EP0720539B1 - Procede et systeme permettant de detecter et de signaler l'etat electrique de dispositifs de protection contre les claquages - Google Patents

Procede et systeme permettant de detecter et de signaler l'etat electrique de dispositifs de protection contre les claquages Download PDF

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Publication number
EP0720539B1
EP0720539B1 EP94926918A EP94926918A EP0720539B1 EP 0720539 B1 EP0720539 B1 EP 0720539B1 EP 94926918 A EP94926918 A EP 94926918A EP 94926918 A EP94926918 A EP 94926918A EP 0720539 B1 EP0720539 B1 EP 0720539B1
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EP
European Patent Office
Prior art keywords
earth
fuse
evaluation
condition
devices
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Expired - Lifetime
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EP94926918A
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German (de)
English (en)
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EP0720539A1 (fr
Inventor
Wolfgang Kunze
Dietmar KÄSCH
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Elpro AG
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Elpro AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/12—Means structurally associated with spark gap for recording operation thereof

Definitions

  • Voltage breakdown fuses are usually used between such parts which carry different potential. If a specified voltage, which can cause a dangerous body current, is exceeded, these respond and establish a metallic, electrically conductive connection between the rail of the direct current path (railway earth) and the rail of an alternating current path or bridge parts (water earth). According to the existing regulations, this condition, which in turn significantly increases the risk of stray current corrosion, may only be maintained for a short time. The operators of such DC railways must therefore continuously monitor the condition of the voltage breakdown fuses and, in the event of such a voltage breakdown fuse responding, the required electrical isolation immediately, e.g. B. by replacing the defective fuse to restore.
  • the state of the voltage breakdown protection is currently checked visually by regular inspections of the route, which is associated with a relatively high personnel expenditure.
  • Berlin S-Bru this is described in "The rail energy supply of the Berlin S-Bru", electric trains 4/1992 p. 121.
  • Another disadvantage is that an uncontrolled stray current can flow between the inspection passes.
  • Devices are also customary in which a current relay with a memory function is arranged in series for voltage breakdown protection, which works reversibly in a predetermined current range and which reports a message about a defective voltage breakdown protection to a control center.
  • the disadvantage of these devices is that the message is made via separate message lines and the effort for the required power supply of the memory relay can be considerable.
  • the object of the invention is to provide a method and an arrangement which allow the electrical state of the voltage breakdown devices, which are arranged on a section or a section of a direct current path to protect against dangerous body currents, to be recorded and evaluated at a control center at any time.
  • this object is achieved in that the potential difference between rail potential (railroad earth) and earth potential (water earth) is detected on the existing voltage breakdown devices, which are arranged along the route of a direct current path, and this state at defined times or at defined time intervals with the associated one Address can be transmitted in a suitable manner to a control center, where an evaluation of the states of the individual voltage breakdown safeguards takes place and suitable measures for eliminating detected errors can be initiated immediately.
  • the size of a flowing current at the voltage breakdown fuse can also be used as a measure of the electrical state.
  • an arrangement which consists of a signaling device, which is arranged directly on the existing voltage breakdown protection, and an evaluation device.
  • the signaling device essentially consists of a detection module, a clock module, a power supply, a clock and preferably a coded transmitter.
  • the detection module detects the potential difference between the rail potential (railway earth) and the earth potential (water earth), which is always present via a non-defective voltage breakdown fuse. This potential difference can assume both polarities in relation to the earth potential (water earth).
  • a potential difference is determined by the detection module, this stimulates a clock module, which in turn preferably clocks a coded transmitter, which now transmits a clocked coded signal via the electrical state and the address of the voltage breakdown protection to an evaluation device.
  • the transmission is preferably carried out by means of a coded transmitter to an evaluation device located nearby, which in turn is equipped with a receiver.
  • a clock is used to control and detect and transmit the potential difference across the voltage breakdown fuse only at defined times or at defined time intervals.
  • the evaluation device detects and stores the electrical state and the associated address of a certain number of voltage breakdown fuses. After the evaluation, the memories of the evaluation device are reset in order to be free to receive new, current information.
  • the detection module does not detect a potential difference across the voltage breakdown fuse detected.
  • the transmission of a signal from the signaling device to the evaluation device is omitted and, as a result of the evaluation, the necessary actions for eliminating the error can be initiated immediately. It also does not send a signal if only one module of the signaling device, for. B. the power supply or the clock has failed, so that a defect is recognized immediately and can be eliminated in a targeted manner.
  • An advantage of this solution according to the invention is that current information about the electrical state of the voltage breakdown protections and the functionality of the signaling devices is available at all times. It is furthermore advantageous that, due to the easy assembly of the signaling device, the already existing voltage breakdown fuses can be used and no additional lines have to be laid when choosing a radio transmission.
  • the rails 1 of a direct current path are connected to their ground 3 via the voltage breakdown fuse 2 to the earth potential / water earth 4, for. B. tied up bridge potential.
  • the signaling device 5 is connected to the railway earth 3 and the water earth 4 and essentially consists of a detection module 6, a power supply 9, a clock 11, a clock module 7 and a transmitter 8.
  • the detection module 6 is directly connected to the voltage breakdown protection 2 with the rail earth 3 and the water earth 4 connected and detects the potential difference between these two connections and triggers when it falls below a predetermined, always existing in practical operation, a command to clock the clock module 7.
  • the circuit of the clock module 7 oscillates freely, with a basic frequency and pulse duty factor that can be set in defined ranges.
  • the output signal of the clock module 7 actuates the, preferably electronically designed, switch 13 in this predetermined clock, which thus clocks the coded transmitter 8.
  • the transmitter 8 reports the location / address, by means of the coding, and the electrical state of the voltage breakdown protection 2 to an evaluation device.
  • the detection and reporting of the state of the voltage breakdown protection is not carried out continuously, but rather at fixed times or at defined time intervals for a limited period of time. This is achieved in that a, preferably electronic, clock 11, which is fed by its own power supply (battery) 10, switches the power supply (eg battery) 9 of the signaling device 5 on and off via the switch 12.
  • the evaluation device which receives the signal sent by the signaling device 5, is equipped with a mobile receiver and is preferably arranged on a train that drives past the signaling devices 5 on the tracks 1.
  • the reporting device 5 is preferably switched on by the clock 11 at a time and for a period of time which corresponds to the passage of the train and is coordinated with the schedule.
  • the clock frequency or the respective duty cycle of the clock modules 7 of the individual reporting devices 5 is selected differently.
  • the multi-channel receiver of the evaluation device assigns the received signals to the respective channel concerned.
  • the signals are saved with their address for further evaluation.
  • the memories are reset manually in order to be free to receive new, current information.
  • the detection module 6 of a signaling device 5 detects no potential difference between railroad earth and water earth, or if this is below the specified minimum difference, the clock module 7 is not stimulated by the detection module 6. This also means that the transmitter 8 is not clocked by the switch 13 and is switched off this signaling device 5 does not transmit a signal to the receiver of the evaluation device. The receiver reports no signal on the relevant channel. This signaling state indicates that the voltage breakdown fuse 2 in question has responded.
  • the transmitter clock frequency is determined by the transmitter range, the speed of the mobile receiver (train speed) and by the number of desired programs .
  • the state of charge of the power supply 9 of the signaling device 5 can also be transmitted in a suitable manner with the signal from the signaling device 5 to the evaluation device, so that the respective power supply 9 can be replaced in good time.
  • the evaluation devices with the associated receivers are designed to be transportable, they are preferably carried in the driver's cab of the train for recording the messages of the individual message devices 5 along a route and then handed over to the responsible personnel for evaluating the results. If more signaling devices 5 are installed on a route than the evaluation device has storage spaces, several evaluation units can also be carried on a train. It can thus be ensured that the evaluation devices have an optimal number can be executed from memory locations and still a variety of reporting devices can be detected while driving.
  • the signaling devices 5.1, 5.2, 5.3,.. Evaluation devices A1, A2, A3 installed, each of which is equipped with a receiver.
  • a group of signaling devices 5.1,..., 5.9 is assigned to each evaluation device A1, A2, A3, so that the evaluation devices are within the range of the transmitters 8 of the relevant reporting devices.
  • the first group of reporting devices 5.1, 5.2, 5.3 is assigned to evaluation device A1, a second group of reporting devices 5.4, 5.5, 5.6, 5.7 to evaluation device A2 and a third group 5.8, 5.9 to evaluation device A3.
  • the signals of the signaling devices are coded in such a way that they are only evaluated and stored by the assigned evaluation device. For example, the status messages of the signaling devices 5.3 or 5.8 are ignored by the evaluation device A2.
  • Transmitters S1, S2, S3 with a larger range are coupled to the evaluation devices A1, A2, A3, which take over the status reports of the respectively assigned reporting devices 5.1,..., 5.9 and transmit them to a central station Z.
  • the transmission from the evaluation devices A1, A2, A3 to the higher-level control center Z or a sub-control center UZ can take place directly or via one or more of the other evaluation devices A1, A2, A3.
  • the message from the evaluation device A3 can be received via the transmitter S3 as an additional input message in the evaluation device A2 and processed with the messages from the reporting devices 5.4, ..., 5.7 and transmitted via the transmitter S2 as an additional message to the evaluation device A1 will.
  • the status messages of all signaling devices 5.1,..., 5.9 are transmitted from the transmitter S1 to the control center, so that the status of all or individual groups of the voltage breakdown safeguards to be monitored can be evaluated in one control center or in several sub-control centers.
  • all memories of the alarm devices 5.1, ..., 5.9 are restored reset to be free for the acquisition of new current status messages.
  • the information stored in the stationary evaluation devices A1, A2, A3 can also be transmitted to the central office via existing telecontrol or postal lines.
  • transmission networks to sub-centers and a center are to be set up. Since several stationary receivers are to be arranged along each route, this embodiment is relatively complex, but allows a higher degree of automation.

Landscapes

  • Train Traffic Observation, Control, And Security (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Claims (5)

  1. Procédé pour déterminer et signaler l'état électrique de dispositifs de protection contre les claquages, qui sont disposés sur les rails de voies à courant continu le long de la ligne, afin de protéger contre les mises en contact accidentelles avec le corps, aux endroits précis où la différence de potentiel entre le potentiel du rail (terre voie) et la terre ouvrage (potentiel de terre/terre eau) peut atteindre des valeurs non permises (dangereuses), la différence de potentiel entre terre voie et terre eau, directement sur le dispositif de protection contre les claquages, étant déterminée comme mesure pour l'état du dispositif de protection contre les claquages, caractérisé en ce que la différence de potentiel est calculée constamment ou à intervalles de temps définis et l'état du dispositif de protection contre les claquages (2) est analysé, et que cet état est transmis, à des moments prédéfinis ou à des intervalles de temps définis, au moyen d'émetteurs radio codés (8), à un dispositif d'analyse qui mémorise l'état respectivement transmis du dispositif de protection contre les claquages avec l'adresse correspondante, la mémorisation étant remise à zéro une fois l'analyse effectuée afin d'être libre pour de nouvelles informations.
  2. Système pour la mise en oeuvre du procédé selon la revendication 1, la différence de potentiel effective par un dispositif de protection contre les claquages, existant entre terre voie et terre eau, étant détectée, caractérisé en ce que, un dispositif de signalisation (5) détecte la différence de potentiel effective dans un module de détection (6) si un dispositif d'alimentation en courant (9) assume l'alimentation du module de détection (6) et un module de synchronisation (7) par une horloge (11), à des moments déterminés ou à des intervalles de temps définis, par la mise en circuit d'un commutateur (12), et que, en cas de présence d'une différence de potentiel prédéfinie, le module de synchronisation (7) est mis en circuit par le module de détection (6) de telle sorte qu'un commutateur (13) relie un émetteur (8) synchronisé avec le dispositif d'alimentation en courant (9) de façon à transmettre un signal synchronisé et codé (14) à un dispositif d'analyse, et à mémoriser ce signal avec l'adresse correspondante jusqu'à l'analyse et la remise à zéro.
  3. Système selon la revendication 2, caractérisé en ce que le dispositif d'analyse, qui est couplé avec un récepteur et conçu d'une manière mobile, est entraîné sur un train qui fait le trajet et qui, en passant, reçoit les signalisations des dispositifs de signalisation (5) et les mémorise jusqu'à l'analyse.
  4. Système selon la revendication 2 et 3, caractérisé en ce que les moments et la durée de la détection et de la signalisation de l'état électrique du dispositif de protection contre les claquages (2) sont coordonnés avec les horaires des trains par une programmation correspondante de l'horloge (11) de telle sorte qu'ils concordent avec le passage du train qui entraîne le dispositif d'analyse et que la fréquence de synchronisation du synchroniseur (7) est accordée la vitesse du train ainsi qu' la portée de l'émetteur (8).
  5. Système selon la revendication 2, caractérisé en ce qu'un ou plusieurs dispositifs d'analyse (A1, A2, A3) sont disposés d'une manière stationnaire le long du trajet, auxquels sont affectés respectivement un ou plusieurs dispositifs de signalisation (5.1, 5.2, ... 5.9), en fonction de la portée de leur émetteur (8), dont les signalisations sont mémorisées par le dispositif d'analyse respectivement affecté (A1 ou A2 ou A3) et transmis une centrale supérieure (Z) ou sous-centrale (UZ) pour une analyse plus poussée, soit directement par l'intermédiaire d'un émetteur d'une plus grande portée (S1, S2, S3), couplé avec le dispositif d'analyse respectif, ou bien par l'intermédiaire d'un ou de plusieurs des dispositifs d'analyse restants (A1, A2, A3).
EP94926918A 1993-09-22 1994-09-05 Procede et systeme permettant de detecter et de signaler l'etat electrique de dispositifs de protection contre les claquages Expired - Lifetime EP0720539B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4332888 1993-09-22
DE4332888A DE4332888C2 (de) 1993-09-22 1993-09-22 Verfahren und Anordnung zur Ermittlung und Meldung des elektrischen Zustandes von Spannungsdurchschlagsicherungen
PCT/EP1994/002938 WO1995008453A1 (fr) 1993-09-22 1994-09-05 Procede et systeme permettant de detecter et de signaler l'etat electrique de dispositifs de protection contre les claquages

Publications (2)

Publication Number Publication Date
EP0720539A1 EP0720539A1 (fr) 1996-07-10
EP0720539B1 true EP0720539B1 (fr) 1997-03-26

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EP94926918A Expired - Lifetime EP0720539B1 (fr) 1993-09-22 1994-09-05 Procede et systeme permettant de detecter et de signaler l'etat electrique de dispositifs de protection contre les claquages

Country Status (8)

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EP (1) EP0720539B1 (fr)
AT (1) ATE150710T1 (fr)
CZ (1) CZ79696A3 (fr)
DE (2) DE4332888C2 (fr)
HU (1) HUT75407A (fr)
PL (1) PL313523A1 (fr)
SK (1) SK37496A3 (fr)
WO (1) WO1995008453A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011232A1 (de) 2007-03-06 2008-09-11 Siemens Ag Verfahren zum Abfragen eines Messwertes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2170171A1 (fr) * 1996-02-23 1997-08-24 Cyprien Gauthier Detection de l'emplacement d'un rail rompu
DE10041716A1 (de) * 2000-08-25 2002-03-07 Abb Research Ltd Verfahren zur Gewinnung elektrischer Energie entlang von Schienenwegen
DE10236943B4 (de) 2002-08-12 2005-11-17 Siemens Ag Verfahren zum Erkennen von Gefährdungen durch Streuströme
ITRM20100510A1 (it) * 2010-10-01 2012-04-02 Mesar S R L Sistema limitatore di tensione per circuiti di terra di protezione nella trazione elettrica con capacita di autodiagnosi autoalimentazione e trasmissione a distanza delle informazioni raccolte e relativo metodo
CN103373247A (zh) * 2012-04-19 2013-10-30 上海拓及轨道交通设备有限公司 一种钢轨电位保护装置
CZ2017143A3 (cs) * 2017-03-15 2018-08-08 Saltek S.R.O. Omezovač napětí s přepěťovou ochranou
DE102018001112B3 (de) 2018-02-07 2019-03-07 Elpro Gmbh Verfahren und Vorrichtung zur Überwachung elektrischer Leitungen und Verbindungen in Gleichrichterunterwerken und den zugehörigen Streckenabschnitten elektrischer Bahnen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1790211C3 (de) * 1968-09-28 1975-01-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Spannungssicherung für elektrische Bahnen
DE2533182B2 (de) * 1975-07-24 1978-01-12 Siemens AG, 1000 Berlin und 8000 München Schaltung zum feststellen ausgeloester sicherungen in stromversorgungsanlagen
DE3312153A1 (de) * 1983-04-02 1984-10-04 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co KG, 8510 Fürth Verfahren und schaltungsanordnung zur tastenabfrage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011232A1 (de) 2007-03-06 2008-09-11 Siemens Ag Verfahren zum Abfragen eines Messwertes

Also Published As

Publication number Publication date
DE4332888C2 (de) 1996-04-11
DE59402252D1 (de) 1997-04-30
WO1995008453A1 (fr) 1995-03-30
CZ79696A3 (en) 1996-07-17
HU9600544D0 (en) 1996-04-29
SK37496A3 (en) 1996-10-02
ATE150710T1 (de) 1997-04-15
PL313523A1 (en) 1996-07-08
EP0720539A1 (fr) 1996-07-10
HUT75407A (en) 1997-05-28
DE4332888A1 (de) 1995-03-30

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