CN202309001U - Non-contact power transmission and distribution line lightning protection apparatus - Google Patents
Non-contact power transmission and distribution line lightning protection apparatus Download PDFInfo
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- CN202309001U CN202309001U CN2011204327809U CN201120432780U CN202309001U CN 202309001 U CN202309001 U CN 202309001U CN 2011204327809 U CN2011204327809 U CN 2011204327809U CN 201120432780 U CN201120432780 U CN 201120432780U CN 202309001 U CN202309001 U CN 202309001U
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Abstract
The utility model discloses a non-contact power transmission and distribution line lightning protection apparatus, comprising a lightning arrester, an arc ignition electrode and a connection board. A lower end of the lightning arrester employs the connection board to connect with the arc ignition electrode; the arc ignition electrode employs an arc-shaped stainless steel casting and the lower end keeps a distance of 80-130 MM with line leads to form a discharging gap. An upper end of the lightning protection apparatus employs connecting pieces to be fixed on a cross-arm; A and C phases of three lines use a same cross-arm and a B phase individually employs a cross-arm. The apparatus has the advantages of a simple structure and low costs and solves the problem that the lightning arrester after long-term charged operation is easy to age, the wiring is complex and the installation and maintenance are troublesome; regular prevention tests are needed and the test power failure influence surface is large. The apparatus is not in connection with charged leads, does not have to be provided with a grounding apparatus again, has a long service life and good lightning protection effects, is free of maintenance and can be widely used for 35 KV and 10 KV overhead bar lead or insulation lead power transmission and distribution lines. The apparatus can also utilize a tower to naturally ground and discharge; the installation is convenient, simple and reliable and is easy for popularization and application.
Description
Technical field
The utility model relates to a kind of electric line lightning proof, particularly a kind of contactless lightning proof that is used on 35KV, the 10KV electric line.
Background technology
35KV circuit and 10KV circuit line length are wide in electrical network, and are directly related to the industrial and agricultural production and the people's household electricity, are the electric pressure circuits the closest with customer relationship.When in the circuit running, bearing operating voltage, switching overvoltage or atmospheric over-voltage, all the insulation flashover accident may take place.Power department was the generation of improvement accident in recent years, had taked measures that the insulation degree of circuit is improved, and circuit can keep continual and steady running status under normal operating voltage effect.Since new technology, the extensive use of new equipment in 35KV, 10KV electrical power trans mission/distribution system, and switching overvoltage is limited in lower level, no longer is the principal element of harm line insulation.But show that according to interrelated data introduction and home and abroad operating experience 35KV circuit and 10KV circuit receive the anti-thunder degree of lightning impulse generally lower, so because of become by lightning impulse to cause the main cause of circuit generation tripping operation accident.
At present; The measure of 35KV, the anti-thunderbolt of 10KV electric line has: the 35KV line thunder protection generally is employed in transformer station's turnover coil holder and establishes the overhead ground wire about 1.5 kilometers and install lightning arrester on the line; The lightning protection of 10KV line facility then depends on the installing lightning arrester basically; The installation method that is adopted is lightning arrester and directly is connected with live wire.Therefore inevitably there are variety of issue and defective: the one, lightning arrester directly is connected with live wire, the long-term charging operation of lightning arrester and accelerate to wear out; The 2nd, because the lightning arrester charging operation, need make regular preventive trial, lightning arrester power failure dismounting had both influenced the normal power supply of electric power enterprise and had wasted lot of manpower and material resources, had a strong impact on again that users produce normally, the household electricity order; The 3rd, need on the shaft tower of every place's installing lightning arrester, earthing device be installed, increased the expense that material is invested and compensated to occupation of land side to power supply department; The 4th, the lightning arrester upper and lower side is all wanted wiring, the installation and maintenance trouble.
Summary of the invention
The utility model is intended to provide a kind of simple in structure, cheap to existing problem of above-mentioned lightning proof and defective, is not connected with live wire, need not reinstall the contactless electric line lightning proof of earthing device.
The technical scheme that the utility model adopts is following:
This contactless electric line lightning proof comprises lightning arrester, arc electrode and connecting plate.The lower end of said lightning arrester adopts connecting plate to connect said arc electrode, and its upper end adopts connector to be fixed on the cross-arm of electric pole.
Said lightning arrester adopts polymeric metal oxide surge arrester.
Said arc electrode adopts the stainless steel alloy foundry goods, curved shape, and its arc-shaped upper ends links together through said connecting plate and lightning arrester, keeps the distance of 80-130MM between lower end and the line conductor, forms discharging gap.
In three-phase line, adopt three these lightning proofs, two upper ends adopt the connector symmetry to be fixed on the two ends of A, C two mutually public cross-arms, and another upper end is fixed on the end that B uses cross-arm mutually separately.
If on angle tower, use tower support capable of using to be used for fixing this device.
The lightning arrester upper end of this device is fixed in cross-arm or the tower support; The lower end connects arc electrode; Lightning overvoltage is done the time spent; Between lead and arc electrode, form discharging gap, leak into the earth to lightning overvoltage through lightning arrester and natural grounding substance, thereby the protection circuit insulator is not smashed and the generation that effectively prevents the lightning-caused breaking accident by thunder and lightning.Thereby this device can be contained in the outlet side of electric substation, is used for limiting the thunder and lightning that comes from circuit and invades the harm of ripple to substation facilities, also can be contained on the shaft tower in the frequent zone of lightening activity and on the shaft tower of important span line.
Because lightning arrester body does not bear system voltage and switching overvoltage when electrical network normally moves, thereby can effectively reduce maintenance cost, strengthen reliability and useful life.
This contactless electric line lightning proof is simple in structure, cheap, solved the long-term charging operation of lightning arrester be prone to aging, wiring is complicated, the installation and maintenance trouble, need make problems such as regular preventive trial and test power failure influence surface are big.This device is not connected with live wire, need not reinstall earthing device, has advantages such as long service life, non-maintaining, anti-thunderbolt be effective, can be widely used in 35KV and 10KV and make somebody a mere figurehead plain conductor or insulated conductor electric line.Shaft tower natural grounding discharge also capable of using, easy for installation, simple, reliable, be easy to apply.
Description of drawings
Accompanying drawing is the structural representation of the utility model.
Embodiment
Further introduce the embodiment of the utility model below in conjunction with accompanying drawing.
Referring to accompanying drawing, with the 35KV circuit the utility model being installed is example, and this contactless electric line lightning proof mainly is made up of arc electrode 1, connecting bolt 2, connecting plate 3, connecting bolt and nut assembly 4, lightning arrester 5 etc.
Arc electrode 1 adopts the stainless steel alloy foundry goods; Curved shape; Arc electrode 1 band centre bore; Corresponding arc electrode 1 centre bore in connecting plate 3 lower ends is provided with screwed hole, by connecting bolt 2 arc electrode 1 and connecting plate 3 is connected and fixed, and connecting plate 3 is fixed on the terminal block of lightning arrester 5 lower ends with connecting bolt and nut assembly 4 connecting hole through connecting plate 3 sides; It is whole to make arc electrode 1 and lightning arrester 5 form a fixing lightning proof. and then, the upper end that this lightning proof is whole is fixed on the cross-arm 7 with set bolt and nut assembly 6.A in the three-phase line, C two mutually public cross-arms, the lightning arrester symmetry is fixed on its public cross-arm two ends, and B uses a cross-arm mutually separately, and lightning arrester is fixed on this separately with cross-arm one end, and above-mentioned cross-arm all is fixedly connected on the electric pole.
Adopt U-bolt and nut assembly that cross-arm 7 is fixed on the electric pole.Should make whole install vertical of lightning proof, let the arc center of its lower end arc electrode 1, and keep the distance of 80-130MM, formation discharging gap with lead over against lead with lead.This distance can be adjusted through the height that is fixed on the cross-arm 7 on the electric pole.
The band iron of connecting plate 3 employings-4 * 40 is processed, and is used to connect lightning arrester 5 and arc electrode 1.
Cross-arm adopts the angle steel of ∠ 6 * 63, and length can be decided according to the distance of electric pole and lead.
If lightning proof is used on the angle tower, can be directly installed in the tower support.
The utility model can effectively improve the anti-thunder degree of circuit, and prevention lightning stroke trip accident improves the security reliability of electrical network, is applicable to the line segment that lightening activity frequently subjects to be struck by lightning and the lightning protection of long span transmission line structure.
Claims (4)
1. contactless electric line lightning proof; It is characterized in that: this device comprises lightning arrester, arc electrode and connecting plate; The lower end of said lightning arrester adopts connecting plate to connect said arc electrode, and its upper end adopts connector to be fixed on the cross-arm of electric pole.
2. electric line lightning proof according to claim 1 is characterized in that: said lightning arrester adopts polymeric metal oxide surge arrester.
3. electric line lightning proof according to claim 1; It is characterized in that: said arc electrode adopts the stainless steel alloy foundry goods; Curved shape; Its arc-shaped upper ends links together through said connecting plate and lightning arrester, keeps the distance of 80-130MM between lower end and the line conductor, forms discharging gap.
4. electric line lightning proof according to claim 1; It is characterized in that: in three-phase line, adopt three these lightning proofs; Two upper ends adopt the connector symmetry to be fixed on the two ends of A, C two mutually public cross-arms, and another upper end is fixed on the end that B uses cross-arm mutually separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204327809U CN202309001U (en) | 2011-11-02 | 2011-11-02 | Non-contact power transmission and distribution line lightning protection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204327809U CN202309001U (en) | 2011-11-02 | 2011-11-02 | Non-contact power transmission and distribution line lightning protection apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN202309001U true CN202309001U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204327809U Active CN202309001U (en) | 2011-11-02 | 2011-11-02 | Non-contact power transmission and distribution line lightning protection apparatus |
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| Country | Link |
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| CN (1) | CN202309001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403686A (en) * | 2011-11-02 | 2012-04-04 | 河南省电力公司漯河供电公司 | Lightning protection device for contactless power transmission and distribution line |
-
2011
- 2011-11-02 CN CN2011204327809U patent/CN202309001U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403686A (en) * | 2011-11-02 | 2012-04-04 | 河南省电力公司漯河供电公司 | Lightning protection device for contactless power transmission and distribution line |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |