CN108868286A - A kind of four circuit complex pole tower of 500kV/220kV mixed pressure - Google Patents
A kind of four circuit complex pole tower of 500kV/220kV mixed pressure Download PDFInfo
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- CN108868286A CN108868286A CN201811037490.7A CN201811037490A CN108868286A CN 108868286 A CN108868286 A CN 108868286A CN 201811037490 A CN201811037490 A CN 201811037490A CN 108868286 A CN108868286 A CN 108868286A
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- 238000009413 insulation Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 239000012212 insulator Substances 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 239000000805 composite resin Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 230000003447 ipsilateral effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 239000000725 suspension Substances 0.000 abstract description 8
- 150000001875 compounds Chemical class 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 239000011780 sodium chloride Substances 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
- E04H12/10—Truss-like structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Insulators (AREA)
Abstract
The invention discloses a kind of four circuit complex pole towers of 500kV/220kV mixed pressure, including tower body, cross-arm on 500kV is successively arranged on tower body from top to bottom, cross-arm under the upper cross-arm of cross-arm, 220kV and 220kV under cross-arm, 500kV in 500kV, the cross-arm is composite insulation cross arm；Cross-arm on the 500kV, the conveying voltage of cross-arm is twice 500kV under cross-arm, 500kV in 500kV, and the conveying voltage of cross-arm is twice 220kV under the upper cross-arm of 220kV and 220kV.The insulation characterisitic of composite insulation cross arm, eliminates suspension insulator, and under identical service condition, exhaling for composite insulation cross arm shaft tower is high than the significant decrease of traditional steel tower, and width of corridor has also obtained the reduction of amplitude peak；Composite insulation cross arm can reduce transmission tower icing degree, reduce the accident risk of falling tower, improve security performance；Four circuit transmission capacity of mixed pressure is big and saves land occupation, and applicable range is wide.
Description
Technical field
The invention belongs to transmission tower fields, and in particular to a kind of four circuit complex pole tower of 500kV/220kV mixed pressure.
Background technique
With the development of power grid construction, strong intelligence sending end power grid construction enters comprehensive Rapid development stage, ability to transmit electricity
It is substantially improved.Since current existing shaft tower mostly uses greatly all-steel structure, but steel there are quality weight, easy-to-rust or cracking,
The mechanical deficiencies such as poor performance at low temperatures, there is also line corridors in particular circumstances, and wide, construction transport and operation and maintenance difficulty etc. are asked
Topic；Steel tower is in great demand to steel, not only consumes a large amount of mineral resources, and in the production and process of steel
In cause the serious pollution of ecological environment.In terms of electric property, the power transmission line Louis generation pollution flashover of full steel structure,
Failures and the accidents such as windage yaw electric discharge.Therefore, it is either required from security reliability or economic and social benefits angle
New material and new technology can be imported on power transmission tower innovatively to solve the above problems.
Summary of the invention
The present invention provides a kind of four circuit complex pole towers of 500kV/220kV mixed pressure, have reached reduction width of corridor, have reduced
Shaft tower exhales high, security performance height and beneficial effect applied widely.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that：A kind of 500kV/220kV mixed pressure four is returned
Road complex pole tower, it is characterised in that：Be successively arranged from top to bottom including tower body, on tower body cross-arm on 500kV, cross-arm in 500kV,
Cross-arm under the upper cross-arm of cross-arm, 220kV and 220kV under 500kV, the cross-arm is composite insulation cross arm；It is horizontal on the 500kV
Load, the conveying voltage of cross-arm is twice 500kV under cross-arm, 500kV in 500kV, cross-arm under the upper cross-arm of 220kV and 220kV
Conveying voltage is twice 220kV.
Optimally, the composite insulation cross arm is using made of borosilicate fiberglass reinforced resin based composites
Composite insulation cross arm, play it is corrosion-resistant, antifatigue, can be in the effect on probation of the special regions such as dust storm, saline and alkaline, acid rain.
Optimally, the composite insulation cross arm include the pull rod being connect respectively with tower body two sides, respectively with tower body two sides connect
The compression bar connect, the ipsilateral compression bar of tower body are connect with pull rod, are played the resistance to thunder for improving shaft tower, lightning protection level, are improved insulator crossarm
Resistant self-cleaning ability effect.
Optimally, the pull rod section is solid circles, and the compression bar section is hollow circle.
Optimally, the pull rod and compression bar are all made of steel node and connect with tower body.
Optimally, cross-arm on the 500kV, be arranged vertically between cross-arm under cross-arm, 500kV in 500kV；The 220kV
Cross-arm is arranged using up-side down triangle under upper cross-arm and 220kV.
Optimally, cross-arm on the 500kV, the lower plane of cross-arm is adopted under cross-arm and 220kV under cross-arm, 500kV in 500kV
With the formula of raising up；The lower plane of cross-arm uses horizontal on the 220kV.
Optimally, the tower body is steel construction tower body, and tower body main material and auxiliary material are steel pipe.
The beneficial effects obtained by the present invention are as follows：The insulation characterisitic of composite insulation cross arm, eliminates suspension insulator, in phase
Under same service condition, exhaling for composite insulation cross arm shaft tower is high than the significant decrease of traditional steel tower, and width of corridor has also obtained maximum
The reduction of amplitude；Composite insulation cross arm can reduce transmission tower icing degree, reduce the accident risk of falling tower, improve safety
Energy；Four circuit transmission capacity of mixed pressure is big and saves land occupation, and applicable range is wide.
Detailed description of the invention
Fig. 1 is schematic diagram of the invention；
Fig. 2 is the structure chart of composite insulation cross arm of the present invention；
In figure：1- tower body；The upper cross-arm of 2-500kV；Cross-arm in 3-500kV；Cross-arm under 4-500kV；The upper cross-arm of 5-220kV；
Cross-arm under 6-220kV；7- composite insulation cross arm；8- pull rod；9- compression bar.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, a kind of four circuit complex pole tower of 500kV/220kV mixed pressure, including steel construction tower body, tower body main material and
Auxiliary material is steel pipe.Cross-arm 2 on the 500kV of vertical arrangement, cross-arm 3,500kV in 500kV are successively arranged on tower body from top to bottom
Cross-arm 6, the arrangement of up-side down triangle can reduce tower head height under cross-arm 5,220kV on the 220kV that lower cross-arm 4 and up-side down triangle are arranged
Degree.In the upper cross-arm 2 of 500kV, 500kV under cross-arm 3,500kV under cross-arm 4 and 220kV the lower plane of cross-arm 6 using the formula that raises up,
The lower plane of the upper cross-arm 5 of 220kV uses horizontal.It is twice 500kV and twice 220kV, the upper cross-arm of 500kV that shaft tower, which conveys voltage,
2, the conveying voltage of cross-arm 4 is twice 500kV under cross-arm 3,500kV in 500kV, cross-arm 6 under the upper cross-arm 5 of 220kV and 220kV
Conveying voltage be twice 220kV.The compound cross-arm tower transmission capacity in four circuit of 500kV/220kV mixed pressure is big, saves land occupation, can
It is widely applied in the area of corridor anxiety.
All cross-arms are using composite insulation cross arm made of borosilicate fiberglass reinforced resin based composites
7.Making full use of for 7 insulation characterisitic of composite insulation cross arm, eliminates suspension insulator, compound under identical service condition
Exhaling for insulator crossarm shaft tower is high than the significant decrease of traditional steel tower, and width of corridor has also obtained the reduction of amplitude peak.Such as Fig. 2 institute
Show, composite insulation cross arm 7 includes a pair of of pull rod 8 and a pair of of compression bar 9, and steel node is respectively adopted in a pair of of pull rod 8 and 1 two sides of tower body connect
It connects, a pair of of compression bar 9 is also respectively adopted steel node and connect with 1 two sides of tower body, and the ipsilateral compression bar 9 of tower body 1 is connect with pull rod 8.It is compound
The inclination arrangement form of insulator crossarm 7 not only improves the resistance to thunder of shaft tower, lightning protection level, also improves the self-cleaning energy of resistant of insulator crossarm
Power.The section of pull rod 8 is solid circles, and the section of compression bar 9 is hollow circle.
Specific embodiment：
(1) design method
1) insulation configuration
According to gradation for surface pollution, according to《High aititude external insulating level technical specification》, determine that compound cross-arm insulating part minimum is long
Degree.
2) hardware string is long
According to broken string unbalanced tensile force and uneven ice unbalanced tensile force, the most short string length of fitting is determined.
3) Clearance joints are drawn
Upper, middle and lower phase suspension string is calculated under the operating conditions such as maximum wind velocity, switching overvoltage, lightning surge, livewire work
Angle of wind deflection, draw gap circle diagram.
4) tower head is arranged
According to Clearance joints, while considering horizontal spacing phase spacing vertical with same circuit, determines tower head size.Simultaneously
After the windage yaw for considering suspension string, thread gripping-board cannot collide with main material under cross-arm, determine the cross-arm lower plane elevation angle.
5) tower structure calculates
According to tower head size and pole and tower design condition, structural analysis is carried out to shaft tower, and draw shaft tower construction drawing.
(2) computational example
Referring to the modular design of Jiangsu Province, the compound cross-arm pendency tower 500kV conducting wire in four circuit of 500kV/220kV mixed pressure is adopted
It is twisted with 4 × JL/G1A-630/45 steel-core-aluminium, 220kV conducting wire uses 2 × JL/G1A-630/45 steel-cored aluminium strand, and ground wire uses aluminium
Cladding stranded wire JLB20A-150.Insulation Coordination design is carried out by 3.2cm/kV (calculating by grade of rated voltage).Horizontal span
500m, vertical span 650m, Kv value take 0.75, and high 36m is exhaled in calculating.Design wind speed 29m/s designs icing 5mm.
1) insulation configuration
For Jiangsu gradation for surface pollution, according to《High aititude external insulating level technical specification》It is d2 grades according to gradation for surface pollution to examine
Consider, determine the compound cross-arm nominal creepage distance of 500kV not less than 16500mm, minimum arcing distance is not less than 4250mm, considers suitable
When nargin, cross-arm insulating part minimum length be 4400mm.Determine that the compound cross-arm nominal creepage distance of 220kV is not less than
7560mm, minimum arcing distance are not less than 2100mm, consider that nargin appropriate, cross-arm insulating part minimum length are 2300mm.
2) hardware string is long
According to《110~750kV overhead transmission line design specification》Regulation, 10mm and following ice formation 4 divide 500kV pendency
The value of minimum broken string tension (tension containing longitudinal unbalance) of tower conducting wire is that flat mound landform is not more than conducting wire maximum working tension
The uneven icing situation 4 of 20%, 10mm and following ice formation to divide the value of the unbalanced tensile force of 500kV pendency tower conducting wire be not
Greater than the 10% of conducting wire maximum working tension.The most short a length of 0.8m of string of 500kV hardware string is determined according to the longitudinal unbalance tension,
Consider nargin appropriate, this tower recommends 500kV suspension string length to take 1.2m.
Minimum broken string tension (tension containing longitudinal unbalance) of the double division 220kV pendency tower conducting wires of 10mm and following ice formation
Value is that flat mound landform is not more than the 25% of conducting wire maximum working tension.The double divisions of the uneven icing situation of 10mm and following ice formation
The value of the unbalanced tensile force of 220kV pendency tower conducting wire is no more than the 10% of conducting wire maximum working tension.It is longitudinal not according to this
Balance tension determines the most short a length of 0.5m of string of 220kV hardware string, comprehensively considers nargin appropriate, this tower recommends 220kV suspension string
Length takes 1m.
3) Clearance joints are drawn
1 the air gap numerical tabular of table
According to the air gap under operating conditions different in table 1, determine upper, middle and lower phase suspension string in maximum wind velocity, operated electricity
Angle of wind deflection under the operating conditions such as pressure, lightning surge, livewire work draws gap circle diagram.
4) tower head is arranged
The tower head of compound cross-arm tangent tower is arranged, must meet the air gap, composite material minimum insulation length, thread gripping-board not
It can collide etc. and to require with post insulator substring.
Control of the cross-arm length of the upper cross-arm of 500kV by insulation distance, insulating part length are 4400mm, and even tower fitting is long
Degree is 1200mm, end metal fitting 900mm.Consider nargin appropriate, the upper cross-arm of 500kV is 7400mm.
Control of the cross-arm length of cross-arm by insulation distance under 500kV, insulating part length are 4400mm, and even tower fitting is long
Degree is 1200mm, end metal fitting 900mm.Consider that nargin appropriate, the upper cross-arm length of 500kV are 7800mm.
Control of the cross-arm length of cross-arm by insulation distance in 500kV, and according to《110~750kV overhead transmission line
Design specification》Regulation, the displacement between 500kV upper and lower level adjacent wires or grounded-line cannot be less than 1750mm, insulating part length
For 6370mm, even tower fitting length is 1200mm, end metal fitting 900mm.Consider nargin appropriate, cross-arm length in 500kV
For 9550mm.
Control of the cross-arm length of the upper cross-arm of 220kV by insulation distance, first segment insulating part length be 2300mm, second
Section insulating part length is 4280mm, and even tower fitting length is 800mm, and the connection gold utensil length between two sections of insulating parts is 600mm,
End metal fitting is 600mm.Consider that nargin appropriate, the upper cross-arm length of 220kV are 10600mm.
Control of the cross-arm length of cross-arm by insulation distance under 220kV, and according to《110~750kV overhead transmission line
Design specification》Regulation, the displacement between 220kV upper and lower level adjacent wires or grounded-line cannot be less than 1000mm, insulating part length
For 3400mm, even tower fitting length is 800mm, end metal fitting 600mm.Consider nargin appropriate, cross-arm length is under 220kV
6600mm。
According to《110~750kV overhead transmission line design specification》Regulation, 500kV vertical separation are not less than 10m,
220kV vertical separation is not less than 5.5m.Vertical range between 500kV and 220kV difference phase conductor is not less than 10.5m.This
Tower presses minimum dimension design.
5) tower structure calculates
Mechanics Calculation is carried out to shaft tower using Structure Design Software, recommendation 500kV cross-arm pull rod specification is Φ 45, compression bar rule
Lattice are Φ 320 × 10；220kV cross-arm pull rod specification is Φ 35, and compression bar specification is Φ 280 × 8.
6) economic analysis
2 complex pole tower of table and steel tower Ji property contrast table
From table 2 it can be seen that compound four circuit tangent tower of cross-arm mixed pressure and traditional angle steel tower have certain economic advantages, and
The compound four compressible width of corridor of circuit tangent tower of cross-arm mixed pressure reduces land occupation, has good social effect, is suitble in city
It is widely applied.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of four circuit complex pole tower of 500kV/220kV mixed pressure, it is characterised in that：Including tower body, on tower body from top to bottom according to
It is secondary to be equipped with that cross-arm on 500kV, cross-arm, the cross-arm are equal under cross-arm, the upper cross-arm of 220kV and 220kV under cross-arm, 500kV in 500kV
For composite insulation cross arm；Cross-arm on the 500kV, the conveying voltage of cross-arm is twice under cross-arm, 500kV in 500kV
The conveying voltage of cross-arm is twice 220kV under the upper cross-arm of 500kV, 220kV and 220kV.
2. four circuit complex pole tower of a kind of 500kV/220kV mixed pressure according to claim 1, it is characterised in that：It is described multiple
Closing insulator crossarm is using composite insulation cross arm made of borosilicate fiberglass reinforced resin based composites.
3. four circuit complex pole tower of a kind of 500kV/220kV mixed pressure according to claim 1, it is characterised in that：It is described multiple
Close the compression bar that insulator crossarm includes the pull rod connecting respectively with tower body two sides, connect respectively with tower body two sides, the ipsilateral pressure of tower body
Bar is connect with pull rod.
4. four circuit complex pole tower of a kind of 500kV/220kV mixed pressure according to claim 3, it is characterised in that：The drawing
Bar section is solid circles, and the compression bar section is hollow circle.
5. four circuit complex pole tower of a kind of 500kV/220kV mixed pressure according to claim 3, it is characterised in that：The drawing
Bar and compression bar are all made of steel node and connect with tower body.
6. four circuit complex pole tower of a kind of 500kV/220kV mixed pressure according to claim 1, it is characterised in that：It is described
It is arranged vertically between cross-arm under cross-arm, 500kV in the upper cross-arm of 500kV, 500kV；Cross-arm under cross-arm and 220kV on the 220kV
It is arranged using up-side down triangle.
7. four circuit complex pole tower of a kind of 500kV/220kV mixed pressure according to claim 1, it is characterised in that：It is described
In the upper cross-arm of 500kV, 500kV under cross-arm, 500kV under cross-arm and 220kV the lower plane of cross-arm using the formula that raises up；The 220kV
The lower plane of upper cross-arm uses horizontal.
8. four circuit complex pole tower of a kind of 500kV/220kV mixed pressure according to claim 1, it is characterised in that：The tower
As steel construction tower body, tower body main material and auxiliary material are steel pipe.
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| CN201811037490.7A CN108868286A (en) | 2018-09-06 | 2018-09-06 | A kind of four circuit complex pole tower of 500kV/220kV mixed pressure |
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2018
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| 孙鹏;白禹;程克娜;: "复合横担杆塔设计分析", 河北电力技术, no. 01 * |
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| 李志军;陈维江;张彤;戴敏;姜文东;王灿灿;刘宗喜;: "110kV双回线路格构式复合材料杆塔电气结构设计", 电网技术, no. 02 * |
| 王亮;朱勇;郁杰;: "220kV复合横担新型塔均压环电场分析", 智能电网, no. 01, 10 January 2016 (2016-01-10) * |
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