EP1470626A1 - Dispositif pour court-circuiter deux lignes electriques pour reduire une difference de potentiel - Google Patents

Dispositif pour court-circuiter deux lignes electriques pour reduire une difference de potentiel

Info

Publication number
EP1470626A1
EP1470626A1 EP03704229A EP03704229A EP1470626A1 EP 1470626 A1 EP1470626 A1 EP 1470626A1 EP 03704229 A EP03704229 A EP 03704229A EP 03704229 A EP03704229 A EP 03704229A EP 1470626 A1 EP1470626 A1 EP 1470626A1
Authority
EP
European Patent Office
Prior art keywords
electronic switching
line
electrical
switch
potential
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Withdrawn
Application number
EP03704229A
Other languages
German (de)
English (en)
Inventor
Martin HÜNNER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Publication of EP1470626A1 publication Critical patent/EP1470626A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Definitions

  • the invention relates to a device for short-circuiting a first electrical line with a second electrical line for reducing a potential difference, at least one first electronic switching device being arranged between the first and the second line and at least one second electronic switching device being arranged antiparallel to this, with at least one of the two electronic switching devices, an occurring potential difference between the first and the second electrical line can be bridged, the first electronic
  • Switching device switches when the potential of the second electrical line is greater than the potential of the first electrical line by a predeterminable differential value, and the second electronic switching device switches when the potential of the first electrical line is greater than the potential of the second electrical line ,
  • Such a device is known from WO 01/06610 AI.
  • An essential part of the known device is a mechanical switch which is connected to a voltage detection device. Both are arranged between the two electrical lines. If the potential difference between the first and the second electrical line, which is recognized by the voltage detection device, is too great, the switch is closed and a short circuit between the two lines is effected.
  • Electronic switch units are only available in addition to the mechanical switch, but are only intended to supplement the mechanical switch.
  • the mechanical switch containing moving parts essentially causes the removal of an undesired th potential difference between the first and the second line.
  • the first electrical line is the travel rail, which serves as a return line
  • the second electrical line is the structural earth (grounding line).
  • the invention has for its object to provide a device for short-circuiting two electrical lines to reduce a potential difference, which largely does without moving parts.
  • the object is achieved according to the invention in that there is no mechanical switch for direct short-circuiting.
  • each electronic switching device has a component that changes from a high-resistance to a low-resistance state when a fixed voltage is exceeded.
  • the tolerable difference value of the potentials is to be determined by this component.
  • This component can be a breakover diode, a zener diode or a comparable component.
  • each electronic switching device can have an electrical switch which can be switched by a voltage monitoring device arranged between the first and the second line and which closes immediately or with a time delay when a threshold value is exceeded.
  • This electrical switch can, for example, be arranged parallel to the component of the respective electronic switching device, which e.g. can be a breakover diode. This creates a staggering.
  • the electronic switching device is automatically opened again.
  • a current detection device can be arranged, for example, between the electronic switching devices on the one hand and one of the two lines, which is connected via a control line to a switch in a connecting line between the two lines.
  • the switch is used to reset or delete semiconductor switching elements of the electronic switching device when the switch is closed.
  • the switch in the connecting line is closed briefly.
  • This switch is not used to short-circuit the two electrical lines, but only to reset (delete) the semiconductor switching elements so that they can always work reliably.
  • the electronic switching devices can, for example, also switch with a time delay in order to suppress only excessively large potential differences.
  • the electronic switching devices can contain thyristors which have response times of 1 to 2 microseconds, for example.
  • the thyristor circuit comprises at least one thyristor, the cathode of which is connected to the first electrical line and the anode of which is connected to the second electrical line.
  • a drive circuit is connected to the gate of the thyristor, which is connected in series from e.g. Toggle diode, ignition resistor and protective diode.
  • the thyristor circuit comprises at least one thyristor, the cathode of which is connected to the second electrical line and the anode of which is connected to the first electrical line.
  • a drive circuit is connected to the gate of the thyristor, which has a series circuit of e.g. Toggle diode, ignition resistor and protective diode.
  • the breakover diode has an ignition voltage of 200 to 800 volts, for example.
  • the device according to the invention has the particular advantage that two electrical lines can be reliably short-circuited for reducing a potential difference with simple means and without complex mechanical switches.
  • FIG. 1 shows a device for short-circuiting with breakover diodes.
  • FIG. 2 shows a device for short-circuiting with a voltage monitoring device and electrical switches.
  • FIGS. 1 and 2 shows a combination of the embodiments of FIGS. 1 and 2.
  • FIG. 4 shows the embodiment according to FIG. 3, which is additionally equipped with a switch for resetting or deleting semiconductor switching elements.
  • first line 1 which can be a running rail and a second line 2, which can be an earthing line.
  • second line 2 which can be an earthing line.
  • Two electronic switching devices 3 and 4 are used for this purpose, the first 3 switching when the potential of the second line 2 is greater than the potential of the first line 1, and the second electronic switching device 4 switching when the potential of the first line 1 is greater than is the potential of the second line 2.
  • Each of the two electronic switching devices 3 and 4 consist of a thyristor 5, 6 and a series circuit arranged in parallel therewith, firstly a protective diode 7, 8 which is transparent in the same direction as the thyristor 5, 6 and secondly a current limiting resistor 9, 10.
  • each of the series connections additionally has a breakover diode 11, 12. These are constructed in such a way that they open at their input when a certain potential is reached and thus make it possible for the assigned thyristor 5, 6 to be switched to be permeable.
  • the existing semiconductor switching elements are reset or erased when the potential difference between the two lines 1 and 2 Is zero.
  • This simplest variant of a device for short-circuiting two electrical lines 1 and 2 for reducing a potential difference does not require any elaborate electronics and in particular without any elaborate mechanical switches.
  • FIG. 2 shows a variant in which the breakover diodes are replaced by electrical switches 13, 14. All other components correspond to those of the electronic switching devices 3 and 4, which are shown in FIG. 1. These electrical switches 13, 14 close when a certain one is reached
  • a voltage monitoring device 15 is arranged between the first line 1 and the second line 2 and is connected to the electrical switches 13 and 14 via control lines.
  • the advantage over the exemplary embodiment according to FIG. 1 can be seen in the fact that the threshold value for the potential difference at which an electrical switching device 3 or 4 triggers is variable.
  • the threshold value can be selected by suitably setting the voltage monitoring device 15. You can therefore choose different threshold values for short-circuiting as required.
  • the embodiment according to FIG. 3 shows a combination of the previously described two embodiments.
  • the electrical switches 13, 14 known from FIG. 2 are arranged parallel to the breakover diodes 11, 12 known from FIG.
  • the other components correspond to the described embodiments.
  • the combination of a breakover diode 11, 12 and an electrical switch 13, 14 in conjunction with a voltage monitoring device 15 has the advantage that the electronic switching devices 3, 4 always respond to the potential differences defined by the breakover diodes 11, 12 and additionally also even with a smaller potential difference, provided that Water causes the closing of the electrical switches 13, 14 via the voltage monitoring device 15.
  • a current detection device 16 is arranged between the two electronic switching devices 3, 4 on the one hand and the first line 1 on the other hand. This is arranged via a control line with a switch 17 in a connecting line 18 between the two lines 1 and 2.
  • This has the advantage that the semiconductor switching elements of the electronic switching devices 3, 4 are reset or deleted not only when the potential difference between the lines 1 and 2 is zero. This deletion can also be triggered when a small current still flows through the electronic switching devices 3, 4.
  • the current detection device 16 detects whether the current has fallen below a threshold value, which then closes the switch 17 operating as an extinguishing relay via a control line.
  • All of the embodiments according to the invention manage without complex mechanical switches for short-circuiting, which must be arranged directly between the two lines 1 and 2. In addition, advantageously no complex electronics are required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electronic Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Power Conversion In General (AREA)

Abstract

L'invention concerne un dispositif pour court-circuiter une première ligne électrique (1) avec une deuxième ligne électrique (2), afin de réduire une différence de potentiel. Entre les première (1) et deuxième (2) lignes électriques sont disposés au moins un premier dispositif de commutation (3) électronique et au moins un deuxième (4) dispositif de commutation électronique antiparallèle au premier. L'invention est caractérisée en ce qu'aucun commutateur mécanique n'est utilisé pour ce court-circuitage direct.
EP03704229A 2002-01-30 2003-01-17 Dispositif pour court-circuiter deux lignes electriques pour reduire une difference de potentiel Withdrawn EP1470626A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10203602 2002-01-30
DE10203602 2002-01-30
PCT/DE2003/000131 WO2003065534A1 (fr) 2002-01-30 2003-01-17 Dispositif pour court-circuiter deux lignes electriques pour reduire une difference de potentiel

Publications (1)

Publication Number Publication Date
EP1470626A1 true EP1470626A1 (fr) 2004-10-27

Family

ID=27634740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03704229A Withdrawn EP1470626A1 (fr) 2002-01-30 2003-01-17 Dispositif pour court-circuiter deux lignes electriques pour reduire une difference de potentiel

Country Status (3)

Country Link
US (1) US7199990B2 (fr)
EP (1) EP1470626A1 (fr)
WO (1) WO2003065534A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007029850A1 (de) * 2007-06-28 2009-01-02 Siemens Ag Schienenfahrzeug mit einem Wagenkasten sowie Verfahren zum Schutzerden eines solchen Wagenkastens
CN102761117A (zh) * 2012-07-27 2012-10-31 上海电器成套厂有限公司 一种钢轨电位保护装置及其工作方法
FR3004019A1 (fr) * 2013-03-29 2014-10-03 St Microelectronics Tours Sas Composant de protection contre des surtensions
US9178349B2 (en) 2013-09-11 2015-11-03 General Electric Company Method and system for architecture, control, and protection systems of modular stacked direct current subsea power system
US9640982B2 (en) * 2014-11-05 2017-05-02 General Electric Company Over-voltage protection system and method
CN116488126B (zh) * 2023-06-21 2023-09-05 华海通信技术有限公司 一种泄压装置、海缆***及海缆电压泄放方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3640661A1 (de) 1986-11-28 1988-06-09 Siemens Ag Schaltungsanordnung zum ueberspannungsschutz eines thyristors in blockierrichtung
US5436786A (en) * 1992-12-21 1995-07-25 Dairyland Electrical Industries, Inc. Isolator surge protector for DC isolation and AC grounding of cathodically protected systems
US5856904A (en) * 1996-11-15 1999-01-05 Dairyland Electrical Industries, Inc. Voltage and current based control and triggering for isolator surge protector
PL206826B1 (pl) 1999-06-23 2010-09-30 Sanofi Aventis Deutschland Podstawione benzimidazole
WO2001006610A1 (fr) * 1999-07-16 2001-01-25 Siemens Aktiengesellschaft Dispositif de mise en court-circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03065534A1 *

Also Published As

Publication number Publication date
US20050219783A1 (en) 2005-10-06
US7199990B2 (en) 2007-04-03
WO2003065534A1 (fr) 2003-08-07

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