CN114709786A - Support arrangement for arrester - Google Patents
Support arrangement for arrester Download PDFInfo
- Publication number
- CN114709786A CN114709786A CN202210392142.1A CN202210392142A CN114709786A CN 114709786 A CN114709786 A CN 114709786A CN 202210392142 A CN202210392142 A CN 202210392142A CN 114709786 A CN114709786 A CN 114709786A
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- Prior art keywords
- arrester
- insulating sleeve
- lightning arrester
- conductive
- supporting device
- 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.)
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Links
- 239000000463 material Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a supporting device of a lightning arrester, which comprises a first component and a second component positioned below the first component, wherein the first component comprises a first conductive piece and an insulating sleeve, one end of the first conductive piece is electrically connected with the upper end of an equipment lightning arrester, the other end of the first conductive piece is connected with the upper end of the insulating sleeve, the second component comprises a second conductive piece, a standby lightning arrester and an elastic piece, the upper end of the standby lightning arrester is arranged in the insulating sleeve, the lower end of the standby lightning arrester is electrically connected with the lower end of the equipment lightning arrester through the second conductive piece, the standby lightning arrester can slide relatively in the insulating sleeve, the upper end of the standby lightning arrester is selectively contacted with the first conductive piece, the two ends of the elastic piece are respectively connected with the insulating sleeve and the second conductive piece, and the elastic piece has the tendency of driving the insulating sleeve to move towards the direction of the second conductive piece. The protection device can still protect the protected device under the condition that the equipment lightning arrester is damaged, and the reliability of the line is improved.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a supporting device of a lightning arrester.
Background
Lightning arresters are a relatively common type of lightning protection device and are typically installed in parallel with the equipment to be protected (e.g., a transformer). When high voltage or strong current exists on the circuit, the interior of the lightning arrester is conducted, and lightning is conducted to the ground, so that the strong current is prevented from damaging protected equipment. When the arrester bears thunder and lightning overcurrent, often can cause the arrester body to explode or burst because the electric current is too big, under the unsettled and contactless protection equipment's of lead wire on the arrester circumstances, circuit generally can resume normal operating after transformer substation switch (or the automatic switch outside the station) coincidence, however, after the arrester is exploded, lead wire on the arrester can drop and overlap joint to neighbouring cross arm or pole on the action of gravity, cause circuit ground fault, if detect earth fault again with transformer substation switch (or the automatic switch outside the station) coincidence and cause the switch trip-out this moment, the coincidence is unsuccessful and makes the unable normal operating that resumes of circuit, the reliability of circuit power supply is lower. In addition, if equipment such as transformer lose lightning protection after strong thunderstorm weather arrester bursts, have the risk of thunderbolt damage equipment.
Disclosure of Invention
The invention aims to: the utility model provides a strutting arrangement of arrester, it still can protect by protection equipment under the condition that equipment arrester damaged, improves the circuit reliability.
In order to achieve the purpose, the invention adopts the following technical scheme:
there is provided a supporting device of a surge arrester, comprising a first assembly and a second assembly located below the first assembly, the first assembly comprises a first conductive piece and an insulating sleeve, one end of the first conductive piece is electrically connected with the upper end of the equipment lightning arrester, the other end of the first conductive piece is connected with the upper end of the insulating sleeve, the second assembly comprises a second conductive piece, a standby lightning arrester and an elastic piece, the upper end of the spare lightning arrester is arranged in the insulating sleeve, the lower end of the spare lightning arrester is electrically connected with the lower end of the equipment lightning arrester through the second conductive piece, the spare lightning arrester can slide relatively in the insulating sleeve, so that the upper end of the spare lightning arrester is selectively contacted with the first conductive piece, two ends of the elastic piece are respectively connected with the insulating sleeve and the second conductive piece, and the elastic piece has a tendency of driving the insulating sleeve to move towards the direction of the second conductive piece.
As a preferable technical solution of the supporting device of the lightning arrester, a first conductive contact is convexly disposed on the first conductive member, and the first conductive contact is located inside the insulating sleeve.
As a preferable aspect of the supporting device for the surge arrester, the spare surge arrester is provided with a piston at one end of the insulating sleeve, and the piston is elastically connected to an inner side wall of the insulating sleeve.
As a preferable technical solution of the supporting device of the lightning arrester, the number of the elastic members is two, and the two elastic members are respectively distributed on two opposite sides of the spare lightning arrester.
As a preferable technical solution of the supporting device for the lightning arrester, the elastic member is a cylindrical structure, and the elastic member is sleeved on the periphery of the spare lightning arrester.
As a preferable technical solution of the supporting device for the lightning arrester, one end of the first conductive member close to the equipment lightning arrester and one end of the second conductive member close to the equipment lightning arrester are both provided with a push-in spring clip, and the push-in spring clip is used for clamping the equipment lightning arrester.
As a preferable technical solution of the supporting device of the lightning arrester, the second conductive member is electrically connected to the lower end of the backup lightning arrester through a second conductive contact.
As a preferable technical scheme of the supporting device of the lightning arrester, a rain cover is arranged on the periphery of the insulating sleeve.
As a preferable technical solution of the supporting device for the arrester, the plurality of rain covers are provided, and the plurality of rain covers are distributed at intervals along the axial center direction of the insulating sleeve.
As a preferable technical scheme of the supporting device of the lightning arrester, the periphery of the insulating sleeve is coated with a high-temperature discoloring layer, and the high-temperature discoloring layer is made of a high-temperature discoloring material.
The invention has the beneficial effects that: the equipment lightning arrester bears lightning current and is easy to explode, when the equipment lightning arrester explodes, under the action of the elastic piece, the insulating sleeve and the standby lightning arrester are mutually pulled together, the depth of the standby lightning arrester inserted into the insulating sleeve is increased and is contacted with the first conductive piece, so that the standby lightning arrester is connected to a line in parallel, and the standby lightning arrester replaces the equipment lightning arrester to continuously provide protection for the line. In addition, because the elastic component orders about the trend of insulating sleeve to the electrically conductive direction motion of second, when the equipment arrester explodes, insulating sleeve and reserve arrester are drawn each other and are closed, make the lead wire on the equipment arrester have enough big safe distance with cross arm or pole and prevent earth fault, have improved the security of circuit to a great extent.
Drawings
The invention is explained in more detail below with reference to the figures and examples.
Fig. 1 is a structural view of an installation of a supporting device of an arrester and an equipment arrester according to an embodiment.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is a structural view of a supporting device of the arrester according to the embodiment (only one elastic member is shown in the drawing).
Fig. 4 is a schematic connection diagram of the insulating sleeve, the backup arrester and the rain cover according to the embodiment.
Fig. 5 is a schematic view illustrating a connection between a first conductive member and a push-in spring clip according to an embodiment of the present invention.
In the figure:
1. a first conductive member; 2. an insulating sleeve; 3. a push-in spring clip; 4. a first conductive contact; 5. a rain cover; 6. a spare lightning arrester; 7. a second conductive contact; 8. a second conductive member; 9. a piston; 10. an elastic member; 100. a transformer; 200. an electric pole; 300. an equipment arrester.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 4, the present invention provides a supporting device for an arrester (referred to as a supporting device for short in this specification), which can support an equipment arrester 300 and enhance the lightning protection function of protected equipment, and when the equipment arrester 300 is damaged, a spare arrester 6 can be automatically incorporated into a circuit to continuously protect the protected equipment, so that the reliability is high. In this embodiment, the specific structure of the supporting device of the lightning arrester will be described in detail by taking the lightning arrester 300 as an example for lightning protection of the transformer 100 mounted on the pole 200. Wherein, this strutting arrangement includes first subassembly and the second subassembly that is located first subassembly below. The first assembly includes a first conductive member 1 and an insulating sleeve 2, one end of the first conductive member 1 is electrically connected to the upper end of the equipment arrester 300, and the other end of the first conductive member 1 is connected to the upper end of the insulating sleeve 2. The second assembly comprises a second conductive piece 8, a standby lightning arrester 6 and an elastic piece 10, the upper end of the standby lightning arrester 6 is arranged inside the insulating sleeve 2, the lower end of the standby lightning arrester 6 is electrically connected with the lower end of the equipment lightning arrester 300 through the second conductive piece 8, the standby lightning arrester 6 can slide relatively in the insulating sleeve 2, so that the upper end of the standby lightning arrester 6 is selectively contacted with the first conductive piece 1, two ends of the elastic piece 10 are respectively connected with the insulating sleeve 2 and the second conductive piece 8, and the elastic piece 10 has a tendency of driving the insulating sleeve 2 to move towards the second conductive piece 8. Generally, in order to install the equipment arrester 300, a loading plate (not shown) is provided on the electric pole 200. In this embodiment, the second conductive member 8 is disposed below the bearing plate, the lower end of the equipment arrester 300 penetrates through the bearing plate to be connected to the second conductive member 8, and the first conductive member 1 and the second conductive member 8 are electrically connected to the upper end and the lower end of the equipment arrester 300, so as to support and fix the equipment arrester 300. In addition, the equipment lightning arrester 300 is easy to explode when being subjected to lightning current, when the equipment lightning arrester 300 explodes, the insulating sleeve 2 and the spare lightning arrester 6 are mutually pulled together under the action of the elastic component 10, the depth of the spare lightning arrester 6 inserted into the insulating sleeve 2 is increased, and the spare lightning arrester 6 is contacted with the first conductive component 1, so that the spare lightning arrester 6 is connected in parallel to a line, and the spare lightning arrester 6 replaces the equipment lightning arrester 300 to continuously provide protection for the line. In addition, due to the tendency that the elastic member 10 drives the insulating sleeve 2 to move towards the direction of the second conductive member 8, when the equipment arrester 300 explodes, the insulating sleeve 2 and the backup arrester 6 are mutually pulled, so that the lead on the equipment arrester 300 has a sufficient safety distance from the cross arm or the electric pole 200 to prevent the occurrence of ground fault, and the safety of the line is greatly improved.
The first conductive contact 4 is arranged on the first conductive piece 1 in a protruding mode, the first conductive contact 4 is located inside the insulating sleeve 2, when the elastic piece 10 pulls the standby lightning arrester 6 and the insulating sleeve 2 together, the upper end of the standby lightning arrester 6 is gradually close to the first conductive piece 1, the upper end of the standby lightning arrester 6 is electrically connected with the first conductive piece 1 through the first conductive contact 4, and the phenomenon that the standby lightning arrester 6 is in poor contact with the first conductive piece 1 is prevented.
In order to further improve the electrical connectivity of the spare arrester 6 with the first conductive member 1, a groove may be recessed in the upper end of the spare arrester 6 for receiving the first conductive contact 4.
Spare arrester 6 sets up and sets up piston 9 at the tip of insulating sleeve 2, and piston 9 and insulating sleeve 2's inside wall elastic connection, piston 9 adopt elastic material to make, make spare arrester 6 at insulating sleeve 2 inside steady motion under the pulling of elastic component 10 closes. It is understood that the piston 9 may cause a change in the air pressure inside the insulating sleeve 2 when moving inside the insulating sleeve 2, and in order to protect the air pressure inside the insulating sleeve 2 from being consistent with the external atmospheric pressure, a vent hole (not shown) is generally formed between the first conductive member 1 and the piston 9 of the insulating sleeve 2, or a vent hole is formed between the piston 9 and the inner side wall of the insulating sleeve 2.
In this embodiment, referring to fig. 2, the elastic member 10 has two elastic members 10, and the two elastic members 10 are respectively disposed on two opposite sides of the spare arrester 6. Specifically, the elastic member 10 is a tension spring. The elastic pieces 10 are arranged on two opposite sides of the standby lightning arrester 6, and the two elastic pieces 10 are used for balancing the tension force applied to the insulating sleeve 2, so that the phenomenon of unsmooth movement caused by uneven stress of the insulating sleeve 2 is prevented.
In another embodiment, the elastic member 10 is a cylindrical structure, and the elastic member 10 is sleeved on the periphery of the backup lightning arrester 6. The two ends of the elastic element 10 with the cylindrical structure are respectively connected with the insulating sleeve 2 and the second conductive element 8, so that the tensile force applied to the insulating sleeve 2 can be balanced.
Referring to fig. 5, in order to facilitate the installation of the equipment arrester 300 and the supporting device, both one end of the first conductive member 1 close to the equipment arrester 300 and one end of the second conductive member 8 close to the equipment arrester 300 have the push-in type spring clamp 3, and the push-in type spring clamp 3 is used for clamping the equipment arrester 300, and during the specific installation, the push-in type spring clamp 3 is tightly clamped to the upper end and the lower end of the standby arrester 6 through the insulating rod, so that the live installation of the supporting device is realized.
Wherein the second conductive member 8 is electrically connected to the lower end of the backup lightning conductor 6 through the second conductive contact 7. The second electrically conductive contact 7 is capable of providing a good electrical connection of the backup lightning conductor 6 to the second electrically conductive member 8. In this embodiment, the first conductive contact 4 and the second conductive contact 7 are both copper contacts, and copper is a common conductor in the power field, and has the characteristics of low resistance and low price.
Referring to fig. 2 to 4, it can be understood that the supporting device is generally used outdoors, the periphery of the insulating sleeve 2 is provided with the rain cover 5, and the rain cover 5 is used for blocking rainwater, so that the possibility of damaging the equipment arrester 300 and components inside the supporting device is reduced, and the service life of the equipment arrester 300 and the supporting device is prolonged. Wherein, rain-proof cover 5 is provided with a plurality ofly, and a plurality of rain-proof covers 5 distribute along insulating sleeve 2's axle center direction interval.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. A supporting device of an arrester is characterized by comprising a first assembly and a second assembly located below the first assembly, wherein the first assembly comprises a first conductive piece and an insulating sleeve, one end of the first conductive piece is electrically connected with the upper end of an equipment arrester, the other end of the first conductive piece is connected with the upper end of the insulating sleeve, the second assembly comprises a second conductive piece, a standby arrester and an elastic piece, the upper end of the standby arrester is arranged in the insulating sleeve, the lower end of the standby arrester is electrically connected with the lower end of the equipment arrester through the second conductive piece, the standby arrester can slide relatively in the insulating sleeve, the upper end of the standby arrester is selectively contacted with the first conductive piece, and the two ends of the elastic piece are respectively connected with the insulating sleeve and the second conductive piece, and the elastic piece has a tendency of driving the insulating sleeve to move towards the direction of the second conductive piece.
2. The supporting device of an arrester according to claim 1, wherein the first conductive member is provided with a first conductive contact protruding therefrom, and the first conductive contact is located inside the insulating sleeve.
3. The supporting device for lightning arrester according to claim 1, wherein the spare lightning arrester is provided with a piston at one end of the insulating sleeve, and the piston is elastically connected with the inner side wall of the insulating sleeve.
4. The supporting device for lightning arrester according to claim 1, characterized in that said elastic member has two, and two of said elastic members are respectively distributed on opposite sides of said spare lightning arrester.
5. The supporting device for lightning arrester according to claim 1, wherein the elastic member is a cylindrical structure, and the elastic member is sleeved on the outer periphery of the backup lightning arrester.
6. The arrester support apparatus of claim 1 wherein the first conductive member has a push-in spring clip at an end thereof adjacent to the equipment arrester and the second conductive member has a push-in spring clip at an end thereof adjacent to the equipment arrester, the push-in spring clips being configured to clamp the equipment arrester.
7. The supporting device of a surge arrester of claim 1 wherein the second conductive member is electrically connected to the lower end of the backup surge arrester through a second conductive contact.
8. The supporting device for an arrester according to claim 1, wherein a rain cover is provided on an outer periphery of the insulating sleeve.
9. The supporting device for the arrester according to claim 8, wherein the plurality of the rain-proof covers are provided, and the plurality of the rain-proof covers are spaced apart from each other in a direction of an axial center of the insulating sleeve.
10. The supporting device of a lightning arrester according to any one of claims 1 to 9, characterized in that the outer circumference of the insulating sleeve is coated with a thermochromic layer, which is a thermochromic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210392142.1A CN114709786B (en) | 2022-04-14 | 2022-04-14 | Supporting device of lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210392142.1A CN114709786B (en) | 2022-04-14 | 2022-04-14 | Supporting device of lightning arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114709786A true CN114709786A (en) | 2022-07-05 |
| CN114709786B CN114709786B (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210392142.1A Active CN114709786B (en) | 2022-04-14 | 2022-04-14 | Supporting device of lightning arrester |
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| Country | Link |
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| CN (1) | CN114709786B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940008715U (en) * | 1992-09-29 | 1994-04-21 | 금성기전 주식회사 | Arrester support device for electrical equipment |
| CN205376230U (en) * | 2015-12-15 | 2016-07-06 | 重庆重开电气有限公司 | Prepare and carry drop -out zinc oxide arrester with arrester |
| CN109786046A (en) * | 2018-12-27 | 2019-05-21 | 国网湖南省电力有限公司 | 500kV line thunder protection anti-ice-flashing composite insulator |
| CN109873411A (en) * | 2019-04-19 | 2019-06-11 | 国网福建省电力有限公司宁德供电公司 | A kind of intelligent line thunder protection device of self-healing and its lightening arresting method |
| CN209545117U (en) * | 2019-04-22 | 2019-10-25 | 徐潇 | A kind of Novel lightning arrester for power distribution network |
| CN112531465A (en) * | 2020-11-03 | 2021-03-19 | 国网河南省电力公司林州市供电公司 | Lightning arrester for power equipment |
-
2022
- 2022-04-14 CN CN202210392142.1A patent/CN114709786B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940008715U (en) * | 1992-09-29 | 1994-04-21 | 금성기전 주식회사 | Arrester support device for electrical equipment |
| CN205376230U (en) * | 2015-12-15 | 2016-07-06 | 重庆重开电气有限公司 | Prepare and carry drop -out zinc oxide arrester with arrester |
| CN109786046A (en) * | 2018-12-27 | 2019-05-21 | 国网湖南省电力有限公司 | 500kV line thunder protection anti-ice-flashing composite insulator |
| CN109873411A (en) * | 2019-04-19 | 2019-06-11 | 国网福建省电力有限公司宁德供电公司 | A kind of intelligent line thunder protection device of self-healing and its lightening arresting method |
| CN209545117U (en) * | 2019-04-22 | 2019-10-25 | 徐潇 | A kind of Novel lightning arrester for power distribution network |
| CN112531465A (en) * | 2020-11-03 | 2021-03-19 | 国网河南省电力公司林州市供电公司 | Lightning arrester for power equipment |
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|---|---|
| CN114709786B (en) | 2024-06-11 |
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