CN103474940A - Comprehensive lightning protection system of electric transmission lines of high tower of power grid - Google Patents
Comprehensive lightning protection system of electric transmission lines of high tower of power grid Download PDFInfo
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- CN103474940A CN103474940A CN2013104488842A CN201310448884A CN103474940A CN 103474940 A CN103474940 A CN 103474940A CN 2013104488842 A CN2013104488842 A CN 2013104488842A CN 201310448884 A CN201310448884 A CN 201310448884A CN 103474940 A CN103474940 A CN 103474940A
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Abstract
The invention discloses a comprehensive lightning protection system of electric transmission lines of a high tower of a power grid. The comprehensive lightning protection system comprises a transformer substation, a grounded multi-stage surge-preventing device and the three-phase electric transmission lines connected with the power grid are led out of a three-phase port of the transformer outbound end of the transformer substation, each phase line of the three-phase electric transmission lines is connected with a voltage isolator in series, the electric transmission lines connected with the power grid and led out of the output ends of the voltage isolators are connected with the high tower, thunder and lightning arresters are arranged at the top of the high tower and connected with a maintainable ground grid embedded below the tower through the metal tower body, the overhead electric transmission lines are supported through all phase insulator strings connected to the tower in a suspended mode, two sides of the insulator string supporting each phase line are respectively provided with a nanometer magnet resistor, and lightning conductors are arranged at the top of the tower in a supported mode. By means of the technical measures, the multilevel, omni-directional and three-dimensional comprehensive lightning protection system which makes high tower protection as the center, attaches equal importance to thunder and lightning counterattack resistance and thunder and lightning shielding failure resistance and conducts omni-directional thunder and lightning protection on the electric transmission lines and the transformer substation is built, and the lightning trip-out rate can be reduced obviously.
Description
Technical field
The present invention relates to a kind of power grid security lightning protection protective system, definitely say the Integrated Lightning protection System that relates to electrical network high tower transmission line.
Background technology
Thunder and lightning is a kind of electric discharge phenomena of earth atmosphere, when normally electronegative thundercloud and the electric field strength between the earth have surpassed therebetween the breakdown strength of atmosphere, the pulsed discharge between thundercloud and the earth has occurred, and is exactly the said thunders and lightnings of people.In the thundercloud discharge process, discharging current sharply increases, arrive the moment on ground at lightning, lightning current is up to tens of kilo-amperes, even can be up to hundreds of kilo-amperes, potential difference at the lightning channel two ends can reach hundreds thousand of volt, and the lightning current place of arrival can cause intense electromagnetic, heat energy and mechanical damage effect.
Electric power system self is due to the start and stop that are subject to powerful device, line fault, and the factor effect meetings such as frequency conversion equipment operation bring inner surge, to power consumption equipment, bring adverse effect, particularly the microelectronic devices such as computer, communication system are brought to great impact.Abnormal and the pause of system operation, can have serious consequences to nuclear power station, medical system, integrated mill's automated system, card volume transaction system, telecommunications office exchange, network hinge etc.
Yet thundercloud discharge is even more serious on the impact of electric power system and power consumption equipment.Overhead transmission line directly is struck by lightning, and line voltage distribution speed is raised to the hundreds of thousands volt and causes insulation sudden strain of a muscle road, and more than near peak current lightning strike spot can reach 100KA, lightning current can transmit the distance more than 1 kilometer on the line, and this destruction is fatal.
In electrical network high tower transmission line, seek effective lightning protection measures, ensure safety and the stable operation of electrical network, be related to carrying out in order and resident's normal life of national economy activity.
In existing electrical network high tower circuit, conventional distribution insulating Design, 0.4KV is 1 insulator, and 10KV is 2 insulators, and insulation level is far below 40KA, and according to the IEEE curve, the ground sudden strain of a muscle that amplitude of lightning current appears in 7-40KA scope accounts for 63.19%.Therefore, mostly dodge and all can cause the electrical network lightning stroke trip, and cause the insulated wire broken string.
Due to the restriction that is subject to the distribution insulator structure, adopt measures such as increasing insulator sheet, increase lightning arrester, installation overhead ground wire, all can not guarantee that the insulation level of circuit dodges lightning current over ground.
Summary of the invention
The object of the invention is to: for high, the transregional length of electrical network high tower transmission line, pull the thunder face large, the characteristics such as the severe section of natural environment is many, provide a kind of centered by the protection of electrical network high tower, anti-counterattack is laid equal stress on anti-shielding, the comprehensive lightning protection of realization to transmission line, transformer station, build Integrated Lightning protection System multi-level, comprehensive, three-dimensional, can significantly reduce the trip-out rate of thunderbolt.
Realize that the object of the invention adopts following technical proposals:
A kind of electrical network high tower power transmission line comprehensive lightning-protection system, it is characterized in that: at the three-phase port of substation transformer departures end, draw respectively the Anti-surging device and the three phase line of delivering to electrical network of ground connection, an overvoltage isolator of serial connection on every phase line of this three phase line, the net transmission line that send of drawing from overvoltage isolator output is delivered to high tower, support overhead transmission line by each phase insulator string articulated on tower, fill a nano magnetic flow plug on the phase line of the insulator string both sides of supporting every phase circuit, at high top of tower, lightning receptor is housed, by the metal tower body be embedded in tower under in the earth mat safeguarded be connected, also set up lightning conducter on tower top.
Described Anti-surging device, the safeguard procedures that the transmission line transient overvoltage is taked: between the three-phase port of holding in the substation transformer departures and the earth, large capacity power source Anti-surging device is set, this device has 100kA/ above maximum impact capacity mutually, and is less than the deboost of 2800V.This level power supply Anti-surging device, can bear the large electric current of thunder and lightning and indirect lightning strike, and absorb the energy of high-energy surge current, and a large amount of surge currents is diverted to the earth.The important function of this power supply Anti-surging device is to the absorption of this part surge energy and inhibition, and the Disabled efficiently solved in overvoltage protection presses problem, for substation secondary device provides overvoltage protection safely and effectively;
Described overvoltage isolator, be one and be enclosed in high pressure resistant impact insulated enclosure sleeve pipe, by multistage L
ir
ic
ithe LRC circuit that element circuit is in series, wherein each L
ir
ic
ielement circuit, the strong sensor magnet ring of polylith nanometer that can be fixed on this inductance coil outer surface by the inductance coil that is contained in a high pressure resistant impact in this insulated enclosure sleeve pipe and interval suit forms, the two ends tipping of circuit has the metal flange of charged line, be serially connected on every phase line of network transformer departures end three phase transmission line, become that to have equivalent inductance be the high-power low pass filter that 100-260 μ Н, equivalent capacity are 80-200pF, no resistance under normal power frequency operation, meeting under 1M-10MHz lightening pulse induction, can produce up to 2 * 10
3Ω-2 * 10
6the high impedance of Ω, intercept the impact of overvoltage to transformer, this overvoltage isolator has minimum withstand voltage for 450KV, anti-effective amplitude of lightning current be 350KA;
Described nano magnetic flow plug; magnet in its housing; to be combined by the two and half nahlock nano magnetic bodies with same diameter and equal thickness; centre at the two and half nahlock nano magnetic bodies that are combined into one is shaped with the power transmission line inserting hole; at the two-end part of a diameter of the two and half nahlock nano magnetic bodies that are combined into one, be shaped with respectively the bolt contiguous block and the connecting bolt thereof that are integral, fix two and half nahlock nano magnetic bodies with the half nahlock nano magnetic bodily form separately;
This nano magnetic flow plug, having saturated magnetic strength is that 1.2T, initial permeability are 8 * 10
4, resistivity is 80 μ Ω/cm, and node formation 48-52 μ H equivalence access inductance are being installed;
Described lightning receptor, to be connected to form by support bar, matrix and syringe needle, matrix includes high pressure resistant impact insulated enclosure sleeve pipe, in its high pressure resistant impact insulated enclosure sleeve pipe, the inductance coil of high pressure resistant impact is housed, and the peripheral surface of this inductance coil, between the upper and lower every suit be fixed with the polylith nanometer and respond to by force the soft magnetic bodies ring, formed so from bottom to top by the multi-level pmultistage circuit unit R
1l
1c
1, R
2l
2c
2... R
nl
nc
nthe rlc circuit be composed in series, at described insulated enclosure sleeve pipe cavity bottom, R
1l
1c
1the nanometer of element circuit lower end is responded to by force the bottom of soft magnetic bodies ring, be hinged with and be fixed with an eradication edge support bar, one section of this insulating support rod top is sealed in described insulated enclosure sleeve pipe cavity, and remainder is exposed to outside sleeve pipe, becomes the insulating supporting be arranged on shaft tower;
The equivalent inductance that this lightning receptor has is 37-80 μ H, and equivalent capacity is 18-42pF; The shock-resistant voltage had is 450-850 kV; The electric current of anti-the maximum impact is 100-290 kA;
Described employing can be safeguarded earth mat, include the vertical grounding electrode that new earthing material titanium alloy is manufactured, and be contained in the titanium alloy ground connection pricker of this earth electrode periphery horizontal direction, be embedded in the high molecular polymer slowly-releasing water-loss reducer in the earth electrode surrounding soil, by soil water filling, water conservation, keep for a long time soil resistivity stable.The resistance measure of falling of taking is to adopt the titanium alloy vertical grounding electrode, and adds the titanium alloy ground connection pricker of horizontal direction at its periphery dress, by its horizontal grounding length of suitable increase, reduces earth resistance, guarantees the withstand voltage level of transmission line.
Distribution Integrated Lightning protection System of the present invention adopts abovementioned technology to have following outstanding advantages:
(1) at the three-phase port of substation transformer departures end, be hinged with an end and connect overvoltage isolator input, the Anti-surging device of other end ground connection, can protect transformer station's first and second equipment, effectively solves the residual voltage problem in overvoltage protection.
(2) on the three-phase port transmission line of substation transformer departures end, the overvoltage isolator is installed: due to this anti-lightning overvoltage isolator, under normal power frequency, under no resistance, low-frequency operation, impedance is very little, but, meeting under 1M-10MHz lightening pulse induction, can produce up to 2 * 10
3Ω-2 * 10
6the high impedance of Ω, can effectively make lightning overvoltage ripple and the propagation of switching overvoltage ripple that high fdrequency component is abundant be obstructed, form the complicated communication process such as reflection, standing wave, make over-voltage waveform distorted, broadening, reduce overvoltage wave steepness and amplitude, level and smooth over-voltage waveform, realized buffering and isolation that overvoltage is impacted, thereby intercepted the impact of overvoltage to transformer, thunder and lightning is destroyed and be difficult to be diffused into transformer station, improved equivalently the lightning withstand level of transformer station.
(3) the nano magnetic flow plug be equipped with on the phase line of the insulator string both sides of supporting every phase circuit, can carry out filtering, dispersion, reflection, radiation to lightning overvoltage, effectively hinders the transmission of around shocking electric wave.
(4) be contained in the lightning receptor on shaft tower top, lightning wave is had to the effect that good peak clipping is fallen apprentice, the shunting of impact lightning current and effectively reduced the tower top current potential, can realize Lightning Shielding and counterattack protection double effects near Lightening zone shaft tower.
(5) be contained in the lightning conducter on high top of tower, can realize effective protection that direct lightning strike is attacked, document records the protection effect of 99.5%-99.9%.
(6) adopt and can safeguard earth mat, include the vertical grounding electrode of manufacturing with new earthing material titanium alloy, can solve current use traditional metal materials easy-to-rust and cause the problem of earth resistance rising.Be contained in the titanium alloy ground connection pricker of earth electrode periphery horizontal direction, the horizontal grounding length that has increased earth electrode has reduced earth resistance.
Experiment shows impulse resistance and the direct positive correlation of soil moisture of earth electrode, and the impulse current of different frequency can be with the larger response difference of the different appearance of soil moisture.So soil resistivity is the heaviest factor that affects earth electrode validity.Can safeguard that earth mat is by high molecular polymer slowly-releasing water-loss reducer is embedded in the earth electrode surrounding soil, toward measures such as water filling in soil, water conservations, keep for a long time soil resistivity stable, thereby improve the withstand voltage level of transmission line.
In sum, in electrical network high tower transmission line, by installing Anti-surging device, overvoltage isolator, nano magnetic flow plug, lightning receptor, lightning conducter and can safeguarding six technical measures of earth mat, set up centered by high tower protection, the thunder-lightning counterattack lays equal stress on shielding, transmission line, transformer station are implemented to the Integrated Lightning protection System of multi-level, comprehensive, the three-dimensional of comprehensive lightning protection, can significantly reduce tripping rate with lightning strike.
The accompanying drawing explanation
Fig. 1 is that electrical network high tower power transmission line comprehensive lightning-protection system of the present invention forms schematic diagram,
Fig. 2 is electrical network high tower power transmission line comprehensive lightning-protection system high tower of the present invention position installation diagram,
Fig. 3 is overvoltage isolator electrical structure schematic diagram in Integrated Lightning protection System of the present invention,
Fig. 4 is nano magnetic flow plug structural representation in Integrated Lightning protection System of the present invention,
Fig. 5 is nano magnetic flow plug schematic equivalent circuit in Integrated Lightning protection System of the present invention,
Fig. 6 is lightning receptor structural representation in Integrated Lightning protection System of the present invention,
Can safeguard the titanium alloy vertical grounding electrode structural representation of earth mat in Fig. 7 Integrated Lightning protection System of the present invention,
Mark in figure: 5-1 is two and half nahlock nano magnetic bodies in the nano magnetic flow plug, and 5-2 is fixing nanometer magnet
Bolt, the contiguous block that 5-3 is the nano magnetic end of body, 5-4 is the power transmission line conductor cores, 5-5 is the conductor foreskin, 6
For high tower, 7 is the lightning receptor on high tower top, and 7-1 is the arrester thimble, and 7-4 is the strong induced magnetism of nanometer
Body, 7-5 is high pressure resistant kicker coil, and 8 is lightning conducter, and 9 is each phase insulator string articulated on high tower, 10
For being embedded in the underground earth mat safeguarded at the bottom of tower.
Embodiment
Below in conjunction with accompanying drawing, describe the present invention.
fig. 1 and Fig. 2 are the present inventionelectrical network high tower power transmission line comprehensive lightning-protection system schematic diagram, in figure, system includes: transformer station 1, three-phase port at transformer station's 1 transformer departures end, draw respectively the multistage Anti-surging device 2 and the three phase line 3 of delivering to electrical network of ground connection, an overvoltage isolator 4 of serial connection on every phase line of this three phase line 3, the net transmission line that send of drawing from overvoltage isolator 4 outputs is delivered to high tower 6, support built on stilts every phase circuit by each phase insulator string 9 articulated on high tower 6, fill a nano magnetic flow plug 5 on the phase line of insulator string 9 both sides of supporting every phase circuit, at high tower 6 tops, lightning receptor 7 is housed, the safeguarded earth mat 10 underground with being embedded in high tower 6 by the metal tower body is connected, at the high tower 6 added lightning conducters 8 that are provided with in top.
Anti-surging device 2 is safeguard procedures that the transmission line transient overvoltage is taked:
Between the three-phase port of substation transformer departures end and the earth, large capacity power source Anti-surging device is set, this device has 100kA/ above maximum impact capacity mutually, and is less than the deboost of 2800V.This level power supply Anti-surging device, can bear the large electric current of thunder and lightning and indirect lightning strike, and absorb the energy of high-energy surge current, and a large amount of surge currents is diverted to the earth.The important function of power supply Anti-surging device is to the absorption of this part surge energy and inhibition, and the Disabled efficiently solved in overvoltage protection presses problem, for secondary device provides overvoltage protection safely and effectively.
In described overvoltage isolator, being fixed on the strong sensor magnet ring of the nanometer adopted on the inductance coil outer surface, is to be made and be take the Fe element as main body by nano-powder, and the 10-20 nm crystallite state that adulterate a small amount of Ni, Mn, Mg, Nb element form is responded to by force the nanometer magnet.
In Integrated Lightning protection System, due to this anti-lightning overvoltage isolator under normal power frequency operation under no resistance, low-frequency operation impedance very little, but, meeting under 1M-10MHz lightening pulse induction, can produce up to 2 * 10
3Ω-2 * 10
6the high impedance of Ω, can effectively make lightning overvoltage ripple and the propagation of switching overvoltage ripple that high fdrequency component is abundant be obstructed, form the complicated communication process such as reflection, standing wave, make over-voltage waveform distorted, broadening, overvoltage wave steepness and amplitude, level and smooth over-voltage waveform have been reduced, buffering and isolation that realization is impacted overvoltage, thus the impact of overvoltage to transformer reduced, thunder and lightning is destroyed and be difficult to be diffused into transformer station.
Nano magnetic flow plug 5 in Integrated Lightning protection System, as shown in Figure 4: the magnet in housing, to be combined by the two and half nahlock nano magnetic body 5-1 with same diameter and equal thickness, centre at the two and half nahlock nano magnetic body 5-1 that are combined into one is shaped with the power transmission line inserting hole, at the two-end part of a diameter of the two and half nahlock nano magnetic bodies that are combined into one, be shaped with respectively the bolt contiguous block 5-3 and the connecting bolt 5-2 thereof that are integral, fix two and half nahlock nano magnetic body 5-1 with the half nahlock nano magnetic bodily form separately.
The magnet that this nano magnetic flow plug adopts, to make and take the Fe element as main body by nano-powder, 10-20 nm crystallite state nanometer magnets that a small amount of Ni, Al, Co, Mn element form that adulterate are that to have saturation induction density be that 1.2T, initial permeability are 8 * 10
4, resistivity is 80 μ Ω/cm, at the nanometer magnet that node formation 48-52 μ H equivalence access inductance are installed;
This nano magnetic flow plug internal diameter is that 18 mm, external diameter are that 240 mm, thickness are that 35-70 mm, weight are 2-5 kg.
Find out and can carry out filtering, dispersion, reflection, radiation to the lightning impulse overvoltage from its equivalent electric circuit Fig. 5, effectively hinder the transmission of around shocking electric wave.
Lightning receptor 7 in Integrated Lightning protection System, as shown in Figure 6: by support bar 7-7, matrix and syringe needle 7-1, connected to form.
This lightning receptor matrix: include high pressure resistant impact insulated enclosure sleeve pipe 7-6, and the inductance coil 7-5 that high pressure resistant impact is housed in high pressure resistant impact insulated enclosure sleeve pipe 7-6 cavity, and the peripheral surface of this inductance coil 7-5, between the upper and lower every suit be fixed with the polylith nanometer and respond to by force soft magnetic bodies ring 7-4, formed so from bottom to top by the multi-level pmultistage circuit unit R
1l
1c
1, R
2l
2c
2... R
nl
nc
nthe rlc circuit be composed in series, at described insulated enclosure sleeve pipe 7-6 cavity bottom, R
1l
1c
1the nanometer of element circuit lower end is responded to by force the bottom of soft magnetic bodies, be hinged with and be fixed with an eradication edge support bar 7-7, one section of this insulating support rod 7-7 top is sealed in described insulated enclosure sleeve pipe 7-6 cavity, and remainder is exposed to outside sleeve pipe 7-6, become the insulating supporting be arranged on shaft tower.
The equivalent inductance that this lightning receptor has is 37-80 μ H, and equivalent capacity is 18-42pF; The shock-resistant voltage had is 450-850 kV; The electric current of anti-the maximum impact is 100-290 kA.
In this lightning receptor, be fixed on the nanometer adopted on the inductance coil outer surface and respond to by force the soft magnetic bodies ring, be to be made and be take the Fe element as main body by nano-powder, the 10-20 nm crystallite state that adulterate a small amount of Ni, Sn, Si, Nb element form is responded to by force the nano soft magnetic body.
Press 5 kinds of products and use specification, the equivalent inductance had is respectively 37 μ H, 50 μ H, 62 μ H, 78 μ H, 88 μ H; Corresponding equivalent capacity is respectively 18 pF, 20 pF, 24 pF, 33 pF, 42pF;
The shock-resistant voltage had is respectively 450kV, 550kV, 650 kV, 750 kV, 850 kV; The corresponding electric current of anti-the maximum impact is respectively 100 kA, 180 KA, 230 kA, 260 kA, 290 kA;
And corresponding lightning receptor matrix length is respectively 1500 mm, 2000 mm, 2400 mm, 2800 mm, 3800 mm, corresponding weight is respectively 8 kg, 10 kg, 11 kg, 13 kg, 22 kg;
This lightning receptor, have to lightning wave the effect that good peak clipping is fallen apprentice, the shunting of impact lightning current and effectively reduced the tower top current potential, can realize Lightning Shielding and counterattack protection double effects near Lightening zone shaft tower.
Be contained in the lightning conducter 8 on high top of tower, can realize effective protection that direct lightning strike is attacked, document records the protection effect of 99.5%-99.9%.
Integrated Lightning protection System can be safeguarded earth mat 10, as shown in Figure 7: be the vertical grounding electrode P manufactured by titanium alloy
1and at earth electrode P
1the titanium alloy ground connection pricker P of the horizontal direction that periphery is fixing
2institute forms; The vertical grounding electrode of manufacturing with new earthing material titanium alloy, can solve current use traditional metal materials easy-to-rust and the problem that causes earth resistance to raise.Be contained in the titanium alloy ground connection pricker of earth electrode periphery horizontal direction, the horizontal grounding length that has increased earth electrode has reduced earth resistance.Can safeguard that earth mat is by high molecular polymer slowly-releasing water-loss reducer is embedded in the earth electrode surrounding soil, toward measures such as water filling in soil, water conservations, keep for a long time soil resistivity stable, thereby improve the withstand voltage level of transmission line.
In electrical network high tower transmission line, by installing Anti-surging device 2, overvoltage isolator 4, nano magnetic flow plug 5, lightning receptor 7, lightning conducter 8 and can safeguarding 10 6 technical measures of earth mat, set up centered by high tower protection, the thunder-lightning counterattack lays equal stress on shielding, transmission line, transformer station are implemented to the Integrated Lightning protection System of multi-level, comprehensive, the three-dimensional of comprehensive lightning protection, can significantly reduce tripping rate with lightning strike.
Claims (6)
1. an electrical network high tower power transmission line comprehensive lightning-protection system is characterized in that: transformer station (
1) the three-phase port of transformer departures end, draw respectively the multistage Anti-surging device (2) of ground connection and deliver to the three phase line (3) of electrical network, all be connected in series an overvoltage isolator (4) on every phase line of this three phase line (3), the net transmission line that send of drawing from overvoltage isolator (4) output is delivered to high tower (6), support overhead transmission line by each phase insulator string (9) articulated on high tower (6), fill a nano magnetic flow plug (5) on the phase line of insulator string (9) both sides of supporting every phase circuit, at high tower (6) top, lightning receptor (7) is housed, the safeguarded earth mat (10) underground with being embedded in high tower (6) by the metal tower body is connected, push up the added lightning conducter (8) that is provided with at high tower (6), wherein:
Described Anti-surging device (2): be arranged between substation transformer departures end three-phase port and the earth and there is 100kA/ above maximum impact current capacity mutually, and be less than the large capacity power source Anti-surging device of 2800V deboost;
Described overvoltage isolator (
4), be one and be enclosed in high pressure resistant impact insulated enclosure sleeve pipe, by multistage
?l
ir
ic
ithe LRC circuit that element circuit is in series, wherein each L
ir
ic
ielement circuit, the strong sensor magnet ring of polylith nanometer that can be fixed on this inductance coil outer surface by the inductance coil that is contained in a high pressure resistant impact in this insulated enclosure sleeve pipe and interval suit forms, the two ends tipping of circuit has the metal flange of charged line, be serially connected on every phase line of network transformer departures end three phase transmission line, become that to have equivalent inductance be the high-power low pass filter that 100-260 μ Н, equivalent capacity are 80-200pF, no resistance under normal power frequency operation, meeting under 1M-10MHz lightening pulse induction, can produce up to 2 * 10
3Ω-2 * 10
6the high impedance of Ω, intercept the impact of overvoltage to transformer; The overvoltage isolator has minimum withstand voltage for 450KV, anti-effective amplitude of lightning current be 350KA;
Described nano magnetic flow plug (5), magnet in its housing, to be combined by the two and half nahlock nano magnetic bodies with same diameter and equal thickness, centre at the two and half nahlock nano magnetic bodies that are combined into one is shaped with the power transmission line inserting hole, at the two-end part of a diameter of the two and half nahlock nano magnetic bodies that are combined into one, be shaped with respectively the bolt contiguous block and the connecting bolt thereof that are integral, fix two and half nahlock nano magnetic bodies with the half nahlock nano magnetic bodily form separately; This nano magnetic flow plug, having Saturation magnetic sense intensity is that 1.2T, initial permeability are 8 * 10
4, resistivity is 80 μ Ω/cm, and node formation 48-52 μ H equivalence access inductance are being installed;
Described lightning receptor (7), to be connected to form by support bar (7-7), matrix and syringe needle (7-1), matrix includes high pressure resistant impact insulated enclosure sleeve pipe (7-6), and the inductance coil (7-5) that high pressure resistant impact is housed in high pressure resistant impact insulated enclosure sleeve pipe (7-6) cavity, and the peripheral surface of this inductance coil (7-5), between the upper and lower every suit be fixed with the polylith nanometer and respond to by force soft magnetic bodies ring (7-4), formed so from bottom to top by the multi-level pmultistage circuit unit R
1l
1c
1, R
2l
2c
2... R
nl
nc
nthe rlc circuit be composed in series, at described insulated enclosure sleeve pipe (7-6) cavity bottom, R
1l
1c
1the nanometer of element circuit lower end is responded to by force the bottom of soft magnetic bodies ring (7-4), be hinged with and be fixed with an eradication edge support bar (7-7), one section of this insulating support rod (7-7) top is sealed in described insulated enclosure sleeve pipe (7-6) cavity, and remainder is exposed to outside sleeve pipe (7-6), become the insulating supporting be arranged on shaft tower;
This lightning receptor, the equivalent inductance had is 37-80 μ H, equivalent capacity is 18-42pF; Shock-resistant voltage is 450-850 kV; Shock-resistant electric current is 100-290 kA;
The described earth mat (10) of safeguarding, include the vertical grounding electrode (10-1) of titanium alloy and be fixed on the titanium alloy ground connection pricker (10-2) of the horizontal direction of earth electrode (10-1) periphery
,be embedded in the high molecular polymer slowly-releasing water-loss reducer in earth electrode (10-1) surrounding soil, by soil water filling, water conservation, keep for a long time soil resistivity stable.
2. according to electrical network high tower power transmission line comprehensive lightning-protection system claimed in claim 1, it is characterized in that:
Described lightning receptor (7) matrix, length is that 1500 mm, weight are 8 kg; It is that 37 μ H, equivalent capacity are that 18 pF, maximum shock-resistant electric current are 100 kA that thunder and lightning connects umbrella device equivalent inductance, and maximum is withstand voltage is 450 kV.
3. according to electrical network high tower power transmission line comprehensive lightning-protection system claimed in claim 1, it is characterized in that:
Described lightning receptor (7) matrix, length is that 2000 mm, weight are 10 kg; It is that 50 μ H, equivalent capacity are that 20 pF, maximum shock-resistant electric current are 180 kA that thunder and lightning connects umbrella device equivalent inductance, and maximum is withstand voltage is 550 kV.
4. according to electrical network high tower power transmission line comprehensive lightning-protection system claimed in claim 1, it is characterized in that:
Described lightning receptor (7) matrix, length is that 2400 mm, weight are 11 kg; It is that 62 μ H, equivalent capacity are that 24 pF, maximum shock-resistant electric current are 230 kA that thunder and lightning connects umbrella device equivalent inductance, and maximum is withstand voltage is 650 kV.
5. according to electrical network high tower power transmission line comprehensive lightning-protection system claimed in claim 1, it is characterized in that:
Described lightning receptor (7) matrix, length is that 2800 mm, weight are 13kg; It is that 78 μ H, equivalent capacity are that 33 pF, maximum shock-resistant electric current are 260 kA that thunder and lightning connects umbrella device equivalent inductance, and maximum is withstand voltage is 750 kV.
6.
oneaccording to electrical network high tower power transmission line comprehensive lightning-protection system claimed in claim 1, it is characterized in that:
Described lightning receptor (7) matrix, length is that 3800 mm, weight are 22kg; It is that 80 μ H, equivalent capacity are that 42pF, maximum shock-resistant electric current are 290 kA that thunder and lightning connects umbrella device equivalent inductance, and maximum is withstand voltage is 850 k.
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| CN110137935A (en) * | 2019-06-04 | 2019-08-16 | 张安斌 | A kind of power grid lightning protection isolating device |
| CN110247384A (en) * | 2019-04-18 | 2019-09-17 | 江苏海事职业技术学院 | A kind of lightning-protection system and its lightening arresting method for outdoor power distribution station |
| CN110865271A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Lightning trip-out rate test method considering line soil resistivity differentiation |
| CN110865269A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Power transmission line shielding failure trip rate evaluation method based on particle swarm optimization |
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| CN110865266A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Lightning-resistant horizontal test method for power transmission line of cross-shaped grounding device |
| CN110865265A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Method for testing counterattack trip-out rate of power transmission line in mountain area |
| CN110865267A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Evaluation method for shielding failure trip-out rate of 110kV power transmission line |
| CN110865268A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Method for testing lightning trip-out rate of transmission tower in low-soil resistivity region |
| CN110907773A (en) * | 2019-12-03 | 2020-03-24 | 广东电网有限责任公司 | Lightning-resistant level evaluation method for lightning-strike power transmission line in high-soil-resistivity area |
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| CN110865271A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Lightning trip-out rate test method considering line soil resistivity differentiation |
| CN110865268A (en) * | 2019-12-03 | 2020-03-06 | 广东电网有限责任公司 | Method for testing lightning trip-out rate of transmission tower in low-soil resistivity region |
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| CN110865271B (en) * | 2019-12-03 | 2021-07-13 | 广东电网有限责任公司 | Lightning trip-out rate test method considering line soil resistivity differentiation |
| CN110865266B (en) * | 2019-12-03 | 2021-07-13 | 广东电网有限责任公司 | Lightning-resistant horizontal test method for power transmission line of cross-shaped grounding device |
| CN110907773B (en) * | 2019-12-03 | 2021-07-13 | 广东电网有限责任公司 | Lightning-resistant level evaluation method for lightning-strike power transmission line in high-soil-resistivity area |
| CN110865267B (en) * | 2019-12-03 | 2021-07-13 | 广东电网有限责任公司 | Evaluation method for shielding failure trip-out rate of 110kV power transmission line |
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