CN103835567A - Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line - Google Patents
Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line Download PDFInfo
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- CN103835567A CN103835567A CN201310641883.XA CN201310641883A CN103835567A CN 103835567 A CN103835567 A CN 103835567A CN 201310641883 A CN201310641883 A CN 201310641883A CN 103835567 A CN103835567 A CN 103835567A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 238000004804 winding Methods 0.000 title abstract 7
- 230000009191 jumping Effects 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The embodiment of the invention provides an upward-winding tension-resistant tower on an extra-high-voltage direct-current transmission line. The upward-winding tension-resistant tower comprises a tower body, tower legs, a ground wire support and a guide wire cross arm, wherein an upward-winding wire jumper support is arranged on the outer side of the ground wire support, and the lower plane of the upward-winding wire jumper support is perpendicular to the central axis of the ground wire support; above the guide wire cross arm, an upward-winding wire jumper guides the current to an advancing side strain clamp from a retreating side strain clamp. According to the upward-winding tension-resistant tower on the extra-high-voltage direct-current transmission line, it is avoided that because the distance from the wire jumper to the ground is not enough, the rooting problem is caused or because the distance between trees on a high slope is not enough, the trees should be cut. Besides, for the tension-resistant tower located on a steep slope, the edge phase wire jumper is wound upwards to be arranged, on the one hand, influences on the environment are reduced, on the other hand, the perpendicular distance from a cross arm on the lowermost layer of the tower to the ground is effectively reduced, the consumption of tower material of the iron tower is reduced, and finally the purposes that comprehensive investment of the line is saved, the tower is convenient to construct and running reliability of the line is improved are achieved.
Description
Technical field
The present invention relates to high voltage power transmission field, relate in particular on a kind of UHVDC Transmission Lines around formula anchor support.
Background technology
At present, domestic ± 800kV direct current single loop anchor support mainly adopts dry font steel tower, continue by hanging over wire jumper scheme under wire cross-arm (under draw wire jumper) in the two poles of the earth, this type of anchor support existing ripe design experiences in ± 800 DC power transmission lines.
Under ± 800kV UHVDC Transmission Lines, draw wire jumper owing to being subject to the impact at jumper string length, wire jumper sag, strain insulator-string angle of slope etc., its live part minimum point is than the low about 11m of tension tower conducting wire cross-arm, thereby may cause because wire jumper distance to the ground is not to ground evolution or rising anchor support, especially in mountain area, anchor support stands in compared with on gradient slope, there will be a Ji compare Ta Wei center ground elevation to uprise, and live part (wire jumper) step-down, the contradiction of wire jumper clearance to ground is more outstanding.
Mountain area transmission line of electricity, while occurring that one pole wire jumper becomes the governing factor of anchor support tower height, when distance to the ground is not or leap forest is inadequate to high slope trees distance, generally take following measure:
1) increasing steel tower exhales title high;
2) wire jumper evolution or because high slope trees distances is caused to forest felling not;
3) relocate or dodge the mode of displacement in part, tower position.
But the shortcoming that existing these technology exist is:
1) increased steel tower and exhaled title height, this will increase tower material consumption undoubtedly, increase body investment;
2) wire jumper evolution or forest felling, do not meet the requirement of Environmental Design;
3) relocate or dodge the mode of displacement in part, easily cause change expense significantly to increase, even under mountain area power transmission line corridor overall situation more and more in short supply, iron tower foundation is inevitably positioned at precipitous landform or crosses over forest zone, adopts the mode of similar avoidance can not positively solve this engineering roadblock.
Summary of the invention
The embodiment of the present invention provides on a kind of UHVDC Transmission Lines around formula anchor support, to solve the environmental requirement that do not meet of the prior art, and the large shortcoming of cost.
In order to achieve the above object, the embodiment of the present invention provides on a kind of UHVDC Transmission Lines around formula anchor support, comprise tower body, tower leg, earth wire support and wire cross-arm, it is characterized in that, around wire jumper support, described upper vertical around the lower plane of wire jumper support and the axis of described earth wire support in described earth wire support outside layout one; By described upper around wire jumper support, upper around wire jumper, retreating side strain clamp is drained to advance side strain clamp above from described wire cross-arm certainly.
Further, in one embodiment, the spacing of the ground wire hanging point on wire jumper hanging point and the described earth wire support of described wire jumper support is 3m-4m.
Further, in one embodiment, described upper on wire jumper support average mark be furnished with three place's wire jumper hanging points.
Further, in one embodiment, described upper around soft the jumping onto around mode of wire jumper support employing suspension 3I string.
Further, in one embodiment, described is above 5m-7m around the one-sided length of wire jumper support.
Further, in one embodiment, the height of exhaling of described anchor support is 39m-48m.
On the UHVDC Transmission Lines wire jumper of the embodiment of the present invention around formula anchor support, by a utmost point of high slope side from the above drainage of limit wire cross-arm, make high slope upside one utmost point wire jumper not become the governing factor of anchor support tower height, thereby avoid producing not evolution problem or because high slope trees distance being chopped at a tree not because of wire jumper distance to the ground.And, for the anchor support being positioned at compared with steep side slope, limit phase wire jumper adopts upper around arrangement, reduce on the one hand the impact on environment, effectively lower on the other hand shaft tower and exhale height, reduce tower material of iron tower consumption, finally reach and save the circuit comprehensive method of investment, convenient construction, the object of raising circuit operational reliability.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation around formula anchor support on the UHVDC Transmission Lines of the embodiment of the present invention;
Fig. 2 is the structural representation around formula anchor support on the UHVDC Transmission Lines of the present invention's one specific embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation around formula anchor support on the UHVDC Transmission Lines of the embodiment of the present invention.As shown in Figure 1, on the UHVDC Transmission Lines of the present embodiment, comprise tower body 1, tower leg 2, earth wire support 3 and wire cross-arm 4 around formula anchor support, around wire jumper support 5, described upper vertical with the axis of described earth wire support 3 around the lower plane of wire jumper support 5 in described earth wire support outside layout one; By described upper around wire jumper support 5, upper around wire jumper, retreating side strain clamp more than 4 is drained to advance side strain clamp from described wire cross-arm certainly.
In the present embodiment, the spacing of described upper ground wire hanging point on wire jumper hanging point and the described earth wire support 3 of wire jumper support 5 is 3m-4m.
In the present embodiment, described upper on wire jumper support 5 average mark be furnished with three place's wire jumper hanging points.
In the present embodiment, described upper around soft the jumping onto around mode of wire jumper support 5 employing suspension 3I string.
In the present embodiment, described is above 5m-7m around the one-sided length of wire jumper support 5.
In the present embodiment, the height of exhaling of described anchor support is 39m-48m.
For different UHV transmission line engineerings, also difference to some extent of gap that transmission pressure forms circle size, need adjust according to concrete extra-high voltage around the each several part size of tower on corresponding wire jumper.
Concrete, the invention provides the embodiment around anchor support on one ± 800kV UHVDC Transmission Lines wire jumper, with reference to Fig. 2, on described wire jumper, be horizontal dry font steel tower around anchor support, comprising: earth wire support, jumper wire rack, wire cross-arm, tower body and tower leg.Wherein jumper wire rack by conventional dry font anchor support horizontal arrangement at conducting wire hanging point place, be arranged in innovatively earth wire support outside and arrange that an one pole is around jumping jumper wire rack, on one pole, be drained to large size side strain clamp around wire jumper from small size side strain clamp, reach on wire jumper around layout.Iron tower structure is for being all around arranged symmetrically with, and the height of exhaling of described anchor support 1 is 39m～48m.
Earth wire support, is erected at tower body top.On earth wire support, plane is substantially vertical with tower body axis.The vertical height of earth wire support and conducting wire hanging point is 22.5m; Earth wire support cantilever span is 15.9m; Ground wire hanging point and wire jumper hanging point spacing are 3.1m.
Upper around jumper wire rack, be arranged in earth wire support outside, wire jumper support lower plane is substantially vertical with earth wire support axis.By to two I type strings soft jump onto around, 3I type string soft jump onto around and two I type string rigid jumper on around etc. several schemes preferably, adopt and hang soft the jumping onto around mode of 3I string; Above get 6m around the one-sided length of wire jumper support.
Wire cross-arm, is erected at tower body both sides, and cross-arm lower plane is vertical with axis.The space that the tower body of every side cross-arm and cross-arm below surrounds meets the requirement of electric specialty gap.Conducting wire hanging point is 3 to hang together a little, and therefore full tower one has 12 place's conducting wire hanging points, and every place hanging point is bolted hanging wire angle steel, and the one side that also comprises being connected with hanging wire angle steel is close to the structure angle steel on the main material of cross-arm.
Tower leg, tower body extends tower leg top, and tower body axis is vertical with tower body horizontal plane.
In conjunction with concrete engineering actual conditions, the present embodiment ± 800kV UHVDC Transmission Lines wire jumper on around the correlated performance parameter of anchor support in table 1.
Table 1
The design condition of table 1 correspondence is: wind speed 27m/s, icing 15mm, unequal leg design.Designed load return period is 100 years, and coefficient for importance of structure gets 1.1, and wire adopts 6 × JL/G2A-900/75, and ground wire adopts LBGJ-150-20AC.Steel tower is angle steel tower, adopts Q420, Q345 and tri-kinds of materials of Q235.
On extra-high voltage direct-current wire jumper described in the embodiment of the present invention, around tower, tower head size can meet electric clearance requirement; By rational structure design, make it have enough mechanical strengths, bear because the wire trade mark increases and the raise increase of the various loads that the tower body change in size that causes brings of voltage, make by preferred arrangement that structure is attractive in appearance, reasonable stress, reach the object that reduces tower weight.
On the extra-high voltage direct-current wire jumper of the embodiment of the present invention around anchor support be by the basis of conventional dry font anchor support on development, there is the typical advantages of conventional dry word tower, simple in structure, stressed clear, busy line corridor is also narrow, and construction and installation and maintenance convenience, accumulate abundant operation and design experiences; Have advantages of on wire jumper around form simultaneously.
Take small stream Luo Du left bank-Jinhua, Zhejiang ± 800 kilovolt HVDC transmission line engineering as example, in the time of the control of anchor support wire jumper distance to the ground, 0～20 degree corner can adopt down and draw single V string mouse flexible jumper and upper around three I string flexible jumper two schemes.
Change into wire jumper around cloth postpone from the stressed load angle of anchor support, upper around wire jumper anchor support with under high conventional type, draw compared with anchor support with exhaling, wire is vertical, level, longitudinal load do not change, only earth wire support has had more the upper load around wire jumper and 3 string jumper strings, and anchor support load is almost had no significant effect.
Calculate according to full stress calculation Procedure modeling, to drawing the tower material index situation contrast around two kinds of patterns of anchor support JSR27151 on anchor support JC27151 and wire jumper of the present invention under the conventional jumpers under same design, as shown in table 2.
Table 2
As can be seen from Table 2, on wire jumper around anchor support JSR27151 with under high conventional type, draw compared with anchor support with exhaling, tower material on average increases 3.67t.From single base anchor support, on wire jumper, on average increase 3.67t steel around anchor support, but from anchor support engineering in service condition, especially at high slope alpine terrain, according to " V " type wire jumper insulator string equivalent string, long 9m considers, exhale under the wire jumper that is equivalent to exhale height to be 48m around anchor support JSR27151-39 on the wire jumper of the high 39m of being and draw anchor support JC27151-48, tower material is saved 10.36t.To sum up analogize analysis, for identical service condition and topographic features, adopt on wire jumper and save tower material 8%～10% around anchor support, cancelled hard jumping simultaneously on wire jumper around layout, as considered the price differential of wire jumper insulator string, economy will be more remarkable.
Can find out, on anchor support wire jumper, both meet environmental requirement around arranging, also save circuit cost, avoid the problem of the rising tower height of opening the earthwork or large cost, this has direct effect to environmental protection and reduction construction costs.
In sum, on the UHVDC Transmission Lines wire jumper of the embodiment of the present invention around formula anchor support, by a utmost point of high slope side from the above drainage of limit wire cross-arm, make high slope upside one utmost point wire jumper not become the governing factor of anchor support tower height, thereby avoid producing not evolution problem or because high slope trees distance being chopped at a tree not because of wire jumper distance to the ground.And, for the anchor support being positioned at compared with steep side slope, limit phase wire jumper adopts upper around arrangement, reduce on the one hand the impact on environment, effectively lower on the other hand shaft tower and exhale height, reduce tower material of iron tower consumption, finally reach and save the circuit comprehensive method of investment, convenient construction, the object of raising circuit operational reliability.
In the present invention, applied specific embodiment principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (6)
- On a UHVDC Transmission Lines around formula anchor support, comprise tower body, tower leg, earth wire support and wire cross-arm, it is characterized in that, around wire jumper support, described upper vertical around the lower plane of wire jumper support and the axis of described earth wire support in described earth wire support outside layout one;By described upper around wire jumper support, upper around wire jumper, retreating side strain clamp is drained to advance side strain clamp above from described wire cross-arm certainly.
- On UHVDC Transmission Lines according to claim 1 around formula anchor support, it is characterized in that, the spacing of the ground wire hanging point on wire jumper hanging point and the described earth wire support of described wire jumper support is 3m-4m.
- On UHVDC Transmission Lines according to claim 1 around formula anchor support, it is characterized in that, described upper on wire jumper support average mark be furnished with three place's wire jumper hanging points.
- On UHVDC Transmission Lines according to claim 1 around formula anchor support, it is characterized in that, describedly upper adopt and hang soft the jumping onto around mode of 3I string around wire jumper support.
- On UHVDC Transmission Lines according to claim 1 around formula anchor support, it is characterized in that, described upper be 5m-7m around the one-sided length of wire jumper support.
- On UHVDC Transmission Lines according to claim 1 around formula anchor support, it is characterized in that, described anchor support to exhale high be 39m-48m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641883.XA CN103835567A (en) | 2013-12-03 | 2013-12-03 | Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310641883.XA CN103835567A (en) | 2013-12-03 | 2013-12-03 | Upward-winding tension-resistant tower on extra-high-voltage direct-current transmission line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299489B (en) * | 2014-09-12 | 2016-08-24 | 中国南方电网有限责任公司超高压输电公司梧州局 | Super-pressure and extra-high voltage hybrid multifunctional transmission line of electricity training set |
| EP3492674A4 (en) * | 2016-07-26 | 2020-05-13 | Jiangsu Shemar Electric Co., Ltd. | Cross arm and angle tower and tension support comprising the same |
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2013
- 2013-12-03 CN CN201310641883.XA patent/CN103835567A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104299489B (en) * | 2014-09-12 | 2016-08-24 | 中国南方电网有限责任公司超高压输电公司梧州局 | Super-pressure and extra-high voltage hybrid multifunctional transmission line of electricity training set |
| EP3492674A4 (en) * | 2016-07-26 | 2020-05-13 | Jiangsu Shemar Electric Co., Ltd. | Cross arm and angle tower and tension support comprising the same |
| US11283254B2 (en) | 2016-07-26 | 2022-03-22 | Shanghai Shemar Power Engineering Co., Ltd | Cross arm and angle tower and tension tower comprising the same |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: CHINA POWER ENGINEERING CONSULTING (GROUP) CORPORATION Applicant after: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Applicant after: Co., Ltd of Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Corporation Applicant after: Co., Ltd of Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Applicant after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Applicant after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Applicant after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Applicant after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: China Power Engineering Consulting Group Corporation Applicant before: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Applicant before: Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Cor Applicant before: Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Applicant before: Huabei Power Design Inst., China Power Engineering Consulting Group Applicant before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation Applicant before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation Applicant before: North China Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
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Application publication date: 20140604 |