CN206023160U - Line flashover protector - Google Patents
Line flashover protector Download PDFInfo
- Publication number
- CN206023160U CN206023160U CN201621082215.3U CN201621082215U CN206023160U CN 206023160 U CN206023160 U CN 206023160U CN 201621082215 U CN201621082215 U CN 201621082215U CN 206023160 U CN206023160 U CN 206023160U
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- China
- Prior art keywords
- electric discharge
- arc protection
- device body
- protection device
- composite insulator
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- 230000001012 protector Effects 0.000 title claims abstract description 19
- 239000012212 insulator Substances 0.000 claims abstract description 43
- 239000000523 sample Substances 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 32
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010931 gold Substances 0.000 claims abstract description 14
- 229910052737 gold Inorganic materials 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Insulators (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
This utility model is related to line flashover protector; including the ring that discharges, composite insulator, electric discharge probe, isoelectric level gold utensil, arc protection device body and cross-arm; arc protection device body upper end is hung vertically on cross-arm; isoelectric level gold utensil is connected with arc protection device body; composite insulator is arranged on isoelectric level gold utensil; isolate with high-voltage connection when composite insulator realizes arc protection this running body of device; and composite insulator is provided with electric discharge probe and electric discharge ring, and the gap that discharges between probe and electric discharge ring is adjustable；Advantage of the present utility model:Isolate with high-voltage connection when realizing arc protection this running body of device by composite insulator; do not have leakage current to flow through arc protection device body when can guarantee that normal operation; improve the service life of arc protection device body; electric discharge probe and the setting of electric discharge ring; arc protection device body is made also not cause line-to-ground fault under damaging, it is ensured that the normal operation of circuit.
Description
Technical field
This utility model is related 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
Lightening hazard can be also produced, moreover, the lightning protection measures that distribution line can be taken are very limited, typically can not adopt to set up and take shelter from the thunder
The methods such as line, coupling ground wire, simply zinc oxide surge arresters protected.But spark gap is still only applicable to the line of distribution line
Side and the protection of controller switching equipment, it is impossible to installed on power distribution network in a large number, if whole distribution line is respectively mounted spark gap due to
Quantity is more, therefore necessarily causes high cost, investment big, operation maintenance difficulty, and spark gap 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 that thunder also occurred in lightning-caused breaking, bare conductor
Hit line-outage contingency, be struck by lightning the induced overvoltage for producing when distribution overhead line main harm, when induced overvoltage cause biphase
Or three-phase simultaneously flashover when can cause to trip；At present, the anti-lightning strike broken string measure that power distribution network is adopted, more using " dredging " side
Formula, such as stab-type arc-protection fitting, lightning protection pillar insulator etc., these technological means can reduce lightning-caused breaking accident, but be struck by lightning
Trip-out rate is higher.
Utility model content
The technical problems to be solved in the utility model is just to provide line flashover protector, solves existing transmission line of electricity and is subject to
The problem being struck by lightning.
In order to solve above-mentioned technical problem, this utility model is achieved through the following technical solutions：Line flashover is protected
Device, including the ring that discharges, composite insulator, electric discharge probe, isoelectric level gold utensil, arc protection device body and cross-arm, arc protection device
Body upper end is hung vertically on cross-arm, is connected with connecting wire between arc protection device body and cross-arm, and connecting wire is realized
Arc protection device body and cross-arm short circuit, isoelectric level gold utensil be connected with arc protection device body realize arc protection device body etc.
Current potential connects, and composite insulator is arranged on isoelectric level gold utensil, when composite insulator realizes arc protection this running body of device with high
The isolation of voltage lead wires, composite insulator are connected with high-voltage connection, and composite insulator is provided with electric discharge probe and electric discharge ring, electric discharge
Probe is arranged on the top of electric discharge ring, and the gap that discharges 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, improves the reliability of connection.
Preferably, discharge counter is provided with connecting wire, can realize recording quantity of being struck by lightning.
Preferably, screw rod is 1 with the diameter ratio of connecting wire:5～2:5, be conducive to the fixation of connecting wire, prevent from connecting
The damage of wire.
Preferably, electric discharge probe 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 between electric discharge probe and electric discharge ring is 150～170mm, adapts to different transmission lines of electricity.
Preferably, electric discharge probe is fixedly connected on composite insulator by waling stripe, and the probe that discharges connects in level
In downward-sloping setting on bar, connection is reliable, easy installation and removal, can realize discharging gap, and security performance is high.
Preferably, arrange in 30～60 ° of angles between electric discharge probe and waling stripe, 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, optimal discharging gap is reached.
In sum, advantage of the present utility model：1. when realizing arc protection this running body of device by composite insulator with
The isolation of high-voltage connection, does not have leakage current to flow through arc protection device body when can guarantee that normal operation, improves arc protection
The service life of device body, the setting of discharge probe and electric discharge ring, makes arc protection device body also not cause circuit to connect under damaging
Earth fault, 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 to discharge, and 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, outside arc protection device, electric discharge ring 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 localitiess, can be according to the circuit water of resistance to thunder
Flat situation carries out Insulation Coordination use, and arc protection device body itself has shock response speed fast, in the line radius of protection
Greatly, residual voltage is low；
3. realize that equipotential link, connection need not be done when installing by equipotential link gold utensil and arc protection device body
Grounding device and down conductor, simplify mounting structure；
4. arc protection device body is arranged in end vertical hanging on cross-arm, 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. will electric discharge probe and electric discharge ring between gap be arranged to adjustable, adapt to different line flashover protectors and
Different application scenarios, improves Practical Performance.
Description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings：
Structural representations of the Fig. 1 for this utility model line flashover protector；
Fig. 2 is the partial enlarged drawing of I in Fig. 1；
Built-in schematic diagrams of the Fig. 3 for 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 the ring 1 that discharges, composite insulator 2, electric discharge probe 3, isoelectric level
Gold utensil 4, arc protection device body 5 and cross-arm 6,5 upper end of arc protection device body are hung vertically on cross-arm 6, arc protection device
Connecting wire 7 is connected between body 5 and cross-arm 6, and connecting wire 7 is realized arc protection device body 5 and 6 short circuit of cross-arm, waits electricity
Position gold utensil 4 is connected with arc protection device body 5 and realizes the equipotential link of arc protection device body 5,4 surface heat of isoelectric level gold utensil
Zinc-plated process, composite insulator 2 are arranged on isoelectric level 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 are arranged on the top of electric discharge ring 1, and the gap that discharges 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, in connecting wire 7, be provided with discharge counter 9, 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 are 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
In downward-sloping setting on 11, connection is reliable, easy installation and removal, can realize discharging gap, and security performance is high, and discharge probe 3
Arrange in 30～60 ° of angles between waling stripe 11, adapt to different transmission lines of electricity, improve Practical Performance, 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
Between electric ring and electric discharge probe, the Secondary Control in gap, reaches optimal discharging gap.
Built-in schematic diagrams of the Fig. 3 for arc protection device body 5, when the Overvoltage Amplitude on wire 14 exceedes between upper figure ring pin
During 13 operation voltage of gap, the gap action of ring pin, the pulsed capacitance medium capacitive reactance of arc protection device body are very low, by the ripple of overvoltage
Head time and steepness are scabbled, and are reduced the moment impact ability and amplitude of overvoltage, are reduced 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 pulsed capacitance medium inside protector body
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 spark gap are 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, have the obvious cut-off point of isolation switch.
As shown in Fig. 4, Fig. 5, Fig. 6, Fig. 4 is to be not subject to be struck by lightning when circuit 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.
During use, isolated by composite insulator 2 with circuit during arc protection device 5 normal operation of body, do 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, 5 snap action of arc protection device body, arc protection device body pulsed capacitance are cut to thunder and lightning wave head
Ripple, reduces thunder and lightning amplitude, vises the flashover potential of composite insulator 2, protect composite insulator 2 that flashover does not occur.
In addition to above preferred embodiment, this utility model also has other embodiments, and those skilled in the art can be with root
It is variously modified according to this utility model and deforms, without departing from spirit of the present utility model, this utility model all should be belonged to
Scope defined in claims.
Claims (9)
1. line flashover protector, it is characterised in that：Including 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, isoelectric level gold utensil (4) are connected with arc protection device body (5) and realize arc protection device body
(5) equipotential link, composite insulator (2) are arranged on isoelectric level 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) is 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) are 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)
Enumerator (9).
4. line flashover protector according to claim 2, it is characterised in that：Screw rod (8) and the diameter of 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) passes through waling stripe
(11) it is fixedly connected on composite insulator (2), and the probe (3) that discharges is upper in downward-sloping setting in 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 |
|---|---|---|---|
| CN201621082215.3U CN206023160U (en) | 2016-09-27 | 2016-09-27 | Line flashover protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082215.3U CN206023160U (en) | 2016-09-27 | 2016-09-27 | Line flashover protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206023160U true CN206023160U (en) | 2017-03-15 |
Family
ID=58260560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621082215.3U Active CN206023160U (en) | 2016-09-27 | 2016-09-27 | Line flashover protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206023160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655067A (en) * | 2016-09-27 | 2017-05-10 | 国网浙江省电力公司丽水供电公司 | Line flashover protector |
-
2016
- 2016-09-27 CN CN201621082215.3U patent/CN206023160U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655067A (en) * | 2016-09-27 | 2017-05-10 | 国网浙江省电力公司丽水供电公司 | Line flashover protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |