CN107592784A - A kind of electromagnetic impact means of defence and system - Google Patents
A kind of electromagnetic impact means of defence and system Download PDFInfo
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- CN107592784A CN107592784A CN201710945947.3A CN201710945947A CN107592784A CN 107592784 A CN107592784 A CN 107592784A CN 201710945947 A CN201710945947 A CN 201710945947A CN 107592784 A CN107592784 A CN 107592784A
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Abstract
A kind of electromagnetic impact means of defence, including：S1, the electromagnetic wave traveling wave to invasion carry out first and released over the ground；S2, by the device that increase traveling wave wave resistance is sent to by the first electromagnetic wave traveling wave for releasing over the ground to reflect and the smooth electromagnetic wave traveling wave；S3, the electromagnetic wave traveling wave progress second after reflecting and be smooth is released over the ground；S4, the electromagnetic wave traveling wave progress EMC filtering to being released over the ground by second.A kind of electromagnetic impact guard system, including：First bleeder, the slow device of electromagnetic wave traveling wave, second bleeder and EMC filter over the ground over the ground.Implement the electromagnetic impact means of defence and system of the present invention, increase traveling wave impedance to make traveling wave reflect by increasing the device of traveling wave wave resistance, solve response problems at different levels, improve discharge voltage over the ground and then reduce the requirement to grounding resistance.
Description
Technical field
The present invention relates to anti-electromagnetic interference field, more specifically to a kind of electromagnetic impact means of defence and system.
Background technology
The electromagnetic protection of prior art generally includes lightning protection and Electro Magnetic Compatibility (Electro Magnetic
Compatibility, EMC) protection.Lightning protection is typically with high pressures such as direct lightning strike, induced lightening, surge, switching overvoltages, greatly
Electric current, the electromagnet phenomenon of big energy are main protection object.And Electro Magnetic Compatibility protection is typically with the height of low energy, wide spectrum
Frequency interference signal is main protection object.The electromagnetic impact means of defence of prior art typically first carry out at least three times more than
Multistage is released over the ground, and EMC filtering is then carried out in equipment.But there is problems with this electromagnetic impact means of defence.
Firstly, there are the response time problems at different levels released.Rear class module of releasing is sensitiveer in general, response speed
It hurry up, but ability to bear is poor.When thunder and lightning electromagnetic running wave passes through wire spread, the possible mould that will be released prior to prime of post-module
Block is turned on and damaged rapidly.Ultimately result in whole system shielding failure.
Secondly as the requirement for energy of releasing over the ground, the requirement to grounded screen is very high, typically requires the ground connection electricity of grounded screen
Resistance is less than 10 Ω, and the manufacturing cost and maintenance cost of such grounding resistance are all very high.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided one kind can solve respectively
The problem of coordinating is responded between level, and can reduces the electromagnetic impact means of defence and system of the requirement to grounding resistance.
The technical solution adopted for the present invention to solve the technical problems is：A kind of electromagnetic impact means of defence is constructed, including：
S1, the electromagnetic wave traveling wave to invasion carry out first and released over the ground；
S2, by the device that increase traveling wave wave resistance is sent to by the first electromagnetic wave traveling wave for releasing over the ground to reflect and smoothly
The electromagnetic wave traveling wave；
S3, the electromagnetic wave traveling wave progress second after reflecting and be smooth is released over the ground；
S4, the electromagnetic wave traveling wave progress EMC filtering to being released over the ground by second.
In electromagnetic impact means of defence of the present invention, the step S2 includes：
S21, the slow device of electromagnetic wave traveling wave is used to transmit the electromagnetic wave traveling wave so that the electromagnetic wave traveling wave is reflected with again
Secondary progress first discharges over the ground；
S22, the slow device of the electromagnetic wave traveling wave is used to transmit the electromagnetic wave traveling wave so that the electromagnetic wave traveling wave to be carried out
Smooth and deceleration.
In electromagnetic impact means of defence of the present invention, the slow device of electromagnetic wave traveling wave include hollow conductive pipe,
The magnet being arranged on inside the hollow conductive pipe, it is arranged between the hollow conductive pipe and the magnet with the magnetic that insulate
First insulating sleeve of body and the hollow conductive pipe, the magnetic sleeve pipe set around the hollow conductive pipe, and be arranged on
With the second insulation of the insulate hollow conductive pipe and the magnetic sleeve pipe between the magnetic sleeve pipe and the hollow conductive pipe
Sleeve pipe.
In electromagnetic impact means of defence of the present invention, the hollow conductive pipe is to open up continuous helical groove on outer wall
Cylindrical metal tube；The magnet is the central bar magnet for being located in the cylindrical metal tube, the cylindrical metal tube
End walls center the first through hole passed through for the bar magnet is set；Around described the in the end walls of the cylindrical metal tube
One through hole is placed equidistant multiple second through holes.
In electromagnetic impact means of defence of the present invention, the slow device of electromagnetic wave traveling wave further comprises being arranged on
The fixedly connected part at the hollow conductive pipe both ends；The fixedly connected part includes being set in the hollow conductive pipe both ends with exhausted
Annular insulation Jie's piece of hollow conductive pipe described in edge and the magnetic sleeve pipe, and the conduction being fixed in the magnetic sleeve pipe are consolidated
Fixed lid；Multiple third through-holes are set on the outer wall of the conductive fixed cover.
In electromagnetic impact means of defence of the present invention, the step S4 includes：
S41, filtered to carrying out the first bypass by the second electromagnetic wave traveling wave released over the ground；
S42, common mode filtering is carried out to the electromagnetic wave traveling wave by the first bypass filtering；
S43, the second bypass filtering is carried out to the electromagnetic wave traveling wave by common mode filtering；
S44, differential mode filtering is carried out to the electromagnetic wave traveling wave by the second bypass filtering.
In electromagnetic impact means of defence of the present invention, relative to the earth to described in the step S1 and step S3
Electromagnetic wave traveling wave is released over the ground, and relative place of working carries out bypass filtering to the electromagnetic wave traveling wave in the step S4.
It is to construct a kind of electromagnetic impact guard system that the present invention, which solves another technical scheme that its technical problem uses, bag
Include：
First bleeder over the ground, released over the ground for carrying out first to the electromagnetic wave traveling wave of invasion；
The slow device of electromagnetic wave traveling wave, for simultaneously smooth described to by the first electromagnetic wave traveling wave released over the ground reflect
Electromagnetic wave traveling wave；
Second bleeder over the ground, let out over the ground for carrying out second to the electromagnetic wave traveling wave after reflecting and be smooth
Put；
EMC filters, for carrying out EMC filtering by the second electromagnetic wave traveling wave released over the ground.
In electromagnetic impact guard system of the present invention, the slow device of electromagnetic wave traveling wave include hollow conductive pipe,
The magnet being arranged on inside the hollow conductive pipe, it is arranged between the hollow conductive pipe and the magnet with the magnetic that insulate
First insulating sleeve of body and the hollow conductive pipe, the magnetic sleeve pipe set around the hollow conductive pipe, and be arranged on
With the second insulation of the insulate hollow conductive pipe and the magnetic sleeve pipe between the magnetic sleeve pipe and the hollow conductive pipe
Sleeve pipe.
In electromagnetic impact guard system of the present invention, the hollow conductive pipe is to open up continuous helical groove on outer wall
Cylindrical metal tube；The magnet is the central bar magnet for being located in the cylindrical metal tube, the cylindrical metal tube
End walls center the first through hole passed through for the bar magnet is set；Around described the in the end walls of the cylindrical metal tube
One through hole is placed equidistant multiple second through holes.
Implement the electromagnetic impact means of defence and system of the present invention, hindered by increasing the device of traveling wave wave resistance to increase traveling wave
Resist and then make traveling wave reflect, solve response problems at different levels, improve discharge voltage over the ground and then reduce to grounding resistance
Requirement.Further, by setting the slow device of electromagnetic wave traveling wave steep to increase electromagnetic wave traveling wave impedance, smooth waveform
Spend and electromagnetic wave traveling wave of slowing down, released over the ground so that just carrying out second after completion of being released on the first ground, and then more
Ideally solve response problems at different levels, its effect can reduce the 3rd and release over the ground step, without influenceing protection effect.Again
Further, by setting place of working and the earth, interfering between two kinds of electromagnetic protections is avoided.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the flow chart of the first embodiment of the electromagnetic impact means of defence of the present invention；
Fig. 2 is the flow chart of the second embodiment of the electromagnetic impact means of defence of the present invention；
Fig. 3 is the Structure explosion diagram for the slow device of electromagnetic wave traveling wave that the electromagnetic impact means of defence shown in Fig. 2 uses；
Fig. 4 is the front view of the cylindrical metal tube of the slow device of electromagnetic wave traveling wave shown in Fig. 3；
Fig. 5 is the oblique view of the cylindrical metal tube of the slow device of electromagnetic wave traveling wave shown in Fig. 3；
Fig. 6 is the theory diagram of the first embodiment of the electromagnetic impact guard system of the present invention；
Fig. 7 is the theory diagram of the second embodiment of the electromagnetic impact guard system of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 is the flow chart of the first embodiment of the electromagnetic impact means of defence of the present invention.As shown in figure 1, in step S1
In first carried out to the electromagnetic wave traveling wave of invasion release over the ground.In the present invention, such as can be let out over the ground using arrester
Put.For example, the arrester can be piezo-resistance, electric discharge ligament arrester, Zinc-Oxide Arrester, ceramic discharge tube, transient state
Suppress diode, semiconductor discharge tube etc. device or its various combination.
In step s 2, the device of increase traveling wave wave resistance will be sent to by the first electromagnetic wave traveling wave released over the ground with anti-
Penetrate and the smooth electromagnetic wave traveling wave.In step s 2, the wire or cable of electromagnetic wave traveling wave can be propagated by adjusting
The dielectric constant of dielectric and the means of relative permeability, to increase traveling wave impedance and reduce the velocity of wave of traveling wave, its principle
It is as follows：
Spread speed v of the electromagnetic wave traveling wave in wire be：
In above formula：
C is the light velocity, c=3 × 108Meter per second.
εrFor the relative dielectric constant of wire surrounding medium.
μrFor the relative permeability of wire surrounding medium.
By above formula it is recognised that spread speed of the electromagnetic wave traveling wave in wire, material, length, sectional area with wire,
Inductance, distribution capacity etc. are irrelevant, only it is relevant with the characteristic of the dielectric around wire, more particularly only with insulation
The relative dielectric constant ε of mediumrWith relative permeability μrIt is relevant.
So, wave impedance Z of the electromagnetic wave traveling wave in wire is：
ε in above formula0--- permittivity of vacuum；
εr--- relative dielectric constant；
μ0--- space permeability；
μr--- relative permeability；
hd--- wire average height over the ground；
R --- wire radius.
And in existing equipment circuit, the parameter such as the radius of wire, height is constant, therefore wave impedance formula can letter
Chemical conversion：
Therefore deduce that：In the case where wire has determined, influence the characteristic of wave impedance during traveling wave also only and
The relative dielectric constant ε of dielectricrWith relative permeability μrIt is relevant.Therefore, leading for electromagnetic wave traveling wave can be propagated by adjusting
The dielectric constant of the dielectric of line or cable and the means of relative permeability, to increase traveling wave impedance and reduce traveling wave
Velocity of wave.
In step s 2, continue to propagate along wire by the first electromagnetic wave traveling wave released over the ground, at this moment when it is passed
When being sent to the device of increase traveling wave wave resistance, because the wave impedance of electromagnetic wave traveling wave increases suddenly, electromagnetic wave traveling wave can be sent out here
Raw traveling wave reflection effect, makes the electromagnetic wave traveling wave of incidence prolong former propagation path backtracking, such electromagnetic wave traveling wave will return
To the first vent position over the ground, at this moment the electromagnetic wave traveling wave by reflection and incident electromagnetic wave traveling wave will produce superposition, so
Its voltage-to-ground in the first vent position over the ground will be improved so that first over the ground bleeder be more prone to conducting to carry out pair
Release on ground.Also, gentle effect is produced because the wave impedance of electromagnetic wave traveling wave increases its waveform steepness to electromagnetic wave traveling wave, i.e.,
The waveform steepness of electromagnetic wave traveling wave is reduced, this releases and filtered very big benefit again to rear class.In the excellent of the present invention
Select in embodiment, while the spread speed of electromagnetic wave traveling wave can be reduced, make it there is time enough waiting dress of once releasing
Put it is fully on after, can just travel at secondary bleeder, so can ideally solve the problems, such as at different levels response orders.
Its effect can cancel third level bleeder completely, without influenceing protection effect.Fig. 3-5 shows the increasing that can be used as the present invention
The slow device of electromagnetic wave traveling wave of the device of big traveling wave wave resistance.Certainly, in other preferred embodiments of the present invention, can also use
The device of others increase traveling wave wave resistance.
In step s3, second is carried out to the electromagnetic wave traveling wave after reflecting and be smooth to release over the ground.In this hair
In bright, such as it can be released over the ground using arrester.For example, the arrester can be piezo-resistance, the ligament that discharges is kept away
Thunder device, Zinc-Oxide Arrester, ceramic discharge tube, Transient Suppression Diode, semiconductor discharge tube etc. device or its various combination.
In step s 4, to carrying out EMC filtering by the second electromagnetic wave traveling wave released over the ground.In the present invention, can be with
EMC filtering is carried out using any of EMC filtering methods in this area.In a preferred embodiment of the invention, by EMC
After filtering, electromagnetic interference can be reduced to the amplitude that later stage module can be born.It now can further be supplied to the later stage
Module.
Implement the present invention electromagnetic impact means of defence, by increase the device of traveling wave wave resistance increase traveling wave impedance and then
Make traveling wave reflect, solve response problems at different levels, improve discharge voltage over the ground and then reduce the requirement to grounding resistance.
Fig. 2 is the flow chart of the second embodiment of the electromagnetic impact means of defence of the present invention.As shown in Fig. 2 in step S1
In first carried out to the electromagnetic wave traveling wave of invasion release over the ground.In the present invention, such as can be entered relative to the earth using arrester
Row is released over the ground.For example, the arrester can be piezo-resistance, electric discharge ligament arrester, Zinc-Oxide Arrester, ceramic discharge
Pipe, Transient Suppression Diode, semiconductor discharge tube etc. device or its various combination.
In step s 2, the slow device of electromagnetic wave traveling wave is used to transmit the electromagnetic wave traveling wave so that the electromagnetic wave traveling wave is anti-
Penetrate and discharged over the ground with carrying out first again.In step s3, the electromagnetic wave row is transmitted using the slow device of the electromagnetic wave traveling wave
Ripple by the electromagnetic wave traveling wave to carry out smooth and slow down.Fig. 3-5 shows what the electromagnetic impact means of defence shown in Fig. 2 used
The slow device of electromagnetic wave traveling wave.
As in Figure 3-5, the preferable slow device of electromagnetic wave traveling wave, including：Hollow conductive pipe 1, it is arranged on described hollow lead
Magnet 4 inside fulgurite 1, with the magnet 4 and described of insulating between being arranged on the hollow conductive pipe 1 and the magnet 4
First insulating sleeve 5 of hollow conductive pipe 1, the magnetic sleeve pipe 3 set around the hollow conductive pipe 1, and be arranged on described
With the second insulation of the insulate hollow conductive pipe 1 and the magnetic sleeve pipe 3 between magnetic sleeve pipe 3 and the hollow conductive pipe 1
Sleeve pipe 2.
As in Figure 3-5, the hollow conductive pipe 1 can be formed by one section of hollow cylindrical metal tube milling, outside it
Continuous helical groove 13 is equidistantly opened up on wall, so as to form helix conductor structure.Forming this architectural feature can be more favourable
In the intrinsic inductance amount of increase hollow conductive pipe 1, so as to improve the impedance to electromagnetic running wave.And hollow by this structure is led
Fulgurite 1 is used as electric conductor, and its sectional area is easy to do the application scenario for greatly, being highly suitable for high current.Certainly the present invention's
In other preferred embodiments, the helicla flute 13 can also Unequal distance setting.In addition, those skilled in the art know, can use
Other any conductive materials construct the hollow conductive pipe 1.In addition, in other preferred embodiments of the present invention, this is hollow
The outer wall of contact tube 1 can be smooth, and equidistant or Unequal distance can also be set to set helical raised to be formed thereon
Hollow worm gear.
As shown in figure 3, the magnet 4 is preferably the bar magnet being located in the hollow conductive pipe 1.The hollow conductive pipe
1 center of end walls 11 sets center through hole 14 so that the bar magnet passes through.Also enclosed in the end walls 11 of the hollow conductive pipe 1
Multiple periphery through holes 12 are placed equidistant around center through hole 14.Certainly, in the simplification embodiment of the present invention, it is convenient to omit these weeks
Side through hole 12, and magnet 4 can be arranged in any other manner inside the hollow conductive pipe 1, and it can be any
Shape.In the present invention, it is preferred to using strong bar magnet as magnet 4.
As shown in figure 3, first insulating sleeve 5 can be set on the magnet 4 with the magnet 4 and described of insulating
Hollow conductive pipe 1.In other preferred embodiments of the present invention, other modes can be used, for example are wrapped up, are surround, sealing etc.
Other any modes keep apart magnet 4 and hollow conductive pipe 1.It is preferred that using the insulating materials of high-k, such as be situated between
Common plasticses of the electric constant 2~4 or so, dielectric constant make first insulating sleeve 5 in 6~8 or so ceramic material.
It is, of course, also possible to using the material with other dielectric constants, those skilled in the art can be selected according to actual conditions.
Further as shown in figure 3, the second insulation tube 2 can be equally set in the hollow conductive pipe 1 with described in insulation
Hollow conductive pipe 1 and the magnetic sleeve pipe 3.In other preferred embodiments of the present invention, other modes can be used, for example wrap
Wrap up in, surround, other any modes such as sealing are by the hollow conductive pipe 1 and the magnetic sleeve pipe 3.It is preferred that use high-k
Insulating materials, such as dielectric constant makes in 2~4 or so common plasticses, dielectric constant in 6~8 or so ceramic material
Make second insulating sleeve 2.It is, of course, also possible to using the material with other dielectric constants, those skilled in the art can root
Selected according to actual conditions.
Further as shown in figure 3, magnetic sleeve pipe 3 is preferably to be located at the cylindrical sleeve outside the second insulation tube 2.When
So, in other preferred embodiments of the present invention, the magnetic sleeve pipe 3 can also use other any shapes.It is preferred that using height
The material of magnetic conductivity, such as amorphous, nanocrystalline, ferrite, iron powder core material make the magnetic sleeve pipe 3, those skilled in the art
Can specifically it be selected according to actual conditions.
Further as shown in figure 3, in the present embodiment, include being arranged on the both ends of hollow conductive pipe 1 so as to fixation
Whole equipment and the fixedly connected part 6 for being connected it with external interface.Certainly, in the simplification embodiment of the present invention, can save
The slightly fixedly connected part 6.As shown in figure 1, the fixedly connected part includes annular insulation Jie piece 62 and conductive fixed cover 61.The annular
Insulation Jie piece 62 is used to insulate the hollow conductive pipe 1 with the magnetic sleeve pipe 3 to prevent both from electrically connecting.Annular insulation is situated between
Piece 62 can be made of any insulating materials.Certainly, in other embodiments of the invention, the exhausted of other shapes can also be used
Edge Jie's piece, if be shaped to be adapted to the hollow conductive pipe 1 and the magnetic sleeve pipe 3, therefore can insulate it is described in
Empty contact tube 1 is with the magnetic sleeve pipe 3 to prevent both from electrically connecting.The conductive fixed cover 61 is fixed on the magnetic sheath
Pipe 3 is easy to hollow conductive pipe 1 to be electrically connected with external interface to fasten whole equipment.Conductive fixed cover 61 can preferably use
The metal connecting sheet of multiple through holes is set.The multiple through hole can be adapted to each through hole in hollow conductive pipe 1.
Composite construction of the invention by magnet+insulating sleeve+conductor+insulating sleeve+magnetic sleeve pipe, while improve electromagnetism
The dielectric constant and relative permeability of the conductor surrounding medium of ripple traveling wave, can reduce electromagnetic wave traveling wave speed and waveform steepness.
Below in conjunction with the slow device of electromagnetic wave traveling wave shown in Fig. 3, its principle is described as follows：
Spread speed v of the electromagnetic wave traveling wave in wire be：
In above formula：
C is the light velocity, c=3 × 108Meter per second.
εrFor the relative dielectric constant of wire surrounding medium.
μrFor the relative permeability of wire surrounding medium.
By above formula it is recognised that spread speed of the electromagnetic wave traveling wave in wire, material, length, sectional area with wire,
Inductance, distribution capacity etc. are irrelevant, only it is relevant with the characteristic of the dielectric around wire, more particularly only with insulation
The relative dielectric constant ε of mediumrWith relative permeability μrIt is relevant.
If traveling wave is to lead above-the-line promotion overhead, dielectric is air around wire, the relative dielectric of air
Constant εr≈ 1, relative permeability μr≈ 1, therefore v ≈ c, i.e. the spread speed of traveling wave is basically the light velocity.If it is intended to reduce
Spread speed of the traveling wave in certain section of conductor, can also may be used reaching by way of changing high-k ε r dielectric
Reached by improving around conductor in a manner of relativepermeabilityμr.
If we except want reduce traveling wave spread speed, also want to reduce traveling-wave waveform steepness.At this moment will try
Increase the impedance in transmission path.
So, wave impedance Z of the electromagnetic wave traveling wave in wire is：
ε in above formula0--- permittivity of vacuum；
εr--- relative dielectric constant；
μ0--- space permeability；
μr--- relative permeability；
hd--- wire average height over the ground；
R --- wire radius.
From above formula, wave impedance Z is not only relevant with the relative dielectric constant ε r of dielectric and relativepermeabilityμr, also
Relevant with the distribution character of conductor, the radius r (circular cross-section conductor) of conductor, the sectional area even position of conductor over the ground can also produce
It is raw to influence.
It is excessive that this appears to variable, but from the point of view of engineering viewpoint, since traveling wave can be used as propagation by conductor
Path, then the presence of inevitable the having determined property of wire, then its parameter whether sectional area, radius and the distance on ground
Etc. be all to determine, will not also produce too big change, this is determined by the natural quality of object.
So, can be wire radius r, wire average height h over the ground in our practical engineering applicationsdOne is regarded as etc. parameter
Individual constant is handled.At this moment ε0、μ0、hd, r be all constant, we can be replaced with a constant coefficient K.
Order
So wave impedance formula can be simplified to：
Therefore deduce that：In the case where conductor has determined, influence the characteristic of wave impedance during traveling wave also only and
The relative dielectric constant ε of dielectricrWith relative permeability μrIt is relevant.
Analyzed more than, a kind of slow device of electromagnetic wave traveling wave can be constructed, wherein providing electromagnetism by one section of conductor
Ripple traveling wave path, the medium around conductor can carry out traveling wave ripple by adjusting relative dielectric constant ε r and relativepermeabilityμr
The adjustment of speed and wave impedance.
ByUnderstand, as long as selection εr=4 dielectric, even if working as μrWhen=1, v=also can obtain
0.5c can namely be reduced to the speed of electromagnetic running wave the half of the light velocity.And by increasing μrNumerical value can play it is bigger
Effect, especially present new material such as amorphous etc. can be μrAccomplish more than 80000~100000.But actually it is difficult to look for
Well but also there is high magnetic permeability insulating materials to not only insulating properties, because the material for having magnetic conductivity is typically all metal or comprising metal
Composition.
ByUnderstand, and by increasing μrNumerical value can greatly improve wave resistance antiatherosclerotic effect, although we are
Reduction velocity of wave and improve ε simultaneouslyrNumerical value, but εrUsual very little, the dielectric constant of general solid is all units, and
Magnetic permeability μrCan be very big, it is possible thereby to ignore εrThe influence of increase.
The composite junction that the above-mentioned slow device of electromagnetic wave traveling wave passes through magnet+insulating sleeve+conductor+insulating sleeve+magnetic sleeve pipe
Structure, while the dielectric constant and relative permeability of the conductor surrounding medium of electromagnetic wave traveling wave are improved, the ripple of electromagnetic running wave can be made
The part that speed is reduced to the light velocity in the slow equipment of electromagnetic wave traveling wave of the present invention is gentle to 1/tens, and significantly
The waveform steepness of electromagnetic running wave.
As it was previously stated, in step s 2, continue to propagate along wire by the first electromagnetic wave traveling wave released over the ground, at this moment
When it is sent to the slow device of electromagnetic wave traveling wave, because the wave impedance of electromagnetic wave traveling wave increases suddenly, electromagnetic wave traveling wave can be
Traveling wave reflection effect occurs herein, makes the electromagnetic wave traveling wave of incidence prolong former propagation path backtracking, such electromagnetic wave traveling wave will
First can be returned to, and vent position, the electromagnetic wave traveling wave and incident electromagnetic wave traveling wave at this moment passing through reflection fold generation over the ground
Add, will so improve its voltage-to-ground in the first vent position over the ground so that first over the ground bleeder be more prone to turn on
To be released over the ground.Also, put down because the wave impedance of electromagnetic wave traveling wave increases its generation of waveform steepness to electromagnetic wave traveling wave
Slow is answered, that is, reduces the waveform steepness of electromagnetic wave traveling wave, this releases and filtered very big benefit again to rear class.In step
In rapid S3, the slow device of electromagnetic wave traveling wave can reduce the spread speed of electromagnetic wave traveling wave, make it have time enough waiting one
It after secondary bleeder is fully on, can just travel at secondary bleeder, it is suitable so can ideally to solve at different levels responses
The problem of sequence.Its effect can cancel third level bleeder completely, without influenceing protection effect.Those skilled in the art know,
In the present invention, the step S2 and S3 can be realized simultaneously, or be realized according to any order.
In step s 4, second is carried out to the electromagnetic wave traveling wave after reflecting and be smooth to release over the ground.In this hair
In bright, such as it can be released over the ground relative to the earth using arrester.For example, the arrester can be piezo-resistance, electric discharge
Ligament arrester, Zinc-Oxide Arrester, ceramic discharge tube, Transient Suppression Diode, semiconductor discharge tube etc. device or its
Various combinations.In the present invention, the pulse energy for the electromagnetic wave traveling wave for releasing secondary can be greatly reduced.
In step s 5, filtered to carrying out the first bypass by the second electromagnetic wave traveling wave released over the ground.For example,
In the preferred embodiments of the present invention, one or more filter capacitors in parallel can be used to carry out bypass filtering with respect to place of working.
In other preferred embodiments of the present invention, other bypass filter circuits or device can also be used to carry out bypass filtering.
In step s 6, common mode filtering is carried out to the electromagnetic wave traveling wave by the first bypass filtering.For example, in this hair
In bright preferred embodiment, common mode inductance can be used to carry out common mode filtering.In a preferred embodiment of the invention, it is described
Common mode inductance can include at least two co-mode coils and the high-frequency magnetic being arranged between the co-mode coil.
In the step s 7, the second bypass is carried out to the electromagnetic wave traveling wave by common mode filtering to filter.For example, at this
In the preferred embodiment of invention, one or more filter capacitors in parallel can be used to carry out bypass filtering with respect to place of working.
In other preferred embodiments of the present invention, other bypass filter circuits or device can also be used to carry out bypass filtering.So
In the present invention, counterpoises are separated into 2 parts according to function, the earth earth mat of full-time leakage current energy is filtered with full-time
Except the work earth mat of interference, two ground are made not interfere with each other.
In step s 8, differential mode filtering is carried out to the electromagnetic wave traveling wave by the second bypass filtering.For example, in this hair
In bright preferred embodiment, differential mode inductance can be used to carry out differential mode filtering.In a preferred embodiment of the invention, it is described
Differential mode inductance can include high frequency magnetic core and the coil being set on the high frequency magnetic core.
Implement the present invention electromagnetic impact means of defence, by increase the device of traveling wave wave resistance increase traveling wave impedance and then
Make traveling wave reflect, solve response problems at different levels, improve discharge voltage over the ground and then reduce the requirement to grounding resistance.
Further, by set the slow device of electromagnetic wave traveling wave can to increase electromagnetic wave traveling wave impedance, smooth waveform steepness and
Deceleration electromagnetic wave traveling wave, released over the ground so that just carrying out second after completion of being released on the first ground, and then more ideally
Solve response problems at different levels, its effect can reduce the 3rd and release over the ground step, without influenceing protection effect.Further
Ground, by setting place of working and the earth, avoid interfering between two kinds of electromagnetic protections.Further, due to ordinatedly
Barrier point and traveling wave reflection and delay so that the requirement to grounded screen more reduces, can connecing in bigger grounding resistance
Good protection effect is realized on the net in ground.Its reason is that the traveling wave traveling of invasion electromagnetic wave has two branch roads (1) to pass through grounding resistance
Into the earth.(2) equipment is entered by conducting wire.Now (2) article enter the branch road of equipment and add very big impedance, this
According to shunting principle, the current ratio on (1) article branch road will necessarily increase sample one, it might even be possible to properly increase grounding resistance
Value in the case of can still get most current energy.
Fig. 6 is the theory diagram of the first embodiment of the electromagnetic impact guard system of the present invention.It is as shown in fig. 6, of the invention
Electromagnetic impact guard system, including：First over the ground the slow device 200, second of bleeder 100, electromagnetic wave traveling wave release over the ground
Device 300 and EMC filters 400.Described first over the ground bleeder 100 be used to carry out first to the electromagnetic wave traveling wave of invasion
Release over the ground.The slow device 200 of electromagnetic wave traveling wave is used for being reflected simultaneously by the first electromagnetic wave traveling wave released over the ground
The smooth electromagnetic wave traveling wave.Described second over the ground bleeder 300 be used for the electromagnetic wave after reflecting and be smooth
Traveling wave carries out second and released over the ground.The EMC filters 400 are used for being carried out by the second electromagnetic wave traveling wave released over the ground
EMC is filtered.
As it was previously stated, described first bleeder 300 can be arrester to bleeder 100 and second over the ground over the ground, example
It such as can be piezo-resistance, electric discharge ligament arrester, Zinc-Oxide Arrester, ceramic discharge tube, Transient Suppression Diode, partly lead
Body discharge tube etc. device or its various combination.The ECM filters 400 can be with any filter circuit as known in the art
Or equipment.The slow device of electromagnetic wave traveling wave that the slow device 200 of electromagnetic wave traveling wave is referred to shown in Fig. 3-5 is set.
In the electromagnetic impact guard system of the present invention, the described first bleeder 100, slow device of electromagnetic wave traveling wave over the ground
200th, the second construction of bleeder 300 and EMC filters 400 over the ground, operation principle are referred to Fig. 1-5 electromagnetism punching
The each embodiment construction referred in means of defence is hit, is just not repeated herein.
Fig. 7 is the theory diagram of the second embodiment of the electromagnetic impact guard system of the present invention.It is as shown in fig. 7, of the invention
Electromagnetic impact guard system, including：First over the ground the slow device 200, second of bleeder 100, electromagnetic wave traveling wave release over the ground
Device 300 and EMC filters 400.Wherein, first the slow device 200, second of bleeder 100, electromagnetic wave traveling wave is over the ground over the ground
The connection the earth of bleeder 300.The EMC filters 400 connect place of working.In the present embodiment, the EMC filters
400 include the first bypass filtering unit 410, common mode filtering component 420, second bypasses filtering unit 430 and differential mode filtering group
Part 440.The first bypass filtering unit 410 and second, which bypasses filtering unit 430, can include one or more filters in parallel
Ripple electric capacity.The common mode filtering component 420 can be common mode inductance, and it can include at least two co-mode coils and be arranged on institute
State the high-frequency magnetic between co-mode coil.The differential mode filtering unit 440 can be differential mode inductance, and it can include high frequency magnetic core
With the coil being set on the high frequency magnetic core.
In the electromagnetic impact guard system of the present invention, the described first bleeder 100, slow device of electromagnetic wave traveling wave over the ground
200th, second over the ground bleeder 300, first bypass filtering unit 410, common mode filtering component 420, second bypass filtering unit
430 and the construction of differential mode filtering unit 440, operation principle be referred to refer in Fig. 1-5 electromagnetic impact means of defence
Each embodiment construction, be just not repeated herein.
Implement the present invention electromagnetic impact guard system, by increase the device of traveling wave wave resistance increase traveling wave impedance and then
Make traveling wave reflect, solve response problems at different levels, improve discharge voltage over the ground and then reduce the requirement to grounding resistance.
Further, by set the slow device of electromagnetic wave traveling wave can to increase electromagnetic wave traveling wave impedance, smooth waveform steepness and
Deceleration electromagnetic wave traveling wave, released over the ground so that just carrying out second after completion of being released on the first ground, and then more ideally
Solve response problems at different levels, its effect can reduce the 3rd and release over the ground step, without influenceing protection effect.Further
Ground, by setting place of working and the earth, avoid interfering between two kinds of electromagnetic protections.Further, due to ordinatedly
Barrier point and traveling wave reflection and delay so that the requirement to grounded screen more reduces, can connecing in bigger grounding resistance
Good protection effect is realized on the net in ground.Its reason is that the traveling wave traveling of invasion electromagnetic wave has two branch roads (1) to pass through grounding resistance
Into the earth.(2) equipment is entered by conducting wire.Now (2) article enter the branch road of equipment and add very big impedance, this
According to shunting principle, the current ratio on (1) article branch road will necessarily increase sample one, it might even be possible to properly increase grounding resistance
Value in the case of can still get most current energy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. electromagnetic impact means of defence, it is characterised in that including：S1, the electromagnetic wave traveling wave to invasion carry out first and released over the ground；S2, by the device that increase traveling wave wave resistance is sent to by the first electromagnetic wave traveling wave for releasing over the ground to reflect and smooth described Electromagnetic wave traveling wave；S3, the electromagnetic wave traveling wave progress second after reflecting and be smooth is released over the ground；S4, the electromagnetic wave traveling wave progress EMC filtering to being released over the ground by second.
- 2. electromagnetic impact means of defence according to claim 1, it is characterised in that the step S2 includes：S21, the slow device of electromagnetic wave traveling wave is used to transmit the electromagnetic wave traveling wave so that the electromagnetic wave traveling wave is reflected to enter again Row first discharges over the ground；S22, the slow device of the electromagnetic wave traveling wave is used to transmit the electromagnetic wave traveling wave so that the electromagnetic wave traveling wave to be carried out smoothly And deceleration.
- 3. electromagnetic impact means of defence according to claim 2, it is characterised in that the slow device of electromagnetic wave traveling wave includes Hollow conductive pipe, the magnet being arranged on inside the hollow conductive pipe, are arranged between the hollow conductive pipe and the magnet With the first insulating sleeve of the insulate magnet and the hollow conductive pipe, the magnetic sheath set around the hollow conductive pipe Pipe, and be arranged between the magnetic sleeve pipe and the hollow conductive pipe with the hollow conductive pipe and the magnetic sheath of insulating Second insulating sleeve of pipe.
- 4. electromagnetic impact means of defence according to claim 3, it is characterised in that the hollow conductive pipe is to be opened on outer wall If the cylindrical metal tube of continuous helical groove；The magnet is the central bar magnet for being located in the cylindrical metal tube, described The end walls center of cylindrical metal tube sets the first through hole passed through for the bar magnet；The end walls of the cylindrical metal tube It is upper to be placed equidistant multiple second through holes around the first through hole.
- 5. electromagnetic impact means of defence according to claim 4, it is characterised in that the slow device of electromagnetic wave traveling wave enters one Step includes the fixedly connected part for being arranged on the hollow conductive pipe both ends；The fixedly connected part includes being set in described hollow lead Fulgurite both ends are with annular insulation Jie's piece of the insulate hollow conductive pipe and the magnetic sleeve pipe, and are fixed on the magnetic sheath Conductive fixed cover on pipe；Multiple third through-holes are set on the outer wall of the conductive fixed cover.
- 6. electromagnetic impact means of defence according to claim 1, it is characterised in that the step S4 includes：S41, filtered to carrying out the first bypass by the second electromagnetic wave traveling wave released over the ground；S42, common mode filtering is carried out to the electromagnetic wave traveling wave by the first bypass filtering；S43, the second bypass filtering is carried out to the electromagnetic wave traveling wave by common mode filtering；S44, differential mode filtering is carried out to the electromagnetic wave traveling wave by the second bypass filtering.
- 7. electromagnetic impact means of defence according to claim 6, it is characterised in that the phase in the step S1 and step S3 The earth is released over the ground to the electromagnetic wave traveling wave, relative place of working is entered to the electromagnetic wave traveling wave in the step S4 Row bypass filtering.
- A kind of 8. electromagnetic impact guard system, it is characterised in that including：First bleeder over the ground, released over the ground for carrying out first to the electromagnetic wave traveling wave of invasion；The slow device of electromagnetic wave traveling wave, for reflect the simultaneously smooth electromagnetism by the first electromagnetic wave traveling wave released over the ground Ripple traveling wave；Second bleeder over the ground, released over the ground for carrying out second to the electromagnetic wave traveling wave after reflecting and be smooth；EMC filters, for carrying out EMC filtering by the second electromagnetic wave traveling wave released over the ground.
- 9. electromagnetic impact guard system according to claim 8, it is characterised in that the slow device of electromagnetic wave traveling wave includes Hollow conductive pipe, the magnet being arranged on inside the hollow conductive pipe, are arranged between the hollow conductive pipe and the magnet With the first insulating sleeve of the insulate magnet and the hollow conductive pipe, the magnetic sheath set around the hollow conductive pipe Pipe, and be arranged between the magnetic sleeve pipe and the hollow conductive pipe with the hollow conductive pipe and the magnetic sheath of insulating Second insulating sleeve of pipe.
- 10. electromagnetic impact guard system according to claim 9, it is characterised in that the hollow conductive pipe is on outer wall Open up the cylindrical metal tube of continuous helical groove；The magnet is the central bar magnet for being located in the cylindrical metal tube, institute The end walls center for stating cylindrical metal tube sets the first through hole passed through for the bar magnet；The both ends of the cylindrical metal tube On wall multiple second through holes are placed equidistant around the first through hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945947.3A CN107592784A (en) | 2017-10-12 | 2017-10-12 | A kind of electromagnetic impact means of defence and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945947.3A CN107592784A (en) | 2017-10-12 | 2017-10-12 | A kind of electromagnetic impact means of defence and system |
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| CN107592784A true CN107592784A (en) | 2018-01-16 |
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| CN201710945947.3A Pending CN107592784A (en) | 2017-10-12 | 2017-10-12 | A kind of electromagnetic impact means of defence and system |
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| CN103296873A (en) * | 2012-02-28 | 2013-09-11 | 研祥智能科技股份有限公司 | Power supply and filter of power supply |
| CN105099165A (en) * | 2014-05-19 | 2015-11-25 | 北京东土科技股份有限公司 | EMC protection and filtering device and method of high voltage power supply |
| CN204947590U (en) * | 2015-09-22 | 2016-01-06 | 成都新欣神风电子科技有限公司 | Integration lightning protection filter |
| CN205753380U (en) * | 2016-05-13 | 2016-11-30 | 广州金升阳科技有限公司 | The protection circuit of lightning surge |
| CN106210366A (en) * | 2016-07-19 | 2016-12-07 | 深圳市共进电子股份有限公司 | The guard system of FXO |
| CN207269288U (en) * | 2017-10-12 | 2018-04-24 | 深圳市创仕达电子有限公司 | A kind of electromagnetic impact guard system |
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2017
- 2017-10-12 CN CN201710945947.3A patent/CN107592784A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296873A (en) * | 2012-02-28 | 2013-09-11 | 研祥智能科技股份有限公司 | Power supply and filter of power supply |
| CN105099165A (en) * | 2014-05-19 | 2015-11-25 | 北京东土科技股份有限公司 | EMC protection and filtering device and method of high voltage power supply |
| CN204947590U (en) * | 2015-09-22 | 2016-01-06 | 成都新欣神风电子科技有限公司 | Integration lightning protection filter |
| CN205753380U (en) * | 2016-05-13 | 2016-11-30 | 广州金升阳科技有限公司 | The protection circuit of lightning surge |
| CN106210366A (en) * | 2016-07-19 | 2016-12-07 | 深圳市共进电子股份有限公司 | The guard system of FXO |
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