EP4143056A1 - Verfahren zur zustandsüberwachung einer entlang einer fahrbahn angeordneten oberleitungsanlage - Google Patents
Verfahren zur zustandsüberwachung einer entlang einer fahrbahn angeordneten oberleitungsanlageInfo
- Publication number
- EP4143056A1 EP4143056A1 EP21731700.7A EP21731700A EP4143056A1 EP 4143056 A1 EP4143056 A1 EP 4143056A1 EP 21731700 A EP21731700 A EP 21731700A EP 4143056 A1 EP4143056 A1 EP 4143056A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- overhead line
- line system
- image data
- determined
- overhead
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/28—Manufacturing or repairing trolley lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/041—Obstacle detection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
- B61L27/53—Trackside diagnosis or maintenance, e.g. software upgrades for trackside elements or systems, e.g. trackside supervision of trackside control system conditions
Definitions
- Overhead contact line systems have long been used to supply electrical energy to electrically powered rail vehicles in rail traffic, but recently they have also been tested for electrically or hybrid-electrically powered road vehicles for heavy haulage.
- electrical energy is fed into the road vehicle while the road vehicle is in motion by means of a vehicle-mounted pantograph that contacts a two-pole overhead contact line of the overhead line system.
- the overhead line has two contact wires, one of which is designed as a plus pole and the other as a minus pole.
- the contact wires are each suspended from a suspension cable of the overhead contact line system via hangers and form two catenaries arranged in parallel over, for example, the right-hand lane of a carriageway.
- the chain works are attached to transverse support devices, which in turn are attached to masts standing on the side of the roadway, and are braced by tensioning devices.
- the overhead line system can be electrically divided into feed sections, each of which is supplied with electrical energy by one or more substations.
- an overhead contact line system is subject to constant mechanical operating loads from dragging pantographs on the vehicles and from the guy forces.
- it is subject to wear from pantographs that are not optimally guided or worn, arcs and discharges or mechanical wear.
- changing dynamic loads occur in the catenary system.
- the changing thermal loads caused by the operating currents in the overhead line and the ambient conditions have a considerable influence on the long-term operational stability and thus the service life. If the overhead line system is not available due to damage, wear and tear or other malfunctions, the infrastructure-side energy supply of the road vehicles is omitted, which forces them to obtain energy via a vehicle-side diesel generator or from an energy storage device or to interrupt the journey.
- a system and a method for monitoring a contact wire are known from the laid-open specification DE 102007 015 576 A1, a monitoring line being stretched along a contact wire used for the electrical supply of a rail vehicle.
- the monitoring line is mechanically coupled to the contact wire in such a way that if the contact wire breaks, the monitoring line breaks together with the contact wire.
- An evaluation device is designed to detect the break in the monitoring line.
- This monitoring system requires a considerable effort due to the laying of the monitoring line over the entire monitoring area. Although it can reliably detect a break in a contact wire, it will be destroyed in the event of damage and must then be replaced. In addition, the monitoring system cannot detect damaging events other than breaks.
- an acoustic device known from the Offenlegungsschrift DE 102006 031 919 Al for examining a contact wire of an overhead line intended for the electrical DC voltage supply of a rail locomotive works non-destructively.
- the device is equipped with at least one transmitting / receiving unit for ultrasonic radiation that has at least one ultrasonic transducer.
- the Ultrasonic transducer sends at least one ultrasonic pulse into the contact wire and receives a portion of the ultrasonic pulse reflected from the contact wire.
- a lubricant is provided with which the driving wire is provided to reduce wear when driving through a pantograph.
- This investigation facility detects material damage such as cracks, flaws and other anomalies in the contact wire.
- the inspection device By arranging the inspection device on a maintenance vehicle that applies the lubricant, the entire contact wire cannot be monitored in real time, since only the contact wire point just scanned by the ultrasonic transducer is checked. The examination device cannot be used to detect a contact wire break.
- Another disadvantage is the need to operate a large number of maintenance vehicles equipped with the investigation facility.
- the international publication WO 2008/095739 A1 discloses a device for detecting a mechanical defect in a wire of an overhead line.
- a device for determining the tensile force of the wire is provided, which is connected to the wire and a support point.
- the one direction can be designed as a load cell between the wire and a tensioning wheel, as a rotary angle meter of a rocker bearing the tensioning wheel, or as a position meter for a weight body hanging on the tensioning wheel.
- a change in the tensile force of the contact wire can be caused by its temperature-related longitudinal migration, by its upward movement when driven on, by additional loads in the catenary system or by a ladder crack.
- the device is connected to an evaluation device, which compares the tensile force with a target value and indicates a mechanical defect if the value falls below the target value, in particular before the contact wire is torn.
- an evaluation device which compares the tensile force with a target value and indicates a mechanical defect if the value falls below the target value, in particular before the contact wire is torn.
- progressive damage such as can arise from undulating unevenness in the contact wires, cannot be detected by this device either.
- a monitoring device for a catenary of an overhead line system which has a contact wire held by a suspension cable for feeding energy into an electric traction vehicle.
- the monitoring device comprises at least one sensor unit for detecting a signal triggered by a damaging event in the catenary, in particular in the contact wire.
- the at least one sensor unit is connected in a stationary manner to the overhead line system in a monitoring area.
- the monitoring device also includes an evaluation unit for analyzing the signal.
- We at least one sensor unit is designed as an electroacoustic transducer which is acoustically coupled to the contact wire in order to convert an acoustic signal caused by a damaging event into an electrical signal.
- the invention is therefore based on the object of providing a method with which the state of an overhead contact line system arranged along a roadway can be monitored in real time with regard to a large number of possible damaging events.
- the method is designed and provided to monitor the state of an overhead line system arranged along a roadway.
- the overhead line system has an overhead line running above the roadway for supplying energy to an electrically or hybrid-electrically powered road vehicle using the roadway, which can be contacted for energy supply by a pantograph of the roadway vehicle.
- video image data which at least partially represent the overhead line system, are recorded.
- An actual state of the overhead contact line system is determined from the captured video image data.
- the distribution, arrangement and alignment of the video cameras can be set up to monitor the overhead contact line system comprehensively or only partially, directed towards certain route components.
- Focal lengths and opening angles of the camera fields of view are adapted to the respective sections of the overhead line system to be monitored. For example, the current state of rest, vibration behavior, presence, damage to the catenary systems or other line components of the overhead line system can be recorded.
- the invention thus enables the condition of the overhead line to be monitored in real time. Possible faults in the overhead line system can also be localized much better and the potential danger to other road users can be checked more quickly.
- thermal image data which at least partially represent the overhead line system, are recorded by means of at least one thermal imaging camera of the image recording system installed in the area of the roadway.
- An actual state of the overhead line system is determined from the recorded thermal image data.
- IR cameras can generate a thermal image that provides information about the temperature distribution on the recorded thermal image. This enables the image recording system to carry out an extended evaluation in order to draw conclusions about the condition of the overhead line system or the traffic situation via the temperatures of the overhead line, current collectors or road vehicles on the roadway.
- the captured video image data and / or thermal image data are transmitted to an image reproduction system in a monitoring center.
- the transmitted video image data and / or thermal image data for determining the actual state of the overhead line system are displayed on a screen of the image display system.
- the monitoring by an operator in a monitoring center can be carried out by in- inspection of the displayed video image data can be made.
- the monitoring center can, for example, be a car control center in which the video image data are also evaluated with regard to the traffic situations. The operator recognizes possible damage or malfunctions of the overhead contact line system on the screen and can initiate measures to eliminate them.
- the captured video image data and / or thermal image data are transmitted to an image evaluation system for automated image analysis.
- the transmitted video image data and / or thermal image data are analyzed by means of trained image evaluation algorithms to determine the actual status of the overhead line system.
- the automated image analysis can support the operator in the monitoring center by recognizing certain actual states as possible damage or malfunction of components of the overhead line system and displaying them to the operator for evaluation. If the error rate is sufficiently low, the automated image analysis can completely replace the operator.
- a deviation of the determined actual state of the overhead line system from the target states of the overhead line system stored in a database of the image evaluation system is calculated by means of the image evaluation algorithms.
- image evaluation algorithms are trained in that a database of target states of the overhead line system is recorded. There are target states for each of the video and / or thermal imaging cameras, the projected nominal state of the overhead line system and operationally tolerable position, movement and temperature deviations.
- the database also includes a large number of actual states of the overhead line system, which characterize a defect or a fault in the overhead line system, with this database can be continuously supplemented with new fault patterns during operation of the catenary system.
- target states of the overhead line system for different operating parameters and / or for different environmental parameters are stored in the database.
- the target states of the overhead line system used to determine the deviation are selected as a function of the measured operating and / or environmental parameters.
- Different target states of the overhead line system can exist with operationally different currents, voltages or powers in the overhead line or in the substation of the overhead line system.
- different target states of the overhead line system can exist with different ambient air temperatures, wind speeds, precipitation or the like that act on the overhead line system.
- a position of rest and / or a vibration behavior of route components of the overhead line system are determined as the actual state.
- a continuous geometrical detection of the rest position of catenaries and / or transverse support devices and / or hanging columns and / or Spannvor devices and / or line separators and / or masts of the overhead line system is compared with the rest position according to the target state to detect a misalignment, a defect or to find a complete absence. For example, a crack in a contact wire or support cable can be detected.
- the contact wire can also be monitored by video and thermal image information with a continuous current flow.
- the position of the contact wire its target state is known under all operating parameters due to the configuration data for the system design. If the situation changes outside of a permissible area, for example due to a contact wire crack or excessive ice, an alarm can be triggered. Alternatively, the hanging columns can also be monitored. If they vibrate too quickly or if they leave the specified work area in accordance with the target state, an error could be expected.
- people and / or objects in the monitoring area of the overhead line system are determined as the actual state.
- line components of the overhead line system can be monitored against vandalism.
- An alarm can be triggered if a person recognizable on video and / or thermal image approaches the section boxes on the catenary masts.
- Disturbing objects in the area of the overhead line such as trees that have grown in or fallen, parts of plants, tarpaulins, ice curtains and the like, can also be detected.
- an alarm can automatically be triggered to verify the status and, if necessary, measures to remove the objects can be initiated.
- a number of pantograph passages and / or a lift height of the contact wire in a pantograph pass are determined as the actual state. This allows conclusions to be drawn about the wear and tear on the contact wires.
- the contact wire changes its static position of rest while it is being used with otherwise the same environmental parameters. The combination of these data allows a much more complex monitoring of the overhead contact line system, which enables a comprehensive evaluation, in particular with regard to wear behavior, maintenance and repair.
- the actual state is an occurrence of an arc on the overhead contact line system.
- Recurring short-term faults such as arcing can be compared with the operating data from the overhead line system, such as current, voltage, power and other sensor data. A more detailed evaluation of the severity of the malfunction and the possible effects on the system can be made from this data. From a defined frequency, an alarm can be generated and / or the system can be switched off.
- a change in its heat distribution and / or its rest position caused by a specifically triggered current flow in the overhead line is determined as the actual state.
- the actual change in the contact wire heat distribution and / or the contact wire position can be checked and compared with a target change, for example an initial measurement after construction plus wear and tear. If the actual change in the contact wire exceeds the specified limit values, the catenary system must be checked and, if necessary, readjusted or repaired.
- a heat distribution in the overhead line is determined as the actual state. Based on the electrical consumption values in the substation, the expected heat build-up in the contact wire is calculated. If the thermal image data reveals a discernible deviation from the target state during monitoring, an alarm can be triggered for a possible malfunction.
- An increased temperature can, for example, indicate an impairment of the electrical conductivity due to excessive abrasion of the contact wire. If the temperature is too low, this can indicate a defect in the power supply or an ice layer on the contact wire.
- the determined actual State and / or based on the determined deviation of the actual state from one of the target states automatically triggered a status report about detected wear or a detected fault.
- the automated output of the status report can contain the specific findings and possible remedial measures.
- video image data which at least partially represent the roadway and road vehicles using it, are recorded by means of the at least one video camera.
- a current traffic condition on the lane is determined from the captured video image data.
- FIG. 1 shows a monitoring system for performing the method according to the invention
- FIG. 2 shows a flow chart of the method according to the invention is illustrated schematically.
- a monitoring system is provided for carrying out the method according to the invention for monitoring the status of an overhead contact line system 4 arranged along a roadway 1.
- the overhead line system 4 is used to supply energy to an electrically or hybrid-electrically driven road vehicle 2 using the lane 1, for example se of a truck or bus.
- the overhead contact line system 4 has a two-pole overhead line running above the carriageway 1, which comprises two contact wires 5 arranged parallel to one another, at the same height above the carriageway 1 and symmetrically to the center of a lane.
- Each contact wire 5 hangs over hangers 7 on a support cable 6 in the manner of a chain mechanism 8.
- the contact wires 5 could also be attached without support ropes and hangers.
- the two catenaries 8 are fastened to masts 10 via Quertragein directions 9, which are at the side of the lane 1.
- the electrical energy is provided via a substation 11, in which measuring devices are provided for recording current operating data, in particular current, voltage and power to the overhead line.
- the contact wires 5 of the catenaries 8, which are designed as positive and negative poles are contacted by a pantograph 3 of the road vehicle 2.
- an environmental sensor system 12 for capturing environmental data, in particular air temperature and wind speed, is attached to the mast 10. The environmental data can also be obtained from other information sources.
- the monitoring system comprises an image recording system 13 with video cameras 14 installed in the area of the roadway 1 for capturing video image data. It can additionally include thermal imaging cameras 15 for capturing thermal image data, which are installed, for example, with the video cameras 14 on a camera mast, an overhead line mast, a transverse support device, a sign gantry or some other bridge structure.
- the video and thermal image data represent a certain section of the overhead line system 4, which is determined by the location, orientation, field of view and distance of the respective camera 14 and 15.
- the monitoring system comprises an image reproduction system 17, which is used to display the captured video and thermal image data on a screen 18 is provided. It also includes an image evaluation system
- the data processing means 20 are connected to a database 21 of the image evaluation system 19 in which the target states of the overhead line system 4 are stored.
- target states of the overhead line system 4 for different operating parameters and for different environmental parameters can be stored in the database 21.
- a position of rest and / or a vibration behavior of line components of the overhead line system 4 in particular of chain works 8 and / or cross support devices 9 and / or hanging pillars and / or tensioning devices and / or section separators and / or masts 10 of the overhead line system can be parameter-dependent target states 4 must be saved.
- a monitoring area of the overhead line system 4 it can be stored as a target state that people and / or disturbing objects are not present therein.
- a certain elevation height of the contact wire 5 in the case of a pantograph passage can also be stored as the desired state.
- the absence of arcs on the overhead line system 4 can also be stored as a target state.
- a change in its rest position caused by a specifically triggered current flow in the overhead line 5 can be stored as the target state.
- a specific heat distribution in the overhead line 5 can be stored in the database 21 as the target state.
- video image data are recorded in a step V by means of the video cameras 14 and thermal image data of sections of the overhead line system 4 are recorded in a step W by means of the thermal image cameras.
- the captured video and thermal image data can be transmitted to the image display system 17, where they are displayed on the screen 18 in a step M in order to determine the actual state of the overhead contact line system 4.
- the current status can be determined by observing the image display Gen detectable by an operator who knows the target state of the overhead line system 4 from expertise and experience.
- the captured video and thermal image data can be transmitted additionally or exclusively to the image evaluation system 19 for automated image analysis, where they are analyzed in a step A using trained image evaluation algorithms to determine the actual state of the overhead line system 4.
- a deviation of the determined actual state of the overhead line system 4 from the desired states of the overhead line system 4 stored in the database 21 is calculated.
- current operating parameters such as electrical variables in the substation 11
- U current environmental parameters such as weather data
- the actual state can be a rest position and / or a vibration behavior of line components of the overhead line 4, in particular of catenaries 8 and / or transverse support devices 9 and / or hanging columns and / or tensioning devices and / or line separators and / or masts 10 and the like, are determined to determine whether and, if necessary, how much this deviates from the target state.
- a presence of people in an access area of the overhead line system 4 that is to be monitored can be determined as the actual state in order to be able to counteract vandalism or dangerous situations.
- a number of pantograph passages and / or a lift height of the contact wire 5 in the case of a pantograph pass can also be determined as the actual state, which draws conclusions about the state of wear of the contact wire 5 allows.
- the occurrence of an arc on the overhead line system 4 can be determined as the actual state, from which the location of a possible fault point can be derived.
- a change in its rest position brought about by a targeted current flow in the overhead line 5 can then also be determined as the actual state in order to infer the closure state from the behavior observed.
- a heat distribution in the overhead line 5 can be determined as the actual state in order to draw conclusions about faults from possible overheating points.
- video cameras 14 can also record video image data which represent at least some of the roadway 1 and road vehicles 2 using it. From the captured video image data, a current traffic condition on lane 1, such as a traffic jam or a burning vehicle, can be averaged in step A and output as a status report about the traffic situation in step Z.
- a current traffic condition on lane 1 such as a traffic jam or a burning vehicle
- step A can be averaged in step A and output as a status report about the traffic situation in step Z.
- an already installed automatic fault detection system for highways or motorways can advantageously be used for the monitoring method according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020207963.3A DE102020207963A1 (de) | 2020-06-26 | 2020-06-26 | Verfahren zur Zustandsüberwachung einer entlang einer Fahrbahn angeordneten Oberleitungsanlage |
| PCT/EP2021/064228 WO2021259587A1 (de) | 2020-06-26 | 2021-05-27 | Verfahren zur zustandsüberwachung einer entlang einer fahrbahn angeordneten oberleitungsanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4143056A1 true EP4143056A1 (de) | 2023-03-08 |
Family
ID=76392334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21731700.7A Withdrawn EP4143056A1 (de) | 2020-06-26 | 2021-05-27 | Verfahren zur zustandsüberwachung einer entlang einer fahrbahn angeordneten oberleitungsanlage |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4143056A1 (de) |
| DE (1) | DE102020207963A1 (de) |
| WO (1) | WO2021259587A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022204216A1 (de) | 2022-04-29 | 2023-11-02 | Siemens Mobility GmbH | Verfahren zur Zustandserfassung einer straßenseitigen Oberleitungsanlage |
| CN116051493A (zh) * | 2022-12-30 | 2023-05-02 | 中铁武汉电气化局集团有限公司 | 接触网悬挂状态监测方法、装置、设备及存储介质 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006031919A1 (de) | 2006-07-10 | 2007-11-29 | Siemens Ag | Akustische Einrichtung zur Untersuchung eines Fahrdrahtes und Verwendung eines Schmiermittels |
| DE102007005859A1 (de) | 2007-02-06 | 2008-08-07 | Siemens Ag | Vorrichtung zum Erkennen eines mechanischen Defekts in einem Draht einer Oberleitung |
| DE102007015576A1 (de) | 2007-03-28 | 2008-10-02 | NH-Meßtechnik Heinz-Peter Neuhaus GmbH | Fahrdrahtüberwachungssystem und Verfahren zur Überwachung eines Fahrdrahtes |
| US20100253329A1 (en) | 2009-04-07 | 2010-10-07 | Gianni Arcaini | System and Apparatus for Automated Inspection of Overhead Electrical Traction Rail Car Pantographs |
| DE102009043215A1 (de) | 2009-09-28 | 2011-05-19 | Siemens Aktiengesellschaft | Verfahren und Anordnung zur Kontrolle von Stromabnehmern, Lichtraumprofilen und horizontaler und vertikaler Fahrdrahtposition an Fahrzeugverbänden |
| DE102010041715A1 (de) | 2010-09-30 | 2012-04-05 | Siemens Aktiengesellschaft | Überwachungseinrichtung für ein Kettenwerk einer Oberleitungsanlage |
| CN202159108U (zh) * | 2011-07-26 | 2012-03-07 | 广州科易光电技术有限公司 | 一种电气化铁路接触网车载红外监测系统 |
| CN102865891A (zh) | 2012-09-17 | 2013-01-09 | 西北工业大学 | 电气化铁路接触网无线监测系统 |
-
2020
- 2020-06-26 DE DE102020207963.3A patent/DE102020207963A1/de not_active Withdrawn
-
2021
- 2021-05-27 EP EP21731700.7A patent/EP4143056A1/de not_active Withdrawn
- 2021-05-27 WO PCT/EP2021/064228 patent/WO2021259587A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020207963A1 (de) | 2021-12-30 |
| WO2021259587A1 (de) | 2021-12-30 |
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