CN205646435U - Built on stilts insulated wire prevents lightning -caused breaking device based on electrode implosion formula - Google Patents
Built on stilts insulated wire prevents lightning -caused breaking device based on electrode implosion formula Download PDFInfo
- Publication number
- CN205646435U CN205646435U CN201620395943.3U CN201620395943U CN205646435U CN 205646435 U CN205646435 U CN 205646435U CN 201620395943 U CN201620395943 U CN 201620395943U CN 205646435 U CN205646435 U CN 205646435U
- Authority
- CN
- China
- Prior art keywords
- electrode
- low
- built
- field electrode
- lightning
- 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.)
- Active
Links
- 241000272165 Charadriidae Species 0.000 title claims abstract 6
- 239000012212 insulator Substances 0.000 claims abstract description 31
- 239000002360 explosive Substances 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010891 electric arc Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000005474 detonation Methods 0.000 description 4
- 208000025274 Lightning injury Diseases 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 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 3
- 230000001629 suppression Effects 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
The utility model relates to a built on stilts insulated wire prevents lightning -caused breaking device based on electrode implosion formula, including sealing insulating boot, built on stilts insulated wire, post insulators and cross arm, leave air gap between the insulating sheath of its characterized in that on post insulators and cross arm, be provided with circular electrode in every the low -voltage electrode installing support of sheatheeing the installation in that insulates, be provided with the explosive between every circular electrode. When built on stilts insulated wire stands the lightning overvoltage, dredge lightning flash over passageway to insulator chain load side, through igniting the inside explosive of electrode, at tens of milliseconds of internal cutting off power frequency short circuiting arcs, reach the purpose that the degree of depth restraines built on stilts insulated wire lightning -caused breaking. Simple process, maneuverability is strong, and low cost, is applicable to extensive popularization and application.
Description
Technical field
This utility model belongs to electrical engineering field of distribution network, relates to high voltage electric equipment, especially a kind of based on
The overhead insulated conductor lightning protection of electrode implosive strikes off line apparatus.
Background technology
The further raising required power supply reliability along with power consumer, suspended insulated guide wire breaks because resisting external force
Bad strong, extensively use in field of distribution network without the advantage such as pollution flashover, icing flashover.Suspended insulated guide wire exists
Resist because its intrinsic characteristic seriously constrains its promoting the use of in weight minefield in lightning surge damage capability,
After suspended insulated guide wire occurs disruptive discharge over the ground because of thunderbolt, the discharge breakdown o'clock on wire insulation is tiny in one
Pin hole, pin hole is located proximate to line insulator both sides random distribution.After lightning impulse flashover, lasting power frequency is short
Road electric current can burn along the thunder discharge passage starting the arc, high-pressure side arc root all the time at pin hole, though by electromagnetic driven masterpiece
With but because of the stop of insulating barrier, be fixed on pin hole position and cannot move, this with use bare conductor overhead transmission line
Significantly different, after the latter's lightning stroke flashover, the power frequency continued flow starting the arc is burnt, and arc root can edge under electromagnetic power effect
The direction that conductive surface flows towards load current to move, until arc extinction, electric arc arc root will not be fixed on leads
On line a little at.
When thunderbolt causes circuit biphase or three relative ground circuits, a kind of situation is that relatively electric arc is formed by cross-arm
Alternate electric arc；Another kind of situation be relatively electric arc under electromagnetic power and thermal stress effect, arc ventrad insulator
The overhead drift of load side, aloft crosses and may develop into alternate electric arc, but arc root is fixed on all the time and bores a hole
Position.Phase fault current amplitude is up to a few kilo-ampere and rises to thousands of degrees Celsius to tens kilo-amperes, arc root temperature, add
Wire deadweight produce pulling force, heart yearn instant melting disconnect.Even if thunderbolt only causes insulated circuit single-phase over the ground
Short circuit, when power distribution network uses neutral point effective grounding mode, it is allowed to band singlephase earth fault runs a period of time,
Small area analysis electric arc long-time calcination wire same positions also can damage wire and cause broken string.
In sum, the basic reason causing suspended insulated guide wire to break is the electricity of the power frequency continued flow after lightning stroke flashover
Arc.At present, the lightning protection of suspended insulated guide wire mainly uses blocking type and leading-type method.But all have one
Fixed shortcoming:
(1) blocking type method is to strengthen line insulation, set up lightning conducter and install metal oxide arrester etc.
Method realizes, and engineering experience shows, blocking type lightening arresting method not only construction costs is high, lightning protection also poor effect；
(2) leading-type lightening arresting method realizes to install the measure such as arc-preventing metal utensil, electric discharge clamper insulator, its
Lightning stroke flashover probability, power frequency continued flow arc extinction characteristic is increased by the electric potential gradient reducing electric discharge flashover passage
Bad, cause its anti-lightning strike outage still to occupy Gao Bu little, seriously constrain suspended insulated guide wire pushing away in weight minefield
Wide use.
Utility model content
In place of the purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that one can be led at overhead insulating
When line stands lightning surge, dredge lightning flash over passage to insulator chain load side, play protection insulator chain
Overhead insulated conductor lightning protection based on electrode implosive from lightning impulse destruction strikes off line apparatus.
This utility model solves above-mentioned technical problem is that and takes techniques below scheme to realize:
A kind of overhead insulated conductor lightning protection based on electrode implosive strikes off line apparatus, including closing insulating boot, frame
Empty insulated conductor, support insulator and cross-arm, described closing insulating boot built-in suspended insulated guide wire adapter, institute
State suspended insulated guide wire and pass across the upper end of this suspended insulated guide wire adapter, described suspended insulated guide wire adapter
The coaxially connected described support insulator in lower end, connects high-field electrode in the lower right side of suspended insulated guide wire adapter；
Described cross-arm is arranged every sky with described closing insulating boot, suspended insulated guide wire, support insulator and high-field electrode,
This cross-arm is coaxially arranged with low-field electrode metal rack, described low-field electrode metal rack is coaxially fixedly mounted with
There is insulating sheath, between this insulating sheath and described support insulator, leave the air gap, at this insulating sheath
One side is fitted with three low-field electrode mounting brackets, is provided with a pair circle in each low-field electrode mounting bracket
Shape electrode, is provided with explosive between described each circular electrode.
And, the lower end of described high-field electrode is stretched out outside described closing insulating boot, extends to described support insulator
Side.
And, this low-field electrode metal rack has been arranged concentrically low-field electrode metal rack garter spring.
And, three described low-field electrode mounting brackets are spaced setting in same level
Advantage of the present utility model and having the beneficial effect that
1, device of the present utility model uses pure the air gap, makes full use of the preferable self restoring insulation of air special
Property, agent structure suspended insulated guide wire line pole type composite insulator, discharging gap earthing pole by three equipped with
The metal tube composition of specially good effect explosive.In laboratory conditions, discharge test is carried out, it is ensured that implosion electrode is installed
Discharge channel preferential discharge；Under the mal-condition such as filthy, moist, carry out discharge test, it is ensured that protection in parallel
Gap has the preferential discharge of certain probability；Under the conditions of standard lightning current waveform impacts, the electrode equipped with explosive can
By igniting, possess three times and cut off power frequency short circuiting arc suppression lightning-caused breaking function.
2, owing to the discharge channel discharge voltage being made up of implosion functional electrode is less than insulator chain discharge voltage,
If lightning surge exceedes discharge channel discharge voltage, discharge channel discharges, and forms flashover passage, protects absolutely
Edge substring, it is to avoid insulator surface ablation is even exploded.Flashover passage formed after under power-frequency voltage effect,
Power frequency short circuiting arc will be formed.This utility model device can the initial stage that flashover passage is formed by lightning surge or
Person's short circuiting arc initial stage electric current ignites electrode interior explosive, at several ms internal cutting off power frequency short circuiting arc, reaches
The purpose of degree of depth suppression Broken of Overhead Insulation Lines By Lightning.
3, this utility model processing technology is simple, workable, and installation method is simple, and construction intensity is less,
Can repeatedly stand lightening pulse electric discharge, there is use repeatly feature, can effectively cut off power frequency short circuiting arc passage,
Have and Broken of Overhead Insulation Lines By Lightning function is greatly reduced, and with low cost, it is adaptable to large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is A portion top plan view in Fig. 1.
Detailed description of the invention
Below by specific embodiment, the utility model is described in further detail, and following example are illustrative,
It not determinate, it is impossible to limit protection domain of the present utility model with this.
A kind of overhead insulated conductor lightning protection based on electrode implosive strikes off line apparatus, as it is shown in figure 1, include envelope
Close insulating boot 1, suspended insulated guide wire 3, support insulator 10 and cross-arm 7.The described built-in frame of closing insulating boot
Empty insulating conductor connector 2, described suspended insulated guide wire passes across the upper end of this suspended insulated guide wire adapter,
The coaxially connected described support insulator in described suspended insulated guide wire adapter lower end, at suspended insulated guide wire adapter
Lower right side connect high-field electrode 4, the lower end of this high-field electrode is stretched out outside described closing insulating boot, is extended to institute
State the side of support insulator.Described cross-arm and described closing insulating boot, suspended insulated guide wire, support insulator
And high-field electrode is arranged every sky, this cross-arm is coaxially arranged with low-field electrode metal rack 8, in this low tension
Low-field electrode metal rack garter spring 6 it has been arranged concentrically, on described low-field electrode metal rack on the metal rack of pole
Coaxially it is fixed with insulating sheath 9, between this insulating sheath and described support insulator, leaves the air gap.?
This insulating sheath one side is fitted with three low-field electrode mounting brackets 5, as in figure 2 it is shown, described three low
Piezoelectricity pole mounting bracket is spaced setting in same level, is provided with one in each low-field electrode mounting bracket
To circular electrode 11, between described each circular electrode, it is provided with explosive 12.
Utility model works principle:
This utility model constructs a kind of novel overhead insulated conductor lightning protection based on electrode implosive and strikes off line
, when suspended insulated guide wire suffers lightning surge, there is lightning surge impact in device, lightning wave ignites and props up
The electric arc that between post insulator and insulating sheath, the air gap produces, arc ignition is between a pair circular electrode
Explosive, explosive is after detonating in center, and detonation product drives electric arc to move to insulator wall, and compression arc makes
Extinguishing.During Gai, detonation product interacts with arc-plasma, and detonation product has shunted and impacted
The plasma arc of compression, causes conductance of arc to expand with detonation product and decline, finally extinguishes.
The discharge channel discharge voltage constituted owing to having implosion functional electrode is less than insulator chain discharge voltage, when
Lightning surge exceedes discharge channel discharge voltage, promotes discharge channel to discharge, and forms flashover passage, protects
Insulator chain, it is to avoid insulator surface ablation is even exploded.Flashover passage formed after under power-frequency voltage effect,
Power frequency short circuiting arc will be formed.The principle of this utility model device is exactly by thunder and lightning at the initial stage that flashover passage is formed
Shock wave or short circuiting arc initial stage electric current ignite electrode interior explosive, at several ms internal cutting off power frequency short circuit electricity
Arc, reaches the purpose of degree of depth suppression Broken of Overhead Insulation Lines By Lightning.
Claims (4)
1. overhead insulated conductor lightning protection based on electrode implosive strikes off a line apparatus, including close insulating boot,
Suspended insulated guide wire, support insulator and cross-arm, it is characterised in that: the described built-in overhead insulating of closing insulating boot
Conductor jointer, described suspended insulated guide wire passes across the upper end of this suspended insulated guide wire adapter, described built on stilts
The coaxially connected described support insulator in insulating conductor connector lower end, in the lower right side of suspended insulated guide wire adapter
Connect high-field electrode；Described cross-arm and described closing insulating boot, suspended insulated guide wire, support insulator and high pressure
Electrode is arranged every sky, is coaxially arranged with low-field electrode metal rack, at described low-field electrode metal on this cross-arm
Coaxially it is fixed with insulating sheath on support, between this insulating sheath and described support insulator, leaves the air gap,
It is fitted with three low-field electrode mounting brackets, in each low-field electrode mounting bracket at this insulating sheath one side
It is provided with a pair circular electrode, between described each circular electrode, is provided with explosive.
A kind of overhead insulated conductor lightning protection based on electrode implosive the most according to claim 1 strikes off line
Device, it is characterised in that: the lower end of described high-field electrode is stretched out outside described closing insulating boot, extends to described
The side of post insulator.
A kind of overhead insulated conductor lightning protection based on electrode implosive the most according to claim 1 strikes off line
Device, it is characterised in that: on this low-field electrode metal rack, it has been arranged concentrically low-field electrode metal rack garter spring.
A kind of overhead insulated conductor lightning protection based on electrode implosive the most according to claim 1 strikes off line
Device, it is characterised in that: three described low-field electrode mounting brackets are spaced setting in same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620395943.3U CN205646435U (en) | 2016-05-04 | 2016-05-04 | Built on stilts insulated wire prevents lightning -caused breaking device based on electrode implosion formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620395943.3U CN205646435U (en) | 2016-05-04 | 2016-05-04 | Built on stilts insulated wire prevents lightning -caused breaking device based on electrode implosion formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205646435U true CN205646435U (en) | 2016-10-12 |
Family
ID=57048811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620395943.3U Active CN205646435U (en) | 2016-05-04 | 2016-05-04 | Built on stilts insulated wire prevents lightning -caused breaking device based on electrode implosion formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205646435U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444687A (en) * | 2018-11-15 | 2019-03-08 | 国网山西省电力公司大同供电公司 | A kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform |
| CN112114225A (en) * | 2020-08-12 | 2020-12-22 | 国家电网有限公司 | Self-ignition type fault source peeping positioning device |
-
2016
- 2016-05-04 CN CN201620395943.3U patent/CN205646435U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444687A (en) * | 2018-11-15 | 2019-03-08 | 国网山西省电力公司大同供电公司 | A kind of 10kV power distribution network insulated conductor breakage caused by lightning stroke analogue test platform |
| CN109444687B (en) * | 2018-11-15 | 2020-11-06 | 国网山西省电力公司大同供电公司 | 10kV distribution network insulated conductor lightning stroke broken string simulation test platform |
| CN112114225A (en) * | 2020-08-12 | 2020-12-22 | 国家电网有限公司 | Self-ignition type fault source peeping positioning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102486954B (en) | Multi-interspace self-expanding strong-airflow arc extinguishing lightning protection device | |
| CN201075637Y (en) | Puncture type lightning protection equipment for preventing aerial insulated wire lightning stroke yarn cutting | |
| CN101697299B (en) | Lightning protection insulator for insulated conductor of overhead line | |
| CN101159368B (en) | Air blast arc-quenching lightning protection inter space device | |
| CN203386547U (en) | Integrated fixed external series gap self-disengaging metal oxide lightning arrester insulators | |
| CN104779522B (en) | A kind of thunder and lightning smoothing device with insulator function | |
| CN104361960B (en) | A kind of band can the parallel gap lightning protection device of swing arm electrode | |
| CN201478816U (en) | Air blowing and variable gap arc extinguishing lightning protection gap device | |
| CN110829183A (en) | Lightning arrester for power transmission line | |
| CN205646435U (en) | Built on stilts insulated wire prevents lightning -caused breaking device based on electrode implosion formula | |
| CN202093903U (en) | Constraint space injection air flow arc extinguishing lightning protection gap device | |
| CN202443809U (en) | Insulator for preventing lightning disconnection | |
| CN103337315B (en) | The device of the lightning protection inter space Insulation Coordination method based on Coulomb force striking | |
| CN109360697A (en) | The jet-stream wind arc extinguishing lightning protection device of dual triggering | |
| CN111293661B (en) | Bidirectional lightning protection disconnection protection method and device for insulated conductor | |
| CN202650738U (en) | Electric discharge clamping porcelain insulator | |
| CN201663021U (en) | Bidirectional lightning protection pillar insulator | |
| CN201163703Y (en) | Strong gas flow arc extinguishing lightning protection clearance apparatus | |
| CN202102814U (en) | Porcelain insulator for preventing insulated conductor breakage caused by lightning stroke | |
| CN202042294U (en) | Multi-gap self-expansion strong airflow arc extinction lightning-protection protecting device | |
| CN201243159Y (en) | Paracentesis type external clearance arrester | |
| CN203366872U (en) | An apparatus using a lightning protection gap insulation cooperation method based on Coulomb force arc ignition | |
| CN2912043Y (en) | Lightning stroke protector for overhead insulated wire | |
| CN101232163B (en) | Clearance lightning-proof protection method and apparatus thereof | |
| CN201514819U (en) | Lightning protection insulator for insulated conductor for overhead line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |