CN218038653U - Rat-proof strong current interference resistant coaxial monitoring cable special for smart power grid - Google Patents
Rat-proof strong current interference resistant coaxial monitoring cable special for smart power grid Download PDFInfo
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- CN218038653U CN218038653U CN202222083197.2U CN202222083197U CN218038653U CN 218038653 U CN218038653 U CN 218038653U CN 202222083197 U CN202222083197 U CN 202222083197U CN 218038653 U CN218038653 U CN 218038653U
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Abstract
The utility model provides a special coaxial monitoring cable of smart power grids that protection against rodents is able to bear or endure strong electric interference, its characterized in that includes solid copper conductor, the solid copper conductor outward in proper order the cladding have polypropylene high-voltage insulation layer, polyester band layer, first copper wire weaving layer, second copper wire weaving layer, glass fiber weaving layer and high molecular weight polyethylene sheath. The novel monitoring device has the advantages of being simple in structure, small in cross section, light, suitable for monitoring various new and old power grid lines, simultaneously having the characteristics of mouse prevention, water prevention and strong electric field resistance, being suitable for monitoring line characteristics of the power grid without power outage, and having good application value.
Description
Technical Field
The utility model relates to a power cable technical field especially relates to a special coaxial monitoring cable of smart power grids of resistant forceful electric power interference of protection against rodents.
Background
At present, most of power cables for underground power distribution adopt 10KV crosslinked polyethylene insulated power cables, crosslinked polyethylene insulation has excellent electrical performance and heat deformation resistance, has application history of about more than dozens of years, and is still widely used as a cable insulation material in the future due to the excellent performance.
However, under the action of an alternating current electric field and moisture, a water tree aging phenomenon often occurs in the medium-voltage cable, which is a main cause for inducing the damage of the medium-voltage power cable, so that the condition that the voltage resistance level is reduced due to the fact that the water tree aging phenomenon is generated in the insulation of the cable after the cable is installed and put into operation for a period of time or not and how to diagnose and detect the voltage resistance level is difficult for power design and manufacturing technicians in the intelligent power grid due to the fact that a large number of crosslinked polyethylene insulated ultrahigh-voltage cables are applied to the intelligent power grid along with the rapid development of power technology must be diagnosed and found in advance.
Disclosure of Invention
The utility model provides a special coaxial monitoring cable of smart power grids of resistant forceful electric power interference of protection against rodents for control 10KV power cable's water tree ageing phenomenon, simple structure, the cross-section small cable is light, is applicable to the control of various new and old electric wire netting circuit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a special coaxial monitoring cable of smart power grids that rat-proof is able to bear or endure strong current interference which characterized in that includes solid copper conductor, the solid copper conductor outward in proper order the cladding have polypropylene high voltage insulation layer, polyester band layer, first copper wire weaving layer, second copper wire weaving layer, glass fiber weaving layer and high molecular weight polyethylene sheath.
The further scheme is as follows: in order to prevent the braided copper wires from damaging the insulation, the thickness of the polyester wrapping tape is 0.038mm.
The further scheme is as follows: in order to shield strong electromagnetic field radiation around, the resistance is set to a specific value according to actual needs, and the weaving density of the first copper wire woven layer and the second copper wire woven layer is greater than or equal to 93%.
The further scheme is as follows: the convex branches have pricking effect on mouse mouths after the glass fibers are broken, so that the cable is prevented from being bitten by mice, and the density of the woven layer of the glass fibers is more than or equal to 85%.
The utility model discloses a theory of operation is: a coaxial monitoring cable is laid beside a 10KV power cable in parallel, the coaxial monitoring cable is used as both a grounding cable and a monitoring cable, when the coaxial monitoring cable is used, a solid copper wire of the coaxial monitoring cable can be connected with a conductor direct-current resistance bridge of the 10KV power cable, a first copper wire woven layer and a second copper wire woven layer are connected with the other testing end of the bridge, a solid conductor at the other end of the coaxial monitoring cable is connected with the first copper wire woven layer and the second copper wire woven layer, the conductor resistance of the coaxial monitoring cable and the loop resistance of the copper wire woven layers can be measured, the constant value is usually a constant value, when the loop resistance is greatly fluctuated due to the influence of temperature, the testing value is abnormal, and the monitoring on the water tree aging phenomenon of the 10KV power cable is realized.
The utility model has the advantages that: the novel monitoring device has the advantages of being simple in structure, small in cross section, light, suitable for monitoring various new and old power grid lines, simultaneously having the characteristics of mouse prevention, water prevention and strong electric field resistance, being suitable for monitoring line characteristics of the power grid without power outage, and having good application value.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
Referring to the attached drawings, the rat-proof strong-current-interference-resistant special coaxial monitoring cable for the smart grid comprises a solid copper conductor 1 and a solid copper conductor 1, wherein the solid copper conductor 1 is sequentially coated with a polypropylene high-voltage insulating layer 2, a polyester belting layer 3, a first copper wire woven layer 4, a second copper wire woven layer 5, a glass fiber woven layer 6 and a high-molecular-weight polyethylene sheath 7.
In order to prevent the braided copper wires from damaging the insulation, the thickness of the polyester belting layer 3 is 0.038mm.
In order to shield strong electromagnetic field radiation around, the resistance is set to a specific value according to actual needs, and the weaving density of the first copper braided layer 4 and the second copper braided layer 5 is greater than or equal to 93%.
Because the branches have a pricking effect on mouse mouths after the glass fibers are broken, in order to prevent the cable from being bitten by mice, the density of the woven layer of the glass fiber woven layer 6 is more than or equal to 85 percent.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a special coaxial monitoring cable of smart power grids that protection against rodents is able to bear or endure strong electric interference, its characterized in that includes solid copper conductor, the solid copper conductor outward in proper order the cladding have polypropylene high-voltage insulation layer, polyester band layer, first copper wire weaving layer, second copper wire weaving layer, glass fiber weaving layer and high molecular weight polyethylene sheath.
2. The rat-proof strong-current-interference-resistant coaxial monitoring cable special for the smart grid as claimed in claim 1, wherein the thickness of the polyester wrapping layer is 0.038mm.
3. The special coaxial monitoring cable for the intelligent power grid for preventing the rats and resisting the strong electric interference as claimed in claim 1 or 2, wherein the weaving density of the first copper braided layer and the second copper braided layer is greater than or equal to 93%.
4. The special coaxial monitoring cable for the intelligent power grid for preventing the rats and the strong electric interference as claimed in claim 1 or 2, wherein the density of the woven layer of the glass fiber is greater than or equal to 85%.
5. The special coaxial monitoring cable for the intelligent power grid for preventing the rats and the strong electric interference as claimed in claim 3, wherein the density of the woven layer of the glass fiber is greater than or equal to 85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222083197.2U CN218038653U (en) | 2022-08-09 | 2022-08-09 | Rat-proof strong current interference resistant coaxial monitoring cable special for smart power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222083197.2U CN218038653U (en) | 2022-08-09 | 2022-08-09 | Rat-proof strong current interference resistant coaxial monitoring cable special for smart power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218038653U true CN218038653U (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222083197.2U Active CN218038653U (en) | 2022-08-09 | 2022-08-09 | Rat-proof strong current interference resistant coaxial monitoring cable special for smart power grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218038653U (en) |
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2022
- 2022-08-09 CN CN202222083197.2U patent/CN218038653U/en active Active
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