CN105845289A - Device for suppressing lightning trip-out rate by stretching discharge flashover path through lightning pulse - Google Patents
Device for suppressing lightning trip-out rate by stretching discharge flashover path through lightning pulse Download PDFInfo
- Publication number
- CN105845289A CN105845289A CN201610289868.7A CN201610289868A CN105845289A CN 105845289 A CN105845289 A CN 105845289A CN 201610289868 A CN201610289868 A CN 201610289868A CN 105845289 A CN105845289 A CN 105845289A
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- China
- Prior art keywords
- induction coil
- portable protective
- protective gaps
- electrode
- lightning
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- 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
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
Abstract
The invention relates to a device for suppressing lightning trip-out rate by stretching a discharge flashover path through lightning pulse. The device is composed of a tower cross arm, an insulator chain and a protective gap mechanism. The protective gap mechanism is composed of an iron core, a rotating bearing metal shielding cover, an electromagnetic induction coil, an induction coil balance strong positioning magnet and an air gap. A flashover path is formed between lightning overvoltage protective gap upper and lower electrodes through discharging and then the flashover path is stretched by electromagnetic power generated by the lightning pulse so that the channel potential gradient can be reduced and thus the lightning trip-out rate can be suppressed. The device is simple in manufacturing technology, convenient to install, high in operability and low in cost and can stand lightning pulse discharge for multiple times and has the characteristic of repeated use so that the device is suitable for large-scale popularization and application.
Description
Technical field
The invention belongs to project of transmitting and converting electricity field, relate to the transmission line of electricity system failure, especially one and utilize thunder and lightning
The device of electric discharge flashover path suppression tripping rate with lightning strike is elongated in pulse.
Background technology
In power system project of transmitting and converting electricity, transmission line of electricity suffers thunderbolt to belong to multiple incidents.When thunder and lightning is the most electric
Pressure will cause insulator chain electric discharge flashover when exceeding insulator chain discharge voltage, if flashover passage develops into stable electricity
Arc will result in relay protection action in tripping operation, avoids causing danger with protection circuit.
Tripping rate with lightning strike occupy first of power system all kinds of fault trip rate, tripping rate with lightning strike higher serious threat electricity
Force system safety and reliable power supply, that suppresses tripping rate with lightning strike it is critical only that reduction flashover passage develops into stable electricity
The probability of arc；It is closely related with flashover path length that flashover passage develops into stable electric arc, elongates flashover path energy
Tripping rate with lightning strike is greatly lowered.Therefore a kind of device of tripping rate with lightning strike that can reduce is developed for ensureing power train
System safety and guarantee reliable power supply tool are of great significance.
Summary of the invention
It is an object of the invention to provide a kind of lightning surge and form sudden strain of a muscle at portable protective gaps power-on and power-off interpolar discharge
After network passage, the electromagnetic power utilizing lightening pulse to produce elongates flashover path, reduces channeling potential gradient, reaches
Device to suppression tripping rate with lightning strike purpose.
The present invention solves above-mentioned technical problem is that and takes techniques below scheme to realize:
A kind of utilize lightening pulse elongate electric discharge flashover path suppression tripping rate with lightning strike device, by cross arm of tower,
Insulator chain and portable protective gaps mechanism composition, the upper end of described insulator chain is by the fixing gold of electrode on portable protective gaps
Tool is suspended on described cross arm of tower, and the lower end of described insulator chain connects portable protective gaps bottom electrode and fixes gold utensil,
Described portable protective gaps mechanism is arranged on electrode on described portable protective gaps and fixes gold utensil and portable protective gaps bottom electrode is fixed
Between gold utensil.
And, described portable protective gaps mechanism includes insulating support, metal bracket, iron core, rolling bearing metal
Radome, electromagnetic induction coil, induction coil balance strength phase magnet and the air gap composition, described insulation
Pedestal upper end be welded on that upper electrode metal part that electrode on described portable protective gaps fixes on gold utensil is fixing to be connected,
Described insulating support lower end is provided with described iron core, and described metal bracket is arranged on described insulating support, at this
Induction coil balance strength phase magnet insulating support, described induction coil balance strength it is provided with on metallic support
Phase magnet is arranged on this induction coil balance strength phase magnet insulating support.
And, described rolling bearing metallic shield is made up of rolling bearing and two metallic shields, described turn
Dynamic bearing is centrally disposed, and the two ends of this rolling bearing are symmetrically arranged with left metallic shield and right metallic shield,
Upper electrode insulated part is fixed on the two ends of this rolling bearing, and described left metallic shield connects upper electrode metal portion
Point, described right metallic shield connects described upper electrode insulated part, the upper end open of this right metallic shield half
Footpath is more than the radius of described upper electrode insulated part, freely rotatable to ensure.
And, the right side of described upper electrode insulated part connects described electromagnetic induction coil, this electromagnetic induction coil
Inside being symmetrically arranged with induction coil balance iron block, the other end of described electromagnetic induction coil passes through upper electrode metal
Part connects with being connected carbon brush, is provided with metal ball on this connection carbon brush.
And, insulated conductor one end connects described upper electrode metal part, is wrapped over described iron core, through described
Metal bracket is connected with described metal ball, and from the portable protective gaps that described metal ball is drawn, electrode connects described air
One end, gap, the other end of this air gap connects portable protective gaps bottom electrode, and this portable protective gaps bottom electrode is connected to
Described portable protective gaps bottom electrode is fixed on gold utensil, and described portable protective gaps bottom electrode is fixed the lower end of gold utensil and drawn wire.
And, described induction coil balance strength phase magnet hangs down in two pieces of described induction coil balance iron blocks
On line, and with the distance at two pieces of described induction coil balance iron block midpoints more than the width of described electromagnetic induction coil
Degree.
And, described apparatus main body structure uses φ 14 galvanized steel bar and epoxy resins insulation rod, coupling part
Fix with φ 14 expansion bolt.
And, on described portable protective gaps, the distance between electrode and portable protective gaps bottom electrode is described insulator chain
85%,Will insulator chain short circuit 15%.
Advantages of the present invention and having the beneficial effect that
1, the present invention is installed in parallel portable protective gaps mechanism at the two ends of insulator chain, and ensures that correct insulation is joined
Close, in laboratory conditions, carry out discharge test, it is ensured that portable protective gaps preferential discharge in parallel；Filthy, damp
Under wet mal-condition such as grade, carry out discharge test, it is ensured that portable protective gaps in parallel has certain preference for probability electric discharge.Logical
Flashover is elongated in the setting crossing electromagnetic induction coil, induction coil balance strength phase magnet and the air gap effectively
Path, it is to avoid flashover passage develops into stable electric arc, reduces flashover passage and develops into the probability of stable electric arc, greatly
Amplitude reduction tripping rate with lightning strike, it is ensured that the stability of power supply.
2, the present invention constructs a kind of novel portable protective gaps in parallel with elongation insulator arc-over path, and
Connection portable protective gaps upper/lower electrode spacing be insulator chain 85% (Will insulator chain short
Connect 15%), when lightning surge puts on insulator chain two ends, owing to portable protective gaps discharge voltage in parallel is low
In insulator chain, the portable protective gaps electric discharge when lightning surge exceedes gap discharge voltage, form flashover passage,
It is effectively protected insulator chain, it is to avoid insulator surface ablation is even exploded.
3, after flashover passage is formed under power-frequency voltage effect, power frequency short circuiting arc, initiating system event will be formed
Barrier.Flashover passage forms probability and channeling potential gradient (the power-frequency voltage Amplitude Ration clearance gap of power frequency short circuiting arc
From) positive correlation.Assembly of the invention forms flashover passage at atmospheric over voltage protection gap power-on and power-off interpolar discharge
After, the electromagnetic power utilizing lightening pulse to produce elongates flashover path, reduces channeling potential gradient, and then suppression
Tripping rate with lightning strike.
4, manufacture craft of the present invention is simple, easy for installation, workable, with low cost, can repeatedly stand
Lightening pulse discharges, and has the advantages that repeatedly use, can effectively elongate thunder discharge flashover passage, have
The function of tripping rate with lightning strike is greatly reduced, it is adaptable to large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, and following example are illustrative, no
It is determinate, it is impossible to limit protection scope of the present invention with this.
A kind of utilize lightening pulse elongate electric discharge flashover path suppression tripping rate with lightning strike device, by cross arm of tower 1,
Insulator chain 22 (different electric pressure sheet numbers are different) and portable protective gaps mechanism composition, described insulator chain
Upper end is fixed gold utensil 2 by electrode on portable protective gaps and is suspended on described cross arm of tower, under described insulator chain
End connects portable protective gaps bottom electrode and fixes gold utensil 20；Described portable protective gaps mechanism is arranged on described portable protective gaps
Electrode fixes gold utensil and portable protective gaps bottom electrode is fixed between gold utensil.
Described portable protective gaps mechanism includes insulating support 7, metal bracket 16, iron core 17, rolling bearing gold
Belong to radome 5, electromagnetic induction coil 9, induction coil balance strength phase magnet 14 and 18 groups, the air gap
Become.Described insulating support upper end be welded on the upper electrode metal portion that electrode on described portable protective gaps is fixed on gold utensil
Points 4 fixing connect, and described insulating support lower end is provided with described iron core, described metal bracket be arranged on described absolutely
On edge support, this metallic support is provided with induction coil balance strength phase magnet insulating support 15, institute
State induction coil balance strength phase magnet to be arranged on this induction coil balance strength phase magnet insulating support.
Described rolling bearing metallic shield is made up of rolling bearing and two metallic shields, described rolling bearing
Centrally disposed, the two ends of this rolling bearing are symmetrically arranged with left metallic shield and right metallic shield, in institute
Stating the fixing upper electrode insulated part 6 in two ends of rolling bearing, described left metallic shield connects upper electrode metal portion
Point, described right metallic shield connects described upper electrode insulated part, the upper end open of this right metallic shield half
Footpath is more than the radius of described upper electrode insulated part, freely rotatable to guarantee.
The right side of described upper electrode insulated part connects described electromagnetic induction coil, symmetrical in this electromagnetic induction coil
It is provided with induction coil balance iron block 8.The other end of described electromagnetic induction coil passes through upper electrode metal part
10 connect with being connected carbon brush 12, are provided with metal ball 11 on this connection carbon brush.
Insulated conductor 3 one end connects described upper electrode metal part, is wrapped over described iron core, through described metal
Bracket is connected with described metal ball.From the portable protective gaps that described metal ball is drawn, electrode 13 connects described air
One end, gap, the other end of this air gap connects portable protective gaps bottom electrode 19, and this portable protective gaps bottom electrode is even
Being connected to described portable protective gaps bottom electrode and fix on gold utensil, described portable protective gaps bottom electrode is fixed the lower end of gold utensil and is drawn
Wire 21.
Described induction coil balance strength phase magnet on two pieces of described induction coil balance iron block perpendicular bisectors,
And with the distance at two pieces of described induction coil balance iron block midpoints more than the width of described electromagnetic induction coil.
Described apparatus main body structure uses φ 14 galvanized steel bar and epoxy resins insulation rod, coupling part φ 14
Expansion bolt is fixed.
On described portable protective gaps between electrode and portable protective gaps bottom electrode distance is described insulator chain 85%,Will insulator chain short circuit 15%
The operation principle of the present invention:
When there is thunder and lightning thunderbolt lightning conducter or shaft tower, lightening pulse flows through following approach, completes cross-arm to wire
Discharge process；
1→2→4→3→16→12→11→10→18→19→20→21
When there is thunderbolt wire, lightening pulse flows through following approach, completes wire to cross-arm discharge process；
21→20→19→18→10→11→12→16→3→4→2→1
During above-mentioned two, lightening pulse produces great change magnetic field, sensing by the insulated conductor being wound on iron core
Coil produces huge moment of torsion, overcomes induction coil strength phase magnet power, drives upper electrode metal part to reverse,
Elongate thunder discharge flashover path, it is suppressed that flashover passage is converted into the probability of power frequency arc, reduces thunderbolt
Trip-out rate；After lightening pulse, the induction coil of torsion is in induction coil balance iron block, induction coil balance
Restore balance under the magneticaction that strongly phase magnet produces, it is ensured that reasonably Insulation Coordination.
Claims (8)
1. utilizing lightening pulse to elongate a device for electric discharge flashover path suppression tripping rate with lightning strike, its feature exists
In: being made up of cross arm of tower, insulator chain and portable protective gaps mechanism, the upper end of described insulator chain is by protection
On gap, electrode is fixed gold utensil and is suspended on described cross arm of tower, and the lower end of described insulator chain connects portable protective gaps
Bottom electrode fixes gold utensil, and described portable protective gaps mechanism is arranged on electrode on described portable protective gaps and fixes gold utensil and protection
Gap bottom electrode is fixed between gold utensil.
One the most according to claim 1 utilizes lightening pulse to elongate electric discharge flashover path suppression thunderbolt and jumps
The device of lock rate, it is characterised in that: described portable protective gaps mechanism include insulating support, metal bracket, iron core,
Rolling bearing metallic shield, electromagnetic induction coil, induction coil balance strength phase magnet and the air gap group
Become, described insulating support upper end be welded on the upper electrode metal portion that electrode on described portable protective gaps is fixed on gold utensil
Dividing fixing connection, described insulating support lower end is provided with described iron core, and described metal bracket is arranged on described insulation
On support, this metallic support is provided with induction coil balance strength phase magnet insulating support, described sensing
Coil balance strength phase magnet is arranged on this induction coil balance strength phase magnet insulating support.
One the most according to claim 2 utilizes lightening pulse to elongate electric discharge flashover path suppression thunderbolt and jumps
The device of lock rate, it is characterised in that: described rolling bearing metallic shield is by rolling bearing and two metallic shields
Cover composition, described rolling bearing is centrally disposed, and the two ends of this rolling bearing are symmetrically arranged with left metallic shield
With right metallic shield, electrode insulated part on the two ends of described rolling bearing are fixing, described left metallic shield
Cover connects upper electrode metal part, and described right metallic shield connects described upper electrode insulated part, this right metal
The upper end open radius of radome is more than the radius of described upper electrode insulated part, freely rotatable to ensure.
One the most according to claim 3 utilizes lightening pulse to elongate electric discharge flashover path suppression thunderbolt and jumps
The device of lock rate, it is characterised in that: the right side of described upper electrode insulated part connects described electromagnetic induction coil,
Induction coil balance iron block, the other end of described electromagnetic induction coil it is symmetrically arranged with in this electromagnetic induction coil
Connected with being connected carbon brush by upper electrode metal part, this connection carbon brush is provided with metal ball.
5. utilize lightening pulse to elongate electric discharge flashover path suppression thunder according to the one described in claim 2 and 4
Hit the device of trip-out rate, it is characterised in that: insulated conductor one end connects described upper electrode metal part, is wrapped over
Described iron core, is connected through described metal bracket with described metal ball, the portable protective gaps drawn from described metal ball
Upper electrode connects one end, described the air gap, and the other end of this air gap connects portable protective gaps bottom electrode, this guarantor
Protecting gap bottom electrode to be connected to described portable protective gaps bottom electrode and fix on gold utensil, described portable protective gaps bottom electrode is fixed
Wire is drawn in the lower end of gold utensil.
One the most according to claim 4 utilizes lightening pulse to elongate electric discharge flashover path suppression thunderbolt and jumps
The device of lock rate, it is characterised in that: described induction coil balance strength phase magnet is at two pieces of described induction coils
Balance is with on iron block perpendicular bisector, and with the distance at two pieces of described induction coil balance iron block midpoints more than described electricity
The width of magnetic induction coil.
7. utilize lightening pulse to elongate electric discharge flashover path according to the one described in claim 1-6 any one
Suppression tripping rate with lightning strike device, it is characterised in that: described apparatus main body structure use φ 14 galvanized steel bar and
Epoxy resins insulation rod, coupling part φ 14 expansion bolt is fixed.
One the most according to claim 5 utilizes lightening pulse to elongate electric discharge flashover path suppression thunderbolt and jumps
The device of lock rate, it is characterised in that: on described portable protective gaps, the distance between electrode and portable protective gaps bottom electrode is
The 85% of described insulator chain,Will insulator chain short circuit 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610289868.7A CN105845289B (en) | 2016-05-04 | 2016-05-04 | The device of electric discharge flashover path suppression tripping rate with lightning strike is elongated using lightening pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610289868.7A CN105845289B (en) | 2016-05-04 | 2016-05-04 | The device of electric discharge flashover path suppression tripping rate with lightning strike is elongated using lightening pulse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105845289A true CN105845289A (en) | 2016-08-10 |
| CN105845289B CN105845289B (en) | 2017-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610289868.7A Active CN105845289B (en) | 2016-05-04 | 2016-05-04 | The device of electric discharge flashover path suppression tripping rate with lightning strike is elongated using lightening pulse |
Country Status (1)
| Country | Link |
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| CN (1) | CN105845289B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360697A (en) * | 2018-11-07 | 2019-02-19 | 南宁超伏电气科技有限公司 | The jet-stream wind arc extinguishing lightning protection device of dual triggering |
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| CN201868733U (en) * | 2010-01-23 | 2011-06-15 | 山东迅实电气有限公司 | Lightning protection gap for traction power supply system of electrified railway |
| JP2011187375A (en) * | 2010-03-10 | 2011-09-22 | Toshiba Corp | Lightning arrester for power transmission |
| CN202093903U (en) * | 2011-01-10 | 2011-12-28 | 王巨丰 | Constraint space injection air flow arc extinguishing lightning protection gap device |
| CN202395408U (en) * | 2011-11-22 | 2012-08-22 | 李景禄 | Adjustable gap lightning protection device used for electric power system power transmission line |
| CN104332828A (en) * | 2014-11-13 | 2015-02-04 | 王巨丰 | Arc-extinguishing lightning-proof clearance device capable of preventing continuous flash-over or multiple flash-over |
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2016
- 2016-05-04 CN CN201610289868.7A patent/CN105845289B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201868733U (en) * | 2010-01-23 | 2011-06-15 | 山东迅实电气有限公司 | Lightning protection gap for traction power supply system of electrified railway |
| JP2011187375A (en) * | 2010-03-10 | 2011-09-22 | Toshiba Corp | Lightning arrester for power transmission |
| CN202093903U (en) * | 2011-01-10 | 2011-12-28 | 王巨丰 | Constraint space injection air flow arc extinguishing lightning protection gap device |
| CN202395408U (en) * | 2011-11-22 | 2012-08-22 | 李景禄 | Adjustable gap lightning protection device used for electric power system power transmission line |
| CN104332828A (en) * | 2014-11-13 | 2015-02-04 | 王巨丰 | Arc-extinguishing lightning-proof clearance device capable of preventing continuous flash-over or multiple flash-over |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360697A (en) * | 2018-11-07 | 2019-02-19 | 南宁超伏电气科技有限公司 | The jet-stream wind arc extinguishing lightning protection device of dual triggering |
| CN109360697B (en) * | 2018-11-07 | 2023-09-12 | 南宁超伏电气科技有限公司 | Dual-triggering jet airflow arc extinguishing lightning protection device |
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| Publication number | Publication date |
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| CN105845289B (en) | 2017-12-29 |
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