CN211954199U - Submarine high-voltage cable fault positioning system based on electromagnetic sensing optical fiber technology - Google Patents
Submarine high-voltage cable fault positioning system based on electromagnetic sensing optical fiber technology Download PDFInfo
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- CN211954199U CN211954199U CN202020985119.XU CN202020985119U CN211954199U CN 211954199 U CN211954199 U CN 211954199U CN 202020985119 U CN202020985119 U CN 202020985119U CN 211954199 U CN211954199 U CN 211954199U
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Abstract
The utility model discloses a submarine high-voltage cable fault positioning system based on electromagnetic sensing optical fiber technology, which comprises a temperature measuring optical fiber, an electromagnetic sensing optical fiber, an online monitoring unit, an optical fiber temperature measuring unit, an optical fiber electromagnetic sensing unit and a wavelength division multiplexer; the temperature measuring optical fiber and the electromagnetic sensing optical fiber are wrapped in the submarine high-voltage cable to be measured, the online monitoring unit is connected with the optical fiber temperature measuring unit and the optical fiber electromagnetic sensing unit, the optical fiber temperature measuring unit is connected with the temperature measuring optical fiber through the wavelength division multiplexer, the optical fiber electromagnetic sensing unit is connected with the electromagnetic sensing optical fiber through the wavelength division multiplexer, and the system can accurately position fault points of the submarine high-voltage cable.
Description
Technical Field
The utility model belongs to the technical field of electric power monitoring equipment, a seabed high tension cable fault location system based on electromagnetic sensing optical fiber technique is related to.
Background
With the acceleration of the development process of ocean resources, the application of the submarine high-voltage cable is more and more extensive, in particular to the fields of new energy development and the like. However, since the service environment of the submarine high-voltage cable is very complex, damage and fracture accidents to the submarine cable caused by scouring of sea waves and ocean currents, environmental corrosion, material aging, mechanical damage, human factor damage and the like sometimes occur, which affect the safety production at sea and bring about great economic loss.
Because the repair operation difficulty of the submarine high-voltage cable at sea is high, the damaged submarine cable can be effectively and quickly salvaged and the damaged part can be repaired by accurately positioning the fault position of the submarine high-voltage cable, so that the economic loss is reduced as much as possible. At present, a fault monitoring means of a submarine high-voltage cable mainly comprises a temperature change measurement method through a temperature measurement optical fiber, a time domain reflection method and the like, in the case of the conventional fault, the influence of the submarine cable fault on the temperature is small, the accuracy of the temperature measurement optical fiber is very low, the time domain reflection method can only measure the theoretical position, and the result has a large difference with the position of an actual fault point.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a seabed high tension cable fault location system based on electromagnetic sensing optical fiber technique, this system can pinpoint seabed high tension cable's fault point.
In order to achieve the above object, the submarine high-voltage cable fault location system based on electromagnetic sensing optical fiber technology of the present invention comprises a temperature measuring optical fiber, an electromagnetic sensing optical fiber, an online monitoring unit, an optical fiber temperature measuring unit, an optical fiber electromagnetic sensing unit and a wavelength division multiplexer;
the temperature measuring optical fiber and the electromagnetic sensing optical fiber are wrapped in the submarine high-voltage cable to be measured, the online monitoring unit is connected with the optical fiber temperature measuring unit and the optical fiber electromagnetic sensing unit, the optical fiber temperature measuring unit is connected with the temperature measuring optical fiber through a wavelength division multiplexer, and the optical fiber electromagnetic sensing unit is connected with the electromagnetic sensing optical fiber through the wavelength division multiplexer.
The temperature measuring optical fibers are distributed along the axial direction of the submarine high-voltage cable to be measured.
The electromagnetic sensing optical fibers are distributed along the axial direction of the submarine high-voltage cable to be tested.
The submarine high-voltage cable to be tested is a three-phase system type submarine high-voltage cable made of cross-linked polyethylene insulating materials.
The system also comprises a communication module used for connecting the online monitoring unit with external equipment.
The utility model discloses following beneficial effect has:
submarine high tension cable fault location system based on electromagnetic sensing optical fiber technique when concrete operation, utilize electromagnetic sensing optical fiber technique to remedy the shortcoming that the exclusive use temperature measurement optical fiber precision is relatively poor, simultaneously can be through the monitoring of on-line monitoring unit to electromagnetic signal, it is specific, when submarine high tension cable's that awaits measuring temperature fluctuation point and electromagnetic field change point are located same position, then tentatively judge and explain this position department and break down, realize the accurate positioning of high-pressure submarine cable fault point, shorten maintenance duration, ensure safe operation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is an online monitoring unit, 2 is an optical fiber temperature measuring unit, 3 is a wavelength division multiplexer, 4 is an optical fiber electromagnetic sensing unit, 5 is a temperature measuring optical fiber, 6 is an electromagnetic sensing optical fiber, and 7 is a submarine high-voltage cable to be measured.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the submarine high-voltage cable fault location system based on electromagnetic sensing fiber technology of the present invention includes a temperature measurement fiber 5, an electromagnetic sensing fiber 6, an online monitoring unit 1, a fiber temperature measurement unit 2, a fiber electromagnetic sensing unit 4, and a wavelength division multiplexer 3; the temperature measuring optical fiber 5 and the electromagnetic sensing optical fiber 6 are wrapped in a submarine high-voltage cable 7 to be measured, the online monitoring unit 1 is connected with the optical fiber temperature measuring unit 2 and the optical fiber electromagnetic sensing unit 4, the optical fiber temperature measuring unit 2 is connected with the temperature measuring optical fiber 5 through the wavelength division multiplexer 3, and the optical fiber electromagnetic sensing unit 4 is connected with the electromagnetic sensing optical fiber 6 through the wavelength division multiplexer 3.
The temperature measuring optical fibers 5 are distributed along the axial direction of the submarine high-voltage cable 7 to be measured; the electromagnetic sensing optical fibers 6 are distributed along the axial direction of the submarine high-voltage cable 7 to be tested; the submarine high-voltage cable 7 to be tested is a three-phase system type submarine high-voltage cable made of cross-linked polyethylene insulating materials. The utility model discloses still including the communication module that is used for on-line monitoring unit 1 to be connected with external equipment.
The utility model discloses a concrete operation does:
the optical fiber temperature measuring unit 2 is connected with a temperature measuring optical fiber 5 through a wavelength division multiplexer 3, the online monitoring unit 1 acquires temperature data of each measuring point of the submarine high-voltage cable 7 to be measured through the temperature measuring optical fiber 5, the optical fiber electromagnetic sensing unit 4 is connected with an electromagnetic sensing optical fiber 6 through the wavelength division multiplexer 3, and the online monitoring unit 1 acquires electromagnetic field data of each measuring point of the submarine high-voltage cable 7 to be measured through the electromagnetic sensing optical fiber 6;
the online monitoring unit 1 determines a temperature fluctuation point and an electromagnetic field change point of the submarine high-voltage cable 7 to be detected according to the temperature data and the electromagnetic field data, when the temperature fluctuation point and the electromagnetic field change point of the submarine high-voltage cable 7 to be detected are located at the same position, the position is preliminarily judged and indicated to have a fault, alarm information is generated, and then the alarm information and the position information of the position are sent to external equipment.
During actual operation, after receiving the alarm information and the position information, the external equipment informs the cruise ship to slowly sail according to the submarine cable route, and drives to the fault position to finally determine the fault.
Claims (5)
1. A submarine high-voltage cable fault positioning system based on an electromagnetic sensing optical fiber technology is characterized by comprising a temperature measuring optical fiber (5), an electromagnetic sensing optical fiber (6), an online monitoring unit (1), an optical fiber temperature measuring unit (2), an optical fiber electromagnetic sensing unit (4) and a wavelength division multiplexer (3);
temperature measurement optic fibre (5) and electromagnetic sensing optic fibre (6) all wrap up in the submarine high tension cable (7) that awaits measuring, and on-line monitoring unit (1) is connected with optic fibre temperature measurement unit (2) and optic fibre electromagnetic sensing unit (4), and optic fibre temperature measurement unit (2) are connected with temperature measurement optic fibre (5) through wavelength division multiplexer (3), and optic fibre electromagnetic sensing unit (4) are connected with electromagnetic sensing optic fibre (6) through wavelength division multiplexer (3).
2. The submarine high-voltage cable fault location system based on electromagnetic sensing fiber technology according to claim 1, wherein the temperature measuring fibers (5) are distributed along the axial direction of the submarine high-voltage cable (7) to be tested.
3. The submarine high-voltage cable fault locating system based on electromagnetic sensing fiber technology according to claim 1, wherein the electromagnetic sensing fibers (6) are distributed along the axial direction of the submarine high-voltage cable (7) to be tested.
4. The submarine high-voltage cable fault location system based on electromagnetic sensing fiber technology of claim 1, wherein the submarine high-voltage cable (7) to be tested is a cross-linked polyethylene insulation three-phase system type submarine high-voltage cable.
5. The submarine high-voltage cable fault location system based on electromagnetic sensing fiber technology according to claim 1, further comprising a communication module for connecting the on-line monitoring unit (1) with external equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020985119.XU CN211954199U (en) | 2020-06-02 | 2020-06-02 | Submarine high-voltage cable fault positioning system based on electromagnetic sensing optical fiber technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020985119.XU CN211954199U (en) | 2020-06-02 | 2020-06-02 | Submarine high-voltage cable fault positioning system based on electromagnetic sensing optical fiber technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211954199U true CN211954199U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020985119.XU Active CN211954199U (en) | 2020-06-02 | 2020-06-02 | Submarine high-voltage cable fault positioning system based on electromagnetic sensing optical fiber technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN211954199U (en) |
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2020
- 2020-06-02 CN CN202020985119.XU patent/CN211954199U/en active Active
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