CN103474975A - Lightning-protection nanometer magnet choke device - Google Patents
Lightning-protection nanometer magnet choke device Download PDFInfo
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- CN103474975A CN103474975A CN2013104488861A CN201310448886A CN103474975A CN 103474975 A CN103474975 A CN 103474975A CN 2013104488861 A CN2013104488861 A CN 2013104488861A CN 201310448886 A CN201310448886 A CN 201310448886A CN 103474975 A CN103474975 A CN 103474975A
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Abstract
The invention provides a lightning-protection nanometer magnet choke device. A magnet inside a shell body is formed by combining two semi-circular nanometer magnets of the same diameter and the same thickness, a wire penetrating hole is formed in the center of the two combined semi-circular nanometer magnets, and a bolt connecting block and a bolt combined with the respective semi-circular nanometer magnets and used for fixing the two semi-circular nanometer magnets are manufactured at the two ends of one diameter line of the two combined semi-circular nanometer magnets respectively. The lightning-protection nanometer magnet choke device is an important component of a high-voltage electricity transmission line lightning-protection system, is buckled on an electricity transmission line at the two ends of an insulator chain, makes no electric contact with the electricity transmission line, has no line impedance and power frequency impedance, only has overvoltage impact impedance, has the functions of reflection, isolation, chromatic dispersion and radiation on lightning waves, can effectively restrain the spreading of line small current shielding failure lightning waves and prevent insulator shielding failure flashover, and is easy to install, free of maintenance and detection, low in operation cost and long in service life.
Description
Technical field
The present invention relates to a kind of thunder-lightning nano magnetic choke apparatus, is for important building block of ultra-high-tension power transmission line thunder-lightning system specifically.It is to be fastened on the transmission line at insulator two ends, with transmission line, there is no electrical contact, there is no line impedance, there is no power frequency impedance, only has the overvoltage impact impedance.
Background technology
Thunder and lightning is a kind of electric discharge phenomena of earth atmosphere, normally by electronegative thundercloud, to the electrostatic induction of Earth Surface and make between thundercloud and Earth Surface to have formed capacitor, the electric field strength of this capacitor constantly strengthens along with gathering of thundercloud charge, when its electric field strength has surpassed therebetween the breakdown strength of atmosphere, pulsed discharge between thundercloud and the earth has occurred, and is exactly the said thunderbolts of people.In the thundercloud discharge process, discharging current sharply increases, arrive the moment on ground at lightning, lightning current is up to 200 KA-300KA, maximum current can reach 430 KA, potential difference at the lightning channel two ends can reach volts up to ten thousand, the lightning current place of arrival can cause intense electromagnetic, heat energy and mechanical damage effect, the event of particularly being struck by lightning be random and uncontrollable, so its harm caused is quite serious.For building and ground installation, for exempting from thunderstruck destruction, often on high-lager building, set up Franklin on the shaft tower of ultra-high-tension power transmission line and keep away acusector, by point discharge, guide lightning current to leak into the earth, to protect the safety of facility below it.Yet 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 thunderbolt principle and the better various arresters of lightning protection effect constantly createing.
Yet, the lightning proof situation of ultra-high-tension power transmission line is just seemed to very complicated, depend merely on and set up lightning rod on shaft tower, arrester can not be dealt with problems fully.Wire on overhead transmission line is subject to the attack of direct lightning strike, and the overvoltage complex wave of generation, along circuit diffusion conduction, can produce and destroy the equipment on circuit.Even if escaping by luck, transmission line is not subjected to the attack of direct lightning strike, but also keep away unavoidable thunder and lightning and attack near the ground of transmission line, in the thundercloud discharge process, produce very large overvoltage because of electrostatic induction on overhead transmission line, at its week, all spaces also produced powerful electromagnetic field simultaneously, produce very strong electromagnetic induction overvoltage near overhead transmission line can making, line facility is had to the very destruction of Strong equally, Here it is 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 line to be struck by lightning, and ensure the ultra-high-tension power transmission line security of operation, remain great now research topic.
Summary of the invention
The object of the invention is to: for the user provides a kind of thunder-lightning nano magnetic choke apparatus, it is the important composition parts for ultra-high-tension power transmission line thunder-lightning system, to fasten to be installed on the transmission line at insulator two ends, there is no electrical contact with transmission line, there is no line impedance, there is no power frequency impedance, only have the overvoltage impact impedance, there is remarkable reduction Lightning Over-voltage, effectively weaken the device of lightning current destruction.
Realize purpose of the present invention, adopt following technical proposals:
A kind of thunder-lightning nano magnetic choke apparatus, it is characterized in that: the magnet in its housing, to be combined by the two and half nahlock nano magnetic bodies with same diameter and equal thickness, centre at the two and half nahlock nano magnetic bodies that are combined into one is shaped with the power transmission line inserting hole, 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 the bolt contiguous block and the connecting bolt thereof that are integral, fix two and half nahlock nano magnetic bodies with the half nahlock nano magnetic bodily form separately.
The magnet that described thunder-lightning nano magnetic choke apparatus adopts, to make and take the Fe element as main body by nano-powder, 10-20 nm crystallite state nanometer magnets that a small amount of Ni, Al, Co, Mn element form that adulterate are that to have saturation induction density be that 1.2T, initial permeability are 8 * 10
4, resistivity is 80 μ Ω/cm, at the nanometer magnet that Nodes formation 48-52 μ H equivalence access inductance are installed.
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 nanometer magnet, experiment shows that this nanometer magnet is higher 40-50 times than the magnetic permeability of common ferrimagnet.The choke apparatus that adopts this nano magnetic system to do, be fastened on the transmission line at insulator two ends, owing to transmission line, there is no electrical contact, there is no line impedance, there is no power frequency impedance, only has the overvoltage impact impedance.When the thunderbolt wire is arranged, the compound lightning wave produced is transmitted to this choke apparatus along circuit, it installs the capable ripple transition point that node becomes the lightning wave propagation ducts, to lightning wave effectively reflect, isolation, dispersion and radiation, destroy the existing transmission matching condition that lightning wave transmits in the line, the effectively propagation of the little electric current around shocking of limiting circuitry electric wave, prevent 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 has the overvoltage impact impedance, there is remarkable reduction Lightning Over-voltage, effectively weaken the effect that lightning current destroys.
2. this thunder-lightning nano magnetic choke apparatus is convenient installs: because this thunder-lightning nano magnetic choke apparatus project organization is simple, lightweight volume is little, installs simply, need only correctly be fastened on the circuit assigned address and get final product.
3. this thunder-lightning nanometer magnetic resistance stream Installed puts and can realize non-maintaining, inspection-free survey, has operating cost low, the characteristics of long service life.
The accompanying drawing explanation
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 electric 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 the nano magnetic choke apparatus, the insulation sheath that 3-2 is the power transmission line conductor, 5 is thunder-lightning nano magnetic choke apparatus, 5-1 is the nanometer magnet in the nano magnetic choke apparatus, 5-2 connects the fastening bolt of two corresponding nanometer magnets in the nano magnetic choke apparatus, 5-3 is the bolt contiguous block of fixing two nanometer magnets in the nano magnetic choke apparatus, and 6 is shaft tower, and 7 is lightning receptor, 8 is lightning conducter, and 9 is insulator string.
Embodiment
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, magnet at its engineering plastics housing Inner, to be combined by the two and half nahlock nano magnetic body 5-1 with same diameter and equal thickness, be shaped with the inserting hole of power transmission line 3 in the centre of the two and half nahlock nano magnetic body 5-1 that are combined into one, at the two-end part of the diameter of the two and half nahlock nano magnetic body 5-1 that are combined into one, be shaped with respectively the bolt contiguous block 5-3 and the connecting bolt 5-2 thereof that are integral, fix two and half nahlock nano magnetic body 5-1 with the half nahlock nano magnetic bodily form separately.
The described magnet adopted at nano magnetic choke apparatus housing Inner, to make and take the Fe element as main body by nano-powder, 10-20 nm crystallite state nanometer magnets that a small amount of Ni, Al, Co, Mn element form that adulterate are that to have saturation induction density be that 1.2T, initial permeability are 8 * 10
4, resistivity is 80 μ Ω/cm, at the nanometer magnet that node formation 48-52 μ H equivalence access inductance are installed.
As thunder-lightning nano magnetic choke apparatus, developed 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, reach minimum withstand voltage standard 450KV, the specification requirement of anti-effective amplitude of lightning current 350KA.
example 1:XHZL-L line type thunder-lightning nano magnetic choke apparatus
Diameter: 103mm
Thickness: 35mm
Weight: 1.25kg
Crust of the device: engineering plastics,
Device shell inner magnet: be the nanometer magnet
Its saturation induction density is that 1.2T, high initial magnetoconductivity are 8 * 10
4, resistivity is 80 μ Ω/cm, node is being installed is formed the equivalence access inductance of 48 μ H;
This nanometer magnet is to be made and be take ferro element as main by nano-powder, the 10-20 nm crystallite state nanometer magnet that adulterate a small amount of Cu, Ni, Al, Co, Mn element form;
Be suitable for ultra-high-tension power transmission line and carry the grade of voltage: 35KV/110 KV/220 KV/330 KV
Electrical parameter is:
| Operating frequency (H Z） | 50 | 5k | 1M | 2M | 10M |
| Impedance is not less than (Ω) | - | 1 | 200 | 4000 | 20000 |
example 2:XHZL-T terminal type thunder-lightning nano magnetic choke apparatus
Diameter: 103mm
Thickness: 63 mm
Weight: 2.6kg
Crust of the device: engineering plastics,
Device shell inner magnet: be the nanometer magnet
Its saturation induction density is that 1.2T, high initial magnetoconductivity are 8 * 10
4, resistivity is 80 μ Ω/cm, node is being installed is formed the equivalence access inductance of 52 μ H;
This nanometer magnet is to be made and be take ferro element as main body by nano-powder, the 10-20 nm crystallite state nanometer magnet that adulterate a small amount of Cu, Ni, Al, Co, Mn element form;
Be suitable for ultra-high-tension power transmission line and carry the grade of voltage: 35KV/110 KV/220 KV/330 KV
Electrical parameter is:
| Operating frequency (H Z） | 50 | 5k | 1M | 2M | 10M |
| Impedance is not less than (Ω) | - | 1 | 300 | 5000 | 26000 |
Claims (3)
1. a thunder-lightning nano magnetic choke apparatus, it is characterized in that: at the magnet of its engineering plastics housing Inner, to be combined by the two and half nahlock nano magnetic bodies (5-1) with same diameter and equal thickness, be shaped with the inserting hole of power transmission line (3) in the centre of the two and half nahlock nano magnetic bodies (5-1) that are combined into one, two-end part at a diameter of the two and half nahlock nano magnetic bodies (5-1) that are combined into one, be shaped with respectively with half nahlock nano magnetic body (5-1) separately and form one, fix bolt contiguous block (5-3) and the connecting bolt (5-2) thereof of two and half nahlock nano magnetic bodies (5-1), the magnet that described thunder-lightning nano magnetic choke apparatus housing Inner adopts, to make and take the Fe element as main body by nano-powder, 10-20 nm crystallite state nanometer magnets that a small amount of Ni, Al, Co, Mn element form that adulterate are that to have saturation induction density be that 1.2T, initial permeability are 8 * 10
4, resistivity is 80 μ Ω/cm, at the nanometer magnet that node formation 48-52 μ H equivalence access inductance are installed.
2. according to thunder-lightning nano magnetic choke apparatus claimed in claim 1, its XHZL-L line type thunder-lightning nano magnetic choke apparatus has following characteristics:
Diameter: 103mm,
Thickness: 35mm,
Weight: 1.25kg,
Form the equivalence access inductance of 48 μ H at the installation node,
Minimum withstand voltage standard 450KV,
Anti-effective amplitude of lightning current
350KA,
Operating frequency 50 H
zimpedance is 0; Operating frequency 5k H
zimpedance is not less than 1 Ω; At frequency 1M H
zlower impedance is not less than 20 Ω; At frequency 2M H
zlower impedance is not less than 4000 Ω; Under frequency 10M, impedance is not less than 20000 Ω; Be suitable for ultra-high-tension power transmission line and carry the grade of voltage: 35KV/110 KV/220 KV/330 KV.
3. according to thunder-lightning nano magnetic choke apparatus claimed in claim 1, its XHZL-T terminal type thunder-lightning nano magnetic choke apparatus has following characteristics:
Diameter: 103mm,
Thickness: 63 mm,
Weight: 2.6kg,
Form the equivalence access inductance of 52 μ H at the installation node,
Minimum withstand voltage standard 450KV,
Anti-effective amplitude of lightning current 350KA,
Operating frequency 50 H
zimpedance is 0; Operating frequency 5k H
zimpedance is not less than 1 Ω; At frequency 1M H
zlower impedance is not less than 300 Ω; At frequency 2M H
zlower impedance is not less than 5000 Ω; Under frequency 10M, impedance is not less than 26000 Ω; Be suitable for ultra-high-tension power transmission line and carry the grade of voltage: 35KV/110 KV/220 KV/330 KV.
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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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| CN103474975A true CN103474975A (en) | 2013-12-25 |
| CN103474975B CN103474975B (en) | 2016-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790192A (en) * | 2016-03-14 | 2016-07-20 | 江西华强金源电气有限公司 | Novel vibration damper with lightning shielding failure prevention 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 |
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| 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 |
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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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790192A (en) * | 2016-03-14 | 2016-07-20 | 江西华强金源电气有限公司 | Novel vibration damper with lightning shielding failure prevention function |
| 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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| Publication number | Publication date |
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| CN103474975B (en) | 2016-05-25 |
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