CN216646705U - Insulating cover for 500kV lightning arrester test - Google Patents
Insulating cover for 500kV lightning arrester test Download PDFInfo
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- CN216646705U CN216646705U CN202122882262.3U CN202122882262U CN216646705U CN 216646705 U CN216646705 U CN 216646705U CN 202122882262 U CN202122882262 U CN 202122882262U CN 216646705 U CN216646705 U CN 216646705U
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Abstract
The utility model relates to an insulating cover for a 500kV lightning arrester test, which comprises a left cover body and a right cover body, wherein the left cover body and the right cover body are soft insulating covers, a hook-and-loop fastener surface covers the outer side of the left cover body, and a hook-and-loop fastener surface covers the inner side of the right cover body; the left cover body and the right cover body are adhered through the hook-and-loop fastener and the hook-and-loop fastener to form an insulating cover for the test of the whole cylindrical 500kV lightning arrester, and the insulating cover for the test of the 500kV lightning arrester can be fixed at the neck position of the lightning arrester to shield space charge coupling between adjacent lightning arresters and a surrounding strong electric field. According to the utility model, in the test process of the direct-current reference voltage and the leakage current of the lightning arrester, the drainage wire is not required to be removed, the electric field of the lightning arrester is balanced, the insulation strength from the lightning arrester to the grading ring is also enhanced, the influence of the grading ring structure and the surrounding stray current is eliminated, and the test data is more real and reliable.
Description
Technical Field
The utility model relates to the technical field of lightning arrester testing, in particular to an insulating cover for a 500kV lightning arrester test.
Background
With the construction of ultra-high voltage and ultra-high voltage transmission projects in China, transformer stations, converter stations and the like have wide requirements on ultra-high voltage and high-voltage lightning arresters in recent years. It is known that an arrester is a very important protection device in power equipment, especially in the process of power transmission, no matter operation overvoltage or lightning overvoltage is limited by the arrester directly or indirectly connected to the protected equipment, and the protection characteristic of the arrester directly influences the selection of the impulse insulation level and the air gap distance of substation equipment, and is the basis of the insulation matching of a substation. The lightning arrester is generally a metal oxide lightning arrester, and when the lightning arrester is used and needs to bear operation voltage for a long time, the internal resistance card can have continuous current to pass through, and meanwhile, when the metal oxide lightning arrester is subjected to lightning overvoltage or is instantly conducted through operation overvoltage, the metal oxide lightning arrester also can bear extremely large short-circuit current and easily causes the resistance card to age. Therefore, the lightning arrester needs to be tested for the direct current reference voltage and the leakage current every certain time.
In the traditional lightning arrester direct current reference voltage and leakage current test process, due to the interference of space charge coupling between adjacent lightning arresters and surrounding strong electric fields and the influence of a grading ring structure and surrounding stray current, the accuracy of the lightning arrester direct current reference voltage and leakage current test cannot be ensured.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an insulating cover for a 500kV lightning arrester test.
The technical scheme adopted by the utility model is as follows:
the insulating cover for the 500kV lightning arrester test comprises a left cover body and a right cover body, wherein the left cover body and the right cover body are soft insulating covers, a hook-and-loop fastener surface covers the outer side of the left cover body, and a hook-and-loop fastener surface covers the inner side of the right cover body; the left cover body and the right cover body are adhered through the hook-and-loop fastener and the hook-and-loop fastener to form an insulating cover for the test of the whole cylindrical 500kV lightning arrester, and the insulating cover for the test of the 500kV lightning arrester can be fixed at the neck position of the lightning arrester to shield space charge coupling between adjacent lightning arresters and a surrounding strong electric field.
Further, arc-shaped guide edges extending inwards are formed at the top and the bottom of the left cover body and the right cover body; after the left cover body and the right cover body are bonded, the arc-shaped guide edges at the top and the bottom of the left cover body and the right cover body form an upper porcelain bottle buckle and a lower porcelain bottle buckle.
Furthermore, this insulating boot for 500kV arrester test still includes the binding post that passes the left cover body or the right cover body, the one end that binding post inserted the cover body inside is interior detection line link, and its one end that exposes in the cover body outside is the quick jack of outside detection line.
The beneficial effects of the utility model are:
the novel anti-drop rubber mat for the 500kV spacer has the advantages that the drainage wire does not need to be removed in the testing process of the direct-current reference voltage and the leakage current of the lightning arrester, so that the working risk is reduced, and the working efficiency is improved; this novel cushion of 500kV conductor spacer anti-drop has also strengthened the dielectric strength of arrester to equalizer ring in the electric field of having equalized the arrester, has got rid of equalizer ring structure and stray current's influence on every side, and test data is truer reliable. This novel cushion of 500kV conductor spacer anti-drop simple to operate, and firm reliable saves a large amount of time in arrester direct current reference voltage and leakage current test process.
Drawings
FIG. 1 is a schematic view of the installation location of the present invention;
FIGS. 2 and 3 are schematic views of the split structure of the present invention;
in fig. 1-3, 1-500 kV lightning arrester is insulating boot for experiment, 2-left cover body, 3-right cover body, 4-magic tape hook face, 5-magic tape matt face, 6-upper porcelain insulator buckle, 7-lower porcelain insulator buckle, 8-binding post, 9-internal detection line connecting end, 10-external detection line fast jack, 11-lightning arrester.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
1-3, the utility model is an insulating cover for a 500kV lightning arrester test, and the insulating cover 1 for the 500kV lightning arrester test comprises a left cover body 2 and a right cover body 3;
specifically, the left cover body 2 and the right cover body 3 are both soft insulating covers, a hook and loop fastener face 4 covers the outer side of the left cover body 2, and a hook and loop fastener hair face 5 covers the inner side of the right cover body 3; the left cover body 2 and the right cover body 3 are adhered through the hook-and-loop fastener 4 and the hook-and-loop fastener 5 to form the insulating cover 1 for the whole cylindrical 500kV lightning arrester test, and the insulating cover 1 for the 500kV lightning arrester test can be fixed at the neck position of the lightning arrester 11 to shield space charge coupling and surrounding strong electric fields between the adjacent lightning arresters 11.
Further, arc-shaped guide edges extending inwards are formed at the top and the bottom of the left cover body 2 and the right cover body 3; after the left cover body 2 and the right cover body 3 are bonded, an upper porcelain bottle buckle 6 and a lower porcelain bottle buckle 7 are formed on the arc-shaped guide edges at the top and the bottom of the left cover body.
During the installation, through covering the left cover body 2 and the right cover body 3 on 500kV arrester 11, utilize the top of the left cover body 2 and the right cover body 3 and the circular arc leading edge card of the inside extension that the bottom formed in 11 neck groove positions of arrester, then paste hook face 4 and 5 bonds of magic tape matt surface with the left cover body 2 and the right cover body 3 through the magic and can install and finish. Because the left cover body 2 and the right cover body 3 are soft insulating covers, space charge coupling between adjacent lightning arresters 11 and interference of surrounding strong electric fields can be avoided, and accuracy of testing direct-current reference voltage and leakage current of the lightning arresters is guaranteed; meanwhile, the insulating cover 1 for the 500kV lightning arrester test is arranged at the groove position of the neck of the lightning arrester 11, so that the drainage wire does not need to be detached in the testing process of the direct-current reference voltage and the leakage current of the lightning arrester, the working risk is reduced, and the working efficiency is improved.
In another embodiment of the utility model, as shown in fig. 1 and 3, the insulating cover 1 for testing a 500kV lightning arrester further comprises a connection terminal 8 penetrating through the left cover body 2 or the right cover body 3, wherein one end of the connection terminal 8 inserted into the cover body is an internal test wire connection end 9, and one end of the connection terminal exposed outside the cover body is an external test wire quick insertion hole 10.
Make in the lightning arrester direct current reference voltage and the leakage current test process wiring more convenient through addding binding post 8, on the concrete inside detection line link 9 that is located the cover body with binding post 8 inserts the lightning arrester 11 poles, be connected lightning arrester direct current reference voltage and leakage current test with the quick jack 10 of outside detection line that binding post 8 is located the cover body outside simultaneously with voltage leakage current test instrument.
Claims (3)
1. The utility model provides an experimental insulating boot that uses of 500kV arrester which characterized in that: the insulating cover for the 500kV lightning arrester test comprises a left cover body and a right cover body, wherein the left cover body and the right cover body are soft insulating covers, a magic tape hook surface covers the outer side of the left cover body, and a magic tape hair surface covers the inner side of the right cover body; the left cover body and the right cover body are adhered through the hook-and-loop fastener and the hook-and-loop fastener to form the insulating cover for the whole cylindrical 500kV lightning arrester test, and the insulating cover for the 500kV lightning arrester test can be fixed at the neck position of the lightning arrester to shield space charge coupling and surrounding strong electric fields between adjacent lightning arresters.
2. The insulating cover for the 500kV lightning arrester test of claim 1, characterized in that: the top and the bottom of the left cover body and the right cover body are provided with arc-shaped guide edges extending inwards; after the left cover body and the right cover body are bonded, the arc-shaped guide edges at the top and the bottom of the left cover body and the right cover body form an upper porcelain bottle buckle and a lower porcelain bottle buckle.
3. The insulating cover for testing the 500kV lightning arrester according to claim 1, characterized in that: this insulating boot is used in 500kV arrester test still includes the binding post that passes the left side cover body or the right side cover body, the one end that binding post inserted the cover body inside is inside detection line link, and it exposes in the quick jack of cover body outside one end for outside detection line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122882262.3U CN216646705U (en) | 2021-11-23 | 2021-11-23 | Insulating cover for 500kV lightning arrester test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122882262.3U CN216646705U (en) | 2021-11-23 | 2021-11-23 | Insulating cover for 500kV lightning arrester test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216646705U true CN216646705U (en) | 2022-05-31 |
Family
ID=81734736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122882262.3U Active CN216646705U (en) | 2021-11-23 | 2021-11-23 | Insulating cover for 500kV lightning arrester test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216646705U (en) |
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2021
- 2021-11-23 CN CN202122882262.3U patent/CN216646705U/en active Active
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