CN216117770U - Pavilion feeder fault traveling wave current sampling device of traction substation - Google Patents
Pavilion feeder fault traveling wave current sampling device of traction substation Download PDFInfo
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- CN216117770U CN216117770U CN202122510442.9U CN202122510442U CN216117770U CN 216117770 U CN216117770 U CN 216117770U CN 202122510442 U CN202122510442 U CN 202122510442U CN 216117770 U CN216117770 U CN 216117770U
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- rogowski coil
- traveling wave
- upper shell
- integrating circuit
- cylinder
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Abstract
The utility model discloses a feeder fault traveling wave current sampling device for a pavilion of a traction substation. The contact net rack is arranged above the rail and exposed to different environments, and the contact net has easy occurrence of faults. The utility model adopts two power supply modes of a solar cell panel and coupling power supply, acquires signals through the Rogowski coil sensor and the integrating circuit, and transmits the time of a fault moment traveling wave signal acquired by the integrating circuit output signal and the time service module to a superior control system through the communication module. The Rogowski coil is adopted for measurement sampling, so that the Rogowski coil has wider bandwidth and good linear characteristic, high-speed data acquisition is synchronized, and the accuracy of fault positioning is improved; simple to operate accomplishes contact net trouble travelling wave accurate positioning fast.
Description
Technical Field
The utility model belongs to the technical field of fault traveling wave current sampling devices, and particularly relates to a pavilion feeder fault traveling wave current sampling device for a traction substation.
Background
The contact net is erected above the rail in the open air, is exposed to different environments, and when the train runs, the pantograph and the contact net are in sliding friction, so that the contact net parts are easy to loosen and even fall off, and the contact net faults are easy to occur. Transient faults can be eliminated through reclosing, and therefore normal power supply of the system is recovered; for permanent failures, system outages and manual troubleshooting are required to eliminate them. With the progress of power supply mode and microcomputer technology, the contact network fault distance measurement method is continuously developed. From the impedance method in the early stage to the current ratio method which appears aiming at a specific traction mode, and then to the traveling wave method which is formed according to the modern traveling wave theory, the method has wide application in different periods. The traveling wave method is not affected by the overall impedance of the overhead line system (power supply mode), so that the application range is wide and the precision is high, and the traveling wave method gradually becomes one of the mainstream distance measurement methods at present.
The existing travelling wave positioning technology can accurately position by utilizing a travelling wave signal sent out AT a fault point during fault, a contact line cannot directly acquire the fault signal on the contact line because the contact line needs to be in direct contact with a pantograph of a train, and travelling wave current is usually acquired AT a network access point of a power supply feeder line of an electric substation (AT station, a subarea station), so that the problems of difficult installation position and the like exist; meanwhile, a train passes through the contact network most of the time, and a large impact current traveling wave exists when the train drives into the corresponding power supply arm, so that the amplitude range of traveling wave current signals on the contact network is wide, and the common sensor is difficult to extract the traveling wave at the fault moment. Therefore, certain requirements are provided for the installation position and the accuracy of the sensor of the overhead line system fault traveling wave current sampling device.
Disclosure of Invention
In order to make up for the defects of the prior art, the utility model provides the feeder fault traveling wave current sampling device for the traction substation pavilion, which is simple in structure, convenient to install and high in fault positioning precision.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a pull electric substation pavilion feeder fault traveling wave current sampling device, includes:
the upper shell is a semi-cylindrical shell with a hollow inner part, and a solar cell panel is arranged on the outer surface of the upper shell; the lower shell is a semi-cylindrical shell with a hollow inner part; the upper shell and the lower shell are fixedly connected into a cylinder through screws;
the coupling electricity-taking iron core is arranged in a cylinder formed by the upper shell and the lower shell and has the same axis with the cylinder; the Rogowski coil sensor is arranged in a cylinder formed by the upper shell and the lower shell and is coaxial with the cylinder; the storage battery, the integrating circuit, the communication module and the time service module are arranged inside a cylinder formed by the upper shell and the lower shell;
the solar cell panel and the coupling electricity-taking iron core are respectively connected with the storage battery; the storage battery is respectively connected with the Rogowski coil sensor, the integrating circuit, the communication module and the time service module;
the Rogowski coil sensor is connected with the integrating circuit, and the integrating circuit integrates the output voltage of the Rogowski coil sensor; the integration circuit is respectively connected with the communication module and the time service module, and the communication module transmits the output signal of the integration circuit and the fault moment traveling wave signal time collected by the time service module to a superior control system;
preferably, wire clamps are arranged at two ends of a cylinder formed by the upper shell and the lower shell.
The utility model has the beneficial effects that:
1) the Rogowski coil is adopted for measurement sampling, so that the Rogowski coil has wider bandwidth and good linear characteristic, high-speed data acquisition is synchronized, and the accuracy of fault positioning is improved;
2) the solar cell panel and the coupling electricity-taking iron core are adopted to charge the storage battery at the same time, so that the device has sufficient electric energy, and the working reliability of the whole device is improved;
3) the utility model has simple structure, convenient installation, no need of manual operation, small workload of maintenance and repair and wide market application prospect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the installation of the present invention;
FIG. 3 is a schematic diagram of the operation of the present invention;
in the figure, 1-an upper shell, 2-a lower shell, 3-a wire clamp, 4-a coupling power-taking iron core, 5-a Rogowski coil sensor, 6-a solar panel, 7-a storage battery, 8-an integrating circuit, 9-a communication module and 10-a time service module.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
As shown in fig. 1, the overall structure of the present invention is schematically illustrated, the upper casing 1 and the lower casing 2 are both semi-cylindrical and hollow inside, and are made of 304 stainless steel; the stainless steel material has high mechanical strength, and is corrosion-resistant and rusty; the upper shell 1 and the lower shell 2 are fixedly connected into a cylinder through screws; two ends of a cylinder consisting of the upper shell 1 and the lower shell 2 are provided with wire clamps 3; the wire clamp 3 is a standard part and is used for fixing equipment and preventing vibration and windage yaw;
a solar cell panel 6 is arranged on the outer surface of the upper shell 1; the solar panel is a device which directly or indirectly converts solar radiation energy into electric energy through a photoelectric effect or a photochemical effect by absorbing sunlight;
the coupling electricity-taking iron core 4 is arranged in a cylinder formed by the upper shell 1 and the lower shell 2 and has the same axis with the cylinder; the storage battery 7 is arranged inside a cylinder formed by the upper shell 1 and the lower shell 2;
the solar cell panel 6 and the coupling electricity-taking iron core 4 are respectively connected with the storage battery 7, the solar cell panel 6 and the coupling electricity-taking iron core 4 can charge the storage battery 7, and the working reliability of the whole device is improved by the two charging modes;
the Rogowski coil sensor 5 is arranged in a cylinder formed by the upper shell 1 and the lower shell 2 and is coaxial with the cylinder; the integrating circuit 8 is arranged inside a cylinder formed by the upper shell 1 and the lower shell 2; the Rogowski coil sensor 5 and the integrating circuit 8 realize the signal acquisition function of the device; the Rogowski coil sensor 5 measures alternating current flowing through a conductor and converts the alternating current into voltage to output, and the Rogowski coil adopts a non-magnetic coil core and has no nonlinear saturation effect, so that the measurement range is from several amperes to hundreds of kiloamperes;
the integrating circuit 8 integrates the output voltage, so that the characteristics of the original signal can be reflected more accurately, and the integrating circuit 8 can improve the dynamic response of the Rogowski coil; the integrating circuit 8 adopts the existing general module;
the communication module 9 and the time service module 10 are arranged inside a cylinder formed by the upper shell 1 and the lower shell 2; the communication module 9 is used for realizing data transmission and reception, and the time service module 10 is used for recording the time for acquiring the traveling wave signal at the fault moment;
the communication module 9 adopts the existing module, the model of the communication module is Quectrel EC25-E, the communication module has a plurality of working frequency bands, and the communication module can work in various different modes of GPRS/CDMA/4G and standard SIM interfaces; in addition, the system also has a network monitoring function, realizes data exchange with the controller through a serial port, realizes data verification and retransmission, and realizes real-time and accurate receiving and sending of data;
the time service module 10 is an existing module, in the embodiment, a high-precision clock chip of the SD2605 is adopted, the time service precision can reach the accuracy of 25 nanoseconds when the GPS signal is received well, the clock precision of 50 nanoseconds can be maintained within 24 hours after the GPS signal is not received, and after the GPS module is disconnected, the accuracy of the clock precision can be ensured by applying a GPS high-precision synchronous clock real-time iterative self-checking algorithm based on a digital phase locking principle;
the solar cell panel 6 and the coupling electricity-taking iron core 4 are respectively connected with the storage battery 7 through cables; the storage battery 7 is respectively connected with the Rogowski coil sensor 5, the integrating circuit 8, the communication module 9 and the time service module 10 through cables;
the Rogowski coil sensor 5 is connected with the integrating circuit 8 through a cable; the integrating circuit 8 is respectively connected with the communication module 9 and the time service module 10 through cables.
The working principle of the utility model is as follows: the solar cell panel 6 and the coupling electricity-taking iron core 4 charge the storage battery 7, and the storage battery 7 provides electric energy for the whole device; the Rogowski coil sensor 5 measures alternating current flowing through the conductor and converts the alternating current into voltage to output; the integration circuit performs integration processing on the output voltage and outputs the output voltage to the data processing module; and the communication module transmits the output signal of the integrating circuit and the fault moment traveling wave signal time collected by the time service module to a superior control system.
The utility model is arranged on the power supply line conductor, and for the double split conductor, the device only needs to be arranged on one of the sub-conductors, and the specific installation process is as follows: taking down the upper shell 1; sequentially taking down the wire clamps 3 at two ends, the coupling electricity-taking iron core 4 and the upper half part of the Rogowski coil sensor 5, and clamping the lower half part of the device on an insulated wire; sequentially mounting the wire clamps 3 at the two ends, the coupling electricity-taking iron core 4 and the upper half part of the Rogowski coil sensor 5, and locking by respective nuts; the upper housing 1 is installed to ensure the upper and lower portions of the upper housing 1 and the lower housing 2 are aligned, and the upper and lower portion connection screws are tightened.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model is not limited to the examples, and any equivalent changes to the technical solution of the utility model by a person skilled in the art after reading the description of the utility model are covered by the claims of the utility model.
Claims (2)
1. The utility model provides a pull pavilion feeder trouble traveling wave current sampling device of electric substation which characterized in that: the upper shell (1) is a semi-cylindrical hollow inside, and the outer surface of the upper shell is provided with a solar panel (6); the lower shell (2) is a semi-cylindrical hollow inside; the upper shell (1) and the lower shell (2) are fixedly connected into a cylinder through screws;
the coupling electricity-taking iron core (4) is arranged inside a cylinder formed by the upper shell (1) and the lower shell (2) and has the same axis with the cylinder; the Rogowski coil sensor (5) is arranged in a cylinder formed by the upper shell (1) and the lower shell (2) and is coaxial with the cylinder; the storage battery (7), the integrating circuit (8), the communication module (9) and the time service module (10) are arranged inside a cylinder formed by the upper shell (1) and the lower shell (2);
the solar cell panel (6) and the coupling electricity-taking iron core (4) are respectively connected with the storage battery (7); the storage battery (7) is respectively connected with the Rogowski coil sensor (5), the integrating circuit (8), the communication module (9) and the time service module (10);
the Rogowski coil sensor (5) is connected with the integrating circuit (8), and the integrating circuit (8) integrates the output voltage of the Rogowski coil sensor (5); the integration circuit (8) is respectively connected with the communication module (9) and the time service module (10), and the communication module (9) transmits the output signal of the integration circuit (8) and the fault time traveling wave signal time collected by the time service module (10) to a superior control system.
2. The feeder fault traveling wave current sampling device of the traction substation kiosk is characterized in that: and wire clamps (3) are arranged at two ends of a cylinder consisting of the upper shell (1) and the lower shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122510442.9U CN216117770U (en) | 2021-10-18 | 2021-10-18 | Pavilion feeder fault traveling wave current sampling device of traction substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122510442.9U CN216117770U (en) | 2021-10-18 | 2021-10-18 | Pavilion feeder fault traveling wave current sampling device of traction substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216117770U true CN216117770U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122510442.9U Active CN216117770U (en) | 2021-10-18 | 2021-10-18 | Pavilion feeder fault traveling wave current sampling device of traction substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216117770U (en) |
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2021
- 2021-10-18 CN CN202122510442.9U patent/CN216117770U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: BEIJING EPE TECHNOLOGY Co.,Ltd. Assignor: CHINA RAILWAY FIRST SURVEY AND DESIGN INSTITUTE GROUP Co.,Ltd. Contract record no.: X2023980040607 Denomination of utility model: A Fault Traveling Wave Current Sampling Device for Feed Lines in Traction Substations Granted publication date: 20220322 License type: Common License Record date: 20230829 |
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| EE01 | Entry into force of recordation of patent licensing contract |