CN102486956A - Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow - Google Patents
Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow Download PDFInfo
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- CN102486956A CN102486956A CN2010105694538A CN201010569453A CN102486956A CN 102486956 A CN102486956 A CN 102486956A CN 2010105694538 A CN2010105694538 A CN 2010105694538A CN 201010569453 A CN201010569453 A CN 201010569453A CN 102486956 A CN102486956 A CN 102486956A
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Abstract
The invention relates to a lightning protection device, in particular to a lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow, which is used for power transmission lines with all voltage grades. The lightning protection device is arranged on all iron caps of a line insulator string in parallel, a main discharging gap and a multigap driven arc extinguishing unit are connected in series, and the total flashover voltage is less than that of the protected insulator string, so that when the lines are struck by lightning, a product is punctured prior to the protected insulator string. A signal acquisition device acquires lightning current signals automatically and starts a gas generation device, so that high-speed air flow is generated instantaneously in a semi-enclosed space and extinguishes the arcs; and in the multigap driven arc extinguishing unit, air is rapidly heated by high-temperature arcs and expands, lengthens the arcs quickly and sprays out the arcs from air-guiding holes so as to extinguish the arcs. According to the lightning protection device, the structure is simple, the installation is convenient, and when the line is struck by the lightning, lightning current can be leaked into the ground quickly, and simultaneously the high-speed airflow is generated to extinguish power-flow current, so that electrical equipment is effectively protected and the power supply reliability is improved.
Description
Technical field
The present invention relates to a kind of lightning protection device, specifically a kind of passive compound multiple spot air blast active arc extinguishing lightning protection device in many gaps that is used for each electric pressure transmission line.
Background technology
The transmission line lightning protection always is the important content of power department lightning protection work, and lightning fault remains one of key factor that influences power grid security.The impulse flashover that transmission line causes when thunderbolt takes place causes the line insulator flashover, produces very big power frequency continued flow then, damages insulator string and gold utensil, causes line accident.Traditional " obstruction type " lightning protection mode is because its limitation can not solve the thunderbolt problem at all.So power department generally is employed in, and transmission line installs parallel connection protection gap additional or leakage conductor is realized protective wire.Yet in the actual motion, parallel connection protection gap and leakage conductor all have its obvious defects following:
At first, when thunderbolt took place transmission line, parallel connection protection gap leaked into the earth preferentially because of the overvoltage that thunderbolt causes punctures with lightning current, thereby plays the effect of protection transmission line and electric equipment.Yet because parallel connection protection gap does not have the arc extinguishing ability; Can not extinguish the power frequency continued flow that causes behind the insulator string flashover; Electric arc is long-time calcination between the protection gap, will cause insulator string to damage, when serious; Possibly cause the transmission line broken string, electric arc can cause ablation and reduce its protective value electrode simultaneously.The final circuit breaker that relies on comes extinguish arcs to realize protecting transmission line and equipment, is to sacrifice the way that " trip-out rate " and " power supply reliability " exchanges " low rate of failure " for.
Secondly, leakage conductor costs an arm and a leg, use, maintenance cost height; Leakage Current is big, and useful life is short, changes frequent; And the zinc oxide module used of leakage conductor under lightning impulse owing to there is tangible kelvin effect; Big electric current is blast easily down, causes the circuit chromic trouble, is unfavorable for electrical network economy, safety, stable operation.
Summary of the invention
The objective of the invention is to overcome the shortcoming in the above-mentioned background technology, initiatively arc extinguishing lightning protection device of the passive compound multiple spot air blast in a kind of many gaps is provided.The present invention is directed to the actual conditions of China's multi-thunder area transmission line; The a large amount of exploitative experiments that carry out have been designed a kind of suspension insulator (porcelain, glass) of each electric pressure transmission line and passive compound multiple spot air blast active arc extinguishing lightning protection device in many gaps of strain insulator string of can be used for, and this device not only can have precedence over by the protection insulator string and puncture; And has the initiatively dual arc extinguishing function that combines of arc extinguishing and the passive arc extinguishing in many gaps of air blast; Puncture at protective device, after lightning current flow through, air blast active arc extinguishing unit and the passive arc extinguishing unit in many gaps moved simultaneously; Cut off power frequency continued flow immediately; Reach the purpose of quick elimination thunderbolt ground connection or short trouble, and the quenching time less than relaying protection operate time, thereby effectively guarantee the reliability of supplying power.
The passive compound multiple spot air blast in this many gaps is the arc extinguishing lightning protection device initiatively; With insulator string ground connection side is preface; This device comprises: first insulator fixed support device (1), air blast be arc extinguishing unit (2), main discharge gap (3), second insulator fixed support device (4), the passive arc extinguishing unit in many gaps (5), the 3rd insulator fixed support device (6), last a slice insulator fixed support device (7), main discharge gap (8), high-field electrode (9) and high-field electrode fixture (10) initiatively; The passive compound multiple spot air blast in said many gaps initiatively arc extinguishing lightning protection device is in parallel installed with in the corresponding chapeau de fer of line insulator string through fixed support device; At the air blast that is fixed in first insulator fixed support device (1) arc extinguishing unit (2) and being fixed between the metallic conductor fixed support device (4) of second insulator initiatively; And the air blast that is fixed in last a slice insulator fixed support device (7) arc extinguishing unit (2) and being fixed between the high-field electrode (9) of yoke plate initiatively, forming respectively with the air is main discharge gap (3) and (8) of dielectric; Between the c of second insulator fixture (4) end to last a slice insulator fixed support device (7), connect by the passive arc extinguishing units in many gaps (5); In the passive arc extinguishing units in many gaps (5), forming with the air between per two adjacent nonmetal electrodes is the little discharging gap of dielectric; A plurality of little air gap series connection in main discharge gap (3), the passive arc extinguishing units in (8) and many gaps (5); Its total flashover voltage is less than being protected the insulator string flashover voltage; Thereby when transmission line is struck by lightning; This assembly first punctures, and forms discharge channel in a plurality of little discharging gap of power frequency continued flow in the passive arc extinguishing unit of main discharge gap and many gaps that continues, and the protection insulator string is avoided the electric arc calcination.Gas generating unit places in the discharge channel of air blast active arc extinguishing unit (2); In the time of the protection spark-over of gap; The automatic acquired signal of signal pickup assembly also starts gas generating unit; Moment produces high velocity air, and the high velocity jet air-flow at one end leaves in the semiclosed air flue of gas outlet, consumingly to the electric arc in the hemi-closure space cool off with side knock to arc extinction; Simultaneously, the electric arc in passive many gaps arc extinguishing unit (5) sharply heats the air between adjacent two nonmetal electrodes and makes its rapid expanding in the small space of sealing, elongates electric arc rapidly and from the gas port ejection, plays the effect of auxiliary arc extinguishing.The passive arc extinguishing units in many gaps (5) internal electrode adopts nonmetallic electric conducting material; The disruptive discharge calcination can not produce metallic vapour; Help extinguishing of electric arc between the gap; And be uniform electric field between per two adjacent nonmetal spheric electrodes of the passive arc extinguishing units in many gaps (5), can prevent restriking behind the arc extinguishing effectively, simultaneously; Because the passive arc extinguishing units in each many gap (5) have very big electric capacity, it is parallel to the voltage of each sheet insulator when whole insulator string will normally be moved and distributes and improve.
The present invention has remarkable advantages with respect to parallel connection gaps and leakage conductor; When circuit normally moves, do not have afterflow, can start reliable arc extinguishing in the time of " dredging " lightning current rapidly when Lightning Over-voltage takes place; And can be with arc extinction before the relay protection of transmission line action; Thereby avoid line tripping to take place, thereby protect power equipment effectively, improve power supply reliability.But and repetitive operation, gas generating unit can charged for replacement.Because the time compole that electric arc continues is short, electrode material does not have ablation basically, can steady in a long-term move.
Description of drawings
Fig. 1 is a structure chart of the present invention
Fig. 2 is the passive arc extinguishing unit sketch mapes in the many gaps among the present invention
Fig. 3 is the air blast active arc extinguishing unit sketch map among the present invention
Fig. 4 is the insulator fixed support device sketch map among the present invention
Embodiment
Describe the initiatively execution mode of arc extinguishing lightning protection device of the passive compound multiple spot air blast in many gaps of the present invention in detail below in conjunction with accompanying drawing.
Referring to Fig. 1; The passive compound multiple spot air blast in this many gaps is the arc extinguishing lightning protection device initiatively; With insulator string ground connection side is preface; This device comprises: first insulator fixed support device (1), air blast be arc extinguishing unit (2), main discharge gap (3), second insulator fixed support device (4), the passive arc extinguishing unit in many gaps (5), the 3rd insulator fixed support device (6), last a slice insulator fixed support device (7), main discharge gap (8), high-field electrode (9) and high-field electrode fixture (10) initiatively; The passive compound multiple spot air blast in said many gaps initiatively arc extinguishing lightning protection device is in parallel installed with in the corresponding chapeau de fer of line insulator string through fixed support device; At the air blast that is fixed in first insulator fixed support device (1) arc extinguishing unit (2) and being fixed between the metallic conductor fixed support device (4) of second insulator initiatively; And the air blast that is fixed in last a slice insulator fixed support device (7) arc extinguishing unit (2) and being fixed between the high-field electrode (9) of yoke plate initiatively, forming respectively with the air is main discharge gap (3) and (8) of dielectric; Between the c of second insulator fixture (4) end to last a slice insulator fixed support device (7), connect by the passive arc extinguishing units in many gaps (5); In the passive arc extinguishing units in many gaps (5), forming with the air between per two adjacent nonmetal electrodes is the little discharging gap of dielectric; A plurality of little air gap series connection in main discharge gap (3), the passive arc extinguishing units in (8) and many gaps (5); Its total flashover voltage is less than being protected the insulator string flashover voltage; Thereby when transmission line is struck by lightning; This assembly first punctures, and forms discharge channel in a plurality of little discharging gap of power frequency continued flow in the passive arc extinguishing unit of main discharge gap and many gaps that continues, and the protection insulator string is avoided the electric arc calcination.Gas generating unit places in the discharge channel of air blast active arc extinguishing unit (2); In the time of the protection spark-over of gap; The automatic acquired signal of signal pickup assembly also starts gas generating unit; Moment produces high velocity air, and the high velocity jet air-flow at one end leaves in the semiclosed air flue of gas outlet, consumingly to the electric arc in the hemi-closure space cool off with side knock to arc extinction; Simultaneously, the electric arc in passive many gaps arc extinguishing unit (5) sharply heats the air between adjacent two nonmetal electrodes and makes its rapid expanding in the small space of sealing, elongates electric arc rapidly and from the gas port ejection, plays the effect of auxiliary arc extinguishing.The passive arc extinguishing units in many gaps (5) internal electrode adopts nonmetallic electric conducting material; The disruptive discharge calcination can not produce metallic vapour; Help extinguishing of electric arc between the gap; And be uniform electric field between per two adjacent nonmetal spheric electrodes of the passive arc extinguishing units in many gaps (5), can prevent restriking behind the arc extinguishing effectively, simultaneously; Because the passive arc extinguishing units in each many gap (5) have very big electric capacity, it is parallel to the voltage of each sheet insulator when whole insulator string will normally be moved and distributes and improve.
Transmission line is normally in service; The potential difference at these device two ends equals the circuit phase voltage; Reach the disruptive critical voltage of this device far away, device can be not breakdown and no current pass through, thereby the signal pickup assembly induction can not start gas generating unit less than lightning current yet; When thunderbolt takes place in transmission line (direct lightning strike is perhaps responded to thunder); The overvoltage ripple that produces is transferred to the line insulator string place through lead; Because being lower than by the flashover voltage of protection insulator string, the flashover voltage of this device preferentially punctures; Lightning current is leaked into the earth, reduce superpotential amplitude, thereby play the effect of protection insulator string and circuit and electric equipment.Simultaneously, when lightning current flow through conductor, signal pickup assembly induction lightening stream also started initiatively arc extinguishing unit of air blast rapidly automatically, and moment produces the high velocity jet air-flow.Because this air-flow has high speed, can produce great the impact to electric arc, the electric arc in the hemi-closure space is elongated when sharply being cooled off, and extinguishes thereby can not be maintained until; Simultaneously, the electric arc that produces in the arc extinguishing unit of passive many gaps sharply heats the air between adjacent two nonmetal electrodes and makes its rapid expanding in the small space of sealing, elongates electric arc rapidly and from the gas port ejection, plays the effect of auxiliary arc extinguishing.Because the passive arc extinguishing unit internal electrode in many gaps adopts nonmetallic electric conducting material; The disruptive discharge calcination can not produce metallic vapour, helps extinguishing of electric arc between the gap, and is uniform electric field between per two adjacent nonmetal spheric electrodes in the passive arc extinguishing unit in many gaps; Can prevent restriking behind the arc extinguishing effectively; Simultaneously, because each passive arc extinguishing unit in many gaps has very big electric capacity, it is parallel to the voltage of each sheet insulator when whole insulator string will normally be moved and distributes and improve.
Fig. 2 is the passive arc extinguishing unit sketch mapes in the many gaps among the present invention; It has a high-temperature insulation material shell; Nonmetal spheric electrode encapsulates in the enclosure, and the air gap distance that forms between per two adjacent nonmetal electrodes is half the less than said nonmetal spheric electrode radius, and each air gap has the discharge gas port; When disruptive discharge; The electric arc that produces in the arc extinguishing unit of passive many gaps sharply heats the air between adjacent two nonmetal spheric electrodes and makes its rapid expanding in the small space of sealing, elongate electric arc rapidly and from the gas port ejection, play the effect of auxiliary arc extinguishing.
Fig. 3 is the air blast active arc extinguishing unit sketch map among the present invention; It has a semiclosed high-temperature insulation material shell; Gas generating unit places near the semiclosed air flue the air gap that forms between inner two spheric electrodes; When conductor electrode had lightning current to flow through, the high velocity jet gas that starts generation automatically acted on the gas that produces after electric arc and the action and is expelled to the atmosphere from the gas outlet.
Fig. 4 is the insulator fixed support device sketch map among the present invention, and first insulator fixed support device is metallic conductor, and second insulator string fixed support device is metallic conductor, and its both ends horizontal direction is 180 ° of layouts; The 3rd fixed support device to second from the bottom insulator is insulator, and 180 ° of layouts of the fixed support device horizontal direction between adjacent two, and fixed support device is fixed in each sheet insulator cap and forms and is fastenedly connected.
The present invention has remarkable advantages with respect to parallel connection gaps and leakage conductor, when circuit normally moves, does not have afterflow, can start reliable arc extinguishing in the time of " dredging " lightning current rapidly when Lightning Over-voltage takes place; And have air blast initiatively arc extinguishing unit and the passive arc extinguishing unit in many gaps; Two kinds of arc quenching methods combine can moment arc extinguishing; Thereby make that the duration of electric arc is extremely short; Electrode material does not have ablation basically, can be with arc extinction before relay protection of transmission line action, thus avoid line tripping to take place; Said device can be through the closely spaced number in the passive arc extinguishing unit of distance and many gaps of adjustment main discharge gap to adapt to the different voltages with different grade.Fixed support device can adapt to dissimilar insulator caps, the kicker magnet fixed form that gas generating unit adopts, and replacing, thereby this device easily can be used repeatedly, reaches once mounting, repeatedly the purpose of income.Greatly practice thrift investment.And the gas that this device produces is safe from harm compliance with environmental protection requirements to biological, environment.
Although invention has been described; But foregoing description just for illustrative purposes; The invention is not restricted to the above-mentioned specific descriptions that combine accompanying drawing; Those of ordinary skills have the ability that it is not broken away from the various changes of spirit of the present invention, and protection scope of the present invention is defined by the claims.
Claims (4)
1. the passive compound multiple spot air blast in gap more than kind arc extinguishing lightning protection device initiatively; With insulator string ground connection side is preface; This device comprises: first insulator fixed support device (1), air blast be arc extinguishing unit (2), main discharge gap (3), second insulator fixed support device (4), the passive arc extinguishing unit in many gaps (5), the 3rd insulator fixed support device (6), last a slice insulator fixed support device (7), main discharge gap (8), high-field electrode (9) and high-field electrode fixture (10) initiatively; The passive compound multiple spot air blast in said many gaps initiatively arc extinguishing lightning protection device is in parallel installed with in the corresponding chapeau de fer of line insulator string through fixed support device; It is characterized in that: the b of first insulator fixed support device (1) holds connection and is fixed to first insulator cap; Air blast initiatively arc extinguishing unit (2) is connected to a end of first insulator fixed support device (1), and and a end of second insulator fixed support device (4) between form main discharge gap (3); The b of second insulator string fixed support device (4) holds connection and is fixed in second insulator cap; Be connected in second insulator fixed support device (4) c end air blast initiatively the air blast of arc extinguishing unit (2) and a end that is connected in the 3rd insulator fixed support device (6) initiatively connect the b end connection of the 3rd insulator string fixed support device (6) and be fixed in the 3rd insulator cap between the arc extinguishing unit (2) by the passive arc extinguishing units in many gaps (5); Connected mode between the fixed support device of the 3rd extremely last a slice insulator, the passive arc extinguishing unit in many gaps and the air blast active arc extinguishing unit is identical with the connected mode between second and the 3rd; The b end connection of the fixed support device (7) of last a slice insulator also is fixed in last a slice insulator cap; Air blast initiatively arc extinguishing unit (2) be connected to last a slice insulator fixed support device (7) a end and and a end of high-field electrode (9) between form main discharge gap (8), the b end of high-field electrode (9) connects through high-field electrode connector (10) and is fixed in the line side yoke plate.
2. the passive compound multiple spot air blast in many gaps according to claim 1 is the arc extinguishing lightning protection device initiatively; It is characterized in that; The nonmetal spheric electrode of the passive arc extinguishing units in many gaps (5) is encapsulated in the insulation crust; The air gap distance that forms between adjacent two nonmetal spheric electrodes is half the less than said nonmetal spheric electrode radius, and each air gap has the discharge gas port.
3. the passive compound multiple spot air blast in many gaps according to claim 1 is the arc extinguishing lightning protection device initiatively; It is characterized in that; Air blast initiatively arc extinguishing unit (2) has a semiclosed high-temperature insulation material shell; Gas generating unit places near the semiclosed air flue the air gap that forms between inner two spheric electrodes, and the end of semiclosed air flue leaves the gas outlet.
4. the passive compound multiple spot air blast in many gaps according to claim 1 is the arc extinguishing lightning protection device initiatively; It is characterized in that; It is characterized in that; First insulator fixed support device (1) is conductor, and second insulator string fixed support device (4) also is conductor, and its a, c end horizontal direction 180 degree are arranged; The 3rd fixed support device to last a slice insulator is insulator, and the fixed support device horizontal direction between adjacent two is 180 degree layouts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010569453 CN102486956B (en) | 2010-12-02 | 2010-12-02 | Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010569453 CN102486956B (en) | 2010-12-02 | 2010-12-02 | Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow |
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| Publication Number | Publication Date |
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| CN102486956A true CN102486956A (en) | 2012-06-06 |
| CN102486956B CN102486956B (en) | 2013-06-26 |
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| CN 201010569453 Active CN102486956B (en) | 2010-12-02 | 2010-12-02 | Lightning protection device with combination of multigap driven arc extinguishing and driving arc extinguishing by multipoint strong airflow |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481822A (en) * | 2017-08-24 | 2017-12-15 | 王巨丰 | A kind of separate assembling compresses arc-extinguishing tube |
| CN112117648A (en) * | 2019-06-20 | 2020-12-22 | 南宁超伏电气科技有限公司 | Method and system for extinguishing arc plasma through multi-tube recoil |
| US10894610B2 (en) | 2017-06-05 | 2021-01-19 | The Boeing Company | Jet stream lightning protection apparatus, system, and method the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06333453A (en) * | 1993-05-26 | 1994-12-02 | Ngk Insulators Ltd | Lighting insulator device |
| CN101159368A (en) * | 2007-09-28 | 2008-04-09 | 王巨丰 | Air blast arc-quenching lightning protection inter space device |
| CN201478816U (en) * | 2009-04-16 | 2010-05-19 | 王嬿蕾 | Air blowing and variable gap arc extinguishing lightning protection gap device |
-
2010
- 2010-12-02 CN CN 201010569453 patent/CN102486956B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06333453A (en) * | 1993-05-26 | 1994-12-02 | Ngk Insulators Ltd | Lighting insulator device |
| CN101159368A (en) * | 2007-09-28 | 2008-04-09 | 王巨丰 | Air blast arc-quenching lightning protection inter space device |
| CN201478816U (en) * | 2009-04-16 | 2010-05-19 | 王嬿蕾 | Air blowing and variable gap arc extinguishing lightning protection gap device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10894610B2 (en) | 2017-06-05 | 2021-01-19 | The Boeing Company | Jet stream lightning protection apparatus, system, and method the same |
| CN107481822A (en) * | 2017-08-24 | 2017-12-15 | 王巨丰 | A kind of separate assembling compresses arc-extinguishing tube |
| CN107481822B (en) * | 2017-08-24 | 2023-11-03 | 王巨丰 | Split combined type compression arc extinguishing pipe |
| CN112117648A (en) * | 2019-06-20 | 2020-12-22 | 南宁超伏电气科技有限公司 | Method and system for extinguishing arc plasma through multi-tube recoil |
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