CN107064755A - A kind of method and system for determining soil flash-over characteristic - Google Patents
A kind of method and system for determining soil flash-over characteristic Download PDFInfo
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- CN107064755A CN107064755A CN201710207339.2A CN201710207339A CN107064755A CN 107064755 A CN107064755 A CN 107064755A CN 201710207339 A CN201710207339 A CN 201710207339A CN 107064755 A CN107064755 A CN 107064755A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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Abstract
The invention discloses a kind of method for determining soil flash-over characteristic, methods described includes：Soil is packed into container；Injecting electrode and film are embedded in the soil of the container in darkroom, and the lucifuge state inside shading treatment, holding container is carried out to the container；Surge generator is connected with the injecting electrode, return electrode, once simulation lightning current impact is carried out；The film buried in soil is taken out in darkroom, and carries out imaging processing, film imaging is obtained.The technical scheme that the present invention is provided, it is a kind of method that soil flash-over characteristic is observed by film photographic, under the load of specific edaphic condition, specific impulse current waveform and electric loop, utilize film photographic, pass through the image of imaging film, the observation of the wandering path of buried electric current and spark location can be directly observed, to determine the flash-over characteristic of soil.
Description
Technical field
The present invention relates to discharge examination field, more particularly, to a kind of method and system for determining soil flash-over characteristic.
Background technology
With continuing to develop for China's power system, and need for electricity is continued to increase, short-circuit fault of power system
Harmfulness constantly increases, and the security to earthing or grounding means brings higher requirement.China mountain range spreads all over, desert, hills and drought
Plateau area is more, and soil resistivity is higher, and the grounding resistance of earthing or grounding means is higher, considerably increases in the case of thunderbolt, because connecing
Power failure probability caused by ground.
Lightning protection is the harm in order to avoid thunder and lightning, and the thunder resisting equipment such as lightning rod, lightning conducter and arrester must all match somebody with somebody
With corresponding earthing or grounding means so as to lightning current importing the earth.Because power system transmission line is widely distributed, thunder is most subject to
Hit, and the lightning current of transmission line of electricity is to import the earth by the earthing or grounding means of shaft tower.Domestic and international operating experience shows, effectively drops
Low pole tower ground resistance is to improve the maximally efficient measure of transmission line of electricity direct lightning strike protecting effect.In the design of overhead line structures,
The impulse earthed resistance value of overhead line structures earthing or grounding means, directly influences the lightning protection effect of circuit.For the bar of general height
Tower, reduction Tower Impulse Grounding Resistance is to improve line lightning resisting level, reduce the effective measures of tripping rate with lightning strike.
In order to ensure the lightning protection effect of transmission line of electricity, reduction or the tower grounding device for improving high soil resistivity
Can, the design to earthing or grounding means needs to carry out new research.In recent years, State Grid Corporation of China inclines in terms of ground connection with dash current
Numerous studies are noted.Achievement in research shows, earth conductor through soil scatter the wandering passage of fault current, spark discharge region with
There is important relation between the impact impedance of earthing or grounding means, therefore, for discharge channel and the produced bloom of soil
The observation in domain has certain demand.However, being found according to the trial of related scientific research institutes, due to a large amount of uncertain factors, add
Large-scale lightning current impact generating means it is immature, the shooting of discharge channel and produced spark location to soil be difficult into
OK, it can simply shoot and obtain once in a while.
Accordingly, it would be desirable to a kind of technology, to solve the problems, such as the discharge channel to soil and the determination of produced spark location.
The content of the invention
The invention provides the method and system that a kind of utilization film photographic method observes soil flash-over characteristic, to solve to soil
The discharge channel of earth and the determination problem of produced spark location.
In order to solve the above problems, the invention provides the side that a kind of utilization film photographic method determines soil flash-over characteristic
Method, methods described includes：
Soil is packed into container；
Injecting electrode and film are embedded in the soil of the container in darkroom, and the container is carried out at shading
Lucifuge state inside reason, holding container；
Surge generator is connected with the injecting electrode, return electrode, once simulation lightning current impact is carried out；
The film buried in soil is taken out in darkroom, and carries out imaging processing, film imaging is obtained.
Preferably, the return electrode is the container conductive side wall, and the side wall sets terminals, the terminals with
The surge generator is connected.
Preferably, the return electrode is the conductive plate being embedded in the container, and the central shaft of the injecting electrode prolongs
Long line passes through return electrode.
Preferably, the thickness of the return electrode is to be not less than 5mm.
Preferably, corresponding plastic containers are respectively arranged to the developer solution and fixing solution that the film image processing
In, and keep 20 DEG C of temperature constant state.
Preferably, the soil is pushed down with insulating materials, injecting electrode and film be embedded in the container described
After in soil, the soil is pushed down with insulating materials.
Preferably, the electric current of the simulation lightning current impact is not less than 1kA.
Preferably, divider high-pressure side is connected to the injecting electrode that the injecting electrode is connected with the surge generator
Lead, is connected to the return electrode lead that the return electrode is connected with the surge generator by divider earth terminal, is used for
Voltage when the measurement simulation lightning current impact occurs.
Preferably, current coil is socketed on the return electrode lead that the return electrode is connected with the surge generator
And default electric insulation is kept with the return electrode lead, for measuring the electric current when simulation lightning current impact occurs.
Based on another aspect of the present invention, what a kind of utilization film photographic method of present invention offer determined soil flash-over characteristic is
System, the system includes：Container, surge generator, injecting electrode, return electrode, film；
Soil is filled with the container, injecting electrode and film are embedded in the soil of the container in darkroom,
And the lucifuge state inside shading treatment, holding container is carried out to the container；
The surge generator, for being connected with the injecting electrode, return electrode, carries out once simulation lightning current punching
Hit；
Film, for taking out the film buried in soil in darkroom, and carries out imaging processing, obtain film into
Picture.
Preferably, the system includes：The return electrode is the container conductive side wall, and the side wall sets wiring
End, the terminals are connected with the surge generator.
Preferably, the return electrode is the conductive plate being embedded in the container, and the central shaft of the injecting electrode prolongs
Long line passes through return electrode.
Preferably, the thickness of the return electrode is to be not less than 5mm.
Preferably, corresponding plastic containers are respectively arranged to the developer solution and fixing solution that the film image processing
In, and keep 20 DEG C of temperature constant state.
Preferably, further comprise：Insulating materials, for injecting electrode and film to be embedded in the soil of the container
Afterwards, the soil is pushed down.
Preferably, the electric current of the simulation lightning current impact is not less than 1kA.
Preferably, the system is additionally operable to：Divider high-pressure side is connected into the injecting electrode with the impact to occur
The injecting electrode lead of device connection, time that the return electrode is connected with the surge generator is connected to by divider earth terminal
Contact conductor is flowed, for measuring the voltage when simulation lightning current impact occurs.
Preferably, current coil is socketed on the return electrode lead that the return electrode is connected with the surge generator
And default electric insulation is kept with the return electrode lead, for measuring the electric current when simulation lightning current impact occurs.
The technical scheme that the present invention is provided, is a kind of method that soil flash-over characteristic is observed by film photographic, in spy
Determine under edaphic condition, specific impulse current waveform and electric loop load, using film photographic, by the image of imaging film,
The observation of the wandering path of buried electric current and spark location can be directly observed, to determine the flash-over characteristic of soil.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is the method stream that soil flash-over characteristic is determined according to a kind of utilization film photographic method of an embodiment of the present invention
Cheng Tu；
Fig. 2 is the cuboid container structure chart according to an embodiment of the present invention；
Fig. 3 is injecting electrode and the signal of return electrode burial place in the cuboid container according to an embodiment of the present invention
Figure；
Fig. 4 is the cylindrical container structure chart according to an embodiment of the present invention；
Fig. 5 is to be electrically connected schematic diagram according to the cuboid container of an embodiment of the present invention；
Fig. 6 is to be electrically connected schematic diagram according to the cylindrical container of an embodiment of the present invention；
Fig. 7 is the film imaging schematic diagram according to an embodiment of the present invention；
Fig. 8 is the input current waveform figure according to an embodiment of the present invention；
Fig. 9 is the system knot that soil flash-over characteristic is determined according to a kind of utilization film photographic method of an embodiment of the present invention
Composition.
Embodiment
The illustrative embodiments of the present invention are introduced with reference now to accompanying drawing, however, the present invention can use many different shapes
Formula is implemented, and it is to disclose at large and fully there is provided these embodiments to be not limited to embodiment described herein
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.For showing for being illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, is appreciated that and it
The linguistic context of association area has consistent implication, and is not construed as Utopian or excessively formal meaning.
Fig. 1 is the method stream that soil flash-over characteristic is determined according to a kind of utilization film photographic method of an embodiment of the present invention
Cheng Tu.Embodiments of the present invention, the container for holding soil is put into darkroom, in darkroom, and film and injecting electrode are buried
It is located in soil, after film and injecting electrode are embedded well, hides the entirety of container or light leak face with thick puggaree in darkroom
Lid, thick puggaree can be 4 layers or more, so as to be in the state of lucifuge inside container.Soil surface can press constant weight
Soil is quick-fried collapses when insulating materials prevents thunder-strike current impact generation.Injecting electrode and return electrode are connected with surge generator
Connect, opening impact generator, 1 Secondary Shocks experiment is carried out with simulation thunder-strike current.In the environment in darkroom, film is dug out, is carried out
Imaging.Embodiments of the present invention, can carry out the wandering path of buried electric current and fire by directly shooting the method for imaging
The observation in flower region, with certain accuracy, can determine the flash-over characteristic of soil, for assessing earthing or grounding means by thunder
Soil characteristics of the dispersed flow during surge.As shown in figure 1, a kind of utilization film photographic method determines the method 100 of soil flash-over characteristic
Since step 101.
Preferably, in step 101：Soil is packed into container.Take prepared soil 2.33d m3, as test product,
Respectively according to standard GB/T/T21698-2008《Bonded earth electrode technical conditions》Or DL/T380-2010 6.3.2 6.7.2
The method of bar, carries out soil resistivity test.Soil is packed into container.In embodiment of the present invention, container is included but not
It is limited to cuboid (Fig. 1 is not shown, as shown in Figure 2), square or cylinder (Fig. 1 is not shown, as shown in Figure 4).As shown in Figure 2
Cuboid container, wherein 201 be the length of cuboid container, 202 be the width of cuboid container, and 203 be the height of cuboid container, long
The material of cube container can be the non-conductive material that thickness is 10mm, such as pmma material.Cuboid surrounding and top
Fixed with bottom with glue, in embodiment of the present invention, upper end can be plexiglass cover.For example, the length 201 of cuboid can
Think 200cm, wide the 202 of cuboid can be 40cm, and the height of cuboid can be 50cm.In embodiments of the present invention, hold
The side wall of device can be return electrode, cylindrical container as shown in Figure 4,401 be cylindrical container top, 404 be cylinder
The bottom of container, the top and bottom of cylindrical container are insulating materials, such as can be the epoxy plate of 10mm thickness, 403-1,
403-2,403-3,403-4 are the terminals of uniform four rivets in the middle of cylinder barrel, and cylinder barrel is conductive material,
Such as the stainless steel material that thickness is 5mm, cylinder barrel can be used as return electrode, 403-1,403- when thunderbolt impact occurs
2nd, four connection ends of 403-3,403-4 cylinder barrel can connect backflow contact conductor, be connected by return electrode lead
In surge generator, cylinder barrel is fixed with top and bottom cover with glue.For example, the diameter of cylindrical container can be
800mm, barrel height can be 800mm.In embodiment of the present invention, the soil of experiment can be contained in multiple diameter 30cm,
Standby in height 40cm to 50cm clean cylinder, soil particle requires tiny clean.Cuboid container as shown in Figure 2, can be with
It is filled with 0.32m3Soil, or be filled with 0.25m for the cylindrical container shown in Fig. 43Soil.
Preferably, in step 102：Injecting electrode and film are embedded in the soil of container in darkroom, and to container
Carry out the lucifuge state inside shading treatment, holding container.The container that step 101 is filled with into soil is placed in darkroom, buries note
Enter electrode and film.
, can be from the cuboid container shown in Fig. 3 in embodiments of the present invention, return electrode is to be embedded in container
Conductive plate, the central shaft extended line of injecting electrode passes through return electrode.An a diameter of 10mm is selected, length is led for 1.2m's
Torch is used as injecting electrode, such as metallic copper contact rod.Return electrode selects the conductive plate that one piece of length and width is 300mm or so, such as
Copper coin.Such as from copper coin as return electrode plate, the thickness of copper coin is not less than 5mm, is punctured to prevent backflow battery lead plate by electric current
And operate electrode.Embedded injecting electrode and the mode of return electrode are as shown in figure 3, in embodiments of the present invention, positional distance
It need not be strict with.As shown in figure 3, injecting electrode is parallel to above and below (cuboid length direction), perpendicular to left and right face
(cuboid width), and central axis extended line is approximately through return electrode center, can also deviate return electrode center.
Injecting electrode need to have certain distance apart from return electrode, can be adjusted according to actual photographed situation.The burial place of film is such as
The burial place of film 504 shown in Fig. 5.
In embodiments of the present invention, cylindrical container as shown in Figure 4 can be selected, return electrode is container conductive side
Wall, side wall sets terminals, and terminals are connected with surge generator.Cylinder barrel and top 401 and the center of bottom cover 404
Position can respectively open up the hole directly for 12mm, and it is directly 10mm that the center of cylinder, which can bury one, and length is
1.2m contact rod is used as injecting electrode, such as metallic copper contact rod.The embedded contact rod in its center position can be with barrel
Parallel, the barrel 402 of cylinder is used as return electrode.In embodiments of the present invention, by cylinder metal return electrode
Middle arrangement rod injecting electrode, realizes under simulation lightning current impact condition, observes, analyzes table at buried rod injecting electrode
The uniform purpose to surrounding dispersed current of grounding grids in face.The position of the burial place of film film 603 as shown in Figure 6.
In embodiment of the present invention, the selection of container shapes is not limited to the embodiment that the present invention illustrates, injecting electrode
Shape, the shape of material and return electrode, material are also not necessarily limited to the embodiment that the present invention illustrates.
Preferably, in step 103：Surge generator is connected with injecting electrode, return electrode, thunder is once simulated
Rush of current.
In embodiments of the present invention, as from the connected mode shown in Fig. 5, surge generator 501 passes through injecting electrode
Lead 502 is connected with injecting electrode 505, and return electrode 506 is connected by return electrode lead 503 with surge generator 501
Connect.Divider is connected to injecting electrode lead 502 and return electrode lead 503, when being impacted for measuring simulation lightning current
Voltage.Current coil 507 is used to measure the electric current occurred during simulation lightning current impact.Embodiments of the present invention are used to utilize
Film photographic determines the feasible method of the flash-over characteristic of soil buried conductor end discharge channel and spark location.
In embodiments of the present invention, as from the connected mode shown in Fig. 5, surge generator 601 passes through injecting electrode
Lead 602 is connected with injecting electrode 606, and return electrode 607 is connected by return electrode lead 604 with surge generator 501
Connect.Divider is connected to injecting electrode lead 602 and return electrode lead 604, when being impacted for measuring simulation lightning current
Voltage.Current coil 605 is used to measure the electric current occurred during simulation lightning current impact.Embodiments of the present invention utilize film
Shoot and determine to be used to observe buried conductor to the discharge channel of surrounding diffusing and the film photographic observation soil electric discharge of spark location
The feasible method of characteristic.
In embodiments of the present invention, after injecting electrode, return electrode surge generator are attached, insulating materials is used
Soil is pushed down, soil is quick-fried during preventing that lightning current impact from occurring collapses.
Preferably, after simulation lightning current impact occurs, surge generator high pressure is carried out to remove electric after excision ground connection
Connecting line, by soil and the container equipped with injecting electrode and return electrode is placed in darkroom.
In embodiments of the present invention, from or make Work tool and parameter and may be referred to as follows, but implementation of the invention
Mode selects Work tool and parameter not limited to this.
1, impulse current generator
Parameter：Nominal voltage is ± 1200kV；Rated energy is 360kJ；Output current wave is that 8 μ s/20 μ s simulate thunder
Electric wave.Output simulation lightning current requirement is in more than 1KA.
2, divider
Parameter：Nominal voltage is ± 800kV；Underdamping divider；Intrinsic standoff ratio is 3320/1.Divider high-pressure side is connected
The injecting electrode lead being connected in injecting electrode with surge generator, is connected to return electrode by divider earth terminal and is sent out with impact
The return electrode lead of raw device connection, for measuring voltage when simulation lightning current impact occurs.
3, current coil
Parameter：Pearson 1330, can measure maximum current peak 100kA, Hz-KHz is in 0.9Hz~1.5MHz.By electricity
Streamline circle is connected to the return electrode lead that return electrode is connected with surge generator, for measuring simulation lightning current impact
Electric current during generation.
Preferably, in step 104：The film buried in soil is taken out in darkroom, and carries out imaging processing, film is obtained
Imaging.Two length and widths are got out first, are not less than 0.5m*0.4m*0.3m plastic containers deeply, are developed respectively as film rinsing
Liquid vessel and film rinsing fixing solution vessel, developer solution, the depth deposited in a reservoir of fixing solution are not less than 10cm.Match somebody with somebody respectively
Make film rinsing drug solns (developer solution, fixing solution) solution.Two heating rods are got out, temperature is adjusted to 20 DEG C, put respectively
Enter in film rinsing drug solns (developer solution, fixing solution), two heating rods, which be powered, keeps temperature constant state.
Film is taken out from soil in darkroom, constant temperature is positioned over 30 seconds to 60 seconds in 20 DEG C of developer solution.Then
Film is pulled out from developer solution in darkroom, constant temperature is positioned over immediately about 200 seconds to 300 seconds in 20 DEG C of fixing solution.Most
Afterwards in darkroom, film is pulled out from fixing solution, turned on light, dried in the shade after film is rinsed well with clear water.Film imaging
As shown in Figure 7.
In embodiments of the present invention, from or make Work tool it is as follows：
Develop medicament, fixing medicament：The film for medical X-ray radiography produced from Tianjin Nankai area into the medical auxiliary material factory of letter
Pulvis covers medicine, including development medicament, fixing medicament, and preparing after several minutes at room temperature, or to be made with heating rod to be prepared
Liquid medicine constant temperature is used under the conditions of 19 DEG C to 21 DEG C, is first developed and is fixed afterwards, and developing time is generally 30 seconds to 60 seconds or so, is fixed
Time is generally 200 seconds to 300 seconds or so.The Fuji doctor that film is produced from Nanning City Guangxi superstar Medical Devices Co., Ltd.
With the blue X-ray film of sense.
Impact test is carried out as shown in Figure 6, and film 608 holds apart from cylindrical container lower end base 275mm apart from cylinder
Device upper end soil and air interface 50mm.The data of test measurement are respectively：Soil resistivity is 1523 Ω .m, surge voltage peak
Value 38kV, dash current peak value 15.27kA, film imaging figure is as shown in fig. 7, input current waveform is as shown in Figure 8.
Embodiment of the present invention discloses a kind of feasible side that soil flash-over characteristic is directly observed with the method for film photographic
Method, including：Arranged, realized in simulation thunder by using horizontal rod electrode and offside plate shape electrode using Fig. 5 embodiments
In the case of rush of current, observe, analyze the purpose of the buried outside dispersed current of grounding grids of rod electrode tip.Soil buried conductor is determined
The possible ways of the flash-over characteristic of end discharge channel and spark location.And using Fig. 6 embodiments by cylinder
Rod electrode is arranged in body metal electrode, is realized under simulation lightning current impact condition, is observed, analyzes buried rod electrode appearance
The uniform purpose to surrounding dispersed current of grounding grids in face, it is determined that for observing discharge channel and bloom of the buried conductor to surrounding diffusing
The film photographic in domain observes the feasible method of soil flash-over characteristic.Embodiment of the present invention is buried by the method directly shot
The wandering path of earth-current and the confirmation of spark location, with certain accuracy.Embodiments of the present invention are tested through test of many times
Current channel produced by card is not that electric current causes along the flashover of film face, but the wandering electric discharge of actual current causes
, thus the invention to analysis heavy current impact in the case of buried conductor produce spark location size have certain effect.
Fig. 9 is the system knot that soil flash-over characteristic is determined according to a kind of utilization film photographic method of an embodiment of the present invention
Composition.As shown in figure 9, a kind of utilization film photographic method determines the system 900 of soil flash-over characteristic, including：Container 901, impact
Generator 902, injecting electrode 903, return electrode 904, film 905.
Soil is filled with container 901, injecting electrode 903 and film 905 are embedded in the soil of container 901 in darkroom
In, and the lucifuge state inside shading treatment, holding container 901 is carried out to container 901；
Surge generator 902, for being connected with injecting electrode 903, return electrode 904, is once simulated lightning current
Impact；
Film 904, for taking out the film 904 buried in soil in darkroom, and carries out imaging processing, obtain film into
Picture.
Preferably, in system 900, return electrode 904 be the conductive side wall of container 901, side wall set terminals, terminals with
Surge generator 902 is connected.
Preferably, in system 900, return electrode 904 is to be embedded in conductive plate in container 901, injecting electrode 903
Heart axle extended line passes through return electrode 904.
Preferably, in system 900, the thickness of return electrode 904 is to be not less than 5mm.
Preferably, in system 900, container is respectively arranged to the developer solution and fixing solution that film 905 image processing
In, and keep 20 DEG C of temperature constant state.
Preferably, in system 900, soil is pushed down with insulating materials, soil is quick-fried during preventing that lightning current impact from occurring collapses.
Preferably, in system 900, the electric current of simulation lightning current impact is not less than 1KA.
Preferably, in system 900, divider is connected to injecting electrode 903 and the injecting electrode of surge generator 902
The return electrode lead of lead and return electrode 904 and surge generator 902, for measuring when simulation lightning current impact occurs
Voltage.
Preferably, in system 900, current coil is socketed on to the return electrode of return electrode 904 and surge generator 902
Lead, for measuring electric current when simulation lightning current impact occurs.
A kind of utilization film photographic method determines the system 900 of soil flash-over characteristic and one kind of another embodiment of the invention
Determine that the method 100 of soil flash-over characteristic is corresponding using film photographic method, no longer repeated herein.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall the present invention's
In the range of.
Normally, all terms used in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly defined in addition wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example in described device, component etc. is construed to, unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate order, unless explicitly stated otherwise.
Claims (18)
1. a kind of method for determining soil flash-over characteristic, it is characterised in that methods described includes：
Soil is packed into container；
Injecting electrode and film are embedded in the soil of the container in darkroom, and shading treatment is carried out to the container,
Lucifuge state inside holding container；
Surge generator is connected with the injecting electrode, return electrode, simulation lightning current impact is carried out；
The film buried in soil is taken out in darkroom, and carries out imaging processing, film imaging is obtained.
2. according to the method described in claim 1, it is characterised in that the return electrode is the container conductive side wall, described
Side wall sets terminals, and the terminals are connected with the surge generator.
3. according to the method described in claim 1, it is characterised in that the return electrode is the conduction being embedded in the container
Plate, the central shaft extended line of the injecting electrode passes through return electrode.
4. method according to claim 1 or 2, it is characterised in that the thickness of the return electrode is to be not less than 5mm.
5. according to the method described in claim 1, it is characterised in that to the film image the developer solution of processing and be fixed
Liquid is respectively arranged in corresponding plastic containers, and keeps 20 DEG C of temperature constant state.
6. according to the method described in claim 1, it is characterised in that further comprise：Injecting electrode and film are buried described
After in the soil of the container, the soil is pushed down with insulating materials.
7. according to the method described in claim 1, it is characterised in that the electric current of the simulation lightning current impact is not less than 1kA.
8. according to the method described in claim 1, it is characterised in that divider high-pressure side is connected to the injecting electrode and institute
The injecting electrode lead of surge generator connection is stated, divider earth terminal is connected into the return electrode occurs with the impact
The return electrode lead of device connection, for measuring the voltage when simulation lightning current impact occurs.
9. method according to claim 8, it is characterised in that current coil is socketed on the return electrode and the punching
Hit the return electrode lead of generator connection and keep default electric insulation with the return electrode lead, for measuring the mould
Intend electric current when lightning current impact occurs.
10. a kind of system for determining soil flash-over characteristic, it is characterised in that the system includes：Container, surge generator, note
Enter electrode, return electrode and film；
Soil is filled with the container, injecting electrode and film are embedded in the soil of the container in darkroom, and it is right
The container carries out the lucifuge state inside shading treatment, holding container；
The surge generator, for being connected with the injecting electrode, return electrode, carries out simulation lightning current impact；
Film, for taking out the film buried in soil in darkroom, and carries out imaging processing, obtains film imaging.
11. system according to claim 10, it is characterised in that the return electrode is the container conductive side wall, institute
State side wall and terminals are set, the terminals are connected with the surge generator.
12. system according to claim 10, it is characterised in that the return electrode is to be embedded in leading in the container
Electroplax, the central shaft extended line of the injecting electrode passes through return electrode.
13. the system according to claim 11 or 12, it is characterised in that the thickness of the return electrode is to be not less than 5mm.
14. system according to claim 10, it is characterised in that to the film image the developer solution of processing and determine
Shadow liquid is respectively arranged in corresponding plastic containers, and keeps 20 DEG C of temperature constant state.
15. system according to claim 10, it is characterised in that further comprise：Insulating materials, for by injecting electrode
After being embedded in film in the soil of the container, the soil is pushed down.
16. system according to claim 10, it is characterised in that the electric current of the simulation lightning current impact is not less than 1kA.
17. system according to claim 10, it is characterised in that also include：Divider, for measuring the simulation thunder and lightning
Voltage when stream impact occurs；The high-pressure side of the divider is connected to what the injecting electrode was connected with the surge generator
Injecting electrode lead, the earth terminal of the divider is connected to the backflow electricity that the return electrode is connected with the surge generator
Pole lead.
18. system according to claim 10, it is characterised in that by current coil be socketed on the return electrode with it is described
The return electrode lead of surge generator connection simultaneously keeps default electric insulation with the return electrode lead, described for measuring
Simulate electric current when lightning current impact occurs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710207339.2A CN107064755A (en) | 2017-03-31 | 2017-03-31 | A kind of method and system for determining soil flash-over characteristic |
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| CN201710207339.2A CN107064755A (en) | 2017-03-31 | 2017-03-31 | A kind of method and system for determining soil flash-over characteristic |
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| CN107064755A true CN107064755A (en) | 2017-08-18 |
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| CN201710207339.2A Pending CN107064755A (en) | 2017-03-31 | 2017-03-31 | A kind of method and system for determining soil flash-over characteristic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415340A (en) * | 2020-10-27 | 2021-02-26 | 清华大学 | Device and method for observing three-dimensional discharge morphology of soil around grounding body |
| CN113311297A (en) * | 2021-05-19 | 2021-08-27 | 中国电力科学研究院有限公司 | Method for observing three-dimensional discharge morphology of soil around grounding device |
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| CN203773008U (en) * | 2013-07-30 | 2014-08-13 | 中国电力科学研究院 | Impact characteristic simulation test device for grounding body with large simulated size and large amplitude value |
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Patent Citations (1)
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| CN203773008U (en) * | 2013-07-30 | 2014-08-13 | 中国电力科学研究院 | Impact characteristic simulation test device for grounding body with large simulated size and large amplitude value |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415340A (en) * | 2020-10-27 | 2021-02-26 | 清华大学 | Device and method for observing three-dimensional discharge morphology of soil around grounding body |
| CN112415340B (en) * | 2020-10-27 | 2021-12-21 | 清华大学 | Device and method for observing three-dimensional discharge morphology of soil around ground rod |
| CN113311297A (en) * | 2021-05-19 | 2021-08-27 | 中国电力科学研究院有限公司 | Method for observing three-dimensional discharge morphology of soil around grounding device |
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