be designed for the maximum possible current limit value.
  • the load current drawn by the consumer or load branch V 1 will not reach the current limit value of the block BI 1.
  • the load current then divides according to the volume resistances on the three protective elements El, E2, E3. Tolerances can lead to a protective element El or E2 or E3 reaching its partial current limit value.
  • the respective control unit A1 or A2 or A3 then regulates the current flowing through this protective element E1 or E2 or E3, so that correspondingly more current flows through the other two protective elements E1, E2 or E2, E3 or E1, E3 ,
  • the chip temperature of the respective current limiting element Tl, T2, T3 is used. If the maximum chip temperature of a protective element El or E2 or E3 is reached, this switches off. As a result, the protective elements El, E2 or E2, E3 or El, E3 connected in parallel must assume the overload. If the maximum permissible chip temperature is exceeded, these also switch off.
  • overloads are allowed only for a predetermined period of time.
  • a timer can only be started after a clear drop in the voltage at the output of the parallel-connected protection units El, E2, E3.
  • a sequential sampling of the individual protective element output voltages is to be carried out by means of a higher-level control unit, since this control unit is not aware of which protective units El ... En are connected in parallel. From the output voltages is closed to the thermal load of the current limiting elements Tl, T2, T3.
  • the respective block BI1 is switched off, for example by means of the higher-level control unit to the Control units Al, A2, A3 a shutdown signal is transmitted.
  • a subsequent switch-on process cooling-down times to limit the component temperatures must be taken into account.
  • reset all timers by means of a manually triggered reset. The reset is disabled until either a predetermined switch-off time has expired or a critical parameter falls below a specified switch-on value.
  • a further embodiment provides that the voltage drop is detected at the respective current limiting element T2, T2, T3.
  • the ambient temperature can additionally be detected. At lower ambient temperatures, the permissible load duration is extended. When detecting the respective chip temperature, however, the ambient temperature is already taken into account.
  • a connecting comb Ka Such is shown in Fig. 2 and is electrically connected by means of appropriate connections with the outputs of the protective elements (El ... En). Conveniently, this is done by soldering appropriate Lötfahen in a printed circuit board LP. Each solder tag is connected to a protective element output. With such a connection comb Ka between the individual protective elements El ... En correspondingly large cable cross-sections, so that a large number of protective elements El ... En can be connected in parallel. In addition, the installation effort is reduced significantly, especially when between the protective elements El ... En manually separable separation points Br are provided, preferably designed as predetermined breaking points. According to the consumers or consumer branches Vl, V2, the connecting comb Ka is interrupted at such a separating point Br, so that the connecting comb Ka is divided into a plurality of connecting comb sections KaI, Ka2.
  • the connecting comb Ka for example, separators TS, which allow to initiate a torque in the region of the separation points Br.
  • cold work hardening occurs in the region of these separating points Br and, as a consequence, a desired break occurs on both sides of the separating piece TS.
  • the separators TS only as detachable parts. It must be ensured in every case that the separators TS have an appropriate size, so that they do not accidentally fall through louvers of a device housing. This can be achieved in that the separators TS are formed in comparison to the other line cross-section either as a larger flat parts or as larger curved parts.
  • the connecting comb Ka can also cover a colored mark. This is released when breaking out of a separator TS to clearly indicate which protective elements El ... En connected or separated from each other.
  • Protective device is voltage-free. For this purpose, for example, provide a cover that can only be opened when the protection device is switched off.
  • the connecting comb is made partially insulated.

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un dispositif de protection électrique (SCH) à disposer entre au moins un consommateur (V1, V2) et une alimentation électrique, le dispositif de protection électrique (SCH) possédant une fonction de limitation du courant et une fonction de coupure. Le dispositif de protection électrique (SCH) est constitué de plusieurs éléments de protection (E1, …, En) ayant des fonctions de limitation du courant ou de coupure, dont les sorties sont montées en parallèle. L'invention concerne en outre un procédé de commande du dispositif de protection électrique (SCH).
PCT/EP2010/051137 2009-02-18 2010-02-01 Dispositif de protection électrique et procédé de commande du dispositif de protection électrique WO2010094548A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10702661A EP2399327A1 (fr) 2009-02-18 2010-02-01 Dispositif de protection électrique et procédé de commande du dispositif de protection électrique
CN201080008163.4A CN102326309B (zh) 2009-02-18 2010-02-01 电保护装置和电保护装置的控制方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2712009A AT507083B1 (de) 2009-02-18 2009-02-18 Elektrische schutzeinrichtung und steuerungsverfahren der elektrischen schutzeinrichtung
ATA271/2009 2009-02-18

Publications (1)

Publication Number Publication Date
WO2010094548A1 true WO2010094548A1 (fr) 2010-08-26

Family

ID=41664436

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Application Number Title Priority Date Filing Date
PCT/EP2010/051137 WO2010094548A1 (fr) 2009-02-18 2010-02-01 Dispositif de protection électrique et procédé de commande du dispositif de protection électrique

Country Status (4)

Country Link
EP (1) EP2399327A1 (fr)
CN (1) CN102326309B (fr)
AT (1) AT507083B1 (fr)
WO (1) WO2010094548A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102723699B (zh) * 2012-06-15 2016-06-08 北京鼎汉技术股份有限公司 一种直流电源模块保护方法和装置
NL2012369B1 (nl) * 2014-03-05 2015-12-03 Willem Blanke Francois Bewakingssysteem voor een elektrische installatie,verdeelinrichting en werkwijze daarvoor.
CN106848998B (zh) * 2017-02-28 2019-05-24 浙江大华技术股份有限公司 一种电源输出保护电路及装置
DE102017220711A1 (de) * 2017-11-20 2019-05-23 Ellenberger & Poensgen Gmbh Schutzvorrichtung sowie Verfahren zum Betrieb einer solchen Schutzvorrichtung
CN112186721B (zh) * 2020-09-30 2021-06-04 江苏卫川物联科技有限公司 电气防火限流式保护器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996014684A1 (fr) * 1994-11-02 1996-05-17 Raychem Corporation Dispositif transistorise reinitialisable assurant la protection contre les surintensites
EP0933849A1 (fr) 1998-01-29 1999-08-04 Ellenberger & Poensgen GmbH Dispositif d'alimentation électrique
DE19846639A1 (de) * 1998-10-09 2000-04-27 Abb Research Ltd Neue elektrische Schalteinrichtung
WO2001041277A2 (fr) 1999-12-01 2001-06-07 Siemens Ag Österreich Unite de surveillance pour alimentations electriques
DE10149458C1 (de) * 2001-10-08 2002-12-05 Leoni Bordnetz Sys Gmbh & Co Leitungsnetz und Verfahren zum Schutz des Leitungsnetzes gegen einen seriellen Lichtbogen
AT504528B1 (de) 2007-02-16 2008-06-15 Siemens Ag Oesterreich Elektronische sicherung für eine stromversorgung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006009459U1 (de) * 2006-06-16 2007-10-25 Weidmüller Interface GmbH & Co. KG Anschlussleiste mit Kodiervorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996014684A1 (fr) * 1994-11-02 1996-05-17 Raychem Corporation Dispositif transistorise reinitialisable assurant la protection contre les surintensites
EP0933849A1 (fr) 1998-01-29 1999-08-04 Ellenberger & Poensgen GmbH Dispositif d'alimentation électrique
DE19846639A1 (de) * 1998-10-09 2000-04-27 Abb Research Ltd Neue elektrische Schalteinrichtung
WO2001041277A2 (fr) 1999-12-01 2001-06-07 Siemens Ag Österreich Unite de surveillance pour alimentations electriques
DE10149458C1 (de) * 2001-10-08 2002-12-05 Leoni Bordnetz Sys Gmbh & Co Leitungsnetz und Verfahren zum Schutz des Leitungsnetzes gegen einen seriellen Lichtbogen
AT504528B1 (de) 2007-02-16 2008-06-15 Siemens Ag Oesterreich Elektronische sicherung für eine stromversorgung

Also Published As

Publication number Publication date
AT507083B1 (de) 2010-02-15
AT507083A4 (de) 2010-02-15
CN102326309B (zh) 2015-06-03
CN102326309A (zh) 2012-01-18
EP2399327A1 (fr) 2011-12-28

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