WO2019025452A1 - Arrangement et procédé pour surveiller une ligne de retour pour le courant de traction - Google Patents

Arrangement et procédé pour surveiller une ligne de retour pour le courant de traction Download PDF

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Publication number
WO2019025452A1
WO2019025452A1 PCT/EP2018/070760 EP2018070760W WO2019025452A1 WO 2019025452 A1 WO2019025452 A1 WO 2019025452A1 EP 2018070760 W EP2018070760 W EP 2018070760W WO 2019025452 A1 WO2019025452 A1 WO 2019025452A1
Authority
WO
WIPO (PCT)
Prior art keywords
return line
return
monitoring
current
conductor
Prior art date
Application number
PCT/EP2018/070760
Other languages
German (de)
English (en)
Inventor
Andriy Zynovchenko
Original Assignee
Rail Power Systems Gmbh
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 Rail Power Systems Gmbh filed Critical Rail Power Systems Gmbh
Publication of WO2019025452A1 publication Critical patent/WO2019025452A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M2200/00—Specific problems related to power supply lines not otherwise provided for
    • B60M2200/02—Prevention of theft of valuable metals

Definitions

  • the invention relates to a monitoring device and a method for
  • Monitoring device for monitoring the integrity of the at least two parallel return path connection return conductors.
  • the train return current via the return line back to the rail energy supply system, such as a substation as a traction energy source, out.
  • the return line comprises, according to the standard EN 50122-1: 2011 + AI: 2011 + A2: 2016, all the conductors that form the intended path for the train return current. These ladders can be next to the rails
  • the integrity of the return line must be ensured.
  • the connection of the return line conductors is usually carried out via a return busbar, at which the
  • Return line conductors are connected together with the rail return. In general, a plurality of return line leads are present. In a so-called fourth-rail energy supply concept, the
  • Return conductor busbar the return line conductors are routed to the substation and connected in the substation to a lower side return conductor busbar.
  • the return line conductors are connected in parallel between the track-side return busbar and the lower-side return busbar.
  • Cross-sections of, for example, 500 mm 2 and a high content of high-quality non-ferrous metal, copper or aluminum, these cables are at risk of theft, especially if no continuous burial of the cable is possible or if the access to the above-ground running track return busbar can be obtained with cable connections by unauthorized persons. Besides the loss of high quality
  • Non-ferrous metal and complex repairs may have a cable theft nor the consequences described below.
  • N is the number of return line conductors, which is dimensioned for a current load of 100%.
  • VLDs voltage limiting devices
  • test pliers is known, with which one can measure the grounding resistance of an electrical system.
  • the known test probes are used to verify the integrity of the earthing system in substations.
  • the test probes are suitable and intended for periodic testing of individual conductors.
  • a continuous monitoring of a conductor is not possible in practice with a scholarzange.
  • Another disadvantage is that with a scholarzange not several conductors at the same time can be monitored.
  • a measurement with a test pliers is not possible if the conductors to be tested lead the operating current.
  • the present invention has for its object to provide a monitoring device that allows simultaneous monitoring of multiple parallel connected return line conductors of a return path for the train return current in both the train operating times and the idle rest periods to a
  • the invention has the object, a
  • the return line comprises a plurality of
  • Another object of the invention is to provide a method which allows simultaneous monitoring of multiple return conductors connected in parallel both in the train operating times and the rest periods without interruption or in relatively short time intervals.
  • At least two return conductor connection conductors connected in parallel can be monitored simultaneously both in the train operating times and in the rest periods.
  • Track energy supply system such as the substation, are connected.
  • the monitoring device comprises a current feed device for feeding a monitoring current having a predetermined frequency into at least one of the at least two return conductor connecting conductors connected in parallel and sensors associated with the return line connecting conductors for detecting the monitoring current flowing in the return line conductors.
  • the monitoring device has a signal receiving the signals of the sensors
  • Evaluation device which is designed such that it is checked whether the monitoring current is detected at the predetermined frequency with the sensors, which are assigned to the return line conductors. At a loss of one
  • Return lead terminal or faulty return lead is then closed when the monitor current at the predetermined frequency is not detected with a sensor associated with a return lead terminal.
  • the current injection means for feeding a monitoring current may comprise an AC power source having a periodic, for example a
  • the alternating current may also have any other periodic waveform.
  • the AC should have a fundamental frequency that is not the
  • the frequency of the monitoring current should not be a multiple of a 16.7 Hz frequency. In practice, for example, a frequency of 125 Hz can be used for the monitoring current.
  • the evaluation device has a device for generating a control or message signal, which is designed such that a control or Message signal is generated when with a sensor that is assigned to a return line conductor, the monitoring current is not detected at the predetermined frequency. But it is also possible to generate a control or message signal for the opposite case, that the monitoring current is detected at the predetermined frequency.
  • the control or message signal may also be a signal that contains information indicating the status.
  • the evaluation device has an optical and / or acoustic signal device which receives the control or signaling signals and which is designed such that it is signaled with an optical and / or acoustic signal when a control or signaling signal is generated or a control - or alarm signal is not generated.
  • the optical and / or acoustic signal device can be designed differently.
  • the signaling device can be a screen or have one or more signal lamps or one or more alarm devices (siren or loudspeaker) in order to be able to output warning messages.
  • the control or message signal or the control or message signals can also be transmitted to an existing control or monitoring center.
  • Another embodiment therefore provides a
  • Evaluation device which has a timer with a predetermined delay time, wherein the evaluation device is designed such that the generation of the control or message signal takes place only after the expiration of the delay time, i. not at the moment when the monitoring current is no longer detected.
  • the specified time interval can thus be checked whether an accident is actually present. For example, it can be checked whether the monitoring current does not flow over the entire time interval, so that a short-term interruption due to network transients or glitches can not lead to a false report.
  • the power feed device has at least one inductive current transformer associated with a return line conductor.
  • the magnetic core of a current transformer is preferably designed so that this At the highest operating current of this return line conductor is still in the linear range of its magnetization curve and thus the transmission of the
  • the sensors for detecting the monitoring current are preferably inductive sensors.
  • Rogowski coils have proved to be particularly advantageous.
  • the return line system comprises a return line and the
  • the monitoring device wherein the return line comprises a plurality of return line conductors.
  • the return line conductors are connected in parallel in the return line system according to the invention between a return conductor busbar on the railway line and a return conductor busbar in the railway energy supply system.
  • the monitoring current need only be fed into one of the two return line conductors in the case of two return line conductors, so that the current flows via the one return line conductor, the return busbar at the railway line, the other return line conductor, and the return busbar in the
  • Rail energy system can flow back into the one return line connection conductor.
  • a monitoring current can also be fed into a plurality of return line conductors.
  • the current supply device can have a plurality of preferably inductive current transformers.
  • One embodiment provides a current injection device for feeding a monitoring current at a predetermined frequency into at least two of the return path return conductors present.
  • a railway energy supply system is characterized in that a monitoring current with a predetermined frequency in at least one of at least two return line conductors are fed, the return line conductors are assigned sensors for detecting a current flowing in the return line conductors, and the signals of the sensors are evaluated with an evaluation device such that a loss of a return connection conductor or a faulty return line conductor is concluded, if with a sensor associated with a return line conductor, the monitoring current is not detected at the predetermined frequency.
  • a return system is understood to mean the arrangement comprising at least a portion of the conductors forming the intended path for the web return current and the monitoring device according to the invention.
  • a part of the return line is shown. This part of the return line has a trackside
  • Run rails (rail return) or the power return rail.
  • this part of the return line has a lower-side return busbar 3, to which a traction energy source 4, such as a traction rectifier or traction transformer, leading conductors 5 are connected.
  • a traction energy source 4 such as a traction rectifier or traction transformer
  • Return conductor busbar 3 is a plurality of return line conductors 6 connected in parallel.
  • the return line has four
  • Return line conductors are shown in dashed lines to indicate that at least two return line conductors are provided. But it can also be provided more than four return line conductors.
  • the monitoring device has a power supply device 7, which has an AC power source 8, for example a frequency converter or frequency generator with or without amplifiers, and inductive current transformers 9 associated with the return line conductors 6, with which the alternating current is fed to the return line conductors 6.
  • the return conductor connecting conductor 6 surrounding the current transformer 9 represents the primary winding of the current transformer, while its secondary winding is connected to the AC power source.
  • the magnetic circuit of the current transformer 9 is designed such that it is still in the linear range of its magnetization curve at the highest expected operating current and thus enables the transmission of the monitoring current from the secondary winding in the primary winding.
  • the alternating current has a given frequency, which in the present
  • Embodiment 125 Hz. This frequency differs from the frequencies that AC currents around the return line conductors usually have.
  • two return line connecting conductors 6 are each assigned an inductive current transformer 9, so that a monitoring current with a predetermined frequency is fed into the two return line conductors 6.
  • This alternating current can flow in a circuit that of the over the
  • Return conductor busbars 1, 3 connected return line conductors 6 is formed.
  • the feeding of the monitoring current into two return line conductors 6 improves the redundancy and improves the quality of the measuring signals.
  • the feeding of the monitoring current can also be done only in one of the return line conductor 6.
  • the monitoring device has an evaluation device 10, which has inductive sensors 11 assigned to the individual return connection conductors 6. Instead of just a single evaluation device having a plurality of inductive sensors, it is also possible to provide a plurality of evaluation units with only one sensor or a plurality of sensors.
  • the inductive sensors 11 are preferably air coils which have no ferromagnetic core, in particular Rogowski coils.
  • the evaluation device 10 is designed such that it is checked whether the monitoring current is detected at the predetermined frequency with the inductive sensors 11, which are assigned to the return line connecting conductors 6. At a loss or a faulty return line conductor 6, the evaluation device 10 closes when with a sensor 11, which is assigned to a return line conductor, the monitoring current is not detected at the predetermined frequency.
  • Evaluation device 10 may have one or more filters in order to be able to filter out the alternating current with the predetermined frequency.
  • the filters may have one or more filters in order to be able to filter out the alternating current with the predetermined frequency.
  • Evaluation device 10 have the individual sensors 11 associated comparators, which compare the measured with the sensors 11 currents with reference values. If the AC measured in the respective return lead 6 is smaller than the reference value, it is concluded that the return lead is no longer present or defective.
  • the evaluation device 10 has a device 10A, which is designed such that in this case a control or message signal is generated.
  • the evaluation device 10 has a timer 10B, which specifies a specific delay time. The control or signaling signal is generated only when the current measured in the respective return line conductor 6 is below the reference value over the entire time duration which the timer 10B specifies. This rules out that short-term disturbances lead to false alarms.
  • the evaluation device 10 has an optical and / or acoustic signal device 10C.
  • the signaling device 10C receives the control or
  • Return conductor 6 may be displayed on a screen, for example become.
  • the signal device IOC can, for example, an acoustic
  • control or message signal or the control or message signals can also be forwarded via a signal line or transmission link 12 to a control or monitoring center, not shown in the figure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

L'invention concerne un arrangement de surveillance et un procédé pour surveiller l'intégrité d'au moins deux conducteurs de raccordement de ligne de retour (6) branchés en parallèle d'une ligne de retour pour le courant de traction d'une installation d'alimentation en énergie de traction. L'invention concerne en outre un système de ligne de retour comprenant une ligne de retour et un arrangement de surveillance pour la surveillance de l'intégrité d'au moins deux conducteurs de raccordement de ligne de retour (6) branchés en parallèle de la ligne de retour. Le système de surveillance selon l'invention comprend un dispositif d'injection de courant (7) destiné à injecter un courant de surveillance ayant une fréquence prédéfinie dans au moins l'un des au moins deux conducteurs de raccordement de ligne de retour (6) branchés en parallèle ainsi que des capteurs (11) associés aux conducteurs de raccordement de ligne de retour (6) destiné à détecter le courant qui circule dans les conducteurs de raccordement de ligne de retour. Le système de surveillance comprend en outre un dispositif d'interprétation (10) qui reçoit les signaux des capteurs (11), lequel est configuré de telle sorte qu'un contrôle est effectué pour vérifier si le courant de surveillance ayant la fréquence prédéfinie est détecté avec les capteurs qui sont associés aux conducteurs de raccordement de ligne de retour. Une perte d'un conducteur de raccordement de ligne de retour (6) ou un conducteur de raccordement de ligne de retour défaillant, par exemple en raison d'un vol de câble ou d'une rupture de câble, est déduit si le courant de surveillance ayant la fréquence prédéfinie n'est pas détecté avec un capteur (11) qui est associé à un conducteur de raccordement de ligne de retour (6).
PCT/EP2018/070760 2017-08-03 2018-07-31 Arrangement et procédé pour surveiller une ligne de retour pour le courant de traction WO2019025452A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017007252.3 2017-08-03
DE102017007252.3A DE102017007252B3 (de) 2017-08-03 2017-08-03 Überwachungsvorrichtung und Verfahren zur kontinuierlichen und vom Bahnrückstromfluss unabhängigen Überwachung der Integrität der Rückleitungsanschlussleiter einer Rückleitung für den Bahnstrom einer Bahnenergieversorungsanlage und Rückleitungs-System mit einer Rückleitung und einer Überwachungsvorrichtung zur Überwachung der Integrität der Rückleitungsanschlussleiter der Rückleitung

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WO2019025452A1 true WO2019025452A1 (fr) 2019-02-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110562101A (zh) * 2019-09-19 2019-12-13 江苏新绿能科技有限公司 一种接触网电能质量以及能量利用效率优化方法
WO2022083175A1 (fr) * 2020-10-23 2022-04-28 北京全路通信信号研究设计院集团有限公司 Dispositif de circuit de voie externe avec fonction d'acquisition de tension sans contact

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUE060795T2 (hu) 2019-11-11 2023-04-28 Rail Power Sys Gmbh Sínpálya-energiaellátó rendszer és eljárás sínpályaáramhoz való visszavezetés legalább egy áramvisszavezetõ csatlakoztató vezetékének integritása ellenõrzéséhez
CN112327216B (zh) * 2020-10-30 2023-04-07 广东至合交通科技有限公司 一种基于边缘计算的电缆健康状态评估装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2071396U (zh) * 1989-12-27 1991-02-13 郅孝生 变阻式电力线防盗报警器
WO2011079968A2 (fr) * 2009-12-29 2011-07-07 Harald Ruediger Dispositif de surveillance pour installations de lignes de contact ou lignes aérienne commutées hors tension
DE102013005901A1 (de) 2012-09-18 2014-03-20 Bayerische Kabelwerke Ag Erdungskabel, insbesondere Bahnerdungskabel zur Erdung von Eisenbahneinrichtungen
EP2862744A2 (fr) 2013-10-17 2015-04-22 Witt IndustrieElektronik GmbH Procédé et dispositif de surveillance d'un câble de conducteur de retour d'une voie équipée de deux rails
DE102014111734A1 (de) 2014-08-18 2016-02-18 Bayerische Kabelwerke Ag Überwachungssystem für ein Stromkabel, Stromkabel für ein solches Überwachungssystem sowie Verfahren zur Überwachung eines Stromkabels mit Hilfe eines solchen Überwachungssystems
US9417268B2 (en) 2011-12-23 2016-08-16 Chauvin Arnoux Earth/ground clamp for measuring earth resistance of electrical installations

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2071396U (zh) * 1989-12-27 1991-02-13 郅孝生 变阻式电力线防盗报警器
WO2011079968A2 (fr) * 2009-12-29 2011-07-07 Harald Ruediger Dispositif de surveillance pour installations de lignes de contact ou lignes aérienne commutées hors tension
US9417268B2 (en) 2011-12-23 2016-08-16 Chauvin Arnoux Earth/ground clamp for measuring earth resistance of electrical installations
DE102013005901A1 (de) 2012-09-18 2014-03-20 Bayerische Kabelwerke Ag Erdungskabel, insbesondere Bahnerdungskabel zur Erdung von Eisenbahneinrichtungen
EP2862744A2 (fr) 2013-10-17 2015-04-22 Witt IndustrieElektronik GmbH Procédé et dispositif de surveillance d'un câble de conducteur de retour d'une voie équipée de deux rails
DE102014111734A1 (de) 2014-08-18 2016-02-18 Bayerische Kabelwerke Ag Überwachungssystem für ein Stromkabel, Stromkabel für ein solches Überwachungssystem sowie Verfahren zur Überwachung eines Stromkabels mit Hilfe eines solchen Überwachungssystems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110562101A (zh) * 2019-09-19 2019-12-13 江苏新绿能科技有限公司 一种接触网电能质量以及能量利用效率优化方法
WO2022083175A1 (fr) * 2020-10-23 2022-04-28 北京全路通信信号研究设计院集团有限公司 Dispositif de circuit de voie externe avec fonction d'acquisition de tension sans contact

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