CN106653169B - Two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on a kind of overhead transmission line - Google Patents
Two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on a kind of overhead transmission line Download PDFInfo
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- 239000004703 cross-linked polyethylene Substances 0.000 claims description 6
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910017706 MgZn Inorganic materials 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0225—Three or more layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
- H01B7/207—Metal tubes, e.g. lead sheaths composed of iron or steel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/226—Helicoidally wound metal wires or tapes
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- Communication Cables (AREA)
Abstract
The present invention relates to a kind of two-conductor Ground wire with insulation ocver of the anti-lightning strike type on overhead transmission line with optical fiber.Present invention aim to address the strand broking of OPGW, while the purpose being also up to includes saving energy and decreasing loss, reduces secondary arc current, ice-melt snow removing, field power taking.The technical scheme is that：Ground wire is followed successively by fiber unit from inside to outside, layer, composite insulation layer and electroconductive magnetic volume surrounding in electroconductive magnetic body, wherein：Fiber unit is that optical fiber is placed in ferrule；Layer is formed by more zinc-coated wire process in electroconductive magnetic body, and the fiber unit is located in the centre of more zinc-coated wires；Composite insulation layer is by inner insulating layer, main insulating layer and insulating outer layer is laminating forms, and wherein inner insulating layer and insulating outer layer are semi-conductive layer；Electroconductive magnetic volume surrounding is formed by more zinc-coated wire process, is coated on the outside of insulating outer layer.The present invention is applied to high voltage overhead transmission line of alternation current.
Description
Technical field
The present invention relates to the ground wire in power system high-tension overhead line, anti-lightning strike type band on especially a kind of overhead transmission line
The two-conductor Ground wire with insulation ocver of optical fiber.Suitable for high voltage overhead transmission line of alternation current.
Background technology
In the prior art, OPGW Optical fiber composite overhead ground
Wires (OPGW) is the composite overhead ground wire for integrating optical fiber communication function and transmission line of electricity lightning function, belongs to power train
Unite a kind of special special optical cable circuit.With the construction of Fiber-optic Communication In Electric Power System network, OPGW
(OPGW) increasing scale uses.As shown in Figure 1 and Figure 2, basic structure is big for the OPGW structure used at present
Cause identical, optical fiber 1, which is enclosed in ferrule 2, forms fiber unit (being used to communicate), and fiber unit is located in the aluminium in blossom type
In steel clad wire 101 (aluminum-clad steel wire offer mechanical strength), outermost layer is aluminium alloy wire 102 (aluminium alloy wire is easy to conductive).
But because the past causes the understanding deficiency of OPGW (OPGW) stranded influence on thunderbolt, cause mesh
Preceding operating OPGW (OPGW) withstand-lightning capability is low, and OPGW in operation is struck by lightning and occurred stranded
Phenomenon frequently occurs.According to the part high-tension electricity coil holder of International Electrotechnical Commissio IEC-60794-4-1 (1999) optical cable the 4th
Empty optical cable (OPGW), IEEE American Electronics and the Institution of Electrical Engineers, IEEE Std-1138-1994《For utility power circuit
Optical fiber aerial earth wire composite rope (OPGW) experiment and performance use standard》Requirement, in existing fiber composite overhead ground wire
Outer layer metal line gauge use aluminum-clad steel wire and aluminium alloy wire surely, because the fusing point of aluminium is the bottom of compared with, the easy scorification when being struck by lightning
It is disconnected, using the anti-lightning poor-performing of this structure, it is more prone to cause the fusing damage of outer layer aluminium in high thunderstorm area, influences light
The effect of fine composite overhead ground wire, serious threat is constituted to ultra-high-tension power transmission line and power communication.
In fact, since the 1990s, the disconnection problem of composite fiber ground wire has been an international skill
Art problem：Japan occurred 10 times altogether during the decade in 1983~1992 years, about 0.08 times/year of hundred km；Germany has every year
OPGW strands breaks event occurs, typically disconnected 1~2 strand, most multibreak 7 strands；It has been reported that on China's 500kV circuits, have every year
OPGW strands breaks event occurs, and in the March, 2005 from 2000 to, 47 strands breaks occurs altogether on 21 500kV circuits
Event, typically disconnected 1~2 strand, the most multibreak circuit 10 strands, having even has stranded event every year.
According to the retrieval of applicant, the scheme to be improved to some extent at present in the field has：
1st, " a kind of outer wraparound ice-melting optical fiber composite overhead groundwire " of Zhongtian Hitachi Cable Co., Ltd's application, the patent No.：
201320492612.8, it is a kind of outer wraparound ice-melting optical fiber composite overhead groundwire for the design of ice damage prone areas, in ground wire
During icing, galvanization heating ice-melt is carried out using the lenticular wire that insulate, when preventing long caused by the cable shaft tower after cable icing breaks
Between power outage.
2nd, Jiangsu ZhongTian Science Co., Ltd, China Electric Power Research Institute, State Grid Corporation of China, Guo Wang Sichuan Province
" a kind of embedded can optical fiber composite overhead ground wire capable of melting ice " of Utilities Electric Co.'s application, the patent No.：201420251323.3 for ice
The prone areas design of snow disaster evil it is a kind of it is embedded can optical fiber composite overhead ground wire capable of melting ice, be embedded with insulated electric conductor in ground wire, can be with
In ground wire icing, energization ice-melt is carried out to conductor；By embedded insulated electric conductor in various intelligent monitoring equipment, communication
Powered after device far end.
3rd, Guangdong Grid Company Power Dispatching Control Center, China Electric Power Research Institute, Chinese energy construction group are wide
" lightning stroke-resistant optical fibre composite overhead ground wire " of eastern electric power saving design and research institute application, the patent No.：201220570388.5.Resistance to thunderbolt
OPGW is mainly used in the construction of Fiber-optic Communication In Electric Power System network, and the function and optical fiber for having lightning-arrest shunting concurrently are led to
The functions such as news, and there is good anti-lightning performance, high thunderstorm area can be applicable.
Three above patent has improvement compared with traditional OPGW in terms of ice-melt, but due to still
It is in a manner of having continued to use using aluminium Baogang+aluminium alloy as electric conductor, it is after being struck by lightning or frequently stranded, therefore, state so far
The power communication authorities of family's aspect are still without these schemes of large-scale promotion application.
It is applicant's understanding that why above-mentioned existing and improved technical scheme is still without with solving optical fiber composite overhead
The strand broking of line, its basic reason are to use mistake material, that is, have used aluminum-clad steel wire and aluminium alloy.
Through research, lightning current is an aperiodic transient current, is typically to quickly rise to peak value, then more slow
Decline.The wave head of lightning current is steep in the extreme.Due to being usually superimposed with vibration at the starting of lightning current wave and peak value, it is difficult to really
Its fixed true zero point and the time to peaking, therefore, generally use apparent wave head time t1With apparent wavelength time t2To represent thunder
The rise time of electric current and full width at half maximum, are typically designated as t1/t2, as shown in Figure 3.
Pass through the spectrum analysis to lightning current：1) essence of lightning current is a kind of high-frequency impulse, and with frequency
Raise and successively decrease.When wave rear is identical, wavefront is steeper, and higher hamonic wave is abundanter；In the case of wavefront identical, wave rear is more long low
Frequency part is abundanter；2) energy of thunder and lightning is concentrated mainly on low frequency part, and about more than 90% thunder energy is distributed in frequency and is
Below 100kHz, as long as this explanation prevents the lightning current of 100kHz frequencies below from scurrying into, just thunder and lightning stream energy can be cut down 90%
More than.
For high-frequency impulse, nonferromagnetic material either weak ferromagnetism material (aluminum-clad steel wire) has such as been used, by
It is non-magnet material in aluminium, magnetic linkage fracture occurs because of no magnetic conductivity in lightning current high-frequency energy transmission, i.e., can cause
The transmission failure of magnetic energy and then thunder energy is forced to huge heat energy will be produced after light, hot-cast socket, and then aluminum steel is melted
Change.And the International Electrotechnical Commission IEC and American Electronic of existing implementation electrically learn standard gauges of the IEEE in optical power grounded waveguide
In journey design, aluminium Baogang to be used or aluminum alloy materials are exactly defined to outermost requirement, so arrived in lightning current
When, cause magnetic linkage effectively to transmit, melt aluminium lamination on the contrary, cause line-outage contingency.This is to cause failure feelings in recent decades
The continuous basic reason of condition.
The content of the invention
For above-mentioned problem, the technical problem to be solved in the present invention is：According to the characteristic of lightning current and ferromagnetic material
Principle of the material with consumption thunder and lightning field energy, there is provided two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on a kind of overhead transmission line,
Its main purpose is the strand broking for solving OPGW, while the purpose being also up to includes saving energy and decreasing loss, subtracted
Few secondary arc current, ice-melt snow removing, field power taking.
The technical solution adopted in the present invention is：Two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on overhead transmission line, its
It is characterised by, the ground wire is followed successively by fiber unit from inside to outside, layer, composite insulation layer and electroconductive magnetic body in electroconductive magnetic body
Outer layer, wherein：
The fiber unit is that optical fiber is placed in ferrule；
Layer is formed by more zinc-coated wire process in the electroconductive magnetic body, and the fiber unit is located in more galvanized steels
The centre of silk；
The composite insulation layer is by inner insulating layer, main insulating layer and insulating outer layer is laminating forms, wherein inner insulating layer and absolutely
Edge outer layer is semi-conductive layer；
The electroconductive magnetic volume surrounding is formed by more zinc-coated wire process, is coated on the outside of insulating outer layer.
The ferrule is made of magnetic stainless steel, preferably martensitic stain less steel.
The zinc-coated wire uses soft magnetism wire galvanization；Or martensitic stainless steel wire is zinc-plated.
The conductor cross sectional area of layer and electroconductive magnetic volume surrounding is not less than 50mm in the electroconductive magnetic body2。
The semi-conductive layer thickness is 1~3mm, and the raw material of semi-conductive layer is prepared by following weight %：
Graphite 10~20
Iron powder 5~10
Crosslinked polyethylene surplus.
The main insulating layer thickness is 3~25mm, and the raw material of main insulating layer is prepared by following weight %：
MgZn ferrite powder 20~30
Crosslinked polyethylene surplus.
The beneficial effects of the invention are as follows：
1), using the magnetic zinc-plated stainless steel wire of bilayer zone as conductor after, thunder energy ejectment can be entered greatly rapidly
Ground, fundamentally solve the strand broking of OPGW, protect the proper communication of optical fiber.
2), the setting of composite insulation layer cause it is inside and outside form capacity effect between two layers of conductor and insulating barrier, equivalent to
Provide an energy transmission passage to the lightning wave with high frequency characteristics, contribute to ground wire quickly to remove mines, protect ground wire not by
Interrupt.
3), outer contact is hanging because of the presence of insulating barrier, so shuts off the current path between ground wire and the earth,
The electric energy loss on aerial earth wire is eliminated, reaches saving energy and decreasing loss purpose.
4) secondary arc current, is reduced, improves the reliability of power supply.
5), solves the problems, such as power transmission line monitoring device field power taking difficulty, while be available for electric consumption on lighting in operation.
Brief description of the drawings
Fig. 1, Fig. 2 are two kinds of structure charts of background of invention OPGW respectively.
Fig. 3 is the waveform diagram of lightning current.
Fig. 4 is the sectional view of OPGW of the present invention.
Fig. 5 is the three-dimensional exploded view of OPGW of the present invention.
Embodiment
As shown in Figure 4, Figure 5, on the present embodiment overhead transmission line two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber section
It is rounded, wrap up layer by layer from inside to outside, be followed successively by fiber unit, layer 3, composite insulation layer 4 and electroconductive magnetic in electroconductive magnetic body
Volume surrounding 5.
The fiber unit is that optical fiber 1 (one or more) is placed in ferrule 2, and ferrule 2 is using magnetic
Stainless steel is made, such as martensitic stain less steel.
Layer 3 is formed (by wire twisting machine process) by more zinc-coated wire process in the electroconductive magnetic body, the fiber unit
It is located among more zinc-coated wires.Zinc-coated wire is zinc-plated using soft magnetism steel wire (or martensitic stainless steel wire).Electroconductive magnetic
The conductor cross sectional area of internal layer 3 is no less than 50mm2。
The composite insulation layer 4 is by inner insulating layer 4-1, main insulating layer 4-2 and insulating outer layer 4-3 is laminating forms.
Inner insulating layer 4-1 and insulating outer layer 4-3 is semi-conductive layer, and the thickness of two layers of semi-conductive layer is 1~3mm,
Semi-conductive layer is matched somebody with somebody by 10~20% (weight) graphite of addition and 5~10% (weight) iron powders in major ingredient crosslinked polyethylene (weight %)
System forms, and it is to obtain electric conductivity that graphite and iron powder are added in semi-conductive layer.The effect of two layers of semi-conductive layer is to make absolutely
The conductive layer that edge layer contacts with it is in equipotential, so as to avoid because conductive line surfaces are rough and caused by shelf depreciation show
As, it is ensured that cable long-term safety is run.
Main insulating layer 4-2 thickness is 3~25mm, main insulating layer by addition 20 in major ingredient crosslinked polyethylene (weight %)~
30% (weight) MgZn ferrite powder is formulated, and it is to improve the magnetic conductivity of insulating barrier to add MgZn ferrite powder
Energy.
This example electroconductive magnetic volume surrounding 5 is equally formed (by tube-type line strander process) by more zinc-coated wire process, the number of plies
Two layers, it is coated on insulating outer layer 4-3 outside.Zinc-coated wire uses soft magnetism wire galvanization, or martensitic stainless steel wire plating
Zinc.The conductor cross sectional area of electroconductive magnetic volume surrounding 5 is no less than 50mm2。
Ground wire after the present invention improves has following unprecedented advantage：
1), ferromagnetic material consumption thunder energy calculates
The use of ferromagnetic material is to be based on U.S. electric scholar Shi Danmei intelligence (Charles Proteus in this ground wire
Steinmetz 1865-1923) ferromagnetic material magnetizing power (loss) model formation for being proposed before more than 100 years：
In formula, the factors such as K-consideration ironworking, magnetic flux distribution are uneven make the ferromagnetic increased correction factor of loss；
P1/50- frequency is 50Hz, the maximal magnetization capacity (loss) (W/kg) of ferromagnetic material when magnetic flux density is 1T (tesla), please
It is shown in Table 1；B-ferromagnetic flux density (T)；F-magnetic flux alternative frequency (Hz)；GFeThe quality (kg) of-ferromagnetic material.
Maximal magnetization capacity (loss) value of the mild steel cold rolling lamination steel of table 1
The parameter of table 1 comes from《Ferromagnetic material magnetic ordered material Feature Description》, EP.Wohlfarth chief editors.
K=0.8 is taken, when ferromagnetic material thickness is δ=2.1mm, corresponding specific loss P1/50=36W/kg, it is assumed that thunder and lightning
Average frequency f=1000Hz, B=1T (tesla) of pulse,
Referring back to table 2, the statistics energy value of lightning current (Nanjing Information engineering Univ Xiao Wenan teaches teaching material)：
The lightning current parameter of the positive polarity thunderbolt first of table 2
Assuming that thunder energy A=10MJ (megajoule), intends with magnetic field energy PFeCarry out containing thunder and lightning field energy relationship, then it is necessary
Meet PFe>=A conditions, A≤PFe=10 × 106=1411.2GFe, draw ferromagnetic weight GFe≥7086kg.This energy replacement theory
Be built upon by the energy transfer rate of electromagnetism field system be equal with the light velocity be 3 × 108M/s, therefore it can pass through
Ferromagnetic material is promptly absorbed the electric field energy of lightening pulse in a manner of magnetic to be lost with receiving.
From the modelling of energy absorption equity, it is desirable to the magnetization volume P that ferromagnetic material is possessedFeThat is magnetic energy product work(
The capability value A of rate >=power of electric field energy caused by thunder and lightning lotus, the electric field energy of thunder and lightning can be absorbed if reaching this requirement
It is transformed among ferromagnetic material, therefore, according to formula：To ferromagnetic weight in overhead transmission line
It is that the strength grade for counting thunderbolt on corresponding overhead line by lightning current has a minimum weight demands to measure G, if with thunder and lightning
Intensity is 10MJ, then the minimum weight G=7086kg of the lightning region ferromagnetic material.If with steel strand wires model LG-70mm2For
Example, unit weight 570kg/km, the minimum 7086kg/570=12.4km of ground wire continuous length, i.e. 12.4km galvanized steel
Silk thread can dissolve the energy of this thunder and lightning.P is often taken in Practical ProjectFe>=1.62A, (experience safety factor is
1.62)。
2), capacity effect rapid drainage lightning current
Ground wire of the present invention adds a composite insulation layer 4 between two layers of electroconductive magnetic body, so physically
A capacitor layers are formed, according to the theoretical calculation of plate condenser, capacitanceε is that the dielectric of air is normal
Number, εrFor the dielectric constant of medium, S is area, and d is the distance between conductor, is the thickness δ of insulating barrier in this programme, i.e.,
The conductor spacing d=δ of capacitor, are so generally generally 6~20mm by the pressure-resistant designs of 30~100kV, insulating barrier of insulating barrier
Thickness, if by the capacitance of this structure lower wire, generally every kilometer of capacitance for 0.2 μ F (microfarad) left and right, if the company of wire
When continuous length is 10~20 kilometers, capacitance can reach 4~5 μ F electric capacity.In the case where transmission line of electricity is very long, then capacitance
Corresponding increase, because lightning current is a kind of high-frequency impulse wave, it is easy to by capacitive electrical equipment, such structure
Ground wire equivalent to the passage that an energy transmission is provided to the lightning wave with high frequency characteristics.
If capacitance C is up to 0.2 μ F per kilometers length, if ground line length is 50km, capacitance up to 10 μ F,
And the capacitive reactance that thus capacitance is formedWhen lightning current frequency f is 10kHZWhen, the capacitive impedance of ground wire presentation
ForThis resistance is the equal of a good electricity
Gas path, you can quickly drained lightning current in greatly with the passage that is formed from this capacitor.But the ground wire cable
To 50HZCapacitive reactance is then presented in power-frequency voltage Impedance ratio increases when being struck by lightning
About 300 times, close to high impedance, equivalent to open-circuit condition.
If arrester is connected with electroconductive magnetic volume surrounding 5 in actual installation engineering, it is possible to effectively utilize ground connection
Cable reaches the effect of lightning protection, while electroconductive magnetic volume surrounding 5 again can be made to reach hanging purpose in usually operation.
3), wastage reducing and energy saving
In the prior art, band optical ground wire is grounded using by tower, therefore has very big induced-current, its result
The energy loss of circuit is increased, this additional energy loss is that the quadratic sum line length of same load current is proportional
, 200~300km power transmission sequence is grown for 500kV, the about millions of degree of electric flux is about lost every year, causes sizable
Economic loss.The present invention by bilayer conductive magnetic plus middle composite insulation layer, by the use of electroconductive magnetic volume surrounding 5 as
Inductive layer, because the presence of composite insulation layer 4 make it that electroconductive magnetic volume surrounding 5 is hanging over the ground, so shut off ground wire with it is big
Current path between ground, eliminate the electric energy loss on aerial earth wire.Under normal circumstances, the electromagnetically volume surrounding 5 of ground wire with
The earth shaft tower insulate, and avoids faradic generation.When lightning surge generation or line fault, ground wire is except by
The discharging gap electric discharge of the ground insulator of installing is outer, while can also pass through the electric capacity hf channel designed by the present invention and the earth
Connect, drain lightning current automatically, ensure that lightning current and the effective of event gap power current release.
4), ice-melt removes the snow
Because the ground wire of transmission line of electricity is erected on the tower top of line steel tower, it is easier to icing situation is formed, once icing
Thickness exceedes design limit value, it will cause overhead line structures to be toppled over, thread breakage, short circuit grounding is formed between wire, ground wire, it is whole
Bar line interruption is powered, and this will cause high risks to the safe operation of power network.Be to the de-icing method of aerial earth wire at present by
Ice-melt area ground wire all insulate over the ground, the method for dc source is added on ground wire, but this method workload is big, performance difficulty, removes
Ice DeGrain, for the ground wire with optical fiber, the DC current of loading can also be raised excessive and damaged because of temperature
Optical fiber.
The present invention is due to there is provided composite insulation layer 4, enabling the insulation suspension of electroconductive magnetic volume surrounding 5, being passed to when to it
Wire heats up because of energization during DC current, reaches the purpose of ice-melt snow removing；At the same time, due to the presence of insulating barrier, carry
The layer of optical fiber is too high without heating up, and protects the safety of optical fiber.
5) secondary arc current, is reduced
After the composite insulation layer 4 of the present invention makes electroconductive magnetic volume surrounding 5 vacantly insulate over the ground, it is possible to reduce secondary arc current,
Accelerate the extinguishing of latent power supply arc, improve the success rate of single-pole reclosing, improve electric network reliability.
6) field power taking demand, is met
In overhead transmission line running status on-line monitoring system, generally use solar energy adds the power supply mode of battery, but
Show through trial operation in a few years, illumination is insufficient, in the case of continuous rainy weather, can not meet equipment by storage battery power supply
Power supply reliability requirement, and the life of storage battery is limited, just needs to change within 1 year or so so that the operation maintenance of on-line monitoring system
It can not be protected.The present invention will can produce induced voltage after outer contact 5 vacantly insulation with adjacent electrification in high voltage phase conductor,
For 500kV circuits, induced voltage is up to 3~5kV (segmented), by that can obtain sensing in 5 transformer installed above of outer layer
Electric energy is used to illuminate and monitoring instrument.
Claims (7)
- A kind of 1. two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on overhead transmission line, it is characterised in that：The ground wire by interior and It is outer be followed successively by fiber unit, layer (3), composite insulation layer (4) and electroconductive magnetic volume surrounding (5) in electroconductive magnetic body, wherein：The fiber unit is that optical fiber (1) is placed in ferrule (2)；Layer (3) is formed by more zinc-coated wire process in the electroconductive magnetic body, and the fiber unit is located in more galvanized steels The centre of silk；The composite insulation layer (4) is combined by inner insulating layer (4-1), main insulating layer (4-2) and insulating outer layer (4-3), Wherein inner insulating layer (4-1) and insulating outer layer (4-3) are semi-conductive layer；The electroconductive magnetic volume surrounding (5) is formed by more zinc-coated wire process, is coated on insulating outer layer (4-3) outside.
- 2. two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on overhead transmission line according to claim 1, it is characterised in that： The ferrule (2) is made of magnetic martensitic stain less steel.
- 3. two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on overhead transmission line according to claim 1, it is characterised in that： The zinc-coated wire uses soft magnetism wire galvanization.
- 4. two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on overhead transmission line according to claim 1, it is characterised in that： The zinc-coated wire is that martensitic stainless steel wire is zinc-plated.
- 5. two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber, its feature exist on the overhead transmission line according to claim 3 or 4 In：The conductor cross sectional area of layer (3) and electroconductive magnetic volume surrounding (5) is not less than 50mm in the electroconductive magnetic body2。
- 6. two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on overhead transmission line according to claim 1, it is characterised in that： The semi-conductive layer thickness is 1~3mm, and the raw material of semi-conductive layer is prepared by following weight %：Graphite 10~20Iron powder 5~10Crosslinked polyethylene surplus.
- 7. two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on overhead transmission line according to claim 1, it is characterised in that： Main insulating layer (4-2) thickness is 3~25mm, and the raw material of main insulating layer is prepared by following weight %：MgZn ferrite powder 20~30Crosslinked polyethylene surplus.
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| CN201611035612.XA CN106653169B (en) | 2016-11-22 | 2016-11-22 | Two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on a kind of overhead transmission line |
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| CN103426549A (en) * | 2012-05-20 | 2013-12-04 | 河南科信电缆有限公司 | Low-sag thunderstroke-resisting optical fiber composite overhead ground wire |
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| CN204375438U (en) * | 2015-02-11 | 2015-06-03 | 苏州古河电力光缆有限公司 | The resistance to thunderbolt Optical Fiber composite overhead Ground Wire of corrosion-resistant type |
| KR101547914B1 (en) * | 2013-04-03 | 2015-08-27 | 대한광통신 주식회사 | Gel free Optical Ground Wire |
| CN206322487U (en) * | 2016-11-22 | 2017-07-11 | 张兴莲 | Two-conductor Ground wire with insulation ocver of the anti-lightning strike type with optical fiber on a kind of overhead transmission line |
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2016
- 2016-11-22 CN CN201611035612.XA patent/CN106653169B/en active Active
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|---|---|---|---|---|
| CN103426549A (en) * | 2012-05-20 | 2013-12-04 | 河南科信电缆有限公司 | Low-sag thunderstroke-resisting optical fiber composite overhead ground wire |
| KR101547914B1 (en) * | 2013-04-03 | 2015-08-27 | 대한광통신 주식회사 | Gel free Optical Ground Wire |
| CN104575858A (en) * | 2015-01-14 | 2015-04-29 | 中天日立光缆有限公司 | OPGW with remote power feed function |
| CN204375438U (en) * | 2015-02-11 | 2015-06-03 | 苏州古河电力光缆有限公司 | The resistance to thunderbolt Optical Fiber composite overhead Ground Wire of corrosion-resistant type |
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Effective date of registration: 20240117 Address after: Room 569, No. 2, Lane 558 Minta Road, Shihudang Town, Songjiang District, Shanghai, 201600 Patentee after: Shanghai sentry Electronic Technology Co.,Ltd. Address before: 310012 block F, Huaxing modern industrial park, No. 18, gudangtang Miao Road, Hangzhou, Zhejiang Patentee before: Zhang Xinglian Patentee before: Zhang Jinglun |