CN103474975B - A kind of thunder-lightning nano magnetic choke apparatus - Google Patents
A kind of thunder-lightning nano magnetic choke apparatus Download PDFInfo
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- CN103474975B CN103474975B CN201310448886.1A CN201310448886A CN103474975B CN 103474975 B CN103474975 B CN 103474975B CN 201310448886 A CN201310448886 A CN 201310448886A CN 103474975 B CN103474975 B CN 103474975B
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Abstract
The present invention provides a kind of thunder-lightning nano magnetic choke apparatus for user, magnet in its housing, to be combined by the two and half nahlock nano magnetic bodies with same diameter and equal thickness, be shaped with this power transmission line inserting hole in the centre of the two and half nahlock nano magnetic bodies that are combined into one, at the two-end part of a diameter of the two and half nahlock nano magnetic bodies that are combined into one, be shaped with respectively integral with the half nahlock nano magnetic bodily form separately, to fix two and half nahlock nano magnetic bodies bolt contiguous block and bolt. It is the important composition parts for ultra-high-tension power transmission line thunder-lightning system, to be fastened on the transmission line of electricity at insulator chain two ends, there is no electrical contact with transmission line of electricity, there is no line impedance, there is no power frequency impedance, only have overvoltage impact impedance, lightning wave is had to reflection, isolation, dispersion and radiation effects, effectively the wave propagation of the little electric current around shocking electricity of limiting circuitry, prevents insulator shielding flashover. Install simply, non-maintaining, inspection-free survey, operating cost is low, long service life.
Description
Technical field
The present invention relates to a kind of thunder-lightning nano magnetic choke apparatus, is for ultra-high-tension power transmission line thunder-lightning system specificallyIn an important building block. It is to be fastened on the transmission line of electricity at insulator two ends, there is no electrical contact with transmission line of electricity,There is no line impedance, there is no power frequency impedance, only have overvoltage impact impedance.
Background technology
Thunder and lightning is a kind of electric discharge phenomena of earth atmosphere, normally by electronegative thundercloud, to the static of Earth SurfaceRespond to and make between thundercloud and Earth Surface to have formed capacitor, the electric-field intensity of this capacitor is along with gathering of thundercloud chargeConstantly strengthen, in the time that its electric-field intensity has exceeded therebetween the breakdown strength of atmosphere, the pulse having occurred between thundercloud and the earth is putElectricity is exactly the said thunderbolts of people. In thundercloud discharge process, discharge current sharply increases, and arrives the moment on ground at lightning,Lightning current is up to 200KA-300KA, and maximum current can reach 430KA, can reach volts up to ten thousand in the potential difference at lightning channel two endsSpy, lightning current place of arrival can cause intense electromagnetic, heat energy and mechanical damage effect, the generation of the event of being particularly struck by lightningBe random and uncontrollable, therefore its harm causing is quite serious. For building and ground installation, for exempting fromThe destruction of thunderbolt, often on high-lager building, set up Franklin on the shaft tower of ultra-high-tension power transmission line and keep away acusector, by tipElectric discharge guiding lightning current leaks into the earth, to protect the safety of facility below it. But its protection zone and scope are very limited, can not make extra-regional place exempt from thunder and lightning and attack. Along with scientific and technological progress, people have different preventing constantly createingThunderbolt principle and the better various arresters of lightning protection effect.
But, the lightning proof situation of ultra-high-tension power transmission line is just seemed to very complicated, depend merely on shaft tower, set up lightning rod,Arrester can not be dealt with problems completely. Wire on overhead transmission line is subject to the attack of direct lightning strike, and the overvoltage of generation is multipleClose ripple along circuit diffusion conduction, can the equipment on circuit be produced and be destroyed. Even if escaping by luck, transmission line of electricity is not subjected to direct lightning strikeAttack, attack near ground transmission line of electricity but also keep away unavoidable thunder and lightning, in thundercloud discharge process, at overhead transmission lineOn road, because electrostatic induction produces very large overvoltage, at its week, all spaces also produced powerful electromagnetic field simultaneously, can make attachedOn near overhead transmission line, produce very strong electromagnetic induction overvoltage, line facility is had to very strong destruction equally, thisIt is exactly indirect lightning strike. Therefore, direct lightning strike, indirect lightning strike are all the major hidden dangers of ultra-high-tension power transmission line safety, how to avoid transmission of electricityCircuit is struck by lightning, and ensures ultra-high-tension power transmission line security of operation, remains great now research topic.
Summary of the invention
The object of the invention is to: for user provides a kind of thunder-lightning nano magnetic choke apparatus, it is for high voltage power transmissionImportant composition parts in line thunder protection electric system are to fasten to be installed on the transmission line of electricity at insulator two ends, with transmission line of electricityThere is no electrical contact, there is no line impedance, there is no power frequency impedance, only have overvoltage impact impedance, there is remarkable reduction and be struck by lightningVoltage, effectively weakens the device of lightning current destruction.
Realize object of the present invention, adopt following technical proposals:
For a thunder-lightning nano magnetic choke apparatus for ultra-high-tension power transmission line thunder-lightning system, the magnetic in its housingBody is to be combined by the two and half nahlock nano magnetic bodies with same diameter and equal thickness, at two that are combined into oneThe centre of half nahlock nano magnetic body is shaped with power transmission line inserting hole, at one of the two and half nahlock nano magnetic bodies that are combined into oneThe two-end part of bar diameter, be shaped with respectively integral with the half nahlock nano magnetic bodily form separately, fix two and half nahlock nano magnetic bodiesBolt contiguous block and connecting bolt thereof.
It is characterized in that: the magnet that described thunder-lightning nano magnetic choke apparatus adopts is to make the unit with Fe by nano-powderElement is main body, and the 10-20nm crystallite state nanometer magnet of adulterate a small amount of Ni, Al, Co, Mn element composition, is to have saturation inductionIntensity is that 1.2T, initial permeability are 8 × 104Prosperous/rice, resistivity is 80 μ Ω/cm, and Nodes formation 48-52 μ is being installedThe nanometer magnet of H equivalence access inductance.
The present invention protects the principle of ultra-high-tension power transmission line safety to be: because the basic module of this device is described nano magneticBody, experiment shows that this nanometer magnet than the high 40-50 of the magnetic conductivity of common ferrimagnet doubly. Adopt this nano magnetic systemThe choke apparatus of doing, is fastened on the transmission line of electricity at insulator two ends, owing to there is no electrical contact with transmission line of electricity, there is no circuitImpedance, does not have power frequency impedance, only has overvoltage impact impedance. In the time having thunderbolt wire, the compound lightning wave producing is along lineRoad is transmitted to this choke apparatus, and it installs node becomes the row ripple transition point of lightning wave propagation ducts, and lightning wave is hadReflection, isolation, dispersion and the radiation of effect, destroy the existing transmission matching condition that lightning wave transmits in the line, can effectively suppressThe wave propagation of the little electric current around shocking electricity of circuit, prevents insulator shielding flashover.
The outstanding advantages of nano magnetic choke apparatus of the present invention is:
1. this thunder-lightning nano magnetic choke apparatus is non-access type: it is to be fastened on the circuit at insulator two ends,There is no electrical contact with circuit, there is no line impedance, there is no power frequency impedance, only have overvoltage impact impedance, there is remarkable reductionLightning Over-voltage, effectively weakens the effect that lightning current destroys.
2. this thunder-lightning nano magnetic choke apparatus is convenient installs: due to this thunder-lightning nano magnetic choke apparatus design knotStructure is simple, and lightweight volume is little, installs simply, need only correctly be fastened on circuit assigned address.
3. this thunder-lightning nanometer magnetic resistance stream Installed puts and can realize non-maintaining, inspection-free survey, has operating cost low, uses the longevityThe feature that life is long.
Brief description of the drawings
Fig. 1 is thunder-lightning nano magnetic choke apparatus structural representation of the present invention
Fig. 2 is thunder-lightning nano magnetic choke apparatus equivalent circuit of the present invention and node access schematic diagram
Fig. 3 is thunder-lightning nano magnetic choke apparatus of the present invention installation site schematic diagram
Mark in figure: 3 is high voltage transmission line, 3-1 is the power transmission line conductor in nano magnetic choke apparatus, 3-2 is power transmission lineThe insulation sheath of conductor, 5 is thunder-lightning nano magnetic choke apparatus, 5-1 is the nanometer magnet in nano magnetic choke apparatus, 5-2For connecting the fastening bolt of two corresponding nanometer magnets in nano magnetic choke apparatus, 5-3 fixes two in nano magnetic choke apparatusThe bolt contiguous block of piece nanometer magnet, 6 is shaft tower, and 7 is lightning receptor, and 8 is lightning conducter, and 9 is insulator chain.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, thunder-lightning nano magnetic choke apparatus of the present invention is described in detail:
A kind of thunder-lightning nano magnetic choke apparatus 5 being arranged on ultra-high-tension power transmission line, its engineering plastics housing Inner'sMagnet is to be combined by the two and half nahlock nano magnetic body 5-1 with same diameter and equal thickness, what be combined into oneThe centre of two and half nahlock nano magnetic body 5-1 is shaped with the inserting hole of this power transmission line 3, two and half nahlocks that are being combined into oneThe two-end part of a diameter of nanometer magnet 5-1, be shaped with respectively integral with the half nahlock nano magnetic bodily form separately, fix twoBolt contiguous block 5-3 and the connecting bolt 5-2 thereof of half nahlock nano magnetic body 5-1.
The described magnet adopting at nano magnetic choke apparatus housing Inner, is to be made up taking Fe element as main body of nano-powder,The adulterate 10-20nm crystallite state nanometer magnet of a small amount of Ni, Al, Co, Mn element composition is to have saturation induction density to be1.2T, initial permeability are 8 × 104Prosperous/rice, resistivity is 80 μ Ω/cm, and node formation 48-52 μ H equivalence access is being installedThe nanometer magnet of inductance.
As the thunder-lightning nano magnetic choke apparatus being used on ultra-high-tension power transmission line, develop the product of two kinds of models:XHZL-L line type and XHZL-T terminal type, can meet standard GB/T 50169 and power industry standard DL/T620, reachesLow withstand voltage standard 450KV, the technical requirement of anti-effective amplitude of lightning current 350KA.
Example 1: be arranged on the XHZL-L line type thunder-lightning nano magnetic choke apparatus on ultra-high-tension power transmission line
Diameter: 103mm
Thickness: 35mm
Weight: 1.25kg
Crust of the device: engineering plastics,
Device shell inner magnet: be nanometer magnet
Its saturation induction density is that 1.2T, high initial magnetoconductivity are 8 × 104Prosperous/rice, resistivity are 80 μ Ω/cm,The equivalence access inductance that node forms 48 μ H is installed;
This nanometer magnet is to be made up taking ferro element as main of nano-powder, adulterate a small amount of Cu, Ni, Al, Co, Mn element composition10-20nm crystallite state nanometer magnet;
Be suitable for ultra-high-tension power transmission line and carry the grade of voltage: 35KV/110KV/220KV/330KV
Electrical parameter is:
| Operating frequency (HZ） | 50 | 5k | 1M | 2M | 10M |
| Impedance is not less than (Ω) | - | 1 | 200 | 4000 | 20000 |
Example 2: be arranged on the XHZL-T terminal type thunder-lightning nano magnetic choke apparatus on ultra-high-tension power transmission line
Diameter: 103mm
Thickness: 63mm
Weight: 2.6kg
Crust of the device: engineering plastics,
Device shell inner magnet: be nanometer magnet
Its saturation induction density is that 1.2T, high initial magnetoconductivity are 8 × 104Prosperous/rice, resistivity are 80 μ Ω/cm,The equivalence access inductance that node forms 52 μ H is installed;
This nanometer magnet is to be made up taking ferro element as main body of nano-powder, adulterate a small amount of Cu, Ni, Al, Co, Mn element setThe 10-20nm crystallite state nanometer magnet becoming;
Be suitable for ultra-high-tension power transmission line and carry the grade of voltage: 35KV/110KV/220KV/330KV
Electrical parameter is:
| Operating frequency (HZ） | 50 | 5k | 1M | 2M | 10M |
| Impedance is not less than (Ω) | - | 1 | 300 | 5000 | 26000 |
Claims (3)
1. for the thunder-lightning nano magnetic choke apparatus of ultra-high-tension power transmission line thunder-lightning system, at its engineering plastics housingThe magnet of Inner, is to be combined by the two and half nahlock nano magnetic bodies (5-1) with same diameter and equal thickness, is being combined intoThe centre of two and half nahlock nano magnetic bodies (5-1) of one is shaped with the inserting hole of this power transmission line (3), what be combined into oneThe two-end part of a diameter of two and half nahlock nano magnetic bodies (5-1), is shaped with respectively and half nahlock nano magnetic body (5-1) separatelyForm one, the bolt contiguous block (5-3) of fixing two and half nahlock nano magnetic bodies (5-1) and connecting bolt (5-2) thereof; Its featureBe: the magnet that described thunder-lightning nano magnetic choke apparatus housing Inner adopts is to be made up taking Fe element as main body of nano-powder,The adulterate 10-20nm crystallite state nanometer magnet of a small amount of Ni, Al, Co, Mn element composition is to have saturation induction density to be1.2T, initial permeability are 8 × 104Prosperous/rice, resistivity are 80 μ Ω/cm, node formation 48-52 μ H equivalence access are being installedThe nanometer magnet of inductance.
2. according to the thunder-lightning nano magnetic choke apparatus for ultra-high-tension power transmission line thunder-lightning system described in claim 1, itsBe characterised in that: be arranged on the XHZL-L line type thunder-lightning nano magnetic choke apparatus on ultra-high-tension power transmission line, there is following characteristics:
Diameter: 103mm,
Thickness: 35mm,
Weight: 1.25kg,
Form the equivalence access inductance of 48 μ H at installation node,
Minimum withstand voltage standard 450KV,
Anti-effective amplitude of lightning current 350KA,
Operating frequency 50HZImpedance is 0; Operating frequency 5kHZImpedance is not less than 1 Ω; At frequency 1MHZLower impedance is not less than 20 Ω;At frequency 2MHZLower impedance is not less than 4000 Ω; At frequency 10MHZLower impedance is not less than 20000 Ω; Be suitable for ultra-high-tension power transmission line defeatedThe grade that power transmission is pressed: 35KV/110KV/220KV/330KV.
3. according to the thunder-lightning nano magnetic choke apparatus for ultra-high-tension power transmission line thunder-lightning system described in claim 1, itsBe characterised in that: be arranged on the XHZL-T terminal type thunder-lightning nano magnetic choke apparatus on ultra-high-tension power transmission line, there is following characteristics:
Diameter: 103mm,
Thickness: 63mm,
Weight: 2.6kg,
Form the equivalence access inductance of 52 μ H at installation node,
Minimum withstand voltage standard 450KV,
Anti-effective amplitude of lightning current 350KA,
Operating frequency 50HZImpedance is 0; Operating frequency 5kHZImpedance is not less than 1 Ω; At frequency 1MHZLower impedance is not less than 300Ω; At frequency 2MHZLower impedance is not less than 5000 Ω; At frequency 10MHZLower impedance is not less than 26000 Ω; Be suitable for high voltage transmission lineThe grade of voltage: 35KV/110KV/220KV/330KV is carried on road.
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| CN201310448886.1A CN103474975B (en) | 2013-09-28 | 2013-09-28 | A kind of thunder-lightning nano magnetic choke apparatus |
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| CN201310448886.1A CN103474975B (en) | 2013-09-28 | 2013-09-28 | A kind of thunder-lightning nano magnetic choke apparatus |
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| CN103474975B true CN103474975B (en) | 2016-05-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105790192B (en) * | 2016-03-14 | 2018-01-02 | 南昌大学 | A kind of Novel shockproof hammer with thunder-lightning shielding function |
| CN114678850A (en) * | 2022-03-15 | 2022-06-28 | 昆明理工大学 | Magnetic ring device for suppressing lightning waves |
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| US5744755A (en) * | 1996-10-31 | 1998-04-28 | Marilyn A. Gasque | Lightning retardant cable |
| CN2854890Y (en) * | 2005-11-17 | 2007-01-03 | 郭玉章 | Integral lightning-protection system for power output line |
| CN201171150Y (en) * | 2007-12-30 | 2008-12-24 | 山东迅实电气有限公司 | Overvoltage protector for open-resistant lever for avoiding wire from breaking due to lightning stroke |
| CN102468648A (en) * | 2010-11-10 | 2012-05-23 | 程燕铷 | Electromagnetic current impeder |
| CN102969105A (en) * | 2011-08-31 | 2013-03-13 | 株式会社东芝 | Magnetic material, manufacture method of same, and sensor component |
| CN203086127U (en) * | 2012-12-07 | 2013-07-24 | 国家电网公司 | Magnetic choked flow device |
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2013
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|---|---|---|---|---|
| US5744755A (en) * | 1996-10-31 | 1998-04-28 | Marilyn A. Gasque | Lightning retardant cable |
| CN2854890Y (en) * | 2005-11-17 | 2007-01-03 | 郭玉章 | Integral lightning-protection system for power output line |
| CN201171150Y (en) * | 2007-12-30 | 2008-12-24 | 山东迅实电气有限公司 | Overvoltage protector for open-resistant lever for avoiding wire from breaking due to lightning stroke |
| CN102468648A (en) * | 2010-11-10 | 2012-05-23 | 程燕铷 | Electromagnetic current impeder |
| CN102969105A (en) * | 2011-08-31 | 2013-03-13 | 株式会社东芝 | Magnetic material, manufacture method of same, and sensor component |
| CN203086127U (en) * | 2012-12-07 | 2013-07-24 | 国家电网公司 | Magnetic choked flow device |
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