CN107643478A - One kind draws Reatta scale model lightning test system - Google Patents
One kind draws Reatta scale model lightning test system Download PDFInfo
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- CN107643478A CN107643478A CN201711106641.5A CN201711106641A CN107643478A CN 107643478 A CN107643478 A CN 107643478A CN 201711106641 A CN201711106641 A CN 201711106641A CN 107643478 A CN107643478 A CN 107643478A
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Abstract
The embodiment of the invention discloses one kind to draw Reatta scale model lightning test system.Draw Reatta scale model and second there is provided first in the present invention and draw Reatta scale model, draw Reatta scale model as experimental group using first, draw Reatta scale model as control group using second, contrast experiment is carried out by control variate method, with high-field electrode and impulse voltage generator simulation thunder-strike current, draw Reatta scale model and second to first and draw the progress flash-over characteristic experimental study of Reatta scale model, solve the current technical problem for lacking research technique and simulated test being carried out to drawing Reatta.
Description
Technical field
The present invention relates to power test field, more particularly to one kind to draw Reatta scale model lightning test system.
Background technology
With the raising of the voltage class of China's transmission line of electricity, the increase of transmission capacity, the height of shaft tower is promoted constantly to increase
Add, thunderbolt line tripping accident also increases as.
It is a kind of effective lightning protection measures to draw Reatta, and the design of its tower body is typically higher than common steel tower, and lightning protection region is more
Greatly, the principle of " drawing thunder and the thunder that disappears " is mainly utilized, is that identical is theoretical with controllable discharge lightning rod,
On the one hand, before the formation of strong thunder and lightning, electric discharge arteries and veins is discharged upwards using the controllable discharge lightning rod for drawing Reatta top
Punching, the natural principle formed according to thunder and lightning, change the distribution of thunder and lightning electric charge, actively guide a part of thundercloud electric current by drawing Reatta
Into the earth, the transmission line of electricity of surrounding is played a protective role, to reduce transmission line caused by lightning strike number nearby；On the one hand two, draw
Reatta plays shield effectiveness to the circuit and equipment of surrounding, has wider guarantor similar to the principle of lightning conductor protection in transformer station
Protect scope.
But currently lacking the device that simulated test is carried out for drawing Reatta, current simulated test of being struck by lightning is mainly for transmission of electricity
Circuit, it is difficult to the various carry out flash-over characteristic experimental studies for drawing Reatta.
Therefore, it result in the current technical problem for lacking research technique and simulated test being carried out to drawing Reatta.
The content of the invention
The invention provides one kind to draw Reatta scale model lightning test system, solves and currently lacks research technique to drawing
Reatta carries out the technical problem of simulated test.
The invention provides one kind to draw Reatta scale model lightning test system, including：Impulse voltage generator, high-tension electricity
Pole, first draw Reatta scale model, second draw Reatta scale model；
Described first draw the tower top of Reatta scale model and described second draw Reatta scale model tower top to ground level
Unanimously；
The discharge end of the high-field electrode draws higher than described first the tower top of Reatta scale model and described to ground level
Second draw the tower top of Reatta scale model the high-tension electricity is higher than to ground level to ground level, the power connection end of the high-field electrode
The discharge end of pole to ground level, the spacing of the discharge end of the high-field electrode and the described first tower top for drawing Reatta scale model
It is consistent with the spacing of second tower top for drawing Reatta scale model with the discharge end of the high-field electrode；
The output end of the impulse voltage generator electrically connects with the power connection end of the high-field electrode.
Preferably, in addition to：First electric capacity C1, the second electric capacity C2 and oscillograph；
The output end of the impulse voltage generator electrically connects with the first end of the first electric capacity C1；
The second end of the first electric capacity C1 respectively with the first end of the second electric capacity C2 and the input of the oscillograph
End electrical connection；
The second end ground connection of the second electric capacity C2.
Preferably, the high-field electrode is cylindrical metal rod, and the discharge end of the high-field electrode is provided with metal ball.
Preferably, the impulse voltage generator specifically includes：Impulse resistance R1, the 3rd electric capacity C3, the first spheric electrode
With the second spheric electrode；
The 3rd electric capacity C3 first ends electrically connect with the first end of the impulse resistance R1, and the of the 3rd electric capacity C3
Two ends are grounded；
The second end of the impulse resistance R1 electrically connects with first spheric electrode；
Second spheric electrode electrically connects with the power connection end of the high-field electrode, first spheric electrode and described
The non-contact setting of two spheric electrodes.
Preferably, the impulse voltage generator also includes：Protective resistance R2；
Second spheric electrode electrically connects with the first end of the protective resistance R2, the second end of the protective resistance R2
Electrically connected with the power connection end of the high-field electrode.
Preferably, in addition to：Video camera；
Set the distance of the position of the video camera and the discharge end of the high-field electrode be more than or equal to preset safety away from
From.
Preferably, described first draws the tower top of Reatta scale model and described second and draws between the tower top of Reatta scale model
Spacing be 6m.
Preferably, the spacing of the discharge end of the high-field electrode and the described first tower top for drawing Reatta scale model and described
The spacing of the discharge end of high-field electrode and second tower top for drawing Reatta scale model is all 4m.
Preferably, the length of the cylindrical metal rod is 15m, and the diameter of section of the cylindrical metal rod is 60mm,
A diameter of 80mm of the metal ball.
Preferably, described first draw Reatta scale model and described second draw Reatta scale model tower top to ground level
It is all 4.5m.
As can be seen from the above technical solutions, the present invention has advantages below：
The invention provides one kind to draw Reatta scale model lightning test system, including：Impulse voltage generator, high-tension electricity
Pole, first draw Reatta scale model, second draw Reatta scale model；Described first, which draws Reatta scale model and described second, draws thunder
The tower top of tower scale model it is highly consistent over the ground；The discharge end of the high-field electrode draws thunder to ground level higher than described first
The tower top of tower scale model and described second draw Reatta scale model tower top to ground level, the power connection end of the high-field electrode
Thunder is drawn to ground level, the discharge end of the high-field electrode and described first higher than the discharge end of the high-field electrode to ground level
The discharge end of the spacing of the tower top of tower scale model and the high-field electrode and the described second tower top for drawing Reatta scale model
Spacing is consistent；The output end of the impulse voltage generator electrically connects with the power connection end of the high-field electrode.
Draw Reatta scale model and second there is provided first in the present invention and draw Reatta scale model, draw Reatta contracting ratio with first
Model is experimental group, draws Reatta scale model as control group using second, contrast experiment is carried out by control variate method, with high-tension electricity
Pole and impulse voltage generator simulation thunder-strike current, Reatta scale model and second is drawn to first and draws Reatta scale model and puts
Electrical characteristics experimental study, solves the current technical problem for lacking research technique and simulated test being carried out to drawing Reatta.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of annexation signal for drawing Reatta scale model lightning test system provided in an embodiment of the present invention
Figure；
Fig. 2 is a kind of equivalent circuit diagram for drawing Reatta scale model lightning test system provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of high-field electrode provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation for drawing Reatta provided in an embodiment of the present invention；
Fig. 5 is oscillograph measurement voltage oscillogram provided in an embodiment of the present invention；
Wherein, reference is as follows：
1st, high-field electrode；2nd, first draws Reatta scale model；3rd, second draws Reatta scale model；4th, surge voltage occurs
Device；5th, oscillograph；6th, rest ledge；7th, workbench；8th, earth conductor；C1, the first electric capacity；C2, the second electric capacity；C3, the 3rd electric capacity；
R1, impulse resistance；R2, protective resistance.
Embodiment
The embodiments of the invention provide one kind to draw Reatta scale model lightning test system, solves and currently lacks test arm
Section carries out the technical problem of simulated test to drawing Reatta.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Referring to Fig. 1, the embodiments of the invention provide a kind of implementation for drawing Reatta scale model lightning test system
Example, including：Impulse voltage generator 4, high-field electrode 1, first draw Reatta scale model 2, second draw Reatta scale model 3；
First draw the tower top of Reatta scale model 2 and second draw Reatta scale model 3 tower top it is highly consistent over the ground；
The discharge end of high-field electrode 1 draws the tower top of Reatta scale model 2 and second higher than first to ground level and draws Reatta
The tower top of scale model 3 to ground level, the power connection end of high-field electrode 1 is to pair of the ground level higher than the discharge end of high-field electrode 1
Ground level, the discharge end of high-field electrode 1 and the first spacing of tower top and the discharge end of high-field electrode 1 for drawing Reatta scale model 2
It is consistent with the spacing for the tower top that second draws Reatta scale model 3；
The output end of impulse voltage generator 4 electrically connects with the power connection end of high-field electrode 1.
Refer to that Reatta will be drawn according to contracting than establishing after ratio scaled down it should be noted that drawing Reatta scale model
Model；
Draw Reatta scale model 2 and second there is provided first in the present embodiment and draw Reatta scale model 3, draw Reatta with first
Scale model 2 is experimental group, draws Reatta scale model 3 with second for control group；
Contrast experiment is carried out by control variate method, thunder-strike current is simulated with high-field electrode 1 and impulse voltage generator 4,
Draw Reatta scale model 2 and second to first and draw the progress flash-over characteristic experimental study of Reatta scale model 3, solve and currently lack
Research technique carries out the technical problem of simulated test to drawing Reatta.
It is a kind of one embodiment for drawing Reatta scale model lightning test system provided in an embodiment of the present invention above, with
It is a kind of another embodiment for drawing Reatta scale model lightning test system provided in an embodiment of the present invention down.
Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are referred to, the embodiments of the invention provide one kind to draw the thunderbolt examination of Reatta scale model
Another embodiment of check system, including：
Impulse voltage generator 4, high-field electrode 1, first draw Reatta scale model 2, second draw Reatta scale model 3；
First draw the tower top of Reatta scale model 2 and second draw Reatta scale model 3 tower top it is highly consistent over the ground；
The discharge end of high-field electrode 1 draws the tower top of Reatta scale model 2 and second higher than first to ground level and draws Reatta
The tower top of scale model 3 to ground level, the power connection end of high-field electrode 1 is to pair of the ground level higher than the discharge end of high-field electrode 1
Ground level, the discharge end of high-field electrode 1 and the first spacing of tower top and the discharge end of high-field electrode 1 for drawing Reatta scale model 2
It is consistent with the spacing for the tower top that second draws Reatta scale model 3；
The output end of impulse voltage generator 4 electrically connects with the power connection end of high-field electrode 1.
Refer to that Reatta will be drawn according to contracting than establishing after ratio scaled down it should be noted that drawing Reatta scale model
Model, draw Reatta scale model and actually draw Reatta structure always, possess structure such as：Tower body, workbench 7 (i.e. tower top), rest
Platform 6 and earth conductor 8；
First, which draws Reatta scale model 2 and second, draws Reatta scale model 3 two kinds of different operating modes can be set to carry out pair
Than testing, such as：Whether there is controllable discharge lightning rod, different Contact patch (10 ohm and 100 ohm) or different materials (steel and multiple
Condensation material) draw Reatta；
First, which draws the tower top of Reatta scale model 2 and the second the highly consistent over the ground of tower top for drawing Reatta scale model 3, is
Refer to first draw Reatta scale model 2 with second draw Reatta scale model 3 for appearance height it is consistent draw Reatta scale model；
The discharge end of high-field electrode 1 draws the tower top of Reatta scale model 2 and second higher than first to ground level and draws Reatta
The suspension of high-field electrode 1 that specifically referred to ground level of the tower top of scale model 3 is arranged on first and draws Reatta scale model 2 and second
Draw the top of Reatta scale model 3；
The power connection end of high-field electrode 1 specifically refers to high pressure higher than the discharge end of high-field electrode 1 to ground level to ground level
Electrode 1 suspension set when for discharge end under, power connection end is upper；
The discharge end of high-field electrode 1 and the first spacing of tower top and the discharge end of high-field electrode 1 for drawing Reatta scale model 2
It is consistent with the spacing for the tower top that second draws Reatta scale model 3 to specifically refer to first and draw Reatta scale model 2 and second to draw Reatta
Scale model 3 can be symmetricly set on the both sides of high-field electrode 1, can also be arranged on preset half with high-field electrode 1 for the center of circle
On the circumference in footpath；
Impulse voltage generator 4 uses 7500kV/750kJ impulse voltage generators, can produce the electricity for meeting experiment demand
Corrugating and voltage magnitude.
Further, in addition to：First electric capacity C1, the second electric capacity C2 and oscillograph 5；
The output end of impulse voltage generator 4 electrically connects with the first electric capacity C1 first end；
First electric capacity C1 the second end electrically connects with the second electric capacity C2 first end and the input of oscillograph 5 respectively；
Second electric capacity C2 the second end ground connection.
It should be noted that the first electric capacity C1 and the second electric capacity C2 forms divider, avoid accessing the voltage mistake of oscillograph 5
Greatly；
The waveform of surge voltage caused by impulse voltage generator 4 can be observed by oscillograph 5, and observation can be passed through
Waveform adjustment impulse voltage generator 4 produces suitable surge voltage, and the voltage oscillogram that oscillograph 5 is observed is as shown in Figure 5.
Further, high-field electrode 1 is cylindrical metal rod, and the discharge end of high-field electrode 1 is provided with metal ball.
It should be noted that the result of current thunder observation both at home and abroad show descending negative ground dodge during free guide account for it is whole
The 90% of individual gap length, and free guide's head diameter is typically bigger, so using cylindrical metal rod as high-field electrode 1,
And the discharge end of high-field electrode 1 is provided with metal ball, simulate descending negative ground and flash journey；
The cylindrical metal rod of high-field electrode 1 can be cylindrical iron staff, and metal ball can be copper ball.
Further, impulse voltage generator 4 specifically includes：Impulse resistance R1, the 3rd electric capacity C3, the first spheric electrode and
Second spheric electrode；
3rd electric capacity C3 first ends electrically connect with impulse resistance R1 first end, the 3rd electric capacity C3 the second end ground connection；
Impulse resistance R1 the second end electrically connects with the first spheric electrode；
Second spheric electrode electrically connects with the power connection end of high-field electrode 1, the first spheric electrode and the second spheric electrode is non-connects
Touch and set.
It should be noted that when triggering the first spheric electrode or the second spheric electrode, the first spheric electrode and second
Ball gap between spheric electrode can be switched on, and what surge voltage can be delivered to high-field electrode 1 by impulse voltage generator 4 connects electricity
End；
The operation ripple of 250/2500 μ s in the present embodiment using negative polarity returns as High Voltage Impulse Waveform, its surge voltage
Road is as described above.
Further, impulse voltage generator 4 also includes：Protective resistance R2；
Second spheric electrode electrically connects with protective resistance R2 first end, protective resistance R2 the second end and high-field electrode 1
Power connection end electrical connection.
In order to avoid when fortuitous event high-field electrode 1 be grounded or divider open circuit, cause the generation of high current, it is necessary to set
Put protective resistance R2 and carry out current limliting.
Further, in addition to：Video camera；
The position of video camera and the distance of the discharge end of high-field electrode 1 is set to be more than or equal to preset safe distance.
It should be noted that when carrying out flash-over characteristic experiment, video camera can be selected as test situation recorder, such as
100 lightning impulse tests are carried out, electric discharge selection situation and thunder and lightning evolution are recorded by high-speed camera,
Further, first draw the tower top of Reatta scale model 2 and second draw between the tower top of Reatta scale model 3 between
Away from for 6m.
Further, the discharge end of high-field electrode 1 and first draw Reatta scale model 2 tower top spacing and high-field electrode
The spacing of 1 discharge end and the second tower top for drawing Reatta scale model 3 is all 4m.
Further, the length of cylindrical metal rod is 15m, and the diameter of section of cylindrical metal rod is 60mm, metal ball
A diameter of 80mm.
Further, first draws Reatta scale model 2 and the second tower top for drawing Reatta scale model 3 to ground level is all
4.5m。
It should be noted that first draw Reatta scale model 2 and second draw Reatta scale model 3 tower top to ground level
It is all that 4.5m is then that will draw Reatta according to 1:10 contracting draws Reatta scale model 2 and second than ratio is built first and draws Reatta contracting
Than model 3；
In the present embodiment, there is provided 1:10 contracting draw than the first of ratio Reatta scale model 2 and second draw Reatta contracting compare mould
Type 3 carries out selective discharge test, it can be estimated that different operating modes draw Reatta draw thunder ability, and be provided with and actual thunder and lightning
The high-field electrode 1 that descending leader feature is consistent, and the loop of impulse voltage generator 4 for meeting experiment demand can be produced, can
Situation about being occurred with the actual thunder and lightning of real simulation, obtains accurate experimental data.
Reatta scale model lightning test system of drawing in the present embodiment can be to drawing Reatta scale model under different operating modes
Carry out selection discharge test, so as to assess different operating modes draw Reatta draw thunder ability, there is product to research transmission line of electricity lightning protection
The effect of pole, guidance is provided for actual engineering design, solve the current research technique that lacks to drawing Reatta progress simulated test
Technical problem.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
With the specific work process of device, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system and device, it can be passed through
Its mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, only
Only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be the INDIRECT COUPLINGs or logical by some interfaces, device or unit
Letter connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, can be according to reality
Border needs to select some or all of unit therein to realize the purpose of this embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. one kind draws Reatta scale model lightning test system, it is characterised in that including：Impulse voltage generator, high-field electrode,
First draws Reatta scale model, second draws Reatta scale model；
Described first draw the tower top of Reatta scale model and described second draw Reatta scale model tower top it is highly consistent over the ground；
The tower top and described second for drawing Reatta scale model higher than described first to ground level of the discharge end of the high-field electrode
That draws the tower top of Reatta scale model is higher than the high-field electrode to ground level, the power connection end of the high-field electrode to ground level
Discharge end to ground level, spacing and institute of the discharge end of the high-field electrode with the described first tower top for drawing Reatta scale model
The discharge end for stating high-field electrode is consistent with the spacing of second tower top for drawing Reatta scale model；
The output end of the impulse voltage generator electrically connects with the power connection end of the high-field electrode.
2. one kind according to claim 1 draws Reatta scale model lightning test system, it is characterised in that also includes：The
One electric capacity C1, the second electric capacity C2 and oscillograph；
The output end of the impulse voltage generator electrically connects with the first end of the first electric capacity C1；
The second end of the first electric capacity C1 is electric with the first end of the second electric capacity C2 and the input of the oscillograph respectively
Connection；
The second end ground connection of the second electric capacity C2.
3. one kind according to claim 1 draws Reatta scale model lightning test system, it is characterised in that the high-tension electricity
Extremely cylindrical metal rod, the discharge end of the high-field electrode are provided with metal ball.
4. one kind according to claim 1 draws Reatta scale model lightning test system, it is characterised in that the impact electricity
Pressure life implement body includes：Impulse resistance R1, the 3rd electric capacity C3, the first spheric electrode and the second spheric electrode；
The 3rd electric capacity C3 first ends electrically connect with the first end of the impulse resistance R1, the second end of the 3rd electric capacity C3
Ground connection；
The second end of the impulse resistance R1 electrically connects with first spheric electrode；
Second spheric electrode electrically connects with the power connection end of the high-field electrode, first spheric electrode and second ball
The non-contact setting of shape electrode.
5. one kind according to claim 4 draws Reatta scale model lightning test system, it is characterised in that the impact electricity
Pressure generator also includes：Protective resistance R2；
Second spheric electrode electrically connects with the first end of the protective resistance R2, the second end of the protective resistance R2 and institute
State the power connection end electrical connection of high-field electrode.
6. one kind according to claim 1 draws Reatta scale model lightning test system, it is characterised in that also includes：Take the photograph
Camera；
The distance of the position of the video camera and the discharge end of the high-field electrode is set to be more than or equal to preset safe distance.
7. one kind according to claim 1 draws Reatta scale model lightning test system, it is characterised in that described first draws
The tower top of Reatta scale model and the described second spacing drawn between the tower top of Reatta scale model are 6m.
8. one kind according to claim 1 draws Reatta scale model lightning test system, it is characterised in that the high-tension electricity
The discharge end of pole and the spacing of the described first tower top for drawing Reatta scale model and the discharge end of the high-field electrode and described the
Two spacing for drawing the tower top of Reatta scale model are all 4m.
9. one kind according to claim 3 draws Reatta scale model lightning test system, it is characterised in that the cylinder
The length of metal bar is 15m, and the diameter of section of the cylindrical metal rod is 60mm, a diameter of 80mm of the metal ball.
10. one kind according to claim 1 draws Reatta scale model lightning test system, it is characterised in that described first
It to ground level is all 4.5m to draw Reatta scale model and the described second tower top for drawing Reatta scale model.
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| CN109031062A (en) * | 2018-07-16 | 2018-12-18 | 中国南方电网有限责任公司超高压输电公司大理局 | Method and system for calculating 50% discharge voltage under tower gap operation impulse voltage |
| CN109031062B (en) * | 2018-07-16 | 2021-02-09 | 中国南方电网有限责任公司超高压输电公司大理局 | Method and system for calculating 50% discharge voltage under tower gap operation impulse voltage |
| CN109444688A (en) * | 2018-11-15 | 2019-03-08 | 国网山西省电力公司大同供电公司 | A kind of lightning stroke analogue test platform of 10kV power distribution network insulated conductor and screen of trees |
| CN109444688B (en) * | 2018-11-15 | 2020-11-06 | 国网山西省电力公司大同供电公司 | 10kV distribution network insulated conductor and tree obstacle's thunderbolt analogue test platform |
| WO2021109631A1 (en) * | 2019-12-03 | 2021-06-10 | 广东电网有限责任公司 | Lightning withstand level testing method for power transmission line of cross-shaped grounding device |
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