CN203445579U - Lightning protection device for cable terminal - Google Patents

Lightning protection device for cable terminal Download PDF

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Publication number
CN203445579U
CN203445579U CN201320724805.1U CN201320724805U CN203445579U CN 203445579 U CN203445579 U CN 203445579U CN 201320724805 U CN201320724805 U CN 201320724805U CN 203445579 U CN203445579 U CN 203445579U
Authority
CN
China
Prior art keywords
lightning arrester
copper
cable termination
arrester
copper conductor
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
Application number
CN201320724805.1U
Other languages
Chinese (zh)
Inventor
艾福超
兰先明
徐鹏
张鹏
张小龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Power Supply Co of State Grid Shandong Electric Power Co
Original Assignee
Qingdao Power Supply Co of State Grid Shandong Electric Power Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Power Supply Co of State Grid Shandong Electric Power Co filed Critical Qingdao Power Supply Co of State Grid Shandong Electric Power Co
Priority to CN201320724805.1U priority Critical patent/CN203445579U/en
Application granted granted Critical
Publication of CN203445579U publication Critical patent/CN203445579U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a lightning protection device for a cable terminal. The lightning protection device for the cable terminal comprises an arrester. The arrester is fixed on a holder. A ground terminal of the arrester is connected to a ground wire of a tower. A leading end of the arrester is connected to a copper conductor. The copper conductor is connected to an overhead line via a copper aluminum transition pressing plate. The cable terminal is connected onto the overhead line. The copper is good in oxidation resistance, hard to oxidize, high in mechanical strength, high in reliability and good in safety performance, and is not broken due to high current generated by lightning stoke. However, the overhead line is a steel-cored aluminum strand wire, and due to different material, cannot be directly connected to the copper wire. Therefore, by connection of the copper conductor with the overhead line via the copper aluminum transition pressing plate, the connection problem after replacement of the copper conductor is solved and the safety performance is greatly improved.

Description

A kind of cable termination lightning arrester
Technical field
The utility model relates to a kind of cable termination lightning arrester.Belong to technical field of power systems.
Background technology
In recent years, along with the extensive use of high voltage power cable, the quantity of cable termination shaft tower also increases thereupon.According to service requirement, lightning arrester should be installed in the joint portion of cable termination and overhead wire, to prevent that the main insulation of cable and annex from damaged by overvoltage.Arrester ground should meet designing requirement, down conductor fixation, and the connection of lead-in wire should not make arrangement terminal be subject to surpassing the holding capacity allowing.
The arrester device of the cable termination of the 35kV of operation~11kV protection now has suspension type and two kinds of seat formulas; from actual motion; on the connection of suspension mounting arrester ground end and seat formula device lightning arrester, the connection of lead end exists serious potential safety hazard; easily rupture in junction; make cable termination can not get the protection of lightning arrester, the faults such as ground connection, short circuit easily occur.
In prior art, arrester ground lead-in wire, for copper braiding flexible cord, because material is softer, is shaped as pancake, wind area is large, and length is wayward etc., causes lead-in wire often swung back and forth by wind, rub back and forth with lightning arrester coupling part, and the reason such as corroded and cause often fracture of lead-in wire.Make cable termination lose lightning protection, the lead-in wire of fracture also can cause line-to-ground or short trouble, has a strong impact on the safe and stable operation of circuit.And this type of defect processing is cumbersome, after must having a power failure, just can recover, unfavorable to the safe operation of electrical network.
Lightning arrester lead-in wire refers to the connecting line between lightning arrester leading-in end and overhead wire downlead (station track), it is built on stilts that to draw lower wire material be steel reinforced aluminium conductor, in prior art, the leading-in end connecting line of lightning arrester is used aluminum steel, because but aluminium aluminum steel is easily oxidized, strength decreased, when the thunder-strike current by larger, easily rupture, cause dangerous accident.
Utility model content
For this reason, technical problem to be solved in the utility model is that in prior art, arrester ground lead-in wire is copper braiding flexible cord, and material is softer, easily fracture; When the leading-in end connecting line of lightning arrester is aluminum steel, easily oxidized, when the thunder-strike current by larger, easily rupture, thereby propose a kind of cable termination arrester device.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of cable termination lightning arrester, comprise lightning arrester, described lightning arrester is fixed on support, described arrester ground end is connected with tower grounding line, the leading-in end of described lightning arrester is connected with copper conductor, described copper conductor is connected with overhead wire by copper-aluminium transition pressing plate, on described overhead wire, is connected with cable termination.
The metallic plate that described copper-aluminium transition pressing plate is aluminium for Wei Tong, one end, one end of being passed through thermal weld by aluminium sheet and copper coin and forming.
The copper coin end of described copper-aluminium transition pressing plate is connected with described copper conductor, and the aluminium sheet end of described copper to aluminum adapter bar is connected with overhead wire.
Described copper conductor one end is provided with binding post, and described binding post is connected with the leading-in end of described lightning arrester.
The earth terminal of described lightning arrester is connected with tower grounding line by the polyethylene insulated aerial line of 10kV.
Described lightning arrester is suspended on described support.
Described lightning arrester is fixed on the supporting traverse of installing cables terminal, and described supporting traverse is horizontally fixed on shaft tower.
Described cable termination and described lightning arrester are arranged side by side on described supporting traverse.
The cross-sectional area scope of described copper conductor is 25-100mm 2.
The cross-sectional area of described copper conductor is 50mm 2.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) the utility model provides a kind of cable termination lightning arrester, comprise lightning arrester, described lightning arrester is fixed on support, described arrester ground end is connected with tower grounding line, the leading-in end of described lightning arrester is connected with copper conductor, described copper conductor is connected with overhead wire by copper-aluminium transition pressing plate, on described overhead wire, is connected with cable termination.The non-oxidizability of described copper is strong, is difficult for oxidizedly, and mechanical strength is large, and what in the time of can be because of thunderbolt, produce ruptures compared with the large function of current, and reliability is high, and security performance is good.But, because overhead wire is steel reinforced aluminium conductor, because material is different, can not directly be connected with copper cash, so copper conductor is connected with overhead wire by copper-aluminium transition pressing plate, with regard to having solved the latter linked problem of replacing copper conductor, greatly improved security performance like this.
(2) the utility model provides a kind of cable termination lightning arrester, because overhead wire is steel reinforced aluminium conductor, adopt copper-aluminium transition pressing plate to be connected with the incoming end wiring transition of lightning arrester, the metallic plate that described copper-aluminium transition pressing plate is aluminium for Wei Tong, one end, one end of being formed through thermal weld by aluminium sheet and copper coin, has realized the not directly copper conductor of connection and the safe and reliable connection of overhead wire by copper-aluminium transition pressing plate.
(3) the utility model provides a kind of cable termination lightning arrester, and described copper conductor one end is provided with binding post, more convenient while installing at the scene.
(4) the utility model provides a kind of cable termination lightning arrester, the earth terminal of described lightning arrester is connected with tower grounding line by the polyethylene insulated aerial line of 10kV, wind area is little, be subject to the impact of wind-force little, the polyethylene sheath resistance to corrosion of insulated cable is strong, stable performance, while also effectively having prevented wind and the friction of lightning arrester coupling part.
(5) the utility model provides a kind of cable termination lightning arrester, be divided into suspension type and desk-top two kinds, described lightning arrester can be suspended on support, also described lightning arrester can be arranged on the supporting traverse of installing cables terminal, lightning arrester and cable termination are arranged side by side, these two kinds of set-up modes can be suited measures to local conditions as required, applicable multiple occasion.
(6) the utility model provides a kind of cable termination lightning arrester, and the cross-sectional area scope of described copper conductor is 25-100mm 2, preferred 50mm 2, the non-oxidizability of copper is strong, and intensity can increase like this, can not rupture because of thunder-strike current effect, has improved useful life and performance.
Accompanying drawing explanation
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is a kind of cable termination lightning arrester of an embodiment of the utility model;
Fig. 2 is a kind of cable termination lightning arrester of an embodiment of the utility model.
In figure, Reference numeral is expressed as: the polyethylene insulated aerial line of 1-10kV, 2-support, 3-lightning arrester, 4-copper conductor, 5-cable termination, 6-overhead wire, 7-copper-aluminium transition pressing plate, 8-supporting traverse.
Embodiment
embodiment mono-
The present embodiment provides a kind of cable to keep away suspension type thunder device, as shown in Figure 1, comprise lightning arrester 3, described lightning arrester 3 hangs and is fixed on support 2, described lightning arrester 3 earth terminals are connected with tower grounding line (not shown), the leading-in end of described lightning arrester 3 is connected with copper conductor 4, and described copper conductor 4 is connected with overhead wire 6 by copper-aluminium transition pressing plate 7, on described overhead wire 6, is connected with cable termination 5.Described copper conductor 4 one end are provided with binding post, and described binding post is connected with the leading-in end of described lightning arrester 3.More convenient while installing at the scene.
The metallic plate that described copper-aluminium transition pressing plate 7 is aluminium for Wei Tong, one end, one end of being passed through thermal weld by aluminium sheet and copper coin and forming.Adopt copper-aluminium transition pressing plate 7 to be connected with the incoming end wiring transition of lightning arrester 3, safe and reliable.The copper coin end of described copper-aluminium transition pressing plate 7 is connected with described copper conductor 4, and the aluminium sheet end of described copper to aluminum adapter bar 7 is connected with overhead wire 6.Because overhead wire is steel reinforced aluminium conductor, in prior art, the leading-in end connecting line of lightning arrester is used aluminum steel, but aluminum steel is easily oxidized, and strength decreased easily ruptures when the thunder-strike current by larger, causes dangerous accident.In this programme, by copper conductor, replaced aluminum steel of the prior art, the non-oxidizability of copper is strong, is difficult for oxidizedly, and mechanical strength is large, and what in the time of can be because of thunderbolt, produce ruptures compared with the large function of current, and reliability is high, and security performance is good.But material (the being steel reinforced aluminium conductor) difference due to aluminum conductor and overhead wire, can not directly be connected with copper cash, therefore copper conductor is connected with overhead wire by copper-aluminium transition pressing plate, with regard to having solved the latter linked problem of replacing copper conductor, has greatly improved security performance like this.
As preferential embodiment, the cross-sectional area of described copper conductor 4 is 50mm2, easy fracture not only, and resistance is less, can not produce a large amount of heats while producing thunder-strike current, and security performance is high, and easy fracture not, has improved useful life.
As other embodiment, the copper conductor between the desirable 25-100mm2 of the cross-sectional area of described copper conductor 4.
embodiment bis-
The present embodiment provides a kind of cable termination seat formula lightning arrester, as shown in Figure 2, for desk-top setting, comprise lightning arrester 3, described lightning arrester 3 is fixed on the supporting traverse 8 of installing cables terminal, and described supporting traverse 8 is horizontally fixed on shaft tower, and described supporting traverse 8 is the iron of rectifying, described cable termination 5 is fixed on described supporting traverse 8 by shim, and described lightning arrester 3 is arranged side by side on described supporting traverse 8 with described cable termination 5.Described lightning arrester 3 earth terminals are connected with tower grounding line (not shown), and the leading-in end of described lightning arrester 3 is connected with copper conductor 4, and described copper conductor 4 is connected with overhead wire 6 by copper-aluminium transition pressing plate 7, on described overhead wire 6, is connected with cable termination 5.Described copper conductor 4 one end are provided with binding post, and described binding post is connected with the leading-in end of described lightning arrester 3.More convenient while installing at the scene.
As preferred embodiment, the earth terminal of described lightning arrester is connected with tower grounding line by the polyethylene insulated aerial line 1 of 10kV.Wind area is little, is subject to the impact of wind-force little, and the polyethylene sheath resistance to corrosion of insulated cable is strong, and stable performance, while also effectively having prevented wind and the friction of lightning arrester coupling part.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being extended out thus or change are still among the protection range in the invention.

Claims (10)

1. a cable termination lightning arrester, comprise lightning arrester, described lightning arrester is fixed on support, described arrester ground end is connected with tower grounding line, it is characterized in that: the leading-in end of described lightning arrester is connected with copper conductor, described copper conductor is connected with overhead wire by copper-aluminium transition pressing plate, on described overhead wire, is connected with cable termination.
2. cable termination lightning arrester according to claim 1, is characterized in that: the metallic plate that described copper-aluminium transition pressing plate is aluminium for Wei Tong, one end, one end of being passed through thermal weld by aluminium sheet and copper coin and forming.
3. cable termination lightning arrester according to claim 1, is characterized in that: the copper coin end of described copper-aluminium transition pressing plate is connected with described copper conductor, and the aluminium sheet end of described copper to aluminum adapter bar is connected with overhead wire.
4. cable termination lightning arrester according to claim 1, is characterized in that: described copper conductor one end is provided with binding post, and described binding post is connected with the leading-in end of described lightning arrester.
5. cable termination lightning arrester according to claim 1, is characterized in that: the earth terminal of described lightning arrester is connected with tower grounding line by the polyethylene insulated aerial line of 10kV.
6. cable termination lightning arrester according to claim 1, is characterized in that: described lightning arrester is suspended on described support.
7. cable termination lightning arrester according to claim 1, is characterized in that: described lightning arrester is fixed on the supporting traverse of installing cables terminal, and described supporting traverse is horizontally fixed on shaft tower.
8. cable termination lightning arrester according to claim 7, is characterized in that: described cable termination and described lightning arrester are arranged side by side on described supporting traverse.
9. according to the cable termination lightning arrester described in claim 1 or 2 or 4 or 5, it is characterized in that: the cross-sectional area scope of described copper conductor is 25-100mm 2.
10. cable termination lightning arrester according to claim 9, is characterized in that: the cross-sectional area of described copper conductor is 50mm 2.
CN201320724805.1U 2013-11-15 2013-11-15 Lightning protection device for cable terminal Expired - Fee Related CN203445579U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320724805.1U CN203445579U (en) 2013-11-15 2013-11-15 Lightning protection device for cable terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320724805.1U CN203445579U (en) 2013-11-15 2013-11-15 Lightning protection device for cable terminal

Publications (1)

Publication Number Publication Date
CN203445579U true CN203445579U (en) 2014-02-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103840421A (en) * 2013-11-15 2014-06-04 国网山东省电力公司青岛供电公司 Cable terminal lightning arrester
CN111478267A (en) * 2020-04-28 2020-07-31 国家电网有限公司 Cable dry-type terminal strutting arrangement with unmanned aerial vehicle platform that charges that rises and falls
CN111478266A (en) * 2020-04-28 2020-07-31 国家电网有限公司 High-voltage power tower cable dry-type terminal sitting type supporting device
CN111478265A (en) * 2020-04-28 2020-07-31 国家电网有限公司 Flexible supporting platform for remotely monitoring state of cable terminal
CN111478264A (en) * 2020-04-28 2020-07-31 国家电网有限公司 Rigid supporting platform for remotely monitoring state of cable terminal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103840421A (en) * 2013-11-15 2014-06-04 国网山东省电力公司青岛供电公司 Cable terminal lightning arrester
CN111478267A (en) * 2020-04-28 2020-07-31 国家电网有限公司 Cable dry-type terminal strutting arrangement with unmanned aerial vehicle platform that charges that rises and falls
CN111478266A (en) * 2020-04-28 2020-07-31 国家电网有限公司 High-voltage power tower cable dry-type terminal sitting type supporting device
CN111478265A (en) * 2020-04-28 2020-07-31 国家电网有限公司 Flexible supporting platform for remotely monitoring state of cable terminal
CN111478264A (en) * 2020-04-28 2020-07-31 国家电网有限公司 Rigid supporting platform for remotely monitoring state of cable terminal

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140219

Termination date: 20191115

CF01 Termination of patent right due to non-payment of annual fee