CN201413879Y - Special leading wire for test of lightning arrester of power transmission cable pole tower - Google Patents
Special leading wire for test of lightning arrester of power transmission cable pole tower Download PDFInfo
- Publication number
- CN201413879Y CN201413879Y CN2009200208678U CN200920020867U CN201413879Y CN 201413879 Y CN201413879 Y CN 201413879Y CN 2009200208678 U CN2009200208678 U CN 2009200208678U CN 200920020867 U CN200920020867 U CN 200920020867U CN 201413879 Y CN201413879 Y CN 201413879Y
- Authority
- CN
- China
- Prior art keywords
- test
- conductor
- lightning arrester
- copper mesh
- leading wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 title claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 21
- 239000011241 protective layer Substances 0.000 claims abstract description 10
- 230000004888 barrier function Effects 0.000 claims description 10
- 239000010410 layer Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 230000001133 acceleration Effects 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Abstract
The utility model relates to a connector used for the test of electric equipment in an electric system, in particular to a special leading wire for the test of a lightning arrester of a power transmission cable pole tower. The special leading wire comprises a leading wire conductor, and an insulating layer sufficient to withstand the test voltage intensity is covered on the outside of the leadingwire conductor, a copper mesh shielding layer is wound on the outside of the insulating layer, a protective layer is covered on the outside of the copper mesh shielding layer, and a heat shrinkage bush is respectively arranged on the outer side of the protective layer at both ends. One end of the leading wire is connected with a clamp, the other end is connected with a conductor plug, and the heatshrinkage bush shielding layer of the other side of the conductor plug is connected with a lead-out plug of the heat shrinkage bush shielding layer. The utility model has the advantages of simple structure, safety, reliability, convenient connection, test speed acceleration, power cut time reduction, labor saving, material saving and great improvement of the work safety of operators.
Description
Technical field:
The utility model relates to the jockey of using in the power equipment test in a kind of electric power system, especially a kind of power transmission cable shaft tower lightning arrester test dedicated pin.
Background technology:
The transmission line lightning arrester is avoided the important device that lightning overvoltage and switching overvoltage are damaged as a kind of protection circuit, cable, and its safety problem is more and more paid close attention to.The cable lightning arrester is connected by aluminium row with cable terminal, circuit drainage thread, and is in parallel with cable line.During normal operation, not conducting of lightning arrester (only flowing through the leakage current of microampere order), when the overvoltage on acting on lightning arrester reached its operation voltage, the lightning arrester conducting by big electric current, discharged the overvoltage energy, and with overvoltage Limiting at certain level.After discharging the overvoltage energy, lightning arrester returns to previous status, thereby has guaranteed that cable line is not subjected to superpotential damage.
For guaranteeing that lightning arrester can safe operation, normally bring into play the effect of its conducting failure electric current, all can make a plan every year lightning arrester is carried out checking experiment work, accomplish investigation early, early handle.Because the current power transmission lightning arrester mostly is installed in tens meters above the shaft tower, the transmission of electricity lightning arrester is carried out checking experiment work before, two kinds of maintenance ways have been experienced substantially, a kind of way is that lightning arrester is unloaded from shaft tower, land laggard line correlation experiment work, again lightning arrester is reinstalled shaft tower after the pass the test, this work way is not only time-consuming but also require great effort, and the long-term work high above the ground of staff, there are bigger hazards, equipment the phenomenon of colliding with may occur through dismounting, transmission up and down, installation again, stays potential safety hazard for following operation; Another kind of way is that lightning arrester is unloaded from shaft tower, then will be already the lightning arrester of pass the test return and install on the shaft tower, can save the part interruption duration like this, but hazards and potential safety hazard in dismounting, the installation process still exist, in addition, owing to will keep standby redundancy constantly, not only caused the wasting of resources, and give to deposit and brought difficulty, expense is higher.These two kinds of maintenance ways all need long interruption duration, use great amount of manpower and material resources, are easy to the maintainer is damaged, and are dangerous.
The utility model content:
The utility model provides a kind of power transmission cable shaft tower lightning arrester test dedicated pin, it is simple in structure, safe and reliable, easy to connect, accelerate the speed of test, reduced the time that has a power failure, saved manpower and materials, improve operating personnel's job security greatly, solved problems of the prior art.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be: it comprises leading-in conductor, be coated with the insulating barrier of enough resistance test voltage strengths in the outside of leading-in conductor, outer felt at insulating barrier is wound with the copper mesh screen, the outside of copper mesh screen is coated with protective layer, is respectively equipped with a heat-shrinkable T bush in the protective layer outside at two ends; One end of leading-in conductor links to each other with anchor clamps, and the other end links to each other with conductor plug, and the copper mesh screen of conductor plug one side is drawn plug with the copper mesh screen and linked to each other.
The utility model is simple in structure; safe and reliable; easy to connect; employing is coated with the insulating barrier of enough resistance test voltage strengths from inside to outside successively in the outside of leading-in conductor; copper mesh screen and protective layer; one end of leading-in conductor links to each other with anchor clamps; the other end links to each other with conductor plug; the copper mesh screen of conductor plug one side is drawn plug with the copper mesh screen and is linked to each other; during operation; directly anchor clamps are sandwiched on the tested lightning arrester high-voltage connection terminal; then the copper mesh screen being drawn plug inserts in the socket on the high pressure gauge shell of test apparatus; conductor plug is inserted in the socket of high pressure gauge outfit unsteady flow coil output of test apparatus; and the dedicated pin segmentation is fixed on the firm parts of shaft tower, can test.Connection is simple and convenient, safe and reliable like this, meets the nation's security regulation, has accelerated the speed of test greatly, has reduced interruption duration, has improved operating personnel's job security, more safety guarantee is provided for maintainer and equipment.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A portion enlarged drawing among Fig. 1.
Fig. 3 is the B portion enlarged drawing among Fig. 2.
Among the figure, 1, protective layer; 2, leading-in conductor; 3, anchor clamps; 4, copper mesh screen; 5, insulating barrier; 6, conductor plug; 7, the copper mesh screen is drawn plug; 8, heat-shrinkable T bush.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
Shown in Fig. 1～3, the utility model comprises leading-in conductor 2, be coated with the insulating barrier 5 of enough resistance test voltage strengths in the outside of leading-in conductor 2, outer felt at insulating barrier 5 is wound with copper mesh screen 4, the outside of copper mesh screen 4 is coated with protective layer 1, is respectively equipped with a heat-shrinkable T bush 8 in protective layer 1 outside at two ends; One end of leading-in conductor 2 links to each other with anchor clamps 3, and the other end links to each other with conductor plug 6, and the copper mesh screen 4 of conductor plug 6 one sides is drawn plug 7 with the copper mesh screen and linked to each other.
Insulating barrier 5 only can resistance test required voltage intensity, can solve lead-in wire and touching the drawback that discharge breakdown just takes place other objects.Breakdown strength in view of the withstand voltage level of this test lead insulating material is subjected to the influence of physical dimensions such as conductor radius bigger, so the insulation thickness of insulating barrier 5 generally adopts the average field-strength formula to calculate, the following formula of the selection of insulation thickness:
Under test voltage, insulation thickness is
In the formula:
U
0Lead design voltage (being test voltage);
The test voltage breakdown strength of G insulating material, KV/mm;
k
1The temperature coefficient of power frequency and impulse breakdown intensity is for this test lead, k
1=1.1;
k
2Aging coefficient under the test voltage is for this test lead, k
2=4;
k
2The coefficient of safety that the uncertainty influence is introduced under the test voltage generally all gets 1.1.
From top formula as can be seen, the crosslinked polyetylene insulated thickness that needs only lead-in wire is greater than the Δ value in theory, and when adding experimental voltage U, insulation just can not be breakdown, and experiment provides possibility to the lightning arrester on the shaft tower for this.Promptly this dedicated pin insulation thickness should be not less than following numerical value,
Chosen than after the suitable insulation thickness,,, also the disruptive discharge problem can not take place even therefore its exocuticle touches other objects because lead-in wire itself has just had enough voltage tolerance levels.The experiment lead-in wire just can be fixed on fully and upwards be connected to lightning arrester on the shaft tower like this, does not worry that lead-in wire because touching the ground connection shaft tower disruptive discharge takes place, and high-altitude wind, flying bird etc. also can be ignored substantially to the influence of experiment; Simultaneously, because the use of outer layer insulation material, the electric field strength around the lead-in wire also reduces greatly, and the staff also can easier keep a safe distance the danger when having reduced work high above the ground with the experiment lead-in wire.In addition because lead-in wire is fixing upwards by shaft tower, so strengthened the reliability of its connection, the possibility that can exist experimental session to fall not, really ensured experimental work safe, quick, reliably carry out.
The checking experiment process: before the use, the correct Work tool safe in utilization of maintainer checks conscientiously whether dedicated pin device connecting line connects well.During use, the maintainer directly is sandwiched in anchor clamps 3 on the tested lightning arrester high-voltage connection terminal, then the copper mesh screen being drawn plug 7 inserts in the socket on the high pressure gauge shell of test apparatuses, conductor plug 6 is inserted in the socket of high pressure gauge outfit unsteady flow coil output of test apparatuses, and the dedicated pin segmentation is fixed on the firm parts of shaft tower, can test.Operation meets the nation's security regulation like this, and is both simple, safe and reliable again.
The utility model does not describe part in detail, is those skilled in the art of the present technique's known technology.
Claims (1)
1, a kind of power transmission cable shaft tower lightning arrester test dedicated pin, it is characterized in that: comprise leading-in conductor, be coated with the insulating barrier of enough resistance test voltage strengths in the outside of leading-in conductor, outer felt at insulating barrier is wound with the copper mesh screen, the outside of copper mesh screen is coated with protective layer, is respectively equipped with a heat-shrinkable T bush in the protective layer outside at two ends; One end of leading-in conductor links to each other with anchor clamps, and the other end links to each other with conductor plug, and the copper mesh screen of conductor plug one side is drawn plug with the copper mesh screen and linked to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200208678U CN201413879Y (en) | 2009-04-14 | 2009-04-14 | Special leading wire for test of lightning arrester of power transmission cable pole tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200208678U CN201413879Y (en) | 2009-04-14 | 2009-04-14 | Special leading wire for test of lightning arrester of power transmission cable pole tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201413879Y true CN201413879Y (en) | 2010-02-24 |
Family
ID=41715760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200208678U Expired - Fee Related CN201413879Y (en) | 2009-04-14 | 2009-04-14 | Special leading wire for test of lightning arrester of power transmission cable pole tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201413879Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022753A (en) * | 2012-11-27 | 2013-04-03 | 沧州供电公司 | High-voltage discharge lever |
| CN103293413A (en) * | 2013-05-19 | 2013-09-11 | 国家电网公司 | Special high-voltage testing device for transformers |
| CN104362485A (en) * | 2014-10-31 | 2015-02-18 | 国家电网公司 | Special lead for test on lightning arrester of power transmission cable tower |
| CN108631222A (en) * | 2018-03-19 | 2018-10-09 | 柳州钢铁股份有限公司 | Zinc-Oxide Arrester lead cracking restorative procedure |
-
2009
- 2009-04-14 CN CN2009200208678U patent/CN201413879Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022753A (en) * | 2012-11-27 | 2013-04-03 | 沧州供电公司 | High-voltage discharge lever |
| CN103022753B (en) * | 2012-11-27 | 2015-10-28 | 国家电网公司 | A kind of high-voltage discharge lever |
| CN103293413A (en) * | 2013-05-19 | 2013-09-11 | 国家电网公司 | Special high-voltage testing device for transformers |
| CN104362485A (en) * | 2014-10-31 | 2015-02-18 | 国家电网公司 | Special lead for test on lightning arrester of power transmission cable tower |
| CN108631222A (en) * | 2018-03-19 | 2018-10-09 | 柳州钢铁股份有限公司 | Zinc-Oxide Arrester lead cracking restorative procedure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20121018 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121018 Address after: 250012 Shandong Province, Lixia District of Ji'nan City Luoyuan Street No. 238 Patentee after: Jinan Power Supply Co., Ltd. of Shandong Electric Power Corporation Patentee after: State Grid Corporation of China Address before: 250012 Shandong Province, Lixia District of Ji'nan City Luoyuan Street No. 238 Patentee before: Jinan Power Supply Co., Ltd. of Shandong Electric Power Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20160414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |