CN102209648A - Device and method for limiting the rail potential in a DC railway - Google Patents

Device and method for limiting the rail potential in a DC railway Download PDF

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Publication number
CN102209648A
CN102209648A CN2009801442247A CN200980144224A CN102209648A CN 102209648 A CN102209648 A CN 102209648A CN 2009801442247 A CN2009801442247 A CN 2009801442247A CN 200980144224 A CN200980144224 A CN 200980144224A CN 102209648 A CN102209648 A CN 102209648A
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CN
China
Prior art keywords
track
switchgear
control unit
connection lead
threshold value
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Granted
Application number
CN2009801442247A
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Chinese (zh)
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CN102209648B (en
Inventor
格德.海因
乔格.库德里夫斯基
亚历山大.肖姆伯格
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Siemens AG
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Siemens AG
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Publication of CN102209648A publication Critical patent/CN102209648A/en
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Publication of CN102209648B publication Critical patent/CN102209648B/en
Expired - Fee Related legal-status Critical Current
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    • 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
    • B60M5/02—Means for reducing potential difference between rail and adjacent ground
    • 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
    • H02H3/14—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 occurrence of voltage on parts normally at earth potential
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device

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

Abstract

The invention relates to a device and a method for limiting the rail potential in a DC railway, a low-impedance link (8) being arranged between the rail (1) and the ground (2) below the structure. A switchgear (7) which is connected to a control unit (4) via a control line is connected to the link (8), while the control unit (4) is connected to a voltmeter (3) that is arranged between the rail (1) and the ground (2) below the structure. According to the invention, the switchgear (7) comprises a contactor coil (6) that is connected to a dynamic control unit (4). The switchgear (7) closes and thus connects the link (8) in a conducting manner when the voltage between the rail (1) and the ground (2) below the structure exceeds a threshold value.

Description

In the direct current railway, be used to limit the apparatus and method of track electromotive force
Technical field
The present invention relates to a kind of device that in the direct current railway, is used to limit the track electromotive force, wherein, low-impedance connection lead is arranged between track and the building ground, and wherein, in connection lead, insert a switchgear, this switchgear is connected with control unit via control line, and this control unit is connected with the volt meter that is provided with between track and building ground.
The invention still further relates to and a kind ofly in the direct current railway, utilize this device to limit the method for track electromotive force.
Background technology
In the direct current railway, the track electromotive force does not allow to surpass predetermined maximum value, so that ensure that touching track is hazard free for the people.Advised already thus,, then connected connection from track to building ground if the track electromotive force is too high.Adopt mechanical switch equipment for this reason, promptly so-called short circuiting device, these short circuiting devices must satisfy high request.For example, must be able to make this short circuiting device in one hour break-make above 10 times.In addition, it must stand the intensity of current of 400 peaces and switch in 250 milliseconds.At this, actual handoff procedure must also will carry out quickly because in 250 milliseconds, yet have to be measured at voltage between the ground of track and building, with threshold and at too high voltage conditions lower-pilot short circuiting device.
Because switchgear commonly used reaction is too slow, up to the present need to utilize cost high and expensive components (for example thyristor) construct this switchgear.
Summary of the invention
The technical problem to be solved in the present invention is, is provided at a kind of device and a kind of method that are used to limit the track electromotive force in the direct current railway, its do not have expensive component but however still timely and very fast speed stop high orbit electromotive force for people's danger.
Solve the technical matters that appropriate device is provided as follows according to the present invention, make switchgear have the contactless coil that is connected with dynamic control unit (Ansteuereinheit).
Realized following advantage by contactless coil: contactless coil can not have under the condition of equipment cost fast and cabinet switch equipment reliably.Realized following special advantage by the dynamic control convenience that is connected with contactless coil: discern a too high voltage very fast and also activate contactless coil then immediately.
For example under the condition of the connection lead that interrupts, encourage contactless coil, and contactless coil is corresponding to the deenergization unit that is connected with control unit via control line.Realized following special advantage by the contactless coil of connecting by this way: but at high speed and failure-free are connected switchgear under the situation that does not have other additional parts.This is inter alia, as long as contactless coil is by electric current, with regard to cut-off switch equipment.If between track and building ground, have the intensity of current that reduces under the excessive voltage condition on coil in short time, then by means of mechanical closure unit (for example mechanical spring) close switch equipment.So derive the high orbit electromotive force of undesirable danger.
For example, in connection lead, insert an amperemeter/ammtr, this amperemeter/ammtr via control unit with one in the supply line of contactless coil the bonded assembly relay be connected.Obtain the advantage of adding thus, as long as electric current also flows to building ground by connection lead from track, contactless coil just keep no current and thus switchgear keep disconnecting.That is,, additionally also come master cock equipment by this amperemeter/ammtr in connection lead not only by volt meter.Avoid too high and dangerous track electromotive force with simple especially device thus.
Solved the technical matters that is provided at the suitable method that is used to limit the track electromotive force in the direct current railway as follows by described device: if the voltage between track and building ground surpasses threshold value, then switchgear is closed and be thus connected line and switch to conduction.Because adopted according to device of the present invention, this is possible in the very short time advantageously.
For example, switchgear remains closed at least one preset time interval and is lower than threshold value up to the intensity of current in connection lead in addition.Thereby obtain following advantage, cut-off switch equipment once more not too early, and especially avoided causing the fast speed closed and disconnected that replaces that damages.If the voltage between the ground has surpassed threshold value at track and building, close switch equipment then, and remain closure for predetermined Fixed Time Interval.If the intensity of current when this time gap finishes in connection lead also is not lower than threshold value, switchgear continues to remain closed.If intensity of current is lower than its threshold value, cut-off switch equipment then.
For example, if the voltage between the ground has surpassed the time length of 0.5 millisecond of threshold value at track and building, then at the latest after switchgear closure in 19 milliseconds.Obtain advantage thus, in less than 20 milliseconds, derive too high track electromotive force.So can not produce harm to the people.In addition, do not need expensive component for this device.
By the following advantage of the special acquisition of these apparatus and method, utilize simple device in the very short time, can reduce the track electromotive force, according to the present invention so that eliminating is to people's harm.
Description of drawings
Further specify the apparatus and method that in the direct current railway, are used to limit the track electromotive force in conjunction with the accompanying drawings.
Fig. 1 shows rough schematic circuit diagram for this device.
The specific embodiment
Volt meter 3 is between the track 1 and building ground 2 of direct current railway, volt meter 3 is connected with the deenergization unit 5 of contactless coil 6 via dynamic control unit 4, as long as contactless coil 6 is by electric current, its switchgear 7 that just remains on the connection lead 8 between track 1 and the building ground 2 disconnects.Contactless coil 6 is similar to work of electromagnet at this.Can be in volt meter 3 with voltage and the threshold of measuring, as long as volt meter 3 has been confirmed too high voltage, then contactless coil 6 is switched to no current by control unit 4 and deenergization unit 5, so that close switch equipment 7, for example by mechanical spring.So undesirable track electromotive force can flow out to building ground 2 via connection lead 8 from track 1.Amperemeter/ammtr 9 is positioned on the connection lead 8, and amperemeter/ammtr 9 is connected in the supply line of the contactless coil of being exported by power supply 11 6 with relay 10 via control unit 4.By control unit 4 and deenergization unit 5, as long as the voltage of measuring by volt meter 3 surpasses threshold value, then at first discharge contactless coil 6 for a predetermined Fixed Time Interval, and close switch equipment 7 thus.When finishing, this time gap checks whether the intensity of current of being measured by amperemeter/ammtr 9 has been lower than threshold value.If do not reach, then continue to keep discharging contactless coil 6, and remain closed switchgear 7.Be lower than threshold value up to intensity of current, cut-off switch equipment 7.
As the control unit 4 of dynamic control convenience and deenergization unit 5 make following may: if the voltage of measuring from volt meter 3 between track 1 and building ground 2 surpasses the time length of 0.5 millisecond of threshold value, then at the latest after close switch equipment 7 in 19 milliseconds, and derive undesirable high orbit electromotive force.Though be simple parts, produce ultra-safe circuit.In addition, this device is littler than the device that up to the present uses, thereby this device needs littler position and productive costs lower.

Claims (6)

1. device that in the direct current railway, is used to limit the track electromotive force, wherein, low-impedance connection lead (8) is set between track (1) and the building ground (2), and wherein, in described connection lead (8), insert switchgear (7), described switchgear is connected with control unit (4) via control line, described control unit is connected with the volt meter (3) that is provided with between described track (1) and building ground (2), it is characterized in that described switchgear (7) has a contactless coil (6) that is connected with dynamic control unit (4).
2. device according to claim 1, it is characterized in that, excitation described contactless coil (6) under the condition of the connection lead (8) that interrupts, and described contactless coil (6) is corresponding to the deenergization unit (5) that is connected with described control unit (4) via control line.
3. device according to claim 1 and 2, it is characterized in that, insert an amperemeter/ammtr (9) in described connection lead (8), described amperemeter/ammtr is connected with the relay that inserts in the supply line of contactless coil (6) (10) via described control unit (4).
4. a utilization is according to the method that is used to limit the track electromotive force in the direct current railway of each described device in the claim 1 to 3, it is characterized in that, if the voltage between track (1) and building ground (2) surpasses threshold value, switchgear (7) closure then, and be thus connected line (8) and switch to conduction.
5. method according to claim 4 is characterized in that, described switchgear (7) remains closed at least one preset time at interval, and is lower than threshold value up to the intensity of current in described connection lead (8) in addition.
6. require 4 or 5 described methods according to aforesaid right, it is characterized in that, if the voltage between track (1) and building ground (2) has surpassed the time length of 0.5 millisecond of threshold value, then described switchgear (7) at the latest after closure in 19 milliseconds.
CN200980144224.7A 2008-09-30 2009-07-24 Device and method for limiting the rail potential in a DC railway Expired - Fee Related CN102209648B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008049706A DE102008049706A1 (en) 2008-09-30 2008-09-30 Device and method for limiting the rail potential in a DC track
DE102008049706.1 2008-09-30
PCT/EP2009/059566 WO2010037578A1 (en) 2008-09-30 2009-07-24 Device and method for limiting the rail potential in a dc railway

Publications (2)

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CN102209648A true CN102209648A (en) 2011-10-05
CN102209648B CN102209648B (en) 2014-07-23

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EP (1) EP2328776A1 (en)
CN (1) CN102209648B (en)
DE (1) DE102008049706A1 (en)
WO (1) WO2010037578A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104837670A (en) * 2013-01-10 2015-08-12 西门子公司 Measurement arrangement and method for detecting an ac voltage as a rail potential in dc railway systems and use of the measurement arrangement
CN108819801A (en) * 2018-07-05 2018-11-16 苏州大学 A kind of rail potential inhibition system and method
CN109941154A (en) * 2019-03-25 2019-06-28 中国矿业大学 A kind of system and method limiting rail voltage

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20100510A1 (en) * 2010-10-01 2012-04-02 Mesar S R L VOLTAGE LIMITER SYSTEM FOR PROTECTION EARTH CIRCUITS IN ELECTRIC TRACTION WITH SELF-DIAGNOSTIC CAPACITY SELF-SUPPLY AND REMOTE TRANSMISSION OF COLLECTED INFORMATION AND RELATIVE METHOD
DE102014211792A1 (en) * 2014-06-19 2016-01-07 Siemens Aktiengesellschaft Railway feed rectifier and method for operating a web feed rectifier
JP6502763B2 (en) * 2015-06-29 2019-04-17 東日本旅客鉄道株式会社 Ground fault protection device and ground fault protection system
CN107472088A (en) * 2017-08-11 2017-12-15 南京铁道职业技术学院 A kind of protection device and its method for rail current potential of convenient installation
CN109066643B (en) * 2018-09-29 2024-01-30 成都中工电气工程有限公司 Rail potential limiting device
JP7198627B2 (en) * 2018-10-12 2023-01-04 株式会社日立製作所 Rail vehicle and power control method for rail vehicle

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DE755291C (en) * 1941-11-22 1953-10-05 Siemens Schuckertwerke A G Device for quickly connecting two line systems in the event of an impermissibly high differential voltage between them
FR2534080B1 (en) * 1982-09-30 1985-11-08 Ferraz & Cie Lucien APPARATUS FOR AUTOMATIC EARTHING OF ACCIDENTALLY LIVE STRUCTURES
CA1307822C (en) * 1986-10-01 1992-09-22 Donald A. Bisson Floating negative automatic grounding switch
CN2154490Y (en) * 1993-03-13 1994-01-26 蒋雅生 Electricity leakage alarm recording instrument for railway passenger tain
DE4402022A1 (en) * 1993-12-07 1995-06-08 Elpro Ag Overvoltage protection device for electrified railway
EP0806071B1 (en) * 1995-01-24 1998-12-09 Elpro BahnstromAnlagen GmbH Overvoltage protector
EP1196975A1 (en) * 1999-07-16 2002-04-17 Siemens Aktiengesellschaft Short-circuiting device
ES2172424B1 (en) * 2000-09-01 2003-06-16 Ferrocarril Metropolita De Bar INTERVAL DRAINER ON CONTINUOUS CURRENT LINES FOR THE SUPPLY OF ELECTRICAL ENERGY TO RAILWAY VEHICLES.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104837670A (en) * 2013-01-10 2015-08-12 西门子公司 Measurement arrangement and method for detecting an ac voltage as a rail potential in dc railway systems and use of the measurement arrangement
CN104837670B (en) * 2013-01-10 2017-03-15 西门子公司 For recognizing measurement apparatus and the application of method and measurement apparatus of the alternating voltage as the rail potential in DC railway system
CN108819801A (en) * 2018-07-05 2018-11-16 苏州大学 A kind of rail potential inhibition system and method
CN108819801B (en) * 2018-07-05 2021-06-01 苏州大学 Steel rail potential suppression system and method
CN109941154A (en) * 2019-03-25 2019-06-28 中国矿业大学 A kind of system and method limiting rail voltage
CN109941154B (en) * 2019-03-25 2021-11-19 合肥华威自动化有限公司 System and method for limiting rail voltage

Also Published As

Publication number Publication date
CN102209648B (en) 2014-07-23
EP2328776A1 (en) 2011-06-08
WO2010037578A1 (en) 2010-04-08
DE102008049706A1 (en) 2010-04-01

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