EP3718853A1 - Procédé, système et véhicule permettant de localiser des pièces défectueuses de systèmes d'alimentation dans des applications ferroviaires - Google Patents

Procédé, système et véhicule permettant de localiser des pièces défectueuses de systèmes d'alimentation dans des applications ferroviaires Download PDF

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Publication number
EP3718853A1
EP3718853A1 EP20166170.9A EP20166170A EP3718853A1 EP 3718853 A1 EP3718853 A1 EP 3718853A1 EP 20166170 A EP20166170 A EP 20166170A EP 3718853 A1 EP3718853 A1 EP 3718853A1
Authority
EP
European Patent Office
Prior art keywords
parameter
values
predetermined interval
time
predefined threshold
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.)
Pending
Application number
EP20166170.9A
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German (de)
English (en)
Inventor
Ramaiah Ravindra
Veerasangappa SANGOLLI
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.)
Alstom Holdings SA
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Alstom Transport Technologies SAS
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Publication date
Application filed by Alstom Transport Technologies SAS filed Critical Alstom Transport Technologies SAS
Publication of EP3718853A1 publication Critical patent/EP3718853A1/fr
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L15/00—Indicators provided on the vehicle or train for signalling purposes
    • B61L15/0081—On-board diagnosis or maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/026—Relative localisation, e.g. using odometer

Definitions

  • the present invention relates to a method and system for localizing defective parts of a power supply system suitable for feeding vehicles, in particular railway vehicles travelling along a railway line, and to a related vehicle.
  • the method and system according to the present invention are particularly suitable for being applied to railways vehicles and will be described herein making specific reference to such applications; however, such reference should not be intended in any way as limiting the possibility of applications to other types of vehicles, and those skilled in the art would easily appreciated that they can be used in connection with any electrical vehicle adapted to be connected to a power conductor, for example cars, trucks, buses and the like, circulating on a road equipped with a main power supplying conductor, such as aerial lines or power cables placed on- or under-ground, or similar.
  • a typical example of such applications used for example in urban or underground railways, is represented by the so-called third rail which runs on the ground along a side of and spaced from a track of the associated railway line.
  • the third rail carries out the feeding power and is operatively associated with current collector equipment, e.g. the so-called shoe-gears, which are mounted on the bogies of a railway vehicle.
  • current collector equipment e.g. the so-called shoe-gears
  • a contact shoe slides on a surface of the third rail and, through the surface contact, allows the transfer of feeding power to the transiting vehicle.
  • aerial lines suspended at a certain height above the rail tracks namely the so-called catenaries, where electrical power is transferred to the travelling railway vehicles via roof-mounted pantographs, or similar current collector equipment, e.g. bow collectors, trolley poles, and the like.
  • the pantograph, or like equipment scrubs against the conductor of a catenary along which there flows the current from the power grid, thus allowing the transfer of feeding power to the transiting railway vehicle.
  • the risk of having defective parts is intrinsic and substantially unavoidable, for instance due to the working conditions under which they are used, e.g. climatic conditions which are usually variable and in some cases might be very harsh, or due to mechanical stresses exerted on the current collectors, for example by the friction with the catenaries or with third rails, or just due to the usual aging and mechanical wearing out of the various parts during lifetime service, et cetera.
  • Such defective parts either being represented by a portion of the power supply conductor, or by any part of the current collection equipment mounted on-board of railways vehicles, must be detected as timely and as precisely as possible in order to introduce corrective actions and prevent malfunctioning or failure that could result in long and unacceptable perturbations, or even disruptions, of the railway traffic.
  • One solution adopted for instance for monitoring catenaries, foresees to measure the mechanical tension of the aerial power conductor by adding at its ends mechanical means capable of detecting the actual mechanical tension.
  • a significant tension drop detected by these mechanical means would constitute an indication of a breakage along the aerial power conductor.
  • the status of the current collector equipment e.g. a pantograph, mounted on board of the powered vehicle, is not monitored at all.
  • an example is represented by the standard promulgated by the American Public Transportation Association (APTA) concerning periodic inspection and maintenance of third rail current collection equipment used on rail transit vehicles.
  • APTA American Public Transportation Association
  • an object of the present invention is to provide a solution which allows monitoring the actual condition of a power system feeding vehicles, and in particular suitable to detect, substantially in real time, the onset of any defective part, either along the main conductor feeding travelling vehicles, and/or on any current collector equipment mounted on-board of a transiting vehicle.
  • Another object of the present invention is to provide a solution capable of preventing, or at least drastically reducing, the margins of errors in detecting any defective part of the monitored power system compared with state of the art solutions.
  • a further object of the present invention to provide a solution which is more flexible in applications and can be applied with minor modifications, if any at all, to power systems using as power conductors either aerial lines and/or third rails, in connection with whatever type of current collector equipment installed on-board of vehicles to be powered.
  • Yet a further object of the present invention is to provide a solution for the detection and localization of defective parts in power systems used for supplying vehicles, which is highly reliable, relatively easy to realize and implement at competitive costs.
  • a method for localizing defective parts of a power system suitable for supplying vehicles comprising at least a main power-carrying conductor extending along at least a portion of a track, and an associated current collector equipment adapted for allowing transmission of power supply from the main power-carrying conductor to a vehicle travelling along said track, the method being characterized in that it comprises at least the following steps:
  • control system for localizing defective parts of a power system suitable for supplying vehicles, said power system comprising at least a main power-carrying conductor extending along at least a portion of a track, and an associated current collector equipment adapted for allowing transmission of power supply from the main power-carrying conductor to a vehicle travelling along said track, the control system being characterized in that it comprises at least:
  • the present invention provides also a vehicle, in particular a railway vehicle, characterized in that it comprises, or it is adapted to interact with, a control system previously indicated, and in particular according to the relevant appended claims, and as per details given hereinafter.
  • each of the above listed terms means and encompasses electronic circuits or parts thereof, as well as stored, embedded or running software codes and/or routines, algorithms, or complete programs, suitably designed for achieving the technical result and/or the functional performances for which such means are devised.
  • a method and a system for localizing defective parts of a power system suitable for supplying vehicles are schematically illustrated in figures 1 and 2 , respectively, and therein indicated by the corresponding overall reference numbers 100 and 200.
  • figure 3 there is illustrated a schematic example of a vehicle therein indicated by the reference number 2 and represented in the form of a railway vehicle.
  • railway vehicle herein used encompasses any type of railway vehicle which, when travelling along a railway line, a track of which is indicated in figure 2 by the reference number 1, is suitable to be electrically powered by a power system associated to the railway line itself.
  • a power system associated to the railway line itself encompasses any suitable type of underground or surface railway vehicles, such as subway or surface trains, tramways, which can be composed by one or more carriages or vehicles, or the like.
  • the power system indicated by the reference number 10 in figure 2 , comprises at least a main power-carrying conductor 11 extending along at least a portion of a track 1 of a railway line, and an associated current collector equipment 12 adapted for allowing transmission of power supply from the main power-carrying conductor 11 to the railway vehicle 2 travelling along the track 1 of railway line.
  • the main power-carrying conductor 11 can comprise a third rail 11', positioned on the ground and running for example on a side of the track of the railway line, and/or a catenary 11" suspended over the track at a certain height.
  • the associated current collector equipment 12 can comprise, according to solutions well known in the art and therefore not described herein in details, one or more contact shoe-gears 12', suitable to slide relative to- while being in a surface contact-friction with- the associated third rail 11', and/or one or more pantograph 12" suitable to scrub the associated catenary power conductor 11".
  • the method 100 according to the present invention comprises at least the following steps:
  • the step 150 of generating an alarm for maintenance comprises a sub-step 120 wherein, if at least the values V I,V calculated for the first parameter I, V during the first predetermined interval of time T 1 violate the first predefined threshold Th i,v while the values V I,V calculated for the first parameter I, V during the second predetermined interval of time T 2 respect the predefined first threshold Th i,v , then generating a first alarm signal indicative of a defective part of the main power-carrying conductor 11 at a location related to the position P(T 1 ) tracked for the railway vehicle 2 along the railway line at the first interval of time T 1 .
  • steps 105 to 115 are repeated.
  • the first alarm signal indicative of a defective part of the main power-carrying conductor 11 at a location related to the position P(T 1 ) tracked for the railway vehicle 2 along the railway line 1 at the first interval of time T 1 , is generated.
  • the step 150 of generating an alarm for maintenance comprises advantageously also the following sub-steps:
  • the vehicle 2 has just one current collector, for example a pantograph 12"
  • the indicated first part and second part would correspond, relative to the direction of travelling of the vehicle 2, for instance to a front part and a rear part of the pantograph 12".
  • the vehicle 2 is provided with two current collectors (or even more), such as the illustrated shoe-gears 12', then the first and second current collectors would be the first and second shoe-gears 12' positioned on the vehicle 2 with reference to the travelling direction.
  • the third alarm will refer to the first or second part or current collector corresponding at the interval of time T 1 , or T 2 for which the calculated values V F of the second parameter F exceed/violate the second predefined threshold T f .
  • the indicated thresholds Th I,V and Th F can be represented by corresponding standard values of the relevant power system 10, e.g. values specified in operational/maintenance manuals for the power system, or they can be selected by users case by case.
  • the above indicated values are calculated during series of successive interval of times T, for example each lasting 5 sec. When such values exceed the relevant threshold in an interval of time, such interval represents the first interval of time T 1 and the following one represents the second interval of time T 2 .
  • first, second, and third alarm signals are expressed in such a way just for the sake of clarity of description and should not be interpreted as related to a specific sequence, since they clearly relate each to a specific operational situation the occurrence of which would exclude the others.
  • the above indicated step 110 comprises calculating values V I related the current I flowing along the main power-carrying conductor 11 and/or values V V related to its operating voltage V.
  • the direct voltage can be calculated, while for AC power systems, it is possible to calculate the peak voltage.
  • the above indicated step 110 comprises calculating values V F related to friction exerted between the main power-carrying conductor 11 and one or more parts of the associated current collector equipment 12 mounted on-board of the railway vehicle 2 which travels along the railway line 1 and is supplied by the power carried by the conductor 11.
  • the method 100 further comprises a step 140 of verifying if the main power-carrying conductor 11 materially extends along the railway line 1 at one or more locations corresponding to actual positions P a tracked for the railway vehicle 2 along the railway line 1.
  • a database or equivalent storage unit (not illustrated) storing information about the layout of tracks of the railway line 1 and related power system 10 can be used.
  • step 140 of verifying is advantageously carried out before generating any alarm signal and, thanks to this verification, the generation of undue alarm signals is prevented for all applications where, for whatever reason, the main power-carrying conductor 11 is not present along a section of the associated railway line 1.
  • step 140 of verifying has been illustrated as a dotted box in the middle of and as being executed after the step 115 and/or 125.
  • the step 140 can be carried out continuously, or it can be executed only when there is found that for a certain interval of time, the values calculated for the monitored parameters exceed the relevant threshold; it can be carried in parallel with or in whatever suitable order with respect to the steps preceding the generation of an alarm signal.
  • the step 105 of tracking comprises recording the actual position P a of the railway vehicle 2 at regular interval of times based on position identifiers 43, e.g. one or more balises, distributed over the railway line 1 at regular intervals, and on the actual speed of the railway vehicle 1.
  • position identifiers 43 e.g. one or more balises
  • the specific location of a railway vehicle 2 travelling along the railway line 1 can be calculated via the following formula: ABS ODO_VALUE_AT_X + DELTA ⁇ ODO_VALUE_AT_X meters
  • X is a point corresponding to a balise location
  • [ODO_VALUE_AT_X] is the odometer value of the railway vehicle 1 at point X at first time interval T1
  • [ODO_VALUE_AT_X + DELTA] is the odometer value of the railway vehicle 1 at a second time interval T2.
  • control system 200 illustrated in figure 2 comprises at least:
  • the elaboration device 50 is further configured to generate a first alarm signal indicative of a defective part of the main power-carrying conductor 11 at least at a location corresponding to the position tracked for the railway vehicle 2 along the railway line 1 at the first interval of time T 1 , if at least the values V I,V calculated for the first parameter I, V during the first predetermined interval of time T 1 violate the first predefined threshold Thiv while the values V I,V calculated for the first parameter I, V during the second predetermined interval of time T 2 respect the predefined first threshold.
  • the elaboration device 50 is further configured to generate the first alarm signal indicative of a defective part of the main power-carrying conductor (11) at a location corresponding to the position (P(T 1 )) tracked for the vehicle (2) along the track (1) at said first interval of time (T 1 ), if the values (V I,V ,V F ) calculated for the first parameter (I, V) and respectively for the second parameter (F) during the first predetermined interval of time (T 1 ,) violate the corresponding first predefined threshold (Th i,v ) and second predefined threshold (Th F ), while the values (V I,V ,V F ) calculated for the first parameter (I, V) and respectively for the second parameter (F) during the second predetermined interval of time (T 2 ) respect the corresponding first predefined threshold (Th i,v ) and second predefined threshold (Th F ).
  • the elaboration device 50 of the system 200 is further configured to execute the process described on figure 1 and its steps described here-above.
  • An alarm signal generated can be output for example to a display unit 60, e.g. positioned on-board of the railway vehicle 2, and/or to a remote-control room.
  • the elaboration device 50 can be constituted by any suitable processor-based device 50, e.g. a processor of a type commercially available and suitably programmed in order to perform the functionalities it is devised for.
  • the one or more sensors 30 comprise at least a current sensor, and/or a voltage sensor 30, or it is possible to use a combined current-voltage sensor.
  • the one or more sensors 30 can comprise also a friction sensor adapted for detecting the dynamic coefficient of friction at least between the main power-carrying conductor 11 and one or more parts of associated current collector equipment 12 mounted on-board of the railway vehicle 2.
  • such friction sensor may be constituted by any MEMS sensor commercially available and suitable for the scope of the present invention.
  • the position tracker 40 comprises for example a memory 41, or any equivalent storage unit, for storing data indicative of the location of position identifiers 43, e.g. balises, distributed along the railway line 1, and an associated detector 42 which, when the railway vehicle 2 is travelling along the line 1, detects the presence of a balise and outputs a corresponding signal to the elaboration device 50.
  • a memory 41 or any equivalent storage unit, for storing data indicative of the location of position identifiers 43, e.g. balises, distributed along the railway line 1, and an associated detector 42 which, when the railway vehicle 2 is travelling along the line 1, detects the presence of a balise and outputs a corresponding signal to the elaboration device 50.
  • the method 100, the control system 200, and the related railway vehicle 2 according to the present invention achieve the intended aim and objects, since they allow detecting the presence of a defective part of a system powering railway vehicles timely and precisely.
  • the present invention it is possible to discriminate whether a defective part is present on a main power-carrying conductor or any current collector associated therewith and mounted on board of a railway vehicle supplied by the power conductor.
  • control system 200 may reside on the same electronic unit, or they can even be realized as subparts of a same component or circuit of an electronic unit, or they can be placed remotely from each other and in operative communication there between.
  • the sensors 30 are placed on board of a vehicle
  • the display unit can reside in a remote-control room.
  • the position tracker can be replaced or integrated with GPS systems where available.
  • the indicated track 2 of the railway line 1, can be represented by a road, and the pantograph 12" or shoe-gears 12' can be represented by any suitable type of current collector mounted on board of a vehicle 2.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP20166170.9A 2019-03-28 2020-03-27 Procédé, système et véhicule permettant de localiser des pièces défectueuses de systèmes d'alimentation dans des applications ferroviaires Pending EP3718853A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN201941012287 2019-03-28

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EP3718853A1 true EP3718853A1 (fr) 2020-10-07

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EP20166170.9A Pending EP3718853A1 (fr) 2019-03-28 2020-03-27 Procédé, système et véhicule permettant de localiser des pièces défectueuses de systèmes d'alimentation dans des applications ferroviaires

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EP (1) EP3718853A1 (fr)
CA (1) CA3077008A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023168935A1 (fr) * 2022-03-08 2023-09-14 中车大连机车车辆有限公司 Circuit de commande d'alarme approprié pour la sécurité de guidage de défaillance d'un véhicule de métro ferroviaire urbain

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005044614A1 (fr) * 2003-10-31 2005-05-19 Morganite Electrical Carbon Limited Systeme de surveillance pour des vehicules electriques prelevant du courant de conducteurs
DE102014226694A1 (de) * 2014-12-19 2015-12-31 Siemens Aktiengesellschaft Erfassung der Kontaktfehler zwischen Oberleitung undSchleifleisten
EP3165398A1 (fr) * 2015-11-09 2017-05-10 ALSTOM Transport Technologies Procédé et système pour surveiller un pantographe d'un véhicule ferroviaire et véhicule ferroviaire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005044614A1 (fr) * 2003-10-31 2005-05-19 Morganite Electrical Carbon Limited Systeme de surveillance pour des vehicules electriques prelevant du courant de conducteurs
DE102014226694A1 (de) * 2014-12-19 2015-12-31 Siemens Aktiengesellschaft Erfassung der Kontaktfehler zwischen Oberleitung undSchleifleisten
EP3165398A1 (fr) * 2015-11-09 2017-05-10 ALSTOM Transport Technologies Procédé et système pour surveiller un pantographe d'un véhicule ferroviaire et véhicule ferroviaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023168935A1 (fr) * 2022-03-08 2023-09-14 中车大连机车车辆有限公司 Circuit de commande d'alarme approprié pour la sécurité de guidage de défaillance d'un véhicule de métro ferroviaire urbain

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CA3077008A1 (fr) 2020-09-28

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