CN202815060U - Current sensor for high voltage line - Google Patents
Current sensor for high voltage line Download PDFInfo
- Publication number
- CN202815060U CN202815060U CN 201220442517 CN201220442517U CN202815060U CN 202815060 U CN202815060 U CN 202815060U CN 201220442517 CN201220442517 CN 201220442517 CN 201220442517 U CN201220442517 U CN 201220442517U CN 202815060 U CN202815060 U CN 202815060U
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- current sensor
- insulating ceramics
- tension line
- sensor according
- line current
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Abstract
The present utility model relates to a current sensor for a high voltage line. The current sensor for the high voltage line comprises a hollow insulation ceramic member and a pedestal, an opening is arranged on the lower end of the insulation ceramic member, the lower end opening of the insulation ceramic member is sealingly connected with the pedestal, thus a sealing cavity is formed by the insulation ceramic member and the pedestal, a groove is arranged on the upper surface of the insulation ceramic member, an inductor is arranged inside the sealing cavity, the inductor comprises a metal shielding shell body and an induction coil, the induction coil is arranged inside the metal shielding shell body, an axis of the induction coil is vertical with the groove of the upper surface of the insulation ceramic member, two ends of the induction coil and a leading-out wire of the metal shielding shell body are led out from a wire-outgoing through hole of the pedestal; the metal shielding shell body comprises an inner shell body and an outer shell body, the outer shell body is a stainless steel shell body, and the inner shell body is a copper shell body. The current sensor for the high voltage line is simple in structure, low in costs and good in reliability.
Description
Technical field:
The utility model relates to a kind of current sensor, particularly a kind of high-tension line current sensor.
Background technology:
At present, the current measuring device of high-tension line mainly contains induction current transformer, and mainly there is following problem in induction current transformer:
1., be coupled by iron core between conventional induction transformer high voltage side and the secondary side, insulation system between them is complicated, its cost is the exponential relationship rising with the increase of electric pressure, and therefore, high-tension line raises with electric pressure with the current sensor cost to be increased to some extent.
2., conventional induction mutual inductor needs oil-filled and resin-cast, the inflammable and explosive danger of so easy generation, and can make the volume of mutual inductor large, Heavy Weight.
3., the installation of conventional induction mutual inductor need to disconnect high-tension line, increased the line fault point.
The utility model content:
The technical problems to be solved in the utility model is: not enough for prior art, provide a kind of simple in structure, cost is low, the high-tension line current sensor of good reliability.
The technical solution of the utility model:
A kind of high-tension line current sensor, contain hollow insulating ceramics spare and base, the lower end of insulating ceramics spare is provided with opening, lower ending opening place and the base seal of insulating ceramics spare link together, thereby make insulating ceramics spare and base surround a closed cavity, the upper surface of insulating ceramics spare is provided with a groove, an inductor is installed in the closed cavity, inductor contains metal screen case and inductive coil, inductive coil is arranged in metal screen case, the axis of inductive coil is vertical with groove on the insulating ceramics spare upper surface, and the two ends of inductive coil and the extension line of metal screen case going out the line three-way hole from base draw.
The center of inductive coil is provided with a columnar iron core.
The material of columnar iron core is ferrite.
Metal screen case contains inside and outside two-layer housing, and outer casing is Stainless Steel Shell, and internal layer shell is copper shell.
Inductor is positioned at the top of closed cavity.
Be full of the mucilage binding agent of insulation in the closed cavity, inductor is encapsulated in the closed cavity by the mucilage binding agent.
Base is hollow shell uncovered above, go out on the side that line three-way hole is arranged on hollow shell, go out to be equipped with in the line three-way hole cable splice, are connected extension line and are connected in the side that cable splice is positioned at hollow shell and the two ends of inductive coil with metal screen case, cable splice is positioned at the outer side joint shielded cable of hollow shell, and the lower end of insulating ceramics spare is encapsulated in the hollow shell by the mucilage binding agent.
The material of hollow shell is metal.
The profile of insulating ceramics spare is turriform, and the profile of base is truncated cone-shaped.
When using this high-tension line to use current sensor; a measured wire can be fixed in the groove on the insulating ceramics spare upper surface; ac current signal in wire will make and produce into the voltage signal that is directly proportional with ac current signal in the inductor; this voltage signal can be used for the current measurement of load measure, relay protection or reactive power compensator; it is output as low voltage signal; can not produce because output disconnects the high pressure that forms, eliminate Danger Electric shock risk.
The beneficial effects of the utility model:
1. the utility model places the higher insulating ceramics spare of insulativity with inductor, detect the ac current signal in the wire one time by the inductive coil in the inductor, the utility model not only simple in structure, cost is low, and since not because of oil-filled and resin-cast produce inflammable and explosive wait dangerous, its good insulating, reliability height.
2. therefore the utility model has eliminated the magnetic saturation phenomenon owing to do not adopt iron core to do magnetic coupling, and transient response and the stability of operating sensor are improved.
3. the voltage-resistent characteristic of insulating ceramics spare of the present utility model is good, sturdy and durable, and whole sensor does not have movable part, therefore can bear continuously large electric current, transient state and switching surge.The utility model does not need to disconnect high-tension line when installing, and easy construction can be installed at any time, and the installation site is flexible, volume is little, save the space, has reduced installation cost.
Description of drawings:
Fig. 1 is the structural representation that high-tension line is used current sensor;
Fig. 2 is the plan structure synoptic diagram of Fig. 1;
Fig. 3 is the sectional structure synoptic diagram that high-tension line is used current sensor;
Fig. 4 is the structure for amplifying synoptic diagram of inductor.
Embodiment:
Referring to Fig. 1～Fig. 4, among the figure, high-tension line contains hollow insulating ceramics spare 1 and base 2 with current sensor, the lower end of insulating ceramics spare 1 is provided with opening, lower ending opening place and the base 2 of insulating ceramics spare 1 are sealed connected together, thereby make insulating ceramics spare 1 and base 2 surround a closed cavity 7, the upper surface of insulating ceramics spare 1 is provided with a groove 3, an inductor is installed in the closed cavity 7, inductor contains metal screen case 10 and inductive coil 8, inductive coil 8 is arranged in metal screen case 10, the axis of inductive coil 8 is vertical with groove 3 on insulating ceramics spare 1 upper surface, and extension line the going out the line three-way hole from base 2 of the two ends of inductive coil 8 and metal screen case 10 draws.
The center of inductive coil 8 is provided with a columnar iron core 9.
The material of columnar iron core 9 is ferrite.
Metal screen case 10 contains inside and outside two-layer housing, and outer casing 10-1 is Stainless Steel Shell, and internal layer shell 10-2 is copper shell.
Inductor is positioned at the top of closed cavity 7.
Be full of the mucilage binding agent of insulation in the closed cavity 7, inductor is encapsulated in the closed cavity 7 by the mucilage binding agent.
Base 2 is hollow shell uncovered above, go out on the side that line three-way hole is arranged on hollow shell, go out to be equipped with in the line three-way hole cable splice 6, the side that cable splice 6 is positioned at hollow shell is connected with the extension line of being connected with metal screen case in the two ends of inductive coil 8, cable splice 6 is positioned at the outer side joint shielded cable 5 of hollow shell, and the lower end of insulating ceramics spare 1 is encapsulated in the hollow shell by mucilage binding agent 11.
The material of hollow shell is metal.
The profile of insulating ceramics spare 1 is turriform, and the profile of base 2 is truncated cone-shaped.
When using this high-tension line to use current sensor; a measured wire 4 can be fixed in the groove 3 on insulating ceramics spare 1 upper surface; ac current signal in wire 4 will make and produce into the voltage signal that is directly proportional with ac current signal in the inductor; this voltage signal can be used for the current measurement of load measure, relay protection or reactive power compensator; it is output as low voltage signal; can not produce because output disconnects the high pressure that forms, eliminate Danger Electric shock risk.It is on 10kV, 20kV, the 35kV electric line that this high-tension line is mainly used in electric pressure with current sensor.
Claims (9)
1. high-tension line current sensor, it is characterized in that: contain hollow insulating ceramics spare and base, the lower end of insulating ceramics spare is provided with opening, lower ending opening place and the base seal of insulating ceramics spare link together, thereby make insulating ceramics spare and base surround a closed cavity, the upper surface of insulating ceramics spare is provided with a groove, an inductor is installed in the closed cavity, inductor contains metal screen case and inductive coil, inductive coil is arranged in metal screen case, the axis of inductive coil is vertical with groove on the insulating ceramics spare upper surface, and the two ends of inductive coil and the extension line of metal screen case going out the line three-way hole from base draw.
2. high-tension line current sensor according to claim 1, it is characterized in that: the center of described inductive coil is provided with a columnar iron core.
3. high-tension line current sensor according to claim 2, it is characterized in that: the material of described columnar iron core is ferrite.
4. high-tension line current sensor according to claim 1, it is characterized in that: described metal screen case contains inside and outside two-layer housing, and outer casing is Stainless Steel Shell, and internal layer shell is copper shell.
5. high-tension line current sensor according to claim 1, it is characterized in that: described inductor is positioned at the top of closed cavity.
6. high-tension line current sensor according to claim 1 or 5, it is characterized in that: be full of the mucilage binding agent of insulation in the described closed cavity, inductor is encapsulated in the closed cavity by the mucilage binding agent.
7. high-tension line current sensor according to claim 1, it is characterized in that: described base is hollow shell uncovered above, go out on the side that line three-way hole is arranged on hollow shell, go out to be equipped with in the line three-way hole cable splice, are connected extension line and are connected in the side that cable splice is positioned at hollow shell and the two ends of inductive coil with metal screen case, cable splice is positioned at the outer side joint shielded cable of hollow shell, and the lower end of insulating ceramics spare is encapsulated in the hollow shell by the mucilage binding agent.
8. high-tension line current sensor according to claim 7, it is characterized in that: the material of described hollow shell is metal.
9. high-tension line current sensor according to claim 1, it is characterized in that: the profile of described insulating ceramics spare is turriform, the profile of base is truncated cone-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442517 CN202815060U (en) | 2012-09-03 | 2012-09-03 | Current sensor for high voltage line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442517 CN202815060U (en) | 2012-09-03 | 2012-09-03 | Current sensor for high voltage line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815060U true CN202815060U (en) | 2013-03-20 |
Family
ID=47873918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220442517 Expired - Fee Related CN202815060U (en) | 2012-09-03 | 2012-09-03 | Current sensor for high voltage line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815060U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866281A (en) * | 2012-09-03 | 2013-01-09 | 河南新月实业有限公司 | Current sensor for high-voltage line |
| CN103336160A (en) * | 2013-06-03 | 2013-10-02 | 国家电网公司 | Full shielding high voltage current measuring device |
-
2012
- 2012-09-03 CN CN 201220442517 patent/CN202815060U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866281A (en) * | 2012-09-03 | 2013-01-09 | 河南新月实业有限公司 | Current sensor for high-voltage line |
| CN103336160A (en) * | 2013-06-03 | 2013-10-02 | 国家电网公司 | Full shielding high voltage current measuring device |
| CN103336160B (en) * | 2013-06-03 | 2017-05-24 | 国家电网公司 | full shielding high voltage current measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170502 Address after: 450000 Henan province Zhengzhou guanchengou Wenzhi road 18 block A No. 7 Patentee after: Henan State Grid Power Co., Ltd. Address before: Zhengzhou City, Henan province 450000 City Guancheng Hui District Road No. 182 Building 1, unit 4, No. 65 Patentee before: Henan Xinyue Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20180903 |