CN110687401A - Fault detection system and method for overhead contact system on railway - Google Patents
Fault detection system and method for overhead contact system on railway Download PDFInfo
- Publication number
- CN110687401A CN110687401A CN201911052234.XA CN201911052234A CN110687401A CN 110687401 A CN110687401 A CN 110687401A CN 201911052234 A CN201911052234 A CN 201911052234A CN 110687401 A CN110687401 A CN 110687401A
- Authority
- CN
- China
- Prior art keywords
- current
- fault
- rail
- detection
- time
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a fault detection system of a contact network on a railway, which comprises a closed current loop formed between a rail, the contact network and a train, and further comprises: the detection terminals are arranged on the rail and provided with position identification information, and the detection terminals are used for detecting whether the current on the rail in the current loop changes or not and recording the time when the current on the rail changes; and the fault judging device is used for receiving the time of the change of the current recorded by all the detection terminals, judging that the contact network has a fault if a plurality of detected currents have the same time of the change, and determining the position of the contact network with the fault according to the position identification information corresponding to the detection terminal with the changed current, otherwise, judging that the contact network has no fault. The method for detecting the fault position of the contact network line is accurate, simple and safe.
Description
Technical Field
The invention relates to the technical field of railway electrical fault judgment, in particular to a fault detection system and method for a contact network on a railway.
Background
The railway junction is a hub for connecting the trunk lines and the branch lines of the railway, a power supply system in the railway junction area needs to ensure the normal operation and power supply of locomotives of the trunk lines and the branch lines of the railway at the same time, and a contact network in the railway junction area usually has a multi-branch form and a complex grid structure. When a line in a railway junction area has a fault, the existing fault detection means cannot well provide fault detection guidance, and for example, a contact network worker needs to patrol each power supply branch one by one on the premise that the position of the fault cannot be determined.
In the prior art, an in-station fault distance measuring device is used for determining the distance from a fault to traction according to impedance, the error of a detection result is relatively large due to the interference of branch line impedance, and meanwhile, a plurality of possible fault points are generated only when the distance from the fault to the traction is short, so that the guiding significance for actual fault inspection is not great under the condition that the branch line is at which the fault point is located.
In order to further determine the fault position, a part of fault detection devices adopt a theory similar to a distribution line fault indicator, namely a short-circuit current triggering principle, when a contact network line has a fault, a short-circuit current flows through an electric channel from a fault point to a traction substation, and the fault position and a branch line where the fault is located can be well judged by detecting the short-circuit current. However, the fault indicator adopting the short-circuit current triggering principle cannot distinguish the running current passed by the normal locomotive from the short-circuit current of the fault, so that the malfunction is frequent, the actual application effect is not ideal, and in the actual engineering application, the installation of equipment on the contact network in the driving area is not allowed, which also causes that the scheme similar to the fault indicator cannot be promoted in the actual engineering implementation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a system and a method for detecting the fault of a contact network on a railway, wherein the method for detecting the fault position of the contact network line is accurate, simple and safe.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a fault detection system for a catenary on a railway, including a closed current loop formed between a rail, the catenary, and a train, where the fault detection system further includes:
the detection terminals are arranged on the rails, and all the detection terminals are provided with position identification information and used for detecting whether the current on the rails in the current loop changes or not and recording the time when the current on the rails changes when the current on the rails is detected to change;
and the fault judgment device is used for receiving the time of the change of the current recorded by all the detection terminals, judging that the contact network has a fault if a plurality of detected currents have the same time of change, and determining the position of the contact network with the fault according to the position identification information corresponding to the detection terminal with the changed current, otherwise, judging that the contact network has no fault.
On the basis of the technical scheme, the rails comprise a main line rail and a plurality of branch line rails, and a plurality of detection terminals are uniformly distributed on the main line rail and the branch line rails.
On the basis of the above technical solution, the location identification information includes: the number of the detection terminal and the position of the detection terminal.
On the basis of the technical scheme, the time when the current detected by the detection terminal changes is the initial time when the detection terminal detects the load current and/or the fault current on the rail.
On the basis of the above technical solution, the detection terminal includes:
the sensor is arranged on a rail bolt of the rail and is used for collecting current on the rail in the current loop;
and the processor is connected with the sensor and is used for processing all the current collected by the sensor and acquiring the time when the current changes.
In a second aspect, an embodiment of the present invention further provides a method for detecting a fault of a catenary on a railway, where the method is used to detect a closed current loop formed between a rail, the catenary, and a train, and the method includes the following steps:
laying a plurality of detection terminals on the rail in advance, wherein position identification information is prestored in all the detection terminals;
the detection terminal detects whether the current on the rail in the current loop changes or not, and records the time when the current on the rail changes;
and receiving the time of the change of the current recorded by all the detection terminals by using a fault judgment device, judging whether a plurality of detected currents have the same time of the change, if so, judging that the contact network has a fault, and determining the position of the contact network with the fault according to the position identification information corresponding to the detection terminal with the changed current, otherwise, judging that the contact network does not have the fault.
On the basis of the technical scheme, the rails comprise a main line rail and a plurality of branch line rails, and a plurality of detection terminals are uniformly distributed on the main line rail and the branch line rails.
On the basis of the above technical solution, the location identification information includes: the number of the detection terminal and the position of the detection terminal.
On the basis of the technical scheme, the time when the current detected by the detection terminal changes is the initial time when the detection terminal detects the load current and/or the fault current on the rail.
On the basis of the above technical solution, the detection terminal includes:
the sensor is arranged on a rail bolt of the rail and is used for collecting current on the rail in the current loop;
and the processor is connected with the sensor and is used for processing all the current collected by the sensor and acquiring the time when the current changes.
Compared with the prior art, the invention has the advantages that:
the invention provides a fault detection system of a contact network on a railway, wherein monitoring points are arranged on a rail, detection terminals can acquire current change and time of the current change, whether a contact network line has a fault or not is determined according to the relation between the time of the current change corresponding to a plurality of detection terminals, namely whether the current change occurs simultaneously or not, meanwhile, load current or fault current can be determined according to the rule between the time, the position of the fault is determined according to the position identification of the detection terminals, and the detection mode is accurate, simple and safe.
Drawings
FIG. 1 is a schematic diagram of a current loop of a train operating on a rail in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a current loop between detection point B1 and detection point B2 on the feeder rail B in accordance with an embodiment of the present invention;
fig. 3 is a schematic diagram of a current loop in the embodiment of the present invention when a fault occurs between the detection point C1 and the detection point C2 on the branch rail C.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Examples
Referring to fig. 1, an embodiment of the present invention provides a fault detection system for a catenary on a railway, including a closed current loop formed between a rail, the catenary, and a train, where the fault detection system further includes:
the detection terminals are arranged on the rails, and all the detection terminals are provided with position identification information and used for detecting whether the current on the rails in the current loop changes or not and recording the time when the current on the rails changes when the current on the rails is detected to change;
and the fault judgment device is used for receiving the time of the change of the current recorded by all the detection terminals, judging that the contact network has a fault if a plurality of detected currents have the same time of change, and determining the position of the contact network with the fault according to the position identification information corresponding to the detection terminal with the changed current, otherwise, judging that the contact network has no fault.
When a train runs on a rail, a closed current loop can be formed between the train and the rail and between the train and a contact network, wherein a traction cable is a power supply, and a detection terminal on the rail is sequentially connected into the current loop, so that the detection terminal can gradually acquire increased current along with the gradual approach of the train, and a plurality of detection terminals in the current loop are sequentially arranged to sequentially change the time for acquiring the increased current; when the train runs to a fault position of the contact network line, a plurality of detection terminals on a fault loop simultaneously acquire increased current, and the law of the time when the current detected by the detection terminals changes is recorded, so that the fault of the contact network line can be determined, and the load current and the fault current of the train in the running process can be effectively distinguished; meanwhile, each detection terminal is provided with position identification information, when a fault occurs, the position of the detection terminal is determined through the recorded time, the position where the fault occurs can be judged, and the detection mode determines that the fault point is accurate, simple, safe and reliable.
And the detection terminal is arranged on the rail, and detection equipment does not need to be suspended on a contact network, so that the construction is simple and convenient, and the detection device is safer and more reliable.
Furthermore, the rails comprise a main line rail and a plurality of branch line rails, and a plurality of detection terminals are uniformly distributed on the main line rail and the branch line rails. In the embodiment, each main line rail and each branch line rail are provided with a detection terminal, so that the time recorded by the detection terminal can be used, the relation among the time recorded by all the detection terminals can be calculated, and the branch line and the section with the fault can be accurately judged.
Specifically, the location identification information includes: the number of the detection terminal and the position of the detection terminal. The position of the detection terminal can be information such as branches and sections.
In this embodiment, the fault short circuit and the running current of the train, that is, the fault current and the load current, can also be effectively distinguished, specifically, the time when the current detected by the detection terminal changes is the initial time when the detection terminal detects the load current and/or the fault current on the rail; the fault judging device judges whether the recorded time for changing the current is the same or not, if so, the detection terminal detects that the current on the rail is the fault current, and the time for changing the current is the initial time of the fault current; otherwise, the detection terminal detects that the current on the rail is the load current, and the time when the current changes is the initial time of the load current.
As shown in fig. 2, this is the case when the fault occurs between detection point B1 and detection point B2 on the spur rail B. When a train runs from a main track A to a branch track B, detection points A1, A2, A3 and B1 are sequentially connected into a current loop, the time of change of current detected by corresponding detection terminals of the detection points A1, A2, A3 and B1 is sequentially changed, when the train is about to reach a detection point B2, a short-circuit grounding fault occurs to a catenary, the current loop of the catenary becomes a fault loop, the detection terminals at the detection points A1, A2, A3 and B1 simultaneously detect the change of current, and a section between a detection point B1 and a detection point B2 which is about to reach the fault on the branch track B is determined.
As shown in fig. 3, this is the case when a fault occurs on the feeder rail C between detection point C1 and detection point C2. When a train runs from a main track A to a branch track C, detection points A1, A2, A3 and C1 are sequentially connected into a current loop, the time of change of current detected by corresponding detection terminals of the detection points A1, A2, A3 and C1 is sequentially changed, when the train is about to reach the detection point C2, a short-circuit grounding fault occurs to a catenary, the current loop of the catenary becomes a fault loop, the detection terminals at the detection points A1, A2, A3 and C1 simultaneously detect the change of current, and a section between the detection point C1 and the detection point C2 which is about to reach the fault on the branch track C is determined.
In conclusion, when the railway junction on the railway is complicated, the branches do not interfere with each other, the position of the fault can be accurately judged through the recorded time, such as a section or a branch line, and operation and maintenance personnel can conveniently patrol the fault line.
Specifically, the detection terminal comprises a sensor and a processor; the sensor is arranged on a rail bolt of the rail and is used for collecting current on the rail in the current loop; the processor is connected with the sensor and used for processing all the currents collected by the sensor and acquiring the time when the currents change. The detection mode is simple and feasible.
The embodiment of the invention also provides a fault detection method of a contact network on a railway, which is used for detecting a closed current loop formed among a rail, the contact network and a train, and the fault detection method comprises the following steps:
laying a plurality of detection terminals on the rail in advance, wherein position identification information is prestored in all the detection terminals;
the detection terminal detects whether the current on the rail in the current loop changes or not, and records the time when the current on the rail changes;
and receiving the time of the change of the current recorded by all the detection terminals by using a fault judgment device, judging whether a plurality of detected currents have the same time of the change, if so, judging that the contact network has a fault, and determining the position of the contact network with the fault according to the position identification information corresponding to the detection terminal with the changed current, otherwise, judging that the contact network does not have the fault.
Furthermore, the rails comprise a main line rail and a plurality of branch line rails, and a plurality of detection terminals are uniformly distributed on the main line rail and the branch line rails. In the embodiment, each main line rail and each branch line rail are provided with a detection terminal, so that the time recorded by the detection terminal can be used, the relation among the time recorded by all the detection terminals can be calculated, and the branch line and the section with the fault can be accurately judged.
Specifically, the location identification information includes: the number of the detection terminal and the position of the detection terminal. The position of the detection terminal can be information such as branches and sections.
In this embodiment, the fault short circuit and the running current of the train, that is, the fault current and the load current, can also be effectively distinguished, specifically, the time when the current detected by the detection terminal changes is the initial time when the detection terminal detects the load current and/or the fault current on the rail; the fault judging device judges whether the recorded time for changing the current is the same or not, if so, the detection terminal detects that the current on the rail is the fault current, and the time for changing the current is the initial time of the fault current; otherwise, the detection terminal detects that the current on the rail is the load current, and the time when the current changes is the initial time of the load current.
In this embodiment, the fault short circuit and the running current of the train, that is, the fault current and the load current, can also be effectively distinguished, specifically, the time when the current detected by the detection terminal changes is the initial time when the detection terminal detects the load current and/or the fault current on the rail; the fault judging device judges whether the recorded time for changing the current is the same or not, if so, the detection terminal detects that the current on the rail is the fault current, and the time for changing the current is the initial time of the fault current; otherwise, the detection terminal detects that the current on the rail is the load current, and the time when the current changes is the initial time of the load current.
Specifically, the detection terminal comprises a sensor and a processor; the sensor is arranged on a rail bolt of the rail and is used for collecting current on the rail in the current loop; the processor is connected with the sensor and used for processing all the currents collected by the sensor and acquiring the time when the currents change.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The utility model provides a fault detection system of contact net on railway, includes the closed current loop that forms between rail, contact net and the train, its characterized in that, fault detection system still includes:
the detection terminals are arranged on the rails, and all the detection terminals are provided with position identification information and used for detecting whether the current on the rails in the current loop changes or not and recording the time when the current on the rails changes when the current on the rails is detected to change;
and the fault judgment device is used for receiving the time of the change of the current recorded by all the detection terminals, judging that the contact network has a fault if a plurality of detected currents have the same time of change, and determining the position of the contact network with the fault according to the position identification information corresponding to the detection terminal with the changed current, otherwise, judging that the contact network has no fault.
2. The system of claim 1, wherein the rails include a main rail and a plurality of branch rails, and the main rail and the branch rails are provided with a plurality of test terminals.
3. The system for detecting a fault in a contact line on a railway of claim 1 or 2, wherein the location identification information includes: the number of the detection terminal and the position of the detection terminal.
4. The system of claim 1, wherein the time when the current detected by the detection terminal changes is an initial time when the detection terminal detects the load current and/or the fault current on the rail.
5. The system for detecting the fault of the overhead contact line on the railway according to claim 1 or 4, wherein the detection terminal comprises:
the sensor is arranged on a rail bolt of the rail and is used for collecting current on the rail in the current loop;
and the processor is connected with the sensor and is used for processing all the current collected by the sensor and acquiring the time when the current changes.
6. A fault detection method for a catenary on a railway, for detecting a closed current loop formed between a rail, the catenary, and a train, the fault detection method comprising the steps of:
laying a plurality of detection terminals on the rail in advance, wherein position identification information is prestored in all the detection terminals;
the detection terminal detects whether the current on the rail in the current loop changes or not, and records the time when the current on the rail changes;
and receiving the time of the change of the current recorded by all the detection terminals by using a fault judgment device, judging whether a plurality of detected currents have the same time of the change, if so, judging that the contact network has a fault, and determining the position of the contact network with the fault according to the position identification information corresponding to the detection terminal with the changed current, otherwise, judging that the contact network does not have the fault.
7. The method of claim 6, wherein the rails comprise a main rail and a plurality of branch rails, and the main rail and the branch rails are provided with a plurality of test terminals.
8. The method for detecting a fault in a catenary on a railway according to claim 6 or 7, wherein the location identification information includes: the number of the detection terminal and the position of the detection terminal.
9. The method of claim 6, wherein the time when the current detected by the detection terminal changes is an initial time when the detection terminal detects the load current and/or the fault current on the rail.
10. The method for detecting the fault of the overhead contact line on the railway according to claim 6 or 9, wherein the detection terminal comprises:
the sensor is arranged on a rail bolt of the rail and is used for collecting current on the rail in the current loop;
and the processor is connected with the sensor and is used for processing all the current collected by the sensor and acquiring the time when the current changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052234.XA CN110687401A (en) | 2019-10-31 | 2019-10-31 | Fault detection system and method for overhead contact system on railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052234.XA CN110687401A (en) | 2019-10-31 | 2019-10-31 | Fault detection system and method for overhead contact system on railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110687401A true CN110687401A (en) | 2020-01-14 |
Family
ID=69115107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911052234.XA Pending CN110687401A (en) | 2019-10-31 | 2019-10-31 | Fault detection system and method for overhead contact system on railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110687401A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650471A (en) * | 2020-05-26 | 2020-09-11 | 武汉三相电力科技有限公司 | Railway station yard fault positioning equipment, power supply system and fault positioning method |
| CN112562234A (en) * | 2020-12-22 | 2021-03-26 | 龙岩烟草工业有限责任公司 | Equipment fault point positioning method and device |
-
2019
- 2019-10-31 CN CN201911052234.XA patent/CN110687401A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650471A (en) * | 2020-05-26 | 2020-09-11 | 武汉三相电力科技有限公司 | Railway station yard fault positioning equipment, power supply system and fault positioning method |
| CN112562234A (en) * | 2020-12-22 | 2021-03-26 | 龙岩烟草工业有限责任公司 | Equipment fault point positioning method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019091069A1 (en) | Track circuit fault diagnosis system and diagnosis method | |
| CN202735466U (en) | Electrification railway contact net comprehensive intelligent alarm system | |
| CN106291235A (en) | Railway run-through circuit cable method for monitoring operation states | |
| CN203054148U (en) | Running state online monitoring system of electrified railway overhead contact line equipment | |
| CN110687401A (en) | Fault detection system and method for overhead contact system on railway | |
| CN108828393A (en) | DC110V on-line insulation monitoring system and method | |
| CN106184288A (en) | A kind of direct current track switch notch state detection method | |
| CN103616620A (en) | Traction substation feeder cable partial discharge monitoring device and monitoring method | |
| CN111025079A (en) | Fault type judgment method and device for full-parallel AT power supply contact network | |
| CN104155568A (en) | Method for accurately positioning lightning conductor, struck by lightning, of power transmission line | |
| AU2018305713B2 (en) | Method and device for locating faults along an energy supply chain for DC current systems | |
| US11124210B2 (en) | Route monitoring system and method | |
| CN103171587B (en) | A kind of electrified railway ground magnetic pillow dynamic detection system and method for inspection | |
| CN211123112U (en) | Fault detection system of overhead contact system on railway | |
| CN111076750B (en) | Device and method for detecting looseness of catenary dropper wire clamp | |
| CN113954918B (en) | Outdoor monitoring system for track circuit in station | |
| CN110920670A (en) | Outdoor monitoring and diagnosing system for track circuit | |
| CN112034393B (en) | Breakpoint diagnosis method and system for main circuit of power supply of overhead contact system | |
| JP2004074924A (en) | Protective device of feeding circuit | |
| CN111854586B (en) | Train pantograph position detection method and device based on electric field intensity change | |
| EP3718853A1 (en) | Method, system and vehicle for localizing defective parts of power supply systems in railways applications | |
| CN202815151U (en) | Overhead line system fault determination apparatus | |
| KR20140041295A (en) | Apparatus for measuring percentage of contact on catneary | |
| CN111413577A (en) | Subway traction network fault location system and method based on non-contact measurement | |
| CN110596537A (en) | Intelligent comprehensive grounding state monitoring method and device applying traction power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |