CN110310790A - A kind of overhead transmission line lightening arresting method - Google Patents
A kind of overhead transmission line lightening arresting method Download PDFInfo
- Publication number
- CN110310790A CN110310790A CN201810254444.6A CN201810254444A CN110310790A CN 110310790 A CN110310790 A CN 110310790A CN 201810254444 A CN201810254444 A CN 201810254444A CN 110310790 A CN110310790 A CN 110310790A
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- lightning protection
- protection device
- disposable
- transmission line
- overhead transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000012212 insulator Substances 0.000 claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000010891 electric arc Methods 0.000 claims abstract description 17
- 208000025274 Lightning injury Diseases 0.000 claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000002633 protecting effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229960001296 zinc oxide Drugs 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The present invention discloses a kind of overhead transmission line lightening arresting method, and by installing disposable lightning protection device on the insulator chain of route, its step are as follows: disposable lightning protection device a) is installed on to the side of insulator chain；B) the air gap is formed between the conductor of the discharge end and different potentials that make disposable lightning protection device is more immediate, and the length of exterior insulation cylinder and the distance of the air gap of disposable lightning protection device are greater than the internal overvoltage gap of route, meanwhile being less than the lightning protection voltage gap of insulator chain；C) when by lightning stroke in when, the air gap formed electric arc, the production conductance body of disposable lightning protection device be discharged electric current melt generate electric arc, and under high arc temperature moment disposable lightning protection device inside generate high pressure gas；D) upper cover of disposable lightning protection device and/or lower cover are washed open under the impact of high pressure gas, and electric arc extinguishes under the injection of high pressure gas.Protecting effect of the present invention is good, and cost is relatively low.
Description
Technical field
The present invention relates to power transmission and distribution shaft tower anti-thunder technical field more particularly to a kind of overhead transmission line lightening arresting methods.
Background technique
Thunder and lightning is diastrous weather phenomenon, often causes serious disasters and accidents, to the mankind and nature for the survival of mankind
The civilization that environment and resource and the mankind create causes great disaster and threat, such as causes forest fire, causes lightning stroke personnel
Injures and deaths etc..The considerable damage of Lightning Disaster is also unable to control and prevents to the current mankind.In the power system, thunder and lightning is even more
There is serious threat, causes equipment damage, line outage, cause power failure, have and notably power grid is paralysed.The thunder of China
It is very frequent to hit disaster, disaster-stricken rate is high, caused by disaster it is extremely serious.
Power system transmission line is exposed to field, is easily struck by lightning in thunderstorm season.For a long time, transmission line of electricity exists
Thunderstorm season tripping rate with lightning strike can not have always been high any more, and the failure of current power transmission route about 2/3rds causes due to being struck by lightning, through state
People's economy causes serious loss, also protects electricity work to summer peak meeting and brings great difficulty.
Currently, the thunder and lightning of transmission line of electricity or distribution line, which easily hits shaft tower, is often used Zinc-Oxide Arrester progress lightning protection.But
It is that Zinc-Oxide Arrester cost is excessively high, and needs periodic test, to debug, arrester causes line tripping, leads
Cause fails to be widely applied always.However, lightning stroke shaft tower tripping is a small probability event, even if being much higher by lightning strike density
The region of average level, in a thunderstorm season, lightning stroke causes the probability of certain insulator string disruptive discharge less than 0.5%.And it is existing
Arrester can restore initial electric connection status automatically after lightning discharge, and every arrester, which must all reach, is subjected to multiple thunder
It hits without failure, after the lightning stroke being otherwise subjected to when because short circuit consequence caused by surge arrester failure is than being fitted without arrester
Fruit is also serious.If existing arrester large area installation, it will bring a large amount of preventive trial pressure.
Summary of the invention
Insulator, which can be protected, again it is an object of the invention to overcome the deficiencies of the prior art and provide one kind anti-to trip,
It is i.e. actively out of service after meeting with a lightning discharge, restore the original lightning protection voltage gap insulation level of insulator, realizes
Lower cost more large area uses, and can substantially reduce lightning stroke trip probability, reduce the overhead transmission line lightening arresting method of O&M cost.
Technical scheme is as follows: a kind of overhead transmission line lightening arresting method, by installing on the insulator chain of route
Disposable lightning protection device, its step are as follows:
A) the disposable lightning protection device is installed on to the side of the insulator chain；
B) it is formed between air between the conductor of the discharge end and different potentials that make the disposable lightning protection device is more immediate
Gap, and the length of the exterior insulation cylinder of the disposable lightning protection device and the distance of the air gap are greater than the line
The internal overvoltage gap on road, meanwhile, it is less than the lightning protection voltage gap of the insulator chain；
When c) in by lightning stroke, the air gap forms electric arc, and the production conductance body of the disposable lightning protection device is discharged electricity
Stream melt generate electric arc, and under high arc temperature moment disposable lightning protection device inside generate high pressure gas；
D) upper cover of the disposable lightning protection device and/or lower cover are washed open under the impact of the high pressure gas, and the electric arc exists
Extinguish under the injection of the high pressure gas.
Preferably, being respectively mounted the disposable lightning protection device on every insulator chain of overhead transmission line.
In step a), the connecting pin of the disposable lightning protection device is installed on to upper end/lower end of the insulator chain
In metal-ware or it is symmetrically arranged in the upper and lower side metal-ware of the insulator chain.
In step a), the connecting pin of the disposable lightning protection device is installed by connecting bracket.
In step b), the length of the production conductance body of the disposable lightning protection device is equal to or less than exterior insulation cylinder
Length.
In step b), the air gap is equal to the 70 ~ 90% of the lightning protection voltage gap of the insulator chain.
In step b), the disposable lightning protection device always keeps the distance of the air gap by structure design
Unanimously.
In step c), the production conductance body of the disposable lightning protection device includes gas exhausted material and conductive material.
In step d), the upper cover of the disposable lightning protection device and/or the connection tautness of lower cover are less than the high pressure
The impact force of gas.
Optionally, the upper cover of the disposable lightning protection device and/or lower cover and exterior insulation cylinder are integrally formed or divide
Body combination forming.
Compared with the existing technology, the beneficial effects of the present invention are a kind of overhead transmission line lightening arresting method through the invention,
Disposable lightning protection device is installed on the insulator chain of route, when in by lightning stroke, can preferentially puncture the air gap, make between air
Gap forms electric arc, and the production conductance body of disposable lightning protection device is discharged electric current and melts generation electric arc, and the moment under high arc temperature
High pressure gas is generated in the inside of disposable lightning protection device, high pressure gas goes out extinguishing electricity from one end of disposable lightning protection device
Arc, that is, the possibility for preventing insulator chain to be punctured by thunder and lightning, tripping caused by turn avoiding because of lightning stroke have reached lightning-arrest safely
Purpose, and cost is relatively low for the disposable lightning protection device, is preferably respectively mounted on every insulator chain of overhead transmission line disposable
Lightning protection device can substantially reduce lightning stroke trip probability, the disposable lightning protection dress that replacement acted when combining integrative interruption maintenance
It sets, greatly reduces cost of labor.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of flow chart of overhead transmission line lightening arresting method of the embodiment of the present invention；
Fig. 2 is a wherein implementation structural schematic diagram for a kind of overhead transmission line lightening arresting method of the embodiment of the present invention；
Fig. 3 is the scheme of installation of disposable lightning protection device described in the embodiment of the present invention one；
Fig. 4 is one of another structural schematic diagram of disposable lightning protection device described in the embodiment of the present invention one；
Fig. 5 is another second structural representation of disposable lightning protection device described in the embodiment of the present invention one；
Fig. 6 is the scheme of installation of disposable lightning protection device described in the embodiment of the present invention two；
Fig. 7 is the scheme of installation of disposable lightning protection device described in the embodiment of the present invention three；
Fig. 8 is the scheme of installation of disposable lightning protection device described in the embodiment of the present invention four.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
In the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.Below will
The present invention will be described in detail with reference to the accompanying drawings and embodiments.
Embodiment one
Fig. 1 ~ 3 are please referred to, a kind of overhead transmission line lightening arresting method is present embodiments provided, by pacifying on the insulator chain 2 of route 1
Disposable lightning protection device 3 is filled, its step are as follows:
A) the disposable lightning protection device 3 is installed on to the side of the insulator chain 2；
B) it is formed between air between the conductor of the discharge end and different potentials that make the disposable lightning protection device 3 is more immediate
Gap 4, and the length of the exterior insulation cylinder 5 of the disposable lightning protection device 3 and the distance of the air gap 4 are greater than route 1
Internal overvoltage gap, meanwhile, be less than the lightning protection voltage gap of insulator chain 2；
When c) in by lightning stroke, the air gap 4 forms electric arc, and the production conductance body 6 of the disposable lightning protection device 3 is discharged
Electric current melt generate electric arc, and under high arc temperature moment disposable lightning protection device 3 inside generate high pressure gas；
D) upper cover of the disposable lightning protection device 3 and/or lower cover are washed open under the impact of the high pressure gas, and the electric arc exists
Extinguish under the injection of the high pressure gas.
By installing disposable lightning protection device 3 on the insulator chain 2 of route 1, when in by lightning stroke, can preferentially breakdown it is empty
Gas gap 4 makes the air gap 4 form electric arc, and the production conductance body 6 of disposable lightning protection device 3 is discharged electric current and melts generation electric arc,
And moment fills in the inside of disposable lightning protection device 3 generation high pressure gas, high pressure gas from disposable lightning protection under high arc temperature
Extinguishing electric arc is gone out in the one end for setting 3, that is, the possibility for preventing insulator chain 2 to be punctured by thunder and lightning, caused by turn avoiding because of lightning stroke
Tripping has achieved the purpose that take shelter from the thunder safely, and cost is relatively low for used disposable lightning protection device 3.
Disposable lightning protection device 3 used in the present embodiment is disposable, it is therefore advantageous to, in overhead transmission line 1
It is respectively mounted the disposable lightning protection device 3 on every insulator chain 2, can substantially reduce by lightning stroke probability, the disposable lightning protection
Device 3 using after primary it is vacant, therefore, can because same overhead transmission line 1 is extremely low by the probability in lightning stroke twice in 1 year
Greatly reduce cost of labor.
In specific implementation process, the connecting pin of the disposable lightning protection device 3 is installed on by a connecting bracket 7 described
The upper end metal-ware of insulator chain 2 includes on cross arm of tower.
In the present embodiment, the length of the production conductance body 6 of the disposable lightning protection device 3 is equal to the length of exterior insulation cylinder 5
Degree.It should be noted that the length of the exterior insulation cylinder 5 of the disposable lightning protection device 3 and the distance of the air gap 4 are intended to
Greater than the internal overvoltage gap of route 1, meanwhile, it is less than the lightning protection voltage gap of insulator chain 2.
Preferably, the air gap 4 is equal to the 70 ~ 90% of the lightning protection voltage gap of the insulator chain 2.The air
The distance in gap 4 is designed with the lightning protection voltage gaps of 70 ~ 90% insulator chains 2.
Always keep the distance of the air gap 4 preferably, the disposable lightning protection device 3 can be designed by structure
Unanimously.To make the distance of the air gap 4 that great fluctuation process not occur, the thunder-lightning less than the insulator chain 2 is remained
Press gap.It as shown in Figure 4, Figure 5, when it is implemented, can be by the connecting pin of the disposable lightning protection device 3 and connecting bracket
One spring 8 is set between 7, or is led in the arc that an opening upwards are arranged in the discharge end bottom surface of the disposable lightning protection device 3
Piece 9, even if the distance of the air gap 4 can be consistent in the case where blowing hard, has by above two design
Slight error influences little can be ignored.
In the present embodiment, the production conductance body 6 of the disposable lightning protection device 3 includes gas exhausted material and conductive material, makes it
It can produce a large amount of innocuous gas after melting, the inside of disposable lightning protection device 3 enabled to form high pressure gas.
The upper cover of the disposable lightning protection device 3 and/or the connection tautness of lower cover are less than rushing for the high pressure gas
Hit power.So that the upper cover and/or lower cover of the disposable lightning protection device 3 can be washed open under the impact of high pressure gas, to enable height
Body of calming the anger is discharged arc extinction.
Optionally, the upper cover of the disposable lightning protection device 3 and/or lower cover and exterior insulation cylinder 5 be integrally formed or
Split assembled molding.It may be designed to be integrally formed, may be designed as Split assembled molding, need to only meet the disposable lightning protection dress
It sets 3 upper cover and/or the connection tautness of lower cover is less than the impact force of the high pressure gas.
Embodiment two
As shown in fig. 6, the present embodiment and embodiment one the difference is that, in the present embodiment, the disposable lightning protection device 3
The length of production conductance body 6 be less than the length of exterior insulation cylinder 5, the exterior insulation cylinder 5 of the disposable lightning protection device 3
Length and the distance of the air gap 4 be greater than the internal overvoltage gap of route 1, meanwhile, be less than the anti-of insulator chain 2
Lightning voltage gap.
The above embodiments one and embodiment two are only the two of them of multiple embodiments, the disposable lightning protection device
Therefore the length of 3 production conductance body 6 does not define.
Embodiment three
As shown in fig. 7, the present embodiment and embodiment one the difference is that the disposable lightning protection device 3 installation site,
In the present embodiment, the connecting pin of the disposable lightning protection device 3 is installed on the lower end of the insulator chain 2 by connecting bracket 7
In metal-ware, the discharge end of the disposable lightning protection device 3 is upward, more immediate with the conductor of upward different potentials
Form the air gap 4.The length of the exterior insulation cylinder 5 of the disposable lightning protection device 3 and the distance of the air gap 4 are intended to greatly
In the internal overvoltage gap of route 1, meanwhile, it is less than the lightning protection voltage gap of insulator chain 2.
The principle of the present embodiment is identical as the principle of embodiment one, therefore does not repeat.
In the present embodiment, the length of the production conductance body 6 of the disposable lightning protection device 3 is equal to the length of exterior insulation cylinder 5
Degree.Certainly, in another embodiment, the length that the production conductance body 6 of disposable lightning protection device 3 also can be changed makes it be less than outside
The length of insulating cylinder body 5 can refer to embodiment two.
Example IV
As shown in figure 8, the difference of the present embodiment and embodiment one and embodiment three, the peace of the disposable lightning protection device 3
Dress combines the installation method of the embodiment one and embodiment three, and in the present embodiment, the disposable lightning protection device 3 is equipped with two
A, connecting pin is symmetrically arranged in the upper and lower side metal-ware of the insulator chain 2 by connecting bracket 7, and upper and lower two
The air gap 4 is formed between the discharge end of disposable lightning protection device 3.The exterior insulation cylinder of described two disposable lightning protection devices 3
The total length of body 5 and the distance of the air gap 4 are greater than the builtin voltage gap of the route 1, meanwhile, it is less than the insulation
The lightning protection voltage gap of substring 2.
The principle of the present embodiment and the principle of above-described embodiment are identical, therefore do not repeat.
In the present embodiment, the length of the production conductance body 6 of described two disposable lightning protection devices 3 is equal to exterior insulation cylinder
5 length.Certainly, in other embodiments, the length of the production conductance body 6 of described two disposable lightning protection devices 3 also can be changed,
It is set to be less than the length of exterior insulation cylinder 5, the length of the production conductance body 6 of two disposable lightning protection devices 3 is not necessarily equal.
The above is merely preferred embodiments of the present invention, be not intended to restrict the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of overhead transmission line lightening arresting method, which is characterized in that filled by installing disposable lightning protection on the insulator chain of route
It sets, its step are as follows:
A) the disposable lightning protection device is installed on to the side of the insulator chain；
B) it is formed between air between the conductor of the discharge end and different potentials that make the disposable lightning protection device is more immediate
Gap, and the length of the exterior insulation cylinder of the disposable lightning protection device and the distance of the air gap are greater than the line
The internal overvoltage gap on road, meanwhile, it is less than the lightning protection voltage gap of the insulator chain；
When c) in by lightning stroke, the air gap forms electric arc, and the production conductance body of the disposable lightning protection device is discharged electricity
Stream melt generate electric arc, and under high arc temperature moment disposable lightning protection device inside generate high pressure gas；
D) upper cover of the disposable lightning protection device and/or lower cover are washed open under the impact of the high pressure gas, and the electric arc exists
Extinguish under the injection of the high pressure gas.
2. a kind of overhead transmission line lightening arresting method according to claim 1, which is characterized in that in every insulation of overhead transmission line
The disposable lightning protection device is respectively mounted on substring.
3. a kind of overhead transmission line lightening arresting method according to claim 1, which is characterized in that in step a), by described one
The connecting pin of secondary property lightning protection device is installed in upper end/lower end metal-ware of the insulator chain or is symmetrically arranged on described exhausted
In the upper and lower side metal-ware of edge substring.
4. a kind of overhead transmission line lightening arresting method according to claim 1 or 3, which is characterized in that in step a), described one
It is installed by connecting bracket the connecting pin of secondary property lightning protection device.
5. a kind of overhead transmission line lightening arresting method according to claim 1, which is characterized in that described primary in step b)
Property lightning protection device production conductance body length be equal to or less than exterior insulation cylinder length.
6. a kind of overhead transmission line lightening arresting method according to claim 1, which is characterized in that in step b), the air
Gap is equal to the 70 ~ 90% of the lightning protection voltage gap of the insulator chain.
7. a kind of overhead transmission line lightening arresting method according to claim 1, which is characterized in that described primary in step b)
Property lightning protection device by structure design be always consistent the distance of the air gap.
8. a kind of overhead transmission line lightening arresting method according to claim 1, which is characterized in that described primary in step c)
The production conductance body of property lightning protection device includes gas exhausted material and conductive material.
9. a kind of overhead transmission line lightening arresting method according to claim 1, which is characterized in that described primary in step d)
Property lightning protection device upper cover and/or lower cover connection tautness be less than the high pressure gas impact force.
10. a kind of overhead transmission line lightening arresting method according to claim 9, which is characterized in that the disposable lightning protection device
Upper cover and/or lower cover and exterior insulation cylinder are integrally formed or Split assembled forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810254444.6A CN110310790B (en) | 2018-03-27 | 2018-03-27 | Lightning protection method for overhead line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810254444.6A CN110310790B (en) | 2018-03-27 | 2018-03-27 | Lightning protection method for overhead line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110310790A true CN110310790A (en) | 2019-10-08 |
| CN110310790B CN110310790B (en) | 2024-05-28 |
Family
ID=68074128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810254444.6A Active CN110310790B (en) | 2018-03-27 | 2018-03-27 | Lightning protection method for overhead line |
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| Country | Link |
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| CN (1) | CN110310790B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730834A (en) * | 2012-10-15 | 2014-04-16 | 闫仁宝 | Gas injection type parallel gap device |
| CN104240868A (en) * | 2014-10-11 | 2014-12-24 | 国家电网公司 | Line insulator and horn-shaped gap thereof |
| CN204315311U (en) * | 2014-10-11 | 2015-05-06 | 国家电网公司 | A kind of line insulator and angle-style gap thereof |
| WO2015120725A1 (en) * | 2014-02-17 | 2015-08-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Lightning protection structure of overhead high voltage transmission line |
| CN107705941A (en) * | 2017-09-28 | 2018-02-16 | 上海兆邦电力器材有限公司 | For the arc-blowing device on electric power circuit insulator class electrical equipment |
| CN207938398U (en) * | 2018-03-27 | 2018-10-02 | 深圳带路科技有限公司 | A kind of disposable lightning protection device |
-
2018
- 2018-03-27 CN CN201810254444.6A patent/CN110310790B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730834A (en) * | 2012-10-15 | 2014-04-16 | 闫仁宝 | Gas injection type parallel gap device |
| WO2015120725A1 (en) * | 2014-02-17 | 2015-08-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Lightning protection structure of overhead high voltage transmission line |
| CN104240868A (en) * | 2014-10-11 | 2014-12-24 | 国家电网公司 | Line insulator and horn-shaped gap thereof |
| CN204315311U (en) * | 2014-10-11 | 2015-05-06 | 国家电网公司 | A kind of line insulator and angle-style gap thereof |
| CN107705941A (en) * | 2017-09-28 | 2018-02-16 | 上海兆邦电力器材有限公司 | For the arc-blowing device on electric power circuit insulator class electrical equipment |
| CN207938398U (en) * | 2018-03-27 | 2018-10-02 | 深圳带路科技有限公司 | A kind of disposable lightning protection device |
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| Publication number | Publication date |
|---|---|
| CN110310790B (en) | 2024-05-28 |
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