CN105896312A - Lightning protection apparatus of installing lightning attractor on same tower of overhead power distribution line in insulation mode - Google Patents
Lightning protection apparatus of installing lightning attractor on same tower of overhead power distribution line in insulation mode Download PDFInfo
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- CN105896312A CN105896312A CN201410650163.4A CN201410650163A CN105896312A CN 105896312 A CN105896312 A CN 105896312A CN 201410650163 A CN201410650163 A CN 201410650163A CN 105896312 A CN105896312 A CN 105896312A
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- lightning
- insulation
- tower
- lightning protection
- fixed mount
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- 238000009413 insulation Methods 0.000 title claims abstract description 53
- 238000009826 distribution Methods 0.000 title claims abstract description 18
- 239000012212 insulator Substances 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 4
- 229910052573 porcelain Inorganic materials 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 25
- 238000009792 diffusion process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005352 galvanomagnetic phenomena Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector 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
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Abstract
The invention relates to a lightning protection apparatus of installing a lightning attractor on a same tower of an overhead power distribution line in an insulation mode. The lightning protection apparatus comprises a field change discharger, an elevation rod, a fixing rack and an insulation support rack. The elevation rod is installed in the fixing rack. A top end of the elevation rod is fixedly installed with the field change discharger. An insulation support body is horizontally installed on a central section of the fixing rack below a ceramic support insulator. Two ends of the insulation support rack are connected to leads. An outer side of the fixing rack is provided with a vertical PVC insulation tube and the PVC insulation tube is connected to a grounding down lead. A bottom of the PVC insulation tube which is insulated with the fixing rack is fixedly connected to an independent grounding grid. The apparatus has advantages that the high-efficiency lightning attractor capable of forming an uplink lightning current is used; an insulation structure is used to carry out installation; the independent grounding down lead which keeps a certain insulation level with the tower and an independent ground grid are used to form two insulation gaps between the lightning attractor and a protected line which carries out routing on the same tower so as to discharge the lightning current, consume lightning current energy and reduce damages.
Description
Technical field
The present invention relates to a kind of lightning protection device, particularly relate to a kind of overhead distribution and draw thunder with tower insulating mounting
The lightning protection device of device.
Background technology
Lightning protection device is the general designation of outwardly and inwardly thunderstorm electricity protective device.Outside lightning protection device by arrester, draw
Roll off the production line and grounding device forms, mainly in order to the preventer of direct striking thunder prevention；Internal lighting protection device is by isoelectric level
Connection system, common grounding system, shielding harness, reasonable line arrangement system, Surge Protector etc. form, main
It is used for reducing and prevent lightning current produced galvanomagnetic-effect in needing anti-space.
Thundercloud refers to positive polarity or the cloud cluster of negative polarity electric charge.Its characteristic is cloud cluster along with air-flow is moving,
The electric charge carried on it also moves with cloud cluster, cloud cluster the electric charge gathered produces an electric field to ground；Cloud cluster
When ground level changes, electric field intensity can change；Electric field intensity above the arbitrary certain objects in ground is also
Can produce change along with the movement of cloud cluster, this ground electric field size is to be total to by cloud cluster electric field and space charge
With determining, say, that the space charge above ground object can distort the electric field above it.One with point
The object of end is in electric field, and due to tip, to cause the extreme of its front electric field uneven, when this electric field
When reaching 30kV/cm (under 1 atmospheric pressure of standard), air will be ionized；With thundercloud charge polarity phase
Anti-reversed polarity electric charge is pushed in the air, and like charges is then preferentially absorbed into object and enters ground or raise object at this
Relative potentials in electric field, the natural purpose of this electric discharge is to reduce the electric field intensity in most advanced and sophisticated front, i.e. reduces
Electric field energy storage, this is to meet minimum energy principle in nature.Most advanced and sophisticated front electric field drop to 30kV/cm with
Time lower, ionic discharge stops；It is discharged to aerial reversed polarity electric charge under the attraction of thundercloud electric field to thundercloud side
To motion, define the diffusion process of electric charge；After the diffusion of reversed polarity electric charge, most advanced and sophisticated front electric field rises, again
Ionic discharge occurs, and this electric discharge is known as corona discharge.
The diffusion of space charge is the warm-up movement process of a kind of gas molecule, and diffusion velocity is relatively slow, away from point
After end, owing to electric field intensity declines, diffusion velocity also can reduce.In DC electric field, if corona discharge
Continue for some time, a thicker reversed charge layer will be formed in the space above object；This electric charge
Layer can be strengthened the electric field intensity between charge layer and thundercloud and reduce the electric field intensity above pointed object, simultaneously
Also development path during thundercloud discharge is affected.
If all of for lightning-arrest device with electric discharge tip, will necessarily occur pre-in thundercloud electric field
First corona discharge, produces substantial amounts of reversed polarity space charge, occurs that thunderbolt rate is high and shielding angle is unstable
It is inevitable.Ordinary lightning rod is also to have certain protection effect, moves ratio under conditions of very fast at thundercloud,
Or air-ground wind speed is relatively big, reversed polarity space charge layer has little time to form the situation that can have a strong impact on discharge path
Under；Thundercloud is very strong, and in the case of can penetrating the stop of reversed polarity space charge layer, thundercloud just can impact
On higher discharging rod, form descending lightning current wave；But, some products propaganda can reach well protection
Effect, from the figure of its product, has the most sharp-pointed discharge tip, corona occurs in thundercloud electric field,
It is inevitable for producing substantial amounts of reversed polarity space charge, occurs that risk of shielding failure height is also inevitable, it is impossible to performance
Go out the effect stated in publicity.
Field change discharger ensures due to structure design, when thundercloud moves closer to, does not produce corona discharge,
Its overhead does not has reversed polarity space charge layer to weaken the electric field in discharger front.When space electric field strengthens to permissible
When making discharger action, the electric field that any electrical discharge arc of generation all can make discharger front is the most abnormal
Become, distort and the electric field that strengthens is again by the air ionization in electric arc front, finally produce and upwards developed by discharger
Up lightning current.
This case it is important to note that at present 10kV distribution overhead line is when suffering lightning ingress, meeting
A lot of serious accident occurs；Such as trip, break, equipment punctures, and the feature of distribution line is not allowed exactly
Xu Shoulei, either wire or pylon, by thunder it is possible to there is accident；Under many circumstances, it is impossible to enough
Individually tree tower carries out lightning protection, can only install with tower with circuit；Use protection device rightly, reasonably
Arrange lightning current enters path, ground；When occurring that super-high-current causes tower head current potential too high, effectively utilize combustion
Arc consumes thunder energy, and the damage capability reducing thunder and lightning is exactly the feature of this case device.Therefore, for
Upper aspect, needs effectively to innovate prior art.
Summary of the invention
For disadvantages described above, the present invention provides a kind of overhead distribution with the lightning protection of tower insulating mounting lightning lead-in
Device, its objective is to utilize efficiently, can be formed the lightning lead-in of up lightning current, uses insulation system to install,
Use the independent and down conductor of the tower certain dielectric level of holding and independent earth mat, at lightning lead-in and Tong Ta
Two clearance for insulations are formed between the protected circuit of cabling, release lightning current and consumption lightning current energy, subtract
Few destruction, to solve many deficiencies of prior art.
For achieving the above object, the present invention is by the following technical solutions:
A kind of overhead distribution, with the lightning protection device of tower insulating mounting lightning lead-in, becomes discharger, liter including field
High bar, fixed mount, insulating carriage, described fixed mount internally installed rising bar, this raises masthead end and fixes
Erecting bed becomes discharger and the two constitutes the porcelain support insulator for insulation for the first time；
An insulation support body it is horizontally mounted, in this insulation in the middle part of fixed mount below porcelain support insulator
Bracing frame two ends connect wire, so that insulation support body constitutes second time insulation between fixed mount and wire；
One vertical PVC insulation tube and this PVC insulation tube and grounding lead are set outside described fixed mount
Roll off the production line connection, fixing with bottom the PVC insulation tube of fixed mount insulation be connected independent grounding net；Described grounding lead
The employing PVC sheath that rolls off the production line insulate.
Correspondingly, efficient lightning lead-in must use the field that can produce up lightning current to become discharger, in order to reduces
With the amplitude controlling lightning current；Described porcelain support insulator by whole device and protected line insulation,
Down conductor is used as other single-phase insulated cable as downlead.
Overhead distribution of the present invention is with the beneficial effect of the lightning protection device of tower insulating mounting lightning lead-in
For:
(1) use the lightning protection device of insulation installation structure composition, its objective is to utilize efficiently, can be formed
The lightning lead-in of row lightning current, uses insulation system to install, and uses independent and the tower certain dielectric level of holding
Down conductor and independent earth mat, lightning lead-in and with the protected circuit of tower cabling between formed two insulation
Gap, release lightning current and consumption lightning current energy, reduce and destroy；
(2) this lightning protection device is when normally working, and can form up lightning current, the amplitude of lightning current can significantly under
Fall, when lightning current is dissipated by rising bar and grounded line and earth mat, the electricity formed on earth resistance
Pressure drop just ratio is relatively low, and this voltage will lean on the air of porcelain strut insulator to tolerate, and this insulation is first
Minor insulation；If voltage is the highest, by insulation breakdown for the first time, arcing phenomenon to be occurred, consume energy
Amount, also has the air insulation that an original insulator of circuit is formed between tower body and protected wire,
Become second time insulation；Thunder and lightning under let out time puncture for the first time insulation before, energy has been split, and hits
Consumed energy again when wearing arcing, if puncturing second time insulation, the most can not the knot of damaging property
Really, owing to the two insulation is all can to recover voluntarily after air insulation, lightning current, whole device can be anti-
Multiple use.
Accompanying drawing explanation
Below according to accompanying drawing, the present invention is described in further detail.
Fig. 1 is the lightning protection device with tower insulating mounting lightning lead-in of the overhead distribution described in the embodiment of the present invention
Structural representation；
Fig. 2 is overhead distribution described in the embodiment of the present invention with electric current during the action of tower insulating mounting lightning lead-in
Distribution schematic diagram.
In figure:
1, field becomes discharger；2, bar is raised；3, porcelain support insulator；4, fixed mount；5, insulation
Support body；6, down conductor；7, PVC insulation tube；8, independent grounding net；9, wire.
Detailed description of the invention
As shown in Figure 1-2, the overhead distribution described in the embodiment of the present invention is with tower insulating mounting lightning lead-in
Lightning protection device, becomes discharger 1 including field, raises bar 2, fixed mount 4, insulating carriage 5, described fixing
Frame 4 internally installed rising bar 2, this raises fixed installation field, bar 2 top and becomes discharger 1 and the two composition
Porcelain support insulator 3 for insulation for the first time；
Correspondingly, it is horizontally mounted an insulating supporting in the middle part of the fixed mount 4 below porcelain support insulator 3
Body 5, connects wire 9, thus the original insulation support body of circuit self 5 exists at these insulating carriage 5 two ends
Second time insulation is constituted between fixed mount 4 and wire 9；
Correspondingly, outside described fixed mount 4, a vertical PVC insulation tube 7 is set and this PVC is exhausted
Edge pipe 7 is connected with down conductor 6, and be connected fixing with bottom the PVC insulation tube 7 of tower body insulation independently connects
Earth mat 8.
Overhead distribution described in the above embodiment of the present invention with the lightning protection device of tower insulating mounting lightning lead-in,
Under the lightning current let out will flow to the earth according to main current channel, cause top if there is bigger electric current
Current potential is raised, and after can only first puncturing insulation for the first time, could threaten the insulation of circuit, through shunting and arcing
After energy expenditure, it is possible to ensure the safety of protected circuit.
The above-mentioned description to embodiment is for the ease of those skilled in the art it will be appreciated that and answer
Using this case technology, these examples obviously can be made various amendment by person skilled in the art easily, and
General Principle described herein is applied in other embodiments without through performing creative labour.Therefore,
This case is not limited to above example, and those skilled in the art, according to the announcement of this case, makes for this case
Improve and amendment all should be in the protection domain of this case.
Claims (4)
1. overhead distribution is with a lightning protection device for tower insulating mounting lightning lead-in, becomes discharger including field
(1), bar (2), fixed mount (4), insulating carriage (5) are raised, it is characterised in that:
Described fixed mount (4) internally installed rising bar (2), this raises fixed installation field, bar (2) top and becomes
Discharger (1) and the two composition are for the porcelain support insulator (3) insulated for the first time；
It is horizontally mounted an insulation support body at fixed mount (4) middle part of porcelain support insulator (3) lower section
(5), wire (9) is connected at this insulating carriage (5) two ends, so that insulation support body (5) is solid
Determine between frame (4) and wire (9), to constitute second time insulation；
Described fixed mount (4) outside arranges a vertical PVC insulation tube (7) and this PVC insulation
Pipe (7) is connected with down conductor (6), PVC insulation tube (7) bottom insulated with fixed mount (4)
Fixing connection independent grounding net (8)；Described down conductor (6) uses PVC sheath insulation.
Overhead distribution the most according to claim 1 with the lightning protection device of tower insulating mounting lightning lead-in,
It is characterized in that: efficiently lightning lead-in must use the field that can produce up lightning current to become discharger, in order to reduces
With the amplitude controlling lightning current.
Overhead distribution the most according to claim 1 with the lightning protection device of tower insulating mounting lightning lead-in,
It is characterized in that: described porcelain support insulator (3) is by whole device and protected line insulation.
Overhead distribution the most according to claim 1 with the lightning protection device of tower insulating mounting lightning lead-in,
It is characterized in that: described down conductor (6) is used as other single-phase insulated cable as downlead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410650163.4A CN105896312A (en) | 2014-11-17 | 2014-11-17 | Lightning protection apparatus of installing lightning attractor on same tower of overhead power distribution line in insulation mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410650163.4A CN105896312A (en) | 2014-11-17 | 2014-11-17 | Lightning protection apparatus of installing lightning attractor on same tower of overhead power distribution line in insulation mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896312A true CN105896312A (en) | 2016-08-24 |
Family
ID=56698432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410650163.4A Pending CN105896312A (en) | 2014-11-17 | 2014-11-17 | Lightning protection apparatus of installing lightning attractor on same tower of overhead power distribution line in insulation mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105896312A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736652A (en) * | 2020-12-21 | 2021-04-30 | 青岛海西重机有限责任公司 | Lightning rod combination device and crane comprising same |
| CN113488951A (en) * | 2021-06-24 | 2021-10-08 | 海南电网有限责任公司万宁供电局 | Lightning protection voltage limiting device for overhead line of power distribution network |
| WO2024067156A1 (en) * | 2022-09-29 | 2024-04-04 | 张健 | Lightning protection apparatus for high-tower electronic device |
-
2014
- 2014-11-17 CN CN201410650163.4A patent/CN105896312A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736652A (en) * | 2020-12-21 | 2021-04-30 | 青岛海西重机有限责任公司 | Lightning rod combination device and crane comprising same |
| CN113488951A (en) * | 2021-06-24 | 2021-10-08 | 海南电网有限责任公司万宁供电局 | Lightning protection voltage limiting device for overhead line of power distribution network |
| WO2024067156A1 (en) * | 2022-09-29 | 2024-04-04 | 张健 | Lightning protection apparatus for high-tower electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |
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| WD01 | Invention patent application deemed withdrawn after publication |