CN106655067A - Line flashover protector - Google Patents
Line flashover protector Download PDFInfo
- Publication number
- CN106655067A CN106655067A CN201610853869.XA CN201610853869A CN106655067A CN 106655067 A CN106655067 A CN 106655067A CN 201610853869 A CN201610853869 A CN 201610853869A CN 106655067 A CN106655067 A CN 106655067A
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- CN
- China
- Prior art keywords
- electric discharge
- device body
- protection device
- arc protection
- probe
- 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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Classifications
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- 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
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Abstract
The invention relates to a line flashover protector comprising a discharge ring, a composite insulator, a discharge probe, an equipotential fitting, a flashover protector body and a cross arm. The upper end of the flashover protector body is vertically suspended on the cross arm. The equipotential fitting is connected with the flashover protector body. The composite insulator is arranged on the equipotential fitting. The composite insulator realizes isolation from a high voltage lead in operation of the flashover protector body, and the discharge probe and the discharge ring are arranged on the composite insulator and the gap between the discharge probe and the discharge ring is adjustable. The advantages of the line flashover protector are that isolation from the high voltage lead in operation of the flashover protector body can be realized through the composite insulator so that leakage current is ensured not to flow through the flashover protector body in normal operation and the service life of the flashover protector body can be enhanced; and the the discharge probe and the discharge ring are arranged so that the line-to-ground fault is not generated even the flashover protector body is damaged and thus normal operation of the line can be guaranteed.
Description
Technical field
The present invention relates to line flashover protector.
Background technology
Generally than relatively low, not only direct lightning strike can work the mischief the dielectric level of distribution line, the overvoltage that induced lightening is produced
Also lightening hazard can be produced, moreover, the lightning protection measures that distribution line can be taken are very limited, typically can not be lightning-arrest using setting up
The methods such as line, coupling ground wire, simply zinc oxide surge arresters protected.But arrester is still only applicable to the line of distribution line
Side and the protection of controller switching equipment, it is impossible to install in a large number on power distribution network, if whole distribution line is respectively mounted arrester due to
Quantity is more, therefore necessarily causes high cost, investment big, operation maintenance difficulty, and arrester sheet is new in can be formed when damaging again
Trouble point, affect power distribution network reliability service, electric power in transportation, in the wild transport electric wire on can be struck by lightning, by
Have a large capacity and a wide range in distribution overhead line, tripping rate with lightning strike is high, insulated conductor has lightning-caused breaking, and thunder also occurred in bare conductor
Line-outage contingency is hit, the main harm of distribution overhead line during the induced overvoltage of generation of being struck by lightning, when induced overvoltage causes two-phase
Or three-phase simultaneously flashover when can cause tripping operation；At present, the anti-lightning strike broken string measure that power distribution network is adopted, it is more using " dredging " side
Formula, such as stab-type arc-protection fitting, lightning protection pillar insulator, these technological means can reduce lightning-caused breaking accident, but be struck by lightning
Trip-out rate is higher.
The content of the invention
The technical problem to be solved in the present invention is just to provide line flashover protector, solves existing transmission line of electricity and is subject to thunder
The problem hit.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions：Line flashover protector, bag
Electric discharge ring, composite insulator, electric discharge probe, equipotential gold utensil, arc protection device body and cross-arm are included, on arc protection device body
End is hung vertically on cross-arm, and connecting wire is connected between arc protection device body and cross-arm, and connecting wire realizes that flashover is protected
Shield device body and cross-arm short circuit, equipotential gold utensil is connected with arc protection device body and realizes that the equipotential of arc protection device body connects
Connect, composite insulator is arranged on equipotential gold utensil, when composite insulator realizes arc protection this running body of device and high-voltage connection
Isolation, composite insulator is connected with high-voltage connection, and composite insulator is provided with electric discharge probe and electric discharge ring, and electric discharge probe sets
Put in the top of electric discharge ring, and the gap discharged between probe and electric discharge ring is adjustable.
Preferably, arc protection device body is provided with screw rod, and connecting wire is connected with screw rod, is conducive to the peace of connecting wire
Dress, prevents connecting wire from loosening, and improves the reliability of connection.
Preferably, discharge counter is provided with connecting wire, can realizes recording quantity of being struck by lightning.
Preferably, screw rod and the diameter ratio of connecting wire are 1:5～2:5, be conducive to the fixation of connecting wire, prevent connection
The damage of wire.
Preferably, the probe that discharges is arranged on composite insulator, and electric discharge ring is movably connected in composite insulator by nut
On, nut is easy to adjust, and the high precision for adjusting, it is ensured that security performance.
Preferably, the gap discharged between probe and electric discharge ring is 150～170mm, adapts to different transmission lines of electricity.
Preferably, the probe that discharges is fixedly connected on composite insulator by waling stripe, and the probe that discharges connects in level
It is in downward-sloping setting on bar, connection is reliable, easy installation and removal, discharging gap can be realized, security performance is high.
Preferably, discharge between probe and waling stripe and arranged in 30～60 ° of angles, adapt to different transmission lines of electricity,
Improve Practical Performance.
Preferably, nut is provided with adapter sleeve, and adapter sleeve is threaded connection with nut, and electric discharge ring is arranged on adapter sleeve
On, the Secondary Control in gap between electric discharge ring and electric discharge probe can be realized, reach optimal discharging gap.
In sum, advantages of the present invention：1. when realizing arc protection this running body of device by composite insulator and high pressure
The isolation of lead, does not have leakage current to flow through arc protection device body when can guarantee that normal operation, improves arc protection device sheet
The service life of body, the setting of discharge probe and electric discharge ring, makes arc protection device body also not cause line-to-ground event under damaging
Barrier, it is ensured that the normal operation of circuit；
2., according to the operation principle of arc protection device body, when circuit Lightning Over-voltage reaches ball gap threshold voltage, put
Electric ring and electric discharge probe start electric discharge, cause the rapid action of arc protection device body, and line over-voltage pincers are not dodged to insulator
In the voltage range of network, after line over-voltage disappears, the ring that discharges outside arc protection device returns to original state, and system is normally transported
OK, tripping rate with lightning strike is low, and arc protection device body universal performance is strong, can be used on high altitude localities, can be according to the circuit water of resistance to thunder
Flat situation carries out Insulation Coordination and uses, and arc protection device body itself has shock response speed fast, in the line radius of protection
Greatly, residual voltage is low；
3. equipotential link is realized by equipotential link gold utensil and arc protection device body, connection need not be done when installing
Earthing or grounding means and down conductor, simplify mounting structure；
4. arc protection device body is arranged on cross-arm in end vertical hanging, it is ensured that arc protection device body does not receive water
Horizontal stress affects, and easy installation and removal is easy to maintenance；
5. the gap between electric discharge probe and electric discharge ring is arranged to into adjustable, adapt to different line flashover protector and
Different application scenarios, improves Practical Performance.
Description of the drawings
Below in conjunction with the accompanying drawings the invention will be further described：
Fig. 1 is the structural representation of line flashover protector of the present invention；
Fig. 2 is the partial enlarged drawing of I in Fig. 1；
Fig. 3 is the built-in schematic diagram of arc protection device body；
Fig. 4 is not subject to waveform during Lightning Over-voltage for circuit；
Waveform when Fig. 5 is struck by lightning for circuit；
Fig. 6 is waveform of the thunder and lightning after arc protection device.
Specific embodiment
As shown in Figure 1 and Figure 2, line flashover protector, including electric discharge ring 1, composite insulator 2, electric discharge probe 3, equipotential
Gold utensil 4, arc protection device body 5 and cross-arm 6, the upper end of arc protection device body 5 is hung vertically on cross-arm 6, arc protection device
Connecting wire 7 is connected between body 5 and cross-arm 6, connecting wire 7 realizes arc protection device body 5 and the short circuit of cross-arm 6, waits electricity
Position gold utensil 4 is connected with arc protection device body 5 and realizes the equipotential link of arc protection device body 5, the surface heat of equipotential gold utensil 4
Zinc-plated process, composite insulator 2 is arranged on equipotential gold utensil 4, when composite insulator 2 realizes that arc protection device body 5 runs
With isolating for high-voltage connection, composite insulator 2 is connected with high-voltage connection, and composite insulator 2 is provided with electric discharge probe 3 and electric discharge
Ring 1, the probe 3 that discharges is arranged on the top of electric discharge ring 1, and the gap discharged between probe 3 and electric discharge ring 1 is adjustable.
Arc protection device body 5 is provided with screw rod 8, and connecting wire 7 is connected with screw rod 8, is conducive to the installation of connecting wire,
Prevent connecting wire from loosening, improve the reliability of connection, discharge counter 9 is provided with connecting wire 7, can realize to the number that is struck by lightning
Amount is recorded, and screw rod 8 is 1 with the diameter ratio of connecting wire 7:5～2:5, be conducive to the fixation of connecting wire, prevent connection from leading
The damage of line, electric discharge probe 3 is arranged on composite insulator 2, and electric discharge ring 1 is movably connected in composite insulator 2 by nut 10
On, nut is easy to adjust, and the high precision for adjusting, it is ensured that security performance, and the gap between probe 3 and electric discharge ring 1 of discharging is 150
～170mm, adapts to different transmission lines of electricity.
Electric discharge probe 3 is fixedly connected on composite insulator 2 by waling stripe 11, and the probe 3 that discharges is in waling stripe
It is in downward-sloping setting on 11, connection is reliable, easy installation and removal, discharging gap can be realized, security performance is high, discharges probe 3
Arrange in 30～60 ° of angles between waling stripe 11, adapt to different transmission lines of electricity, Practical Performance is improved, on nut 10
Adapter sleeve 12 is provided with, and adapter sleeve 12 is threaded connection with nut 10, electric discharge ring 1 is arranged on adapter sleeve 12, can realize putting
The Secondary Control in gap, reaches optimal discharging gap between electric ring and electric discharge probe.
Fig. 3 is the built-in schematic diagram of arc protection device body 5, when the Overvoltage Amplitude on wire 14 exceedes between upper figure ring pin
During 13 operation voltage of gap, ring pin gap action, the pulsed capacitance medium capacitive reactance of arc protection device body is very low, by the ripple of overvoltage
Head time and steepness are scabbled, and reduce the moment impact ability and amplitude of overvoltage, reduce this amplitude, and overvoltage would not be right
Insulator causes flashover, has vised the flashover potential of insulator, and flashover circuit would not trip insulator, arc protection device sheet
The principle of body is the principle of Insulation Coordination in High-Voltage Technology；Arc protection device body dielectric level is always lower than the resistance to of insulator
Thunder level.
The operation principle of arc protection device body is to vise insulator by protector body the inside pulsed capacitance medium
Flashover potential, that is, come " slicing " and vise the flashover potential of insulation by the high frequency characteristics of pulsed capacitance, protect insulator not
Generation flashover, the advantage maximum compared with arrester is not need down conductor and grounding body, even if damage also not interfering with line
There is ground connection power outage in road, because arc protection device body has ring pin gap to isolate with wire, after arc protection body is damaged
Automatically can separate with wire, there is the obvious cut-off point of isolation switch.
As shown in Fig. 4, Fig. 5, Fig. 6, Fig. 4 is when circuit is not subject to be struck by lightning to the lightning protection principle of arc protection device body 5
Waveform during voltage, is the sine wave of a standard；Fig. 5 is the waveform when circuit is struck by lightning, and sine wave is done by thunder and lightning
Disturb and there occurs deformation, the wave head of thunder and lightning has been raised to peak value in several microseconds to interior, and the Overvoltage Amplitude for now producing is high, when this
Voltage magnitude will occur flashover or puncture when having exceeded the impulse flashover voltage of insulator chain；Fig. 6 is that thunder and lightning is protected through flashover
After shield device body, by thunder and lightning amplitude, the thunder and lightning wave head of high steepness has carried out " slicing " slicing to be meaned to reduce thunder and lightning wave head
Amplitude and steepness.When thunder and lightning amplitude is less than the flashover voltage of the insulator amplitude, insulator i.e. will not flashover.
When using, arc protection device body 5 is isolated with circuit when normally running by composite insulator 2, is not had at ordinary times
There is leakage current to flow through arc protection device body 5, when line over-voltage reaches protector threshold voltage, electric discharge probe 3 is detected
During to line over-voltage, the snap action of arc protection device body 5, arc protection device body pulsed capacitance is cut to thunder and lightning wave head
Ripple, reduces thunder and lightning amplitude, vises the flashover potential of composite insulator 2, protects composite insulator 2 that flashover does not occur.
In addition to above preferred embodiment, the present invention also has other embodiments, and those skilled in the art can be according to this
Invention is variously modified and deforms, and without departing from the spirit of the present invention, all should belong to claims of the present invention and determine
The scope of justice.
Claims (9)
1. line flashover protector, it is characterised in that：Including electric discharge ring (1), composite insulator (2), electric discharge probe (3), etc. electricity
Position gold utensil (4), arc protection device body (5) and cross-arm (6), arc protection device body (5) upper end is hung vertically in cross-arm (6)
On, connecting wire (7) is connected between arc protection device body (5) and cross-arm (6), connecting wire (7) realizes arc protection device
Body (5) and cross-arm (6) short circuit, equipotential gold utensil (4) is connected with arc protection device body (5) and realizes arc protection device body
(5) equipotential link, composite insulator (2) is arranged on equipotential gold utensil (4), and composite insulator (2) realizes arc protection
Isolate with high-voltage connection when device body (5) runs, composite insulator (2) is connected with high-voltage connection, and on composite insulator (2)
Electric discharge probe (3) and electric discharge ring (1) are provided with, the probe (3) that discharges is arranged on the top of electric discharge ring (1), and electric discharge probe and is put at (3)
Gap between electric ring (1) is adjustable.
2. line flashover protector according to claim 1, it is characterised in that：Arc protection device body (5) is provided with spiral shell
Bar (8), connecting wire (7) is connected with screw rod (8).
3. line flashover protector according to claim 1 and 2, it is characterised in that：Connecting wire is provided with electric discharge on (7)
Counter (9).
4. line flashover protector according to claim 2, it is characterised in that：The diameter of screw rod (8) and connecting wire (7)
Than for 1:5～2:5.
5. line flashover protector according to claim 3, it is characterised in that：Electric discharge probe (3) is arranged on compound inslation
On sub (2), electric discharge ring (1) is movably connected on composite insulator (2) by nut (10).
6. line flashover protector according to claim 5, it is characterised in that：Between electric discharge probe (3) and electric discharge ring (1)
Gap be 150～170mm.
7. line flashover protector according to claim 5, it is characterised in that：Electric discharge probe (3) is by waling stripe
(11) it is fixedly connected on composite insulator (2), and the probe (3) that discharges is in downward-sloping setting on waling stripe (11).
8. line flashover protector according to claim 7, it is characterised in that：Electric discharge probe (3) and waling stripe (11)
Between arrange in 30～60 ° of angles.
9. line flashover protector according to claim 5, it is characterised in that：Nut (10) is provided with adapter sleeve (12),
And adapter sleeve (12) is threaded connection with nut (10), electric discharge ring (1) is arranged on adapter sleeve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853869.XA CN106655067A (en) | 2016-09-27 | 2016-09-27 | Line flashover protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853869.XA CN106655067A (en) | 2016-09-27 | 2016-09-27 | Line flashover protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106655067A true CN106655067A (en) | 2017-05-10 |
Family
ID=58853249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610853869.XA Pending CN106655067A (en) | 2016-09-27 | 2016-09-27 | Line flashover protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106655067A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512188A (en) * | 2018-04-06 | 2018-09-07 | 盐城同舟电气有限公司 | A kind of anti-flashover auxiliary tool of electric device |
| CN114243619A (en) * | 2021-11-11 | 2022-03-25 | 国网浙江省电力有限公司温州市洞头区供电公司 | Lightning flashover protection device for island |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438213Y (en) * | 2000-09-08 | 2001-07-04 | 北京中能瑞斯特电气有限责任公司 | Composite insulation zinc oxide arrester for lightning protection of line |
| CN201171150Y (en) * | 2007-12-30 | 2008-12-24 | 山东迅实电气有限公司 | Overvoltage protector for open-resistant lever for avoiding wire from breaking due to lightning stroke |
| CN202121283U (en) * | 2011-06-29 | 2012-01-18 | 湖北省电力公司电力试验研究院 | 35kV power transmission line tension support lightning stroke protective device |
| CN203260987U (en) * | 2013-04-22 | 2013-10-30 | 浙江嘉凯电气有限公司 | High-voltage line lightning arrester |
| CN103812010A (en) * | 2014-03-12 | 2014-05-21 | 陈勃闻 | Two-stage series gap lightning flashover protector with discharge counter |
| CN205283062U (en) * | 2015-12-03 | 2016-06-01 | 重庆智寰传动科技发展有限公司 | 35kV overhead line thunderbolt flashover protector |
| CN205508543U (en) * | 2016-01-27 | 2016-08-24 | 安徽京卓电气有限公司 | Strain insulator pole series connection arrester device |
| CN206023160U (en) * | 2016-09-27 | 2017-03-15 | 国网浙江省电力公司丽水供电公司 | Line flashover protector |
-
2016
- 2016-09-27 CN CN201610853869.XA patent/CN106655067A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438213Y (en) * | 2000-09-08 | 2001-07-04 | 北京中能瑞斯特电气有限责任公司 | Composite insulation zinc oxide arrester for lightning protection of line |
| CN201171150Y (en) * | 2007-12-30 | 2008-12-24 | 山东迅实电气有限公司 | Overvoltage protector for open-resistant lever for avoiding wire from breaking due to lightning stroke |
| CN202121283U (en) * | 2011-06-29 | 2012-01-18 | 湖北省电力公司电力试验研究院 | 35kV power transmission line tension support lightning stroke protective device |
| CN203260987U (en) * | 2013-04-22 | 2013-10-30 | 浙江嘉凯电气有限公司 | High-voltage line lightning arrester |
| CN103812010A (en) * | 2014-03-12 | 2014-05-21 | 陈勃闻 | Two-stage series gap lightning flashover protector with discharge counter |
| CN205283062U (en) * | 2015-12-03 | 2016-06-01 | 重庆智寰传动科技发展有限公司 | 35kV overhead line thunderbolt flashover protector |
| CN205508543U (en) * | 2016-01-27 | 2016-08-24 | 安徽京卓电气有限公司 | Strain insulator pole series connection arrester device |
| CN206023160U (en) * | 2016-09-27 | 2017-03-15 | 国网浙江省电力公司丽水供电公司 | Line flashover protector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512188A (en) * | 2018-04-06 | 2018-09-07 | 盐城同舟电气有限公司 | A kind of anti-flashover auxiliary tool of electric device |
| CN114243619A (en) * | 2021-11-11 | 2022-03-25 | 国网浙江省电力有限公司温州市洞头区供电公司 | Lightning flashover protection device for island |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |