CN201765890U - Parallel gap lightning protection device for overhead transmission line - Google Patents
Parallel gap lightning protection device for overhead transmission line Download PDFInfo
- Publication number
- CN201765890U CN201765890U CN201020132225XU CN201020132225U CN201765890U CN 201765890 U CN201765890 U CN 201765890U CN 201020132225X U CN201020132225X U CN 201020132225XU CN 201020132225 U CN201020132225 U CN 201020132225U CN 201765890 U CN201765890 U CN 201765890U
- Authority
- CN
- China
- Prior art keywords
- arcing
- lightning protection
- parallel connection
- protection device
- side electrode
- 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 - Lifetime
Links
Images
Landscapes
- Insulators (AREA)
Abstract
The utility model discloses a parallel gap lightning protection device for an overhead transmission line insulator. The parallel gap lightning protection device which comprises a high voltage side electrode and a low voltage side electrode, wherein the high voltage side electrode comprises a voltage-sharing arc striking ring with bidirectional opening structure at both ends. When the lightning protection device is applicable to an insulator suspension string, the high voltage side electrode of the parallel gap device is the voltage-sharing arc striking ring with the bidirectional openings at both ends, and the openings are arranged along conducting wires; for a strain insulator string, the high voltage side electrode of the parallel gap device also adopts the voltage-sharing arc striking ring with the bidirectional openings at both ends, and only a bat-shaped arching horn is mounted at one low voltage side of the insulator string. Therefore, the voltage sharing and lightning protection functions of ceramic or glass insulator string and composite insulator of 500kV overhead transmission line are realized, and the purpose of effectively preventing the power frequency follow current arc from ablating an end hardware tool of the insulator is realized.
Description
Technical field
The utility model relates to the transmission line lightning protection, more specifically, relates to a kind of overhead transmission line parallel connection gaps lightning protection device.
Background technology
The power frequency continued flow electric arc that causes behind the lightning stroke flashover can damage insulator and gold utensil thereof, has brought bigger difficulty for the circuit operation maintenance, often causes enormous economic loss and bad social influence.
The existing lightning protection measures of overhead transmission line mainly contains: set up lightning conducter, reduce the lightning conducter shielding angle, reduce pole tower ground resistance, strengthen line insulation, adopt uneven insulation technology, install coupling ground wire additional, leakage conductor etc. is installed.Its core concept is to improve the lightning withstand level of circuit as much as possible, reduces tripping rate with lightning strike, and these lightning protection measuress can reduce " obstruction type " lightning protection mode.Along with the reinforcement of electrical network framework, the widespread usage of relaying protection and reclosing device can adopt " dredging formula " lightning protection to replenish as the strong of " blocking type " lightning protection measures, with the low small probability thunderbolt problem that solves transmission line that drops into.Under " dredging formula " lightning protection thought guidance, propose the electric transmission line isolator that often is struck by lightning is installed the scheme of parallel connection gaps lightning protection device.
Overhead transmission line insulator parallel connection gaps lightning protection device is simple in structure, easy for installation, cheap, but effectively protect insulator to avoid arc erosion, though cause line lightning resisting level that reduction is arranged slightly, but can improve circuit reclosing success rate.And under economy and technical conditions enabled condition,, can increase the parallel connection gaps distance, thereby reach the purpose that does not reduce line lightning resisting level by increasing the line insulator string length.
China begins to carry out the research of overhead transmission line insulator parallel connection gaps the beginning of this century comprehensively, through effort in a few years, has all obtained bigger achievement in the research and the application facet of the overhead transmission line parallel connection gaps of 35kV～220kV electric pressure.Owing to use the parallel connection gaps lightning protection on special some the big crossover tower in geographical position; win completely as Nanjing and to close 220kV crossover tower and the 220kV of the Zhengjiang City safe line crossover tower of remonstrating with; the river section of striding of safe line of remonstrating with is crossed over the Changjiang river; main span is got over length 1.3km; the height that Jiang Ta is striden in both sides is 106m; the probability that is struck by lightning is bigger, and strides the river section lightning conducter protection is not installed.Flashover taking place when preventing that line insulator string is struck by lightning, avoid going offline, has taked anchor tower that the safeguard measure that lightning arrester, double loop operation, crossover tower install parallel connection gaps additional is installed.After above-mentioned lightning protection measure put into operation, in the period of 1985～1989, lightning stroke trip took place 6 times in circuit altogether, and parallel connection gaps only 1 protection lost efficacy, and had verified the lightning protection effect of overhead transmission line parallel connection gaps protective device effectively.
At present, the 500kV electrical network is the main grid structure of China's power transmission network, and the lightning protection of 500kV overhead transmission line is the important prerequisite that ensures the power system safety and stability operation.Suffer power frequency continued flow behind the lightning stroke flashover to damage the practical situation of insulator and gold utensil thereof at China's 500kV transmission line, be necessary research and propose 500kV overhead transmission line parallel connection gaps lightning protection device.
Summary of the invention
A technical problem to be solved in the utility model provides a kind of overhead transmission line parallel connection gaps lightning protection device; be installed on by the insulator string; realize all pressures and the lightning protection function of insulator, to reach the purpose that effectively prevents power frequency continued flow arc erosion insulator end gold utensil.
Embodiment of the present utility model provides a kind of overhead transmission line parallel connection gaps lightning protection device, comprises high voltage side electrode and low-voltage side electrode; Wherein, high voltage side electrode comprises all pressures arcing ring with the two-way hatch frame in two ends.
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, all press the end of the hatch frame of arcing ring to be sphere.
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, low-voltage side electrode comprises all pressures arcing ring with the two-way hatch frame in two ends.
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, described high-pressure side all presses the physical dimension of arcing ring to be: X1=710mm, Y1=600mm, X2=100mm, Y2=60mm, H=290mm; Low-pressure side all presses the physical dimension of arcing ring to be: X1=708mm, Y1=600mm, X2=150mm, Y2=100mm, H=430mm;
Perhaps
Described high-pressure side all presses the physical dimension of arcing ring to be: X1=500mm, Y1=400mm, X2=80mm, Y2=60mm, H=350mm; It is X1=708mm that described low-pressure side is all pressed the physical dimension of arcing ring, Y1=600mm, X2=150mm, Y2=100mm, H=430mm.
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, low-voltage side electrode comprises arcing horn.
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, the end of last arcing horn is a racket shape, and gap is left in the end of the racket shape end of last arcing horn.For example, the physical dimension of last arcing horn is X1=380mm, X2=150mm, H=430mm; And/or
The diameter of the racket shape end of last arcing horn is 100～120mm, and described gap is 50～75mm.
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, the cross section of high voltage side electrode and low-voltage side electrode is not less than 479.2mm
2
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, the ball-shaped end diameter of hatch frame is 60-90mm, perhaps 50-80mm.
According to an embodiment of parallel connection gaps lightning protection device of the present utility model, high voltage side electrode has pipe structure, and low-voltage side electrode has solid construction.
The overhead transmission line parallel connection gaps lightning protection device that the utility model provides is all pressed arcing ring by adopting, and the voltage that can not only improve insulator distributes, and can effectively protect insulator to avoid the electric arc calcination, improves the anti-thunder performance of circuit.
Description of drawings
Fig. 1 (a) shows the porcelain of the utility model embodiment or the glass insulator connection in series-parallel clearance lightning-proof protective device high voltage side electrode that dangles and all presses the vertical view of arcing ring;
Fig. 1 (b) shows the porcelain of the utility model embodiment or the glass insulator connection in series-parallel clearance lightning-proof protective device high voltage side electrode that dangles and all presses the end view of arcing ring;
Fig. 2 (a) shows the porcelain of the utility model embodiment or the glass insulator connection in series-parallel clearance lightning-proof protective device low-voltage side electrode that dangles and all presses the vertical view of arcing ring;
Fig. 2 (b) shows the porcelain of the utility model embodiment or the glass insulator connection in series-parallel clearance lightning-proof protective device low-voltage side electrode that dangles and all presses the end view of arcing ring;
Fig. 3 (a) shows the porcelain of the utility model embodiment or the end view of glass strain insulator string parallel connection gaps lightning protection device low-voltage side electrode racket shape arcing horn;
Fig. 3 (b) shows the porcelain of the utility model embodiment or the glass strain insulator string parallel connection gaps lightning protection device low-voltage side electrode racket shape arcing horn end view in the A direction;
Fig. 4 (a) shows a kind of vertical view of all pressing arcing ring of composite insulator parallel connection gaps lightning protection device high voltage side electrode of the utility model embodiment;
Fig. 4 (b) shows a kind of end view of all pressing arcing ring of composite insulator parallel connection gaps lightning protection device high voltage side electrode of the utility model embodiment;
Fig. 5 (a) shows a kind of vertical view of all pressing arcing ring of composite insulator parallel connection gaps lightning protection device low-voltage side electrode of the utility model embodiment;
Fig. 5 (b) shows a kind of end view of all pressing arcing ring of composite insulator parallel connection gaps lightning protection device low-voltage side electrode of the utility model embodiment;
Fig. 6 show porcelain of the present utility model or glass insulation substring install before and after the parallel connection gaps lightning protection device the Electric Field Distribution curve ratio;
Fig. 7 show composite insulator of the present utility model install before and after the parallel connection gaps lightning protection device the Electric Field Distribution curve ratio.
Embodiment
With reference to the accompanying drawings the utility model is described more fully, exemplary embodiment of the present utility model wherein is described.
At present; though the porcelain of 500kV transmission line or glass insulation substring and composite insulator install grading ring additional; but it just is used for the Potential distribution of uniform insulation; the lightning protection that does not relate to transmission line; and porcelain or glass insulator dangle string only at high-pressure side installing grading ring, still cause power frequency continued flow arc erosion insulator after the thunderbolt.
The citation form of overhead transmission line insulator parallel connection gaps electrode can be divided into two classes: clavate and annular.The former prevents that in order to improve the Electric Field Distribution of end rod end scaling loss is too fast, can install bead additional in the end or be designed to the goat's horn shape, and the latter can obtain all to press significantly effect and better protect performance.For the overhead transmission line below the 500kV electric pressure, adopt parallel connection gaps only need consider to protect insulator and lead to avoid the power frequency arc calcination; Can and 500kV and above electric pressure overhead transmission line adopt parallel connection gaps should consider earlier whether it satisfies visual corona and radio interference requirement, improve insulator string voltage and distribute, and the protection insulator is avoided the effect of power frequency arc calcination.
Parallel connection gaps lightning protection device low-voltage side electrode adopts the pin type more, and high voltage side electrode adopts pin type, ellipse or U type.Find that by result of study aspect thunder discharge voltage (U50% value) and discharge path, the different parallel connection gaps of electrode shape does not have significant difference.In the utility model, insulator dangle the string parallel connection gaps high and low pressure lateral electrode be that the basis is designed with the annular; For strain insulator-string, because of the influence of arc motion direction, high voltage side electrode is an annular, but low-pressure side can be carried out asymmetrical design, and an arcing horn only is installed above insulator.
Fig. 1, Fig. 2 are respectively 500kV overhead transmission line porcelain or glass insulator the dangle high-pressure side of connection in series-parallel clearance lightning-proof protective device and the diagram of low-voltage side electrode.Wherein, Fig. 1 (a) and Fig. 2 (a) are respectively the high-pressure side of parallel connection gaps lightning protection device and the vertical view of low-voltage side electrode; Fig. 1 (b) and Fig. 2 (b) are respectively the high-pressure side of parallel connection gaps lightning protection device and the end view of low-voltage side electrode; the parallel connection gaps device of a kind of 500kV of being used for overhead transmission line porcelain or glass insulation substring lightning protection is provided; profile all presses arcing ring to have the two-way hatch frame in two ends for all pressing arcing ring.
According to an embodiment of the present utility model, be applicable to simply connected and duplex porcelain or the glass insulator string that dangles, every is 26,28 or 32 insulators, the high-pressure side all presses the physical dimension of arcing ring to be: the arcing ring first direction (for example, along the lead direction) diameter X1=710mm, the arcing ring second direction (for example, the vertical wires installation direction) diameter Y1=600mm, arcing ring is installed bottom level direction half long X2=100mm, open end distance Y 2=60mm, arcing ring height H=290mm, low-pressure side all presses the physical dimension of arcing ring to be: arcing ring is along lead direction diameter X1=708mm, and arcing ring vertical wires direction diameter Y1=600mm, arcing ring install bottom level direction half long X2=150mm, open end distance Y 2=100mm, arcing ring height H=430mm.
According to an embodiment of the present utility model, the open end of all pressing the arcing ring hatch frame is for spherical.Preferably, the diameter of this opening ball-shaped end is 60～90mm.
Fig. 1, Fig. 3 are respectively the high-pressure side and the low-voltage side electrode of 500kV overhead transmission line porcelain or glass strain insulator string parallel connection gaps lightning protection device; Fig. 3 (a) is the end view of the low-voltage side electrode of parallel connection gaps lightning protection device; Fig. 3 (b) is the end view of the low-voltage side electrode of parallel connection gaps lightning protection device in the A direction; the parallel connection gaps lightning protection device of a kind of 500kV of being used for overhead transmission line porcelain or glass insulation substring is provided; the parallel connection gaps high voltage side electrode is for all pressing arcing ring, and low-voltage side electrode is an arcing horn.Preferably, a side that makes progress at strain insulator string is installed a racket shape arcing horn.
According to an embodiment of the present utility model, be applicable to simply connected and duplex porcelain or glass strain insulator string, every is 26,28 or 32 insulators, the physical dimension of arcing horn profile is: arcing horn end-to-end distance insulator central horizontal direction distance X 1=380mm, arcing horn is installed bottom level direction length X 2=150mm, arcing horn height H=430mm.
According to an embodiment of the present utility model, last arcing horn end is a racket shape, and the diameter of racket is 100～120mm, and the gap of 50～75mm is left in the end.
According to an embodiment of the present utility model, for porcelain or glass insulation substring, more than 3 of parallel connection gaps need short circuits reached, clearance distance saw Table 1.
| Insulator structure height (mm) | ?26×155? | ?28×155? | 32×155? |
| Parallel connection gaps distance (mm) | ?3565? | ?3875? | 4495/4340/4185? |
The parallel connection gaps distance of table 1 porcelain or glass insulation substring
Fig. 4 and Fig. 5 are respectively the high-pressure side and the low-voltage side electrode of 500kV overhead transmission line porcelain or glass composite insulator parallel connection gaps lightning protection device; Fig. 4 (a) and Fig. 5 (a) are the high-pressure side of parallel connection gaps lightning protection device and the vertical view of low-voltage side electrode; Fig. 4 (b) and Fig. 5 (b) are the high-pressure side of parallel connection gaps lightning protection device and the end view of low-voltage side electrode; the parallel connection gaps protective device of a kind of 500kV of being used for overhead transmission line composite insulator lightning protection is provided, and parallel connection gaps two electrodes are for all pressing the arcing ring profile.
According to an embodiment of the present utility model, be applicable to simply connected and duplex composite insulator, the insulator structure height is 4050～4960mm, the high-pressure side all presses the physical dimension of arcing ring to be: arcing ring is along lead direction diameter X1=500mm, arcing ring vertical wires direction diameter Y1=400mm, arcing ring is installed bottom level direction half long X2=80mm, open end distance Y 2=60mm, arcing ring height H=350mm, low-pressure side all presses the physical dimension of arcing ring to be: arcing ring is along lead direction diameter X1=708mm, arcing ring vertical wires direction diameter Y1=600mm, arcing ring is installed bottom level direction half long X2=150mm, open end distance Y 2=100mm, arcing ring height H=430mm.
According to an embodiment of the present utility model, all pressing arcing ring is the two-way hatch frames in two ends, and open end is spherical.Preferably, Qiu Xing diameter is 50～80mm.
According to an embodiment of the present utility model, be applied to the compound inslation period of the day from 11 p.m. to 1 a.m, the parallel connection gaps distance sees Table 2.
The parallel connection gaps distance of table 2 composite insulator
According to an embodiment of the present utility model, all press the opening of arcing ring to arrange along the lead direction.Preferably, the cross section of parallel connection gaps device electrode is not less than 479.2mm2.Preferably, parallel connection gaps device high voltage side electrode adopts the tubing design, has pipe structure, and low-voltage side electrode adopts solid material, has solid construction.
Be further execution mode of the present utility model and effect, the utility model carried out Calculation of Potential Distribution, power frequency arc test and tripping rate with lightning strike calculated.
The Electric Field Distribution result of calculation that porcelain or glass insulation substring are installed before and after the parallel connection gaps is seen Fig. 6, and the abscissa among the figure is insulator numbering (arranging to the shaft tower direction along the high-pressure side), and ordinate is the magnitude of voltage that each insulator bears.Near the high-pressure side, the Potential distribution of insulator " band is all pressed arcing ring " is compared with the Potential distribution of insulator " not with pressure-equalizing device " for the Electric Field Distribution on the insulator body, and behind the installation parallel connection gaps, the Potential distribution trend of insulator string evenly.The Electric Field Distribution result of calculation that Fig. 7 installs the parallel connection gaps front and back for composite insulator compares, and abscissa is full skirt numbering (arranging to the shaft tower place along the high-pressure side) among the figure, and ordinate is the magnitude of voltage that unit full skirt unit bears.As seen, arcing ring is all pressed in installation at the insulator two ends, improves the Potential distribution of insulator effectively, has verified the stepless action of parallel connection gaps to the composite insulator both end voltage.
The big electric current arcing of power frequency result of the test shows; to the power supply movement outside, although the arcing time is shorter, electric arc in time is transferred on the end bulb of parallel connection gaps electrode electric arc under electrodynamic effect; sustained combustion on bulb effectively protects insulator to avoid arc erosion.The even arcing ring electrode and the racket shape arcing horn of parallel connection gaps lightning protection device all have more excellent thermal stability.
After on the existing basis of insulating of transmission line parallel connection gaps being installed, owing to shortened insulation distance, the tripping rate with lightning strike of circuit is increased to some extent, the tripping rate with lightning strike of 500kV typical case shaft tower being installed parallel connection gaps front and back circuit compares calculating, sees Table 3.After parallel connection gaps was installed, the more former tripping rate with lightning strike of lightning outage rate had increased by 0.05～0.375, and after the circuit of former lightning performance difference was installed parallel connection gaps, the tripping rate with lightning strike increasing degree was little, can accept the influence of circuit operation.
Table 3 lightning outage rate result of calculation
As can be seen from the above description, the technique effect obtained of the utility model comprises:
(1) arcing ring is all pressed in employing, can not only improve the outstanding voltage of composite insulator and distribute, and can effectively protect insulator to avoid the electric arc calcination, improves the anti-thunder performance of circuit.
(2) for the insulator string that dangles, it is comparatively convenient that gold utensil is changed, and replaceable original link plate is directly installed all pressures arcing ring of parallel connection gaps with parallel connection gaps special use ball-clevis and socket-clevis eye.
(3) consider the installation site of strain insulator string on overhead transmission line, a racket shape arcing horn only is installed, effectively realize the lightning protection of insulator, guarantee grid stability in its low-pressure side.
Although the utility model is specified above, the equivalent process that those of ordinary skills also can revise some concrete structure in above-mentioned or imagine other is realized the utility model.Therefore, the utility model is not limited to the detailed process of above-mentioned execution mode.Although for example only described the implementation procedure of electric pressure 500kV overhead transmission line parallel connection gaps protection in the specification; certainly; the utility model also can be applied to the overhead wire way of other electric pressure, as long as adopt the method that meets in the specification scope, just can reach the similar techniques effect.
Description of the present utility model provides for example with for the purpose of describing, and is not exhaustively or with the utility model to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present utility model and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the utility model design is suitable for special-purpose.
Claims (10)
1. an overhead transmission line parallel connection gaps lightning protection device is characterized in that, comprises high voltage side electrode and low-voltage side electrode;
Wherein, described high voltage side electrode comprises all pressures arcing ring with the two-way hatch frame in two ends.
2. parallel connection gaps lightning protection device according to claim 1 is characterized in that, the end of described hatch frame is spherical.
3. parallel connection gaps lightning protection device according to claim 1 is characterized in that, described low-voltage side electrode comprises all pressures arcing ring with the two-way hatch frame in two ends.
4. parallel connection gaps lightning protection device according to claim 3 is characterized in that,
Described high-pressure side all presses the physical dimension of arcing ring to be: arcing ring first direction diameter X1=710mm, arcing ring second direction diameter Y1=600mm, arcing ring is installed bottom level direction half long X2=100mm, open end distance Y 2=60mm, arcing ring height H=290mm; Low-pressure side all presses the physical dimension of arcing ring to be: arcing ring first direction diameter X1=708mm, arcing ring second direction diameter Y1=600mm, arcing ring is installed bottom level direction half long X2=150mm, open end distance Y 2=100mm, arcing ring height H=430mm;
Perhaps
Described high-pressure side all presses the physical dimension of arcing ring to be: arcing ring first direction diameter X1=500mm, arcing ring second direction diameter Y1=400mm, arcing ring is installed bottom level direction half long X2=80mm, open end distance Y 2=60mm, arcing ring height H=350mm; It is arcing ring first direction diameter X1=708mm that described low-pressure side is all pressed the physical dimension of arcing ring, arcing ring second direction diameter Y1=600mm, arcing ring is installed bottom level direction half long X2=150mm, open end distance Y 2=100mm, arcing ring height H=430mm.
5. parallel connection gaps lightning protection device according to claim 1 is characterized in that described low-voltage side electrode comprises arcing horn.
6. parallel connection gaps lightning protection device according to claim 5 is characterized in that, described end of going up arcing horn is a racket shape, and gap is left in described end of going up the racket shape end of arcing horn.
7. parallel connection gaps lightning protection device according to claim 6, it is characterized in that, the described physical dimension that goes up arcing horn is arcing horn end-to-end distance insulator central horizontal direction distance X 1=380mm, and arcing horn is installed bottom level direction length X 2=150mm, arcing horn height H=430mm;
And/or
The described diameter of going up the racket shape end of arcing horn is 100～120mm, and described gap is 50～75mm.
8. parallel connection gaps lightning protection device according to claim 1 is characterized in that the cross section of described high voltage side electrode and low-voltage side electrode is not less than 479.2mm
2
9. parallel connection gaps lightning protection device according to claim 2 is characterized in that, the ball-shaped end diameter of described hatch frame is 60～90mm, perhaps 50～80mm.
10. parallel connection gaps lightning protection device according to claim 1 is characterized in that described high voltage side electrode has pipe structure, and described low-voltage side electrode has solid construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020132225XU CN201765890U (en) | 2010-03-12 | 2010-03-12 | Parallel gap lightning protection device for overhead transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020132225XU CN201765890U (en) | 2010-03-12 | 2010-03-12 | Parallel gap lightning protection device for overhead transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765890U true CN201765890U (en) | 2011-03-16 |
Family
ID=43718499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020132225XU Expired - Lifetime CN201765890U (en) | 2010-03-12 | 2010-03-12 | Parallel gap lightning protection device for overhead transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765890U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496427A (en) * | 2011-12-08 | 2012-06-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Parallel gap electrode used for ultrahigh voltage transmission line composite insulator lightning protection |
| CN102709814A (en) * | 2012-04-24 | 2012-10-03 | 重庆大学 | Annular parallel gap lightning protection device for overhead line insulator string |
| CN103545059A (en) * | 2013-10-29 | 2014-01-29 | 国家电网公司 | Insulator capable of reducing lightning stroke flashover accidents |
| CN104376936A (en) * | 2014-11-22 | 2015-02-25 | 吉林市能兴电力设备有限公司 | Lightning protection column type insulator |
| CN105976948A (en) * | 2016-04-29 | 2016-09-28 | 国家电网公司 | Anti-bird parallel gap and mounting method thereof |
| CN106558376A (en) * | 2015-09-29 | 2017-04-05 | 江苏双汇孚泰电气有限公司 | A kind of V-type duplex list hanging point quadripartion suspension string |
| CN109065290A (en) * | 2018-09-06 | 2018-12-21 | 国家电网有限公司 | The high altitude localities alternating current circuit 500kV duplex I type band parallel connection gaps suspension insulator |
| CN109346254A (en) * | 2018-10-23 | 2019-02-15 | 襄阳市三三电气有限公司 | Pressure discharges the distribution type arrester that no-spark generates |
| CN112461243A (en) * | 2020-11-23 | 2021-03-09 | 国网江苏省电力有限公司电力科学研究院 | Positioning method and system for inspection robot |
-
2010
- 2010-03-12 CN CN201020132225XU patent/CN201765890U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496427A (en) * | 2011-12-08 | 2012-06-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Parallel gap electrode used for ultrahigh voltage transmission line composite insulator lightning protection |
| CN102709814A (en) * | 2012-04-24 | 2012-10-03 | 重庆大学 | Annular parallel gap lightning protection device for overhead line insulator string |
| CN102709814B (en) * | 2012-04-24 | 2013-09-18 | 重庆大学 | Annular parallel gap lightning protection device for overhead line insulator string |
| CN103545059B (en) * | 2013-10-29 | 2016-09-21 | 国家电网公司 | A kind of insulator that can reduce lightning stroke flashover accident |
| CN103545059A (en) * | 2013-10-29 | 2014-01-29 | 国家电网公司 | Insulator capable of reducing lightning stroke flashover accidents |
| CN104376936A (en) * | 2014-11-22 | 2015-02-25 | 吉林市能兴电力设备有限公司 | Lightning protection column type insulator |
| CN104376936B (en) * | 2014-11-22 | 2016-08-17 | 吉林市能兴电力设备有限公司 | Lightning protection pillar insulator |
| CN106558376A (en) * | 2015-09-29 | 2017-04-05 | 江苏双汇孚泰电气有限公司 | A kind of V-type duplex list hanging point quadripartion suspension string |
| CN106558376B (en) * | 2015-09-29 | 2024-05-03 | 扬州孚泰电气有限公司 | V-shaped double-linked single-hanging-point four-split hanging string |
| CN105976948A (en) * | 2016-04-29 | 2016-09-28 | 国家电网公司 | Anti-bird parallel gap and mounting method thereof |
| CN109065290A (en) * | 2018-09-06 | 2018-12-21 | 国家电网有限公司 | The high altitude localities alternating current circuit 500kV duplex I type band parallel connection gaps suspension insulator |
| CN109346254A (en) * | 2018-10-23 | 2019-02-15 | 襄阳市三三电气有限公司 | Pressure discharges the distribution type arrester that no-spark generates |
| CN112461243A (en) * | 2020-11-23 | 2021-03-09 | 国网江苏省电力有限公司电力科学研究院 | Positioning method and system for inspection robot |
| CN112461243B (en) * | 2020-11-23 | 2021-07-02 | 国网江苏省电力有限公司电力科学研究院 | Positioning method and system for inspection robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201765890U (en) | Parallel gap lightning protection device for overhead transmission line | |
| CN203423465U (en) | Power distribution overhead power transmission line lightning-induced overvoltage lightning protection device | |
| CN101714748B (en) | Method and system for determining serial and parallel connection gaps of overhead power transmission line insulators | |
| CN102709814B (en) | Annular parallel gap lightning protection device for overhead line insulator string | |
| CN101697299B (en) | Lightning protection insulator for insulated conductor of overhead line | |
| CN100483170C (en) | Earthing mode of optical fiber compound overhead ground wire and earthing pilot arc clearance | |
| CN203607169U (en) | Novel adjustable arcing horn of gap type | |
| CN210349489U (en) | Multiple series gap lightning stroke flashover protector | |
| CN201656389U (en) | Parallel clearance lightning protection device for 35kV overhead distribution lines | |
| CN203014162U (en) | 500-kilovolt overhead transmission line suspension-string parallel-gap anti-lighting protective device | |
| CN201260026Y (en) | Lightning protector with series interval | |
| CN203013424U (en) | 500-kilovolt overhead transmission line strain-string parallel-gap anti-lighting protective device | |
| CN204257304U (en) | A kind of glass insulator lightning protection hardware | |
| CN201331982Y (en) | Insulator capable of enhancing external insulation electric strength | |
| CN107546575A (en) | One kind is vertical to blow a coulomb force compresses and draws thunder arc extinguishing ball and double-ball type arcing horn | |
| CN202549509U (en) | Built-in lightning arrester insulator for 10-kilovolt distribution circuit | |
| CN203165582U (en) | Super /extra high tension AC composite insulator umbrella shape structure | |
| CN201514819U (en) | Lightning protection insulator for insulated conductor for overhead line | |
| CN206195153U (en) | Join in marriage electric network line lightning protection device | |
| CN104358465A (en) | Tower head capable of preventing windage yaw | |
| CN202394607U (en) | Parallel gap electrode for lightning protection of composite insulator of ultrahigh-voltage power transmission line | |
| CN205282878U (en) | Line gap | |
| CN204537776U (en) | The adjustable parallel connection gaps structure of strain insulator string | |
| CN204186125U (en) | A kind of wind-deviation tower head | |
| CN204215834U (en) | A kind of direct current arrester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
|
| CX01 | Expiry of patent term |