CN102737795B - 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus - Google Patents
10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus Download PDFInfo
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- CN102737795B CN102737795B CN201110090288.2A CN201110090288A CN102737795B CN 102737795 B CN102737795 B CN 102737795B CN 201110090288 A CN201110090288 A CN 201110090288A CN 102737795 B CN102737795 B CN 102737795B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
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- 239000007789 gas Substances 0.000 claims description 63
- 238000010891 electric arc Methods 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
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- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
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- 230000001681 protective effect Effects 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
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- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
本发明涉及一种防雷保护装置，特别是一种适用于10～35kV架空输电线路的10～35kV架空输电线路约束空间喷射气体灭弧防雷间隙。该装置并联安装于线路绝缘子串两端，保护间隙之间的闪络电压小于被保护绝缘子串，从而在输电线路遭受雷击时优先于被保护绝缘子串击穿，击穿放电时，信号采集装置自动感应雷电流信号并触发高速喷射气体发生装置，瞬间产生高速喷射气流对约束空间内续流电弧沿纵向强烈冲击、冷却至熄灭。本发明结构简单，安装、维护方便，其在线路发生雷击时可快速将雷电流泄入大地的同时产生高速气流熄灭工频续流，从而有效地保护电力设备，提高供电可靠性。
The invention relates to a lightning protection device, in particular to a 10-35kV overhead transmission line suitable for a 10-35kV overhead transmission line constrained space spray gas arc extinguishing lightning protection gap. The device is installed in parallel at both ends of the line insulator strings, and the flashover voltage between the protection gaps is lower than that of the protected insulator strings, so that when the transmission line is struck by lightning, it breaks down prior to the protected insulator strings. When the breakdown discharges, the signal acquisition device automatically The lightning current signal is sensed and the high-speed jet gas generating device is triggered, and the high-speed jet gas flow is instantly generated to strongly impact the freewheeling arc in the confined space along the longitudinal direction, and cool down until it is extinguished. The invention has simple structure and is convenient for installation and maintenance. When a lightning strike occurs on the line, it can quickly release the lightning current into the ground and at the same time generate a high-speed airflow to extinguish the power frequency continuous flow, thereby effectively protecting the electric equipment and improving the reliability of power supply.
Description
Technical field
The present invention relates to a kind of lightning protection device, specifically a kind of 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus for 10～35kV overhead transmission line.
Background technology
Transmission line lightning protection always is the important content of power department Thunder Protection, and lightning fault remains one of key factor affecting power grid security.The impulse flashover that transmission line causes while there is thunderbolt, causes line insulator flashover, then produces very large power frequency continued flow, damages insulator string and gold utensil, causes line accident.Traditional " blocking type " lightning protection mode due to its limitation, can not solve problem of lightning at all.Therefore the general employing of power department is installed gap or the leakage conductor protected in parallel additional at transmission line and is realized protective wire.Yet in actual motion, protection gap in parallel and leakage conductor have its obvious defect as follows:
First, when thunderbolt occurs transmission line, protection in parallel gap, preferentially because the overvoltage that thunderbolt causes punctures, leaks into the earth by lightning current, thereby plays the effect of protection transmission line and electric equipment.Yet because parallel connection protection gap does not have arc extinguishing ability; can not extinguish the power frequency continued flow causing after insulator string flashover; electric arc is long-time calcination between protection gap; to cause insulator string to damage; when serious; may cause 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 protection 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 is expensive, use, maintenance cost is high, Leakage Current is large, and useful life is short, changes frequent, and the zinc oxide module used of leakage conductor under lightning impulse owing to there being obvious kelvin effect, under large electric current, easily blast, causes circuit chromic trouble, is unfavorable for electrical network economy, safety, stable operation.
Summary of the invention
The object of the invention is to overcome the shortcoming in above-mentioned background technology, a kind of 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus that is applicable to 10～35kV overhead transmission line is provided.The present invention is directed to the actual conditions of China's multi-thunder area 10～35kV overhead transmission line, the a large amount of exploitative experiments that carry out, designed a kind of suspension insulator (porcelain that can be used for 10～35kV overhead transmission line, glass) and 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus of strain insulator string, this device is when there is thunderbolt in transmission line, not only can have precedence over protected insulator string punctures, and there is initiatively arc-suppression function of very strong constraint space air blast, at protective device, puncture, after lightning current flows through, in constraint space, gas generating unit action generation high velocity air extinguishes power frequency continued flow, reach the object of quick elimination thunderbolt ground connection or short trouble, and the quenching time is less than relaying protection operate time, thereby effectively guarantee the reliability of power supply.
This 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus comprises: ground connection lateral electrode fixture, ground connection lateral electrode, gap in arcing chamber fixture, gap in arcing chamber noncontinuous electrode, signal pickup assembly, insulated enclosure housing, gas generating unit, hydrophobicity shirt rim, gap in arcing chamber puff prot, main discharge gap, side of wire was electrode, side of wire was electrode fixing device, embedded iron block, kicker magnet and gas generating unit switch sheet metal, described 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection inter space is installed in parallel in line insulator string two ends by fixture, between gap in arcing chamber noncontinuous electrode and side of wire was electrode, form main discharge gap, the flashover voltage of main discharge gap is less than the flashover voltage of protected insulator string, thereby when being struck by lightning, transmission line preferentially punctures, lasting power frequency continued flow forms electrical discharge arc passage between main discharge gap, protection insulator string is avoided electric arc calcination, 3 gas generating units are installed in the insulated enclosure housing of constraint space, while there is thunderbolt in transmission line, the automatic collection signal of signal pickup assembly also starts gas generating unit, and the electric arc of the high velocity jet airflow function of generation in arc extinguishing cavity also causes impact of collision to be cooled to electric arc and extinguishes.
Signal pickup assembly is installed in series in gap in arcing chamber noncontinuous electrode, and be connected to the gas generating unit of trigger position, 3 gas generating unit sequence startings when there is thunderbolt, high velocity jet gas shock gas generating unit after gas generating unit starts switches sheet metal, the necessary condition starting as next gas jet generating means; The hydrophobicity shirt rim of insulation shell outside can effectively prevent that the rainy day from the flashover along insulation shell surface occurring.
The present invention has obvious advantage with respect to parallel connection gaps and leakage conductor; when circuit normally moves without afterflow; while there is Lightning Over-voltage, can start rapidly; reliable arc extinguishing when " dredging " lightning current; and can be by arc extinction before relay protection of transmission line action; thereby avoid line tripping to occur, thereby effectively protect power equipment, improve power supply reliability.And can repetitive operation, gas generating unit can charged for replacement.Because the time compole that electric arc is lasting is short, electrode material, substantially without ablation, can steady in a long-term move.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention
Fig. 2 is that in the present invention, gas generating unit starts switching schematic diagram
Embodiment
Below in conjunction with accompanying drawing, describe the execution mode of 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection inter space of the present invention in detail.
Fig. 1 is structure chart of the present invention, this 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus, this device comprises: ground connection lateral electrode fixture (1), ground connection lateral electrode (2), gap in arcing chamber fixture (3), gap in arcing chamber noncontinuous electrode (4), signal pickup assembly (5), insulated enclosure housing (6), gas generating unit (7), hydrophobicity shirt rim (8), gap in arcing chamber puff prot (9), main discharge gap (10, side of wire was electrode (11), side of wire was electrode fixing device (12), embedded iron block (13), kicker magnet (14) and gas generating unit switch sheet metal (15), described 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection inter space is installed in parallel in line insulator string two ends by fixture, it is characterized in that: for connecting wire and forming with wire one end that the reliable side of wire was electrode fixing device (12) that is connected connects main discharge gap (10), be side of wire was electrode (11), reliably be connected gap in arcing chamber fixture (3) with ground connection lateral electrode (2), the other end that is connected to main discharge gap (10) is gap in arcing chamber noncontinuous electrode (4), the ground connection lateral electrode fixture (1) being reliably connected with earth electrode is connected to the other end of ground connection lateral electrode (2), signal pickup assembly (5) is series at gap in arcing chamber noncontinuous electrode (4), three gas generating units (7) are placed near the insulated enclosure housing (6) gap in arcing chamber noncontinuous electrode (4) on-fixed end, and insulated enclosure housing (6) outside is with hydrophobicity shirt rim (8), the high velocity jet air-flow that gas generating unit (7) produces longitudinally acts on electric arc and sprays along gap in arcing chamber puff prot (9).
Transmission line is normally in service, the potential difference at these device two ends equals circuit phase voltage, reach far away the disruptive critical voltage of this device, device can be not breakdown and no current pass through, thereby signal pickup assembly induction can not start gas generating unit less than lightning current yet; While there is thunderbolt in transmission line (direct lightning strike or induction thunder); the overvoltage ripple producing arrives line insulator string place by wire transmission; because the flashover voltage of this device preferentially punctures lower than the flashover voltage of protected insulator string; lightning current is leaked into the earth; reduce superpotential amplitude, thereby play the effect of protection insulator string and circuit and electric equipment.Meanwhile, when lightning current flows through conductor, signal pickup assembly induction lightening stream also starts rapidly initiatively arc extinguishing unit of constraint space air blast automatically, and moment produces high velocity jet air-flow.Because this air-flow has high speed, can electric arc be produced greatly and be impacted, the electric arc in constraint space is elongated by sharply cooling time, thereby can not be maintained until, extinguishes; Meanwhile, insulated enclosure inner walls adopts gas exhausted material, under high-temperature electric arc effect, produces gases at high pressure, can accelerate the impact of electric arc and cooling, plays the effect of auxiliary extinction of arc.
Fig. 2 is that in the present invention, gas generating unit starts switching schematic diagram, three gas generating units (7) superpose vertically and arrange and embedded iron block (13) is equipped with in inside, gas generating unit (7) sequence starting when thunderbolt occurs transmission line, while falling to kicker magnet (14) position under Action of Gravity Field and its adhesive, and form and be reliably connected with signal pickup assembly (5), high velocity jet gas shock gas generating unit after gas generating unit (7) starts switches sheet metal (15), the necessary condition starting as next gas jet generating means (7).
Each gas generating unit is all provided with and switches sheet metal and embedded iron block, and when gas generating unit is at Action of Gravity Field, while falling to trigger position, gas generating unit is by kicker magnet adhesive and be connected triggering loop conducting with signal pickup assembly; Meanwhile, switch sheet metal and the combination of housing inner groovy, effectively support gas generating unit; The high-speed gas producing after gas generating unit action impacts and switches sheet metal when coming off, produce reaction force, make it break away from magnetic attraction and eject from device, under next gas generating unit is automatic under Action of Gravity Field, slide to trigger position, thereby realize three gas generating units, sequentially switch.
The present invention has obvious advantage with respect to parallel connection gaps and leakage conductor, when circuit normally moves, without afterflow, can start rapidly reliable arc extinguishing in the time of " dredging " lightning current while there is Lightning Over-voltage; And there is constraint space air blast active arc extinguishing and arc extinguishing cavity and under high-temperature electric arc effect, produce the double action of gases at high pressure arc extinguishing, thereby make the duration of electric arc extremely short, electrode material is substantially without ablation, can be by arc extinction before relay protection of transmission line action, thus avoid line tripping to occur; Described device can be by adjusting main discharge gap distance to adapt to different electric pressures.Fixed support device can adapt to dissimilar insulator string, and gas generating unit adopts sequence starting and easily changes, thereby this device can Reusability, reaches once mounting, repeatedly the object of income.Greatly save investment.And the gas that this device produces is safe from harm to biological, environment, meets environmental requirement.
Although invention has been described; but foregoing description just for illustrative purposes; the invention is not restricted to above-mentioned specific descriptions by reference to the accompanying drawings; those of ordinary skills have the ability that it is not departed to the various changes of spirit of the present invention, and protection scope of the present invention is defined by the claims.
Claims (3)
1. 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus, this device comprises: ground connection lateral electrode fixture (1), ground connection lateral electrode (2), gap in arcing chamber fixture (3), gap in arcing chamber noncontinuous electrode (4), signal pickup assembly (5), insulated enclosure housing (6), gas generating unit (7), hydrophobicity shirt rim (8), gap in arcing chamber puff prot (9), main discharge gap (10), side of wire was electrode (11), side of wire was electrode fixing device (12), embedded iron block (13), kicker magnet (14) and gas generating unit switch sheet metal (15), described 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection inter space is installed in parallel in line insulator string two ends by fixture, it is characterized in that: for connecting wire and forming with wire one end that the reliable side of wire was electrode fixing device (12) that is connected connects main discharge gap (10), be side of wire was electrode (11), reliably be connected gap in arcing chamber fixture (3) with ground connection lateral electrode (2), the other end that is connected to main discharge gap (10) is gap in arcing chamber noncontinuous electrode (4), the ground connection lateral electrode fixture (1) being reliably connected with earth electrode is connected to the other end of ground connection lateral electrode (2), signal pickup assembly (5) is series at gap in arcing chamber noncontinuous electrode (4), three gas generating units (7) are placed near the insulated enclosure housing (6) gap in arcing chamber noncontinuous electrode (4) on-fixed end, and insulated enclosure housing (6) outside is with hydrophobicity shirt rim (8), the high velocity jet air-flow that gas generating unit (7) produces longitudinally acts on electric arc and sprays along gap in arcing chamber puff prot (9).
2. 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus according to claim 1, it is characterized in that, three gas generating units (7) superpose vertically and arrange and embedded iron block (13) is equipped with in inside, three gas generating units (7) sequence starting when thunderbolt occurs transmission line, while falling to kicker magnet (14) position under Action of Gravity Field and its adhesive, and form and be reliably connected with signal pickup assembly (5), high velocity jet gas shock gas generating unit after gas generating unit (7) starts switches sheet metal (15), the necessary condition starting as next gas jet generating means (7).
3. 10～35kV overhead transmission line constraint space gas jet arc extinguishing lightning protection clearance apparatus according to claim 1, it is characterized in that, the gas exhausted material that insulated enclosure housing (6) adopts produces gases at high pressure under high-temperature electric arc effect, discharges after acting on electric arc from gap in arcing chamber puff prot (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110090288.2A CN102737795B (en) | 2011-04-12 | 2011-04-12 | 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110090288.2A CN102737795B (en) | 2011-04-12 | 2011-04-12 | 10-35kV overhead transmission line constraint space injection gas arc extinguishing lightning protection gap apparatus |
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| CN102737795A CN102737795A (en) | 2012-10-17 |
| CN102737795B true CN102737795B (en) | 2014-04-16 |
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| CN103337315B (en) * | 2013-07-03 | 2016-05-04 | 王巨丰 | The device of the lightning protection inter space Insulation Coordination method based on Coulomb force striking |
| CN104240868A (en) * | 2014-10-11 | 2014-12-24 | 国家电网公司 | Line insulator and horn-shaped gap thereof |
| CN104701735B (en) * | 2015-02-10 | 2016-09-14 | 王巨丰 | Repeat thunder and cut arc lightning protection device |
| CN107705941A (en) * | 2017-09-28 | 2018-02-16 | 上海兆邦电力器材有限公司 | For the arc-blowing device on electric power circuit insulator class electrical equipment |
| CN107768048A (en) * | 2017-09-28 | 2018-03-06 | 上海兆邦电力器材有限公司 | Power frequency continued flow arc breaking device |
| DE102017223401B4 (en) | 2017-12-20 | 2019-10-10 | Schunk Carbon Technology Gmbh | Contact unit and method |
| CN111834892B (en) * | 2019-04-15 | 2023-08-11 | 王巨丰 | Sealing method based on lightning protection and arc extinguishing airflow channel interface |
| CN112117070B (en) * | 2019-06-20 | 2022-03-08 | 王巨丰 | Full-span insulation matching method and device for eliminating span central direct flashover |
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| US5283709A (en) * | 1989-12-07 | 1994-02-01 | Hitachi, Ltd. | Lightning arrester on tower for power transmission |
| CN2435822Y (en) * | 2000-07-28 | 2001-06-20 | 中电联北京实业开发总公司电器开关厂 | Combined jet fusing switch arrester |
| CN2896459Y (en) * | 2006-05-29 | 2007-05-02 | 深圳市富诚高压电气有限公司 | Lightning protector |
| CN201260026Y (en) * | 2008-09-28 | 2009-06-17 | 南京顺泰科技有限公司 | Lightning protector with series interval |
| CN202003781U (en) * | 2011-04-12 | 2011-10-05 | 王巨丰 | Constrained space jet gas arc-extinguishing lightning-protection gap device for 10-35 kV overhead transmission line |
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2011
- 2011-04-12 CN CN201110090288.2A patent/CN102737795B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5283709A (en) * | 1989-12-07 | 1994-02-01 | Hitachi, Ltd. | Lightning arrester on tower for power transmission |
| CN2435822Y (en) * | 2000-07-28 | 2001-06-20 | 中电联北京实业开发总公司电器开关厂 | Combined jet fusing switch arrester |
| CN2896459Y (en) * | 2006-05-29 | 2007-05-02 | 深圳市富诚高压电气有限公司 | Lightning protector |
| CN201260026Y (en) * | 2008-09-28 | 2009-06-17 | 南京顺泰科技有限公司 | Lightning protector with series interval |
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