CN109236588A - It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso - Google Patents
It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso Download PDFInfo
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- CN109236588A CN109236588A CN201811357914.8A CN201811357914A CN109236588A CN 109236588 A CN109236588 A CN 109236588A CN 201811357914 A CN201811357914 A CN 201811357914A CN 109236588 A CN109236588 A CN 109236588A
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- lightning
- protection
- denso
- needle
- bands
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/30—Lightning protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses a kind of to be analyzed based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso, including to field bands Denso for required radius of protection and protection height；And lightning protection operation is carried out for radius of protection and protection height to field bands Denso；By the way that severe non-uniform electric field is changed into relatively uniform electric field environment; protected equipment is set not to be struck by lightning or be struck by lightning less; when avoiding electrification equipment using conventional lightning conductor, lightning current damages electronic component by the induced voltage that ground wire generates or destroys the insulation of electrical equipment；And uniform electric field is solved the problems, such as by way of charge, make cement shaft tower etc. that charge can be connected and install on cement shaft tower and do not have to transformation grounded screen；The technology lightning protection standby for nature bands Denso has apparent effect；The lightning protection problem of the lightning protection principle of the technology to have supplemented perfect modern electrification equipment, for sophisticated equipment safety and army's field equipment important in inhibiting.
Description
Technical field
Present invention relates particularly to a kind of based on the standby lightning protection skill stealthy to thunder and lightning of uniform electric field theory field bands Denso
Art.
Background technique
The standard of thunder-lightning disaster was around American scientist Benjamin's Franklin's invention lightning rod in 1749 at present
Work basic principle is by drawing thunder in itself discharging thunder energy, which, which is applicable in, protects building construction.Modern industry
Development cannot be suitble to thunder and lightning to require charging operation and tightened up lightning protection object protection, so using lightning rod principle
In the case of circuit generates when passing through ground wire release current momentary pulse induced voltage damage that electronic component is generated it is very tight
Weight, irregular-shaped objects, special shape object there is also being difficult to overcome the problems, such as protection, such as tall and big Wind turbines, it is long away from
All there are problems that obviously overcoming direct attack, counterattack, shielding thunder from line protection.Electric network fault statistic of classification shows
In defeated, distribution line operation total tripping times, since tripping times caused by being struck by lightning account for about total tripping times 70%--80%.
Lightning hazards, which have become, destroys one of three big factors for seriously affecting safe operation of electric network arranged side by side with natural calamity, external force.Fortune
Electrification equipment of the row in field is easily subject to be struck by lightning, it has " stick-plate " it generates extremely non-uniform field environment and is formed and be easy to put
The condition of electricity, the lightning conducter on transmission line of electricity are the theories according to the pre- thunder-lightning of conventional house with thunder energy guard wire of releasing
Road.The lightning surge as caused by thunder and lightning causes the equipment failures problem such as route very prominent, it would be highly desirable to carry out further investigation comprehensively
It solves.Nature bands Denso is standby to refer to land and offshore wind farm unit, transmission line of electricity (wind field claims to collect electric line), sea
Upper workbench, in Mobile Equipment of opening etc. is all that thunder easily hits target at communication steel tower.Under thunder and lightning environment lightning rod or
Lightning conducter causes extremely non-uniform space electric field environment, and the purpose of lightning rod working principle is exactly the mesh for causing easily to be struck by lightning
Mark, this is just as tearing a piece of paper, and when a piece of paper has gap, stress will be concentrated in opening position, lightning-arrest under thunder and lightning environment
Needle is exactly the accumulation point of thundercloud discharge stress.The equipment Lightning Disaster such as Wind turbines, transmission line of electricity is solved, is worldwide ask
Topic and global problem.
Summary of the invention
In view of this, the object of the present invention is to provide one kind by the way that severe non-uniform electric field is changed into relatively uniform electric field loop
Border, to change the course bearing of pilot discharge, so that protected equipment is not struck by lightning or is struck by lightning less, it is isolated to nature
Electrification equipment carries out the shocking preventing technology of lightning protection.
To solve the above-mentioned problems, the technical scheme is that
It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso, including to field bands
Denso is analyzed for required radius of protection and protection height, and to field bands Denso for radius of protection and protection height
Carry out lightning protection operation；It is described that analysis is carried out for according to difference for required radius of protection and protection height to field bands Denso
Equipment lightning protection need it is different stress, such as transmission line of electricity reduction lightning stroke need to improve radius of protection, wind turbine
The maximum difficulty of the lightning protection of group is height, and Wind turbines blade is the dynamic process of rotation, is not only needed in this way
Radius of protection also needs to adapt to the performance of height and protection lightning stroke in a dynamic condition；It is described standby to field bands Denso to protect
Shield radius and protection height carry out lightning protection operation to need to improve radius of protection according to collection electric line, so needle is divided into three layers, and
Wind turbines are of less demanding to radius of protection, high to requiring vertically upward, the tow sides upper angle in each blade with
It is vertically equipped within 45 ° in needle and cabin and needle is installed.
Further, the needle of the first layer is vertical direction, and the angle that the needle of the second layer is formed with vertical direction is greater than
45 °, the angle that the needle and vertical direction of third layer are formed is greater than 70 °.
Further, the electric power line pole tower 10.5kV tower is away from for 50m, 35kV 100m-200m, 220kV 200m-
300m, thus the radius of protection of different voltages grade 50m-150m difference, so the quantity of needle we take first layer to take 1,
The second layer takes 7, and third layer takes 7.
Further, the tow sides upper angle of each blade of the Wind turbines is distributed 3 within 45 ° with vertical
Root, 3 blade 18 plus 7 in cabin totally 25 needles, when it is dynamic, upward needle is less than 25.
Further, the length value of the needle is 50m according to the distance between shaft tower of 10.5kV route, and needle length is greater than
The tower of 1.5m, 35kV are greater than 2.5m away from for 100-200m, needle is long, and for 110kV tower away from being 200-300m, needle is long to be greater than 3m.
Beneficial effects of the present invention: it by the way that severe non-uniform electric field is changed into relatively uniform electric field environment, therefore changes
The course bearing of pilot discharge avoids electrification equipment and uses tradition so that protected equipment is not struck by lightning or is struck by lightning less
When lightning rod, lightning current damages electronic component by the induced voltage that ground wire generates or destroys the insulation of electrical equipment；And
Uniform electric field is solved the problems, such as by way of charge, and cement shaft tower etc. is made charge can be connected and install not on cement shaft tower
With transformation grounded screen；The technology lightning protection standby for nature bands Denso has apparent effect；The technology is prevented
The lightning protection problem of thunder principle to have supplemented perfect modern electrification equipment, there is emphatically sophisticated equipment safety and army's field equipment
Want meaning.
Detailed description of the invention
Fig. 1 is the lightning rod mounting means collected in electric line.
Fig. 2 is the lightning rod mounting means on Wind turbines blade.
Fig. 3 is the lightning rod mounting means on wind turbine cabin.
Fig. 4 is normal unit and the unit discharge scenario for being mounted with shocking preventing technology.
Fig. 5 is 2 normal unit discharge scenarios.
Specific implementation method
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clearly and completely
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso, including to field orphan
Radius of protection required for vertical electrification is equipped and protection height are analyzed, and to field bands Denso for radius of protection and protection
Height carries out lightning protection operation；It is described to field bands Denso for required radius of protection and protection height analyze according to
Different equipment lightning protections need it is different stress, such as collection electric line need to improve radius of protection, because of 10.5kV line
The distance between the shaft tower on road is 50m, and the tower of 35kV is away from for 100-200m, and 110kV tower is away from 200-300m, therefore different protections
Object have it is different need key problems-solving, so needle we take vertical direction, take with vertical direction in 45 ° of directions, take with
Vertical direction is in 70 ° of directions；We take vertical 1 to its quantity, and 45 ° take 7, and 70 ° take 7, the lightning protection in the collection electric line
Needle mounting means is as shown in Figure 1, label 1 is current collection overhead line structures in Fig. 1, and the label 2 in Fig. 1 is lightning rod, and Wind turbines
It is of less demanding to radius of protection, it is high to requiring vertically upward, on the tow sides of each blade and angle with vertical at 45 ° points
Cloth 3, two sides is 6,3 blade 18 plus 7 in cabin totally 25 needles, the lightning rod mounting means on the blade is such as
Shown in Fig. 2, label 3 is blade in Fig. 2, and label 4 is lightning rod in Fig. 2, lightning rod mounting means such as Fig. 3 institute in the cabin
Show, label 5 is cabin in Fig. 3, and the label 6 in Fig. 3 is lightning rod, and when it is dynamic, upward needle is less than 25；The needle
Length value is 50m according to the distance between shaft tower of 10.5kV route, and needle is long to take 1.5m, the tower of 35kV away from for 100-200m,
Needle is long to take 2.5m, and for 110kV tower away from being 200-300m, needle, which is grown, takes 3m；As long as the needle connects in original earthed system, do not have to
Increase Grounding Network Reconstruction, and cement shaft tower is unable to conducting electric current, but it is the conductor of charge, therefore, on cement shaft tower
Installation is grounded again without increase, and the needle in blade, as long as being also connected to, lightning rod ground line is upper, and cabin is electric conductor peace
It loads onto.
Associated analog verification experimental verification: the scale bar of test model is carried out by model in High-Voltage Experimentation room according to above scheme
Degree is 1:1000；For nature thundercloud discharge height generally in 600 meters of -1000 meters of ranges, this test simulation vertical height takes 800
Rice, height is 800 millimeters to the simulation in laboratory perpendicular to the ground；Simulating horizontal distance between different wind turbine models is 200
Rice, the dummy level distance in laboratory is 200 millimeters；Thundercloud electric field is simulated, using negative polarity electrostatic field；Practical nature
Breakdown voltage is related with many natural conditions, but proportionate relationship is that have similitude；Different when thunder and lightning, laboratory occurs for nature
Lightning can be recurred, nature only occurs its primary charge and just releases energy, and second of lightning will not occur；The object of progress
L-G simulation test is managed, such as: the wind turbine model by transformation carries out lightning protection effect comparison, Fig. 4 with without the model by transformation
For normal unit and the unit discharge scenario for being mounted with shocking preventing technology, the unit in left side is normal unit, right side in Fig. 4 in Fig. 4
Unit be the unit for being mounted with shocking preventing technology, Fig. 5 is 2 normal unit discharge scenarios, is obtained from above-mentioned experiment by being transformed
Wind turbine model and improve 15%-20% without model the former breakdown voltage by being transformed, this is equivalent to pole
Non-uniform electric field (high pressure technique claims " needle-plate " can cause severe non-uniform electric field on lightning rod) changes into relatively uniform electric field loop
Border improves " needle-plate " to " board-to-board "；So-called " needle-plate " and " board-to-board " are the physical phenomenons of capacitor in physics；Passing through
High-pressure physics l-G simulation test it is concluded that be " quantity of needle since 21 breakdown voltage of every increase all be stepped up until
Do not increasing after more than ten, is almost keeping breakdown voltage at more than ten to twenties, be further added by needle after twenties and hit instead
It is substantially identical as lightning rod for wearing the breakdown voltage that voltage is begun to decline when increasing close to 50.
The beneficial effects of the present invention are: by the way that severe non-uniform electric field is changed into relatively uniform electric field environment, therefore change
The course bearing of pilot discharge so that protected equipment be not struck by lightning or it is few be struck by lightning, avoid electrification equipment using passing
When system lightning rod, lightning current damages electronic component by the induced voltage that ground wire generates or destroys the insulation of electrical equipment；With
And uniform electric field is solved the problems, such as by way of charge, so that cement shaft tower etc. charge can be connected and be installed on cement shaft tower
Without grounded screen is transformed；The technology lightning protection standby for nature bands Denso has apparent effect；The technology
The lightning protection problem of lightning protection principle to have supplemented perfect modern electrification equipment, there is sophisticated equipment safety and army's field equipment
Significance.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, it is any without
The change or replacement that creative work is expected are crossed, should be covered by the scope of protection of the present invention.
Claims (5)
1. a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso, it is characterised in that: packet
It includes and field bands Denso is analyzed for required radius of protection and protection height, and to the standby protection of field bands Denso
Radius and protection height carry out lightning protection operation；It is described that field bands Denso is carried out for required radius of protection and protection height
Analysis for according to different equipment lightning protections need it is different stress, such as transmission line of electricity reduction lightning stroke need improve guarantor
Radius is protected, the maximum difficulty of the lightning protection of Wind turbines is height, and Wind turbines blade is the dynamic process of rotation, this
Sample not only needs the performance that radius of protection also needs to adapt to height and protection lightning stroke in a dynamic condition；It is described lonely to field
Vertical electrification equipment radius of protection and protection height carry out lightning protection operation to need to improve radius of protection according to collection electric line, so needle
It is divided into three layers, and Wind turbines are of less demanding to radius of protection, it is high to requiring vertically upward, it is described positive and negative the two of each blade
Face upper angle is equipped with needle with vertical be equipped in needle and cabin within 45 °.
2. a kind of based on the standby lightning protection skill stealthy to thunder and lightning of uniform electric field theory field bands Denso as described in claim 1
Art, it is characterised in that: the needle of the first layer is vertical direction, and the angle that the needle of the second layer and vertical direction are formed is greater than 45 °, the
The angle that three layers of needle and vertical direction is formed is greater than 70 °.
3. a kind of based on the standby lightning protection skill stealthy to thunder and lightning of uniform electric field theory field bands Denso as described in claim 1
Art, it is characterised in that: the electric power line pole tower 10.5kV tower is away from for 50m, 35kV 100m-200m, 220kV 200m-
300m, thus the radius of protection of different voltages grade 50m-150m difference, so the quantity of needle we take first layer to take 1,
The second layer takes 7, and third layer takes 7.
4. a kind of based on the standby lightning protection skill stealthy to thunder and lightning of uniform electric field theory field bands Denso as described in claim 1
Art, it is characterised in that: the tow sides upper angle of each blade of the Wind turbines with it is vertical within 45 ° be distributed 3,3
A blade 18 plus 7 in cabin totally 25 needles, when it is dynamic, upward needle is less than 25.
5. a kind of based on the standby lightning protection skill stealthy to thunder and lightning of uniform electric field theory field bands Denso as claimed in claim 3
Art, it is characterised in that: the length value of the needle is 50m according to the distance between shaft tower of 10.5kV route, and needle length is greater than
The tower of 1.5m, 35kV are greater than 2.5m away from for 100-200m, needle is long, and for 110kV tower away from being 200-300m, needle is long to be greater than 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811357914.8A CN109236588A (en) | 2018-11-15 | 2018-11-15 | It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811357914.8A CN109236588A (en) | 2018-11-15 | 2018-11-15 | It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso |
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| Publication Number | Publication Date |
|---|---|
| CN109236588A true CN109236588A (en) | 2019-01-18 |
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| CN201811357914.8A Pending CN109236588A (en) | 2018-11-15 | 2018-11-15 | It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso |
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Inventor after: Wang Peng Inventor after: Wang Songnan Inventor before: Wang Peng |