CN103001165A - Same-tower dual-loop single-line transposition tower - Google Patents

Same-tower dual-loop single-line transposition tower Download PDF

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Publication number
CN103001165A
CN103001165A CN2012105764972A CN201210576497A CN103001165A CN 103001165 A CN103001165 A CN 103001165A CN 2012105764972 A CN2012105764972 A CN 2012105764972A CN 201210576497 A CN201210576497 A CN 201210576497A CN 103001165 A CN103001165 A CN 103001165A
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China
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tower
arm
transmission line
cross
power transmission
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CN2012105764972A
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CN103001165B (en
Inventor
任德顺
佟继春
徐宏宇
刘然
王江涛
荣建林
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Sichuan Electric Power Design and Consulting Co Ltd
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Sichuan Electric Power Design and Consulting Co Ltd
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Abstract

The invention discloses a same-tower dual-loop single-line transposition tower used for electric transmission lines of an electric power system, which is particularly suitable for transposition use in high-altitude and high-voltage electric transmission lines. The invention provides a transposition tower capable of realizing transposition and being relatively low in examine and repair cost without increasing the lengths of wire cross arms on the basis of same-tower dual-loop, wherein the transposition tower comprises a tower body; an upper wire cross arm and a lower wire cross arm are arranged on one side of the front side and the back side of the upper and the lower parts of the tower body along the direction of the electric transmission lines; an upper and a lower jumper wires are connected between the upper wire cross arm and the lower wire cross arm; the front section of the third electric transmission line is connected with the upper cross arm, and is connected with the upper and the lower jumper wires through a third upper deflection jumper wire; and the back section of the third electric transmission line is connected with the lower cross arm, and is connected with the upper and the lower jumper wires through a third lower deflection jumper wire. Through the application of the same-tower dual-loop single-line transposition tower disclosed by the invention, the material and manufacturing costs are saved, the weight of the tower body is reduced, and the transposition tower is beneficial to transportation and installation of areas with inconvenient traffic.

Description

Common-tower double-return road single line transposition tower
Technical field
The present invention relates to a kind of common-tower double-return road tower for power system transmission line, especially be applicable to transposition use in high height above sea level, the ultra-high-tension power transmission line.
Background technology
The effect of circuit transposition is unsymmetrical current and unbalance voltage in order to reduce electric power system and normally to move, and in the power network of neutral-point solid ground, the transmission line that length surpasses 100km all should replace.Transposition cycle length should not be greater than 200km.
The transposition form of present long distance transmission line generally has multiple, mainly contain, the first is by two single loop construction, and the long transmission line transposition is generally carried out at each single loop, this technology is comparatively ripe, and investment economizes, but had relatively high expectations in the circuit corridor, is suitable for that landform is smooth, use in the area of easy construction.Its two be outside the strain tower that in 500 kilovolts of common-tower double-return circuits, adopts around hop jump position mode, guarantee under the corresponding electric clearance required distance at needs that namely upper, middle and lower wire cross arm end installs the wire jumper cross-arm additional to carry out the transposition between upper and lower wire.
And along with high pressure, the increase of the application of extra high voltage network and high altitude localities power transmission engineering, in order to reduce the cleaning of circuit corridor, high altitude localities, construction cost, two single loop construction have been not suitable for adopting, need to adopt same tower double back transmission line, and it is outer around hop jump position mode according to existing strain tower, because rarefaction of air, the electric clearance required distance is larger, will transposition tower install additional than the long lead cross-arm, guarantee the up and down safe distance between the cross-arm, thereby increased load and the tower material consumption of steel tower, also with regard to corresponding cost of transportation and the construction cost of having increased, this utmost point is not suitable for the application in traffic and transportation inconvenience area.
Summary of the invention
Technical problem to be solved by this invention provides a kind of wire cross-arm length that can not increase on the common-tower double-return road just can realize transposition and the lower transposition tower of maintenance risk.
The present invention solves the common-tower double-return road single line transposition tower that its technical problem adopts, comprise tower body, all be equipped with on the tower body left and right side and the upper cross-arm of power transmission line perpendicular direction, middle cross-arm and lower cross-arm, cross-arm, middle cross-arm and lower cross-arm homonymy are connected with respectively the first loop and second servo loop transmission line on described; The first loop comprises the first power transmission line, the second power transmission line and the 3rd power transmission line, and second servo loop comprises the first power transmission line, the second power transmission line and the 3rd power transmission line; Wherein side in the upper and lower part of tower body along power transmission line direction front side or rear side is equipped with upper conductor cross-arm, lower wire cross-arm, is connected with up and down wire jumper between described upper conductor cross-arm and lower wire cross-arm; The leading portion of the first power transmission line is connected on the middle cross-arm, and is connected with back segment on being connected to upper cross-arm through the first displacement wire jumper; The leading portion of the second power transmission line is connected on the lower cross-arm, and is connected with back segment on being connected to middle cross-arm through the second displacement wire jumper; The leading portion of the 3rd power transmission line is connected on the cross-arm, and is connected with wire jumper up and down through displacement wire jumper on the 3rd; The back segment of the 3rd power transmission line is connected on the lower cross-arm, and is connected with wire jumper up and down through the 3rd time displacement wire jumper.
Described tower body is angle tower, and upper conductor cross-arm and lower wire cross-arm are arranged on the front side of angle tower, and described the first loop is connected to the inboard of angle tower.
Described the 3rd time displacement wire jumper is installed in lower cross-arm side end by insulator string.
The junction of the cross-arm on above-mentioned all power transmission lines, wire jumper and tower body all adopts insulator string to be connected.
Adopt common-tower double-return of the present invention road single line transposition tower, compare around jumping transposition tower with existing strain tower is outer, wire jumper cross-arm lateral length on its tower body has reduced, material and manufacturing cost have been saved, alleviated the weight of tower body, be conducive to transportation and the installation in ungetable area, wiring is simple, be conducive to installation and operation maintenance, wire jumper only is arranged on a wherein side of tower body front and back side up and down, form so one-sided transposition, the danger coefficient when having reduced inspection and maintenance has stronger promotional value.
Description of drawings
Fig. 1 is the structural representation of single line transposition tower of the present invention;
Fig. 2 is the schematic top plan view of the 3rd power transmission line redirect transposition;
Fig. 3 is the schematic top plan view of the 3rd power transmission line redirect transposition of angle tower.
Shown in the figure: A-the first power transmission line, B-the second power transmission line, C-the 3rd power transmission line, 1-tower body, the 11-angle tower, the upper cross-arm of 21-, cross-arm among the 22-, cross-arm under the 23-, 3-insulator string, 31-upper conductor cross-arm, 32-lower wire cross-arm, 41-is wire jumper up and down, 51-the first displacement wire jumper, 52-the second displacement wire jumper, displacement wire jumper on the 53-the 3rd, the 3rd time displacement wire jumper of 54-, 61-is inboard, the 62-outside, 7-axis.
Embodiment
Common-tower double-return of the present invention road single line transposition tower, comprise tower body 1, on tower body 1 left side, upper cross-arm 21 with the power transmission line perpendicular direction all is installed on the right side, middle cross-arm 22 and lower cross-arm 23, cross-arm 21 on described, middle cross-arm 22 and lower cross-arm 23 homonymies are connected with respectively same loop transmission line: with loop transmission line by the first power transmission line A, the second power transmission line B and the 3rd power transmission line C form, upper at tower body 1, the bottom is equipped with upper conductor cross-arm 31 and lower wire cross-arm 32 along a wherein side of power transmission line direction front side or rear side, is connected with up and down wire jumper 41 between described upper conductor cross-arm 31 and lower wire cross-arm 32.
As shown in Figure 1, two double circuit lines comprise, the first loop that is made of power transmission line A1, B1, C1, the second servo loop that is made of power transmission line A2, B2, C2.
Embodiment one:
Below in conjunction with Fig. 1 and Fig. 2, describe with the transposition structure in the first loop connection to invention.
The leading portion of the first power transmission line A1 is connected on the front side of middle cross-arm 22, and is connected with the back segment of the first power transmission line A1 on being connected to upper cross-arm 21 rear sides through the first displacement wire jumper 51, so just realized the first power transmission line A1 in the mutually upwards transposition of phase.
The leading portion of the second power transmission line B1 is connected on the front side of lower cross-arm 23, and is connected with the back segment of the second power transmission line B1 on being connected to middle cross-arm 22 rear sides through the second displacement wire jumper 52, so just realized the second power transmission line B1 lower in opposite directions in the transposition of phase.
The leading portion of the 3rd power transmission line C1 is connected on the front side of cross-arm 21, and is connected with the up and down wire jumper 41 that is installed in tower body 1 front side by displacement wire jumper 53 on the 3rd; The back segment of the 3rd power transmission line C1 is connected on lower cross-arm 23 rear sides, and is connected with the wire jumper 41 about in the of same that is installed in tower body 1 front side by the 3rd time displacement wire jumper 54, has so just realized the upper mutually transposition of phase downwards of the 3rd power transmission line C1.As shown in Figure 2, upper conductor cross-arm 31 is higher than cross-arm 21 in the installation site on the tower body 1, the installation site of lower wire cross-arm 32 on tower body 1 is lower than lower cross-arm 23, and the 3rd power transmission line C1 need to carry out the redirect transposition by wire jumper 41 up and down, displacement wire jumper 53 directly is connected on the leading portion of the 3rd power transmission line C1 and the wire jumper 41 up and down on the 3rd, the 3rd time displacement wire jumper 54 will couple together the back segment of wire jumper 41 and the 3rd power transmission line C1 up and down, and the back segment of the 3rd power transmission line C1 and wire jumper 41 up and down be not in the same side, front and back of tower body 1, as adopt the straight line connected mode, the 3rd time displacement wire jumper 54 may be closer with the distance of tower body 1 in connection procedure, do not meet safety standard, therefore the 3rd time displacement wire jumper 54 also is installed in lower cross-arm 23 side end by insulator string 3, so just can guarantee the safe spacing between the 3rd time displacement wire jumper 54 and the tower body 1.
In above-mentioned transposition structure, because wire jumper 41 only is installed in a side of tower body 1 up and down, therefore corresponding opposite side at tower body 1 carries out the transposition of power transmission line with regard to not installing lower wire jumper 41, reduced the charged of tower body 1, potential safety hazard when having reduced the maintenance of tower body 1 or power transmission line has guaranteed personnel's safety.
For the transposition of second servo loop, only need to the transposition structure identical with the first loop be set at next transposition tower and just can realize the transposition of power transmission line A2, B2, C2, thereby realize two circuit transposition.
Embodiment two:
On the basis of embodiment one, in order to improve the safe distance between the 3rd time displacement wire jumper 54 and the tower body 1, it is better that the angle tower 11 in the transmission line is designed to transposition tower.As shown in Figure 3, because transmission line is through behind the angle tower 11, the power transmission line shape of its front side and rear side has a certain degree, simultaneously on angle tower 11 according to the trend of power transmission line, formed inboard 61 and the outside 62.
Wherein the direction of power transmission line leading portion is vertical with upper cross-arm 21 on the angle tower 11, upper cross-arm 21 on the direction of power transmission line back segment and the angle tower 11 forms angle, wherein the first power transmission line A1 in the first loop, the second power transmission line B1, the 3rd power transmission line C1 are installed in the inboard 61 of angle tower 11, the first power transmission line A2 of second servo loop, the second power transmission line B2, the 3rd power transmission line C2 are installed in the outside 62 of angle tower 11, so the power transmission line of second servo loop need to be by the axis 7 of angle tower 11.
Upper conductor cross-arm 31 and lower wire cross-arm 32 are arranged on the front side of the angle tower 11 that is connected the power transmission line leading portion, structure with embodiment one is identical like this, avoid being installed in rear side and by between the second servo loop power transmission line in the outside 62 because the less potential safety hazard that causes of distance.The leading portion of the 3rd power transmission line C1 in the first loop and back segment are realized transposition by 53, the three times displacement wire jumpers of displacement wire jumper on the up and down wire jumper 41 and the 3rd between upper conductor cross-arm 31 and the lower wire cross-arm 32 54 simultaneously.Because the 3rd time displacement wire jumper 54 is to connect by inboard 61, therefore easy being guaranteed more of the safe distance between the 3rd time displacement wire jumper 54 and the angle tower 11.
The first power transmission line A in above-mentioned two embodiment, the second power transmission line B, the 3rd power transmission line C only are the signs of doing in order to clearly demonstrate structure of the present invention, be not to be restriction to concrete circuit, the position of above-mentioned three power transmission lines can be changed each other in the actual track structure.Tower body 1 wherein and the front side of angle tower 11, rear side also are in an embodiment in order to clearly demonstrate, and are not the concrete restrictions to actual track.
According to the code requirement of transmission line, and to the consideration of potential safety hazard, as preferred embodiment, the junction of each cross-arm on above-mentioned all power transmission lines, wire jumper and tower body 1 all adopts insulator string 3 to be connected.So as shown in Figure 1, so just danger coefficient be can reduce, maintenance and the maintenance of transposition tower are convenient to.

Claims (4)

1. common-tower double-return road single line transposition tower, comprise tower body (1), all be equipped with on tower body (1) left and right side and the upper cross-arm (21) of power transmission line perpendicular direction, middle cross-arm (22) and lower cross-arm (23), cross-arm (21), middle cross-arm (22) and lower cross-arm (23) homonymy are connected with respectively the first loop and second servo loop transmission line on described;
The first loop comprises the first power transmission line (A1), the second power transmission line (B1) and the 3rd power transmission line (C1), and second servo loop comprises the first power transmission line (A2), the second power transmission line (B2) and the 3rd power transmission line (C2);
It is characterized in that,
Wherein side in the upper and lower part of tower body (1) along power transmission line direction front side or rear side is equipped with upper conductor cross-arm (31), lower wire cross-arm (32), is connected with up and down wire jumper (41) between described upper conductor cross-arm (31) and lower wire cross-arm (32);
The leading portion of the first power transmission line (A1) is connected on the middle cross-arm (22), and is connected with back segment on being connected to upper cross-arm (21) through the first displacement wire jumper (51);
The leading portion of the second power transmission line (B1) is connected on the lower cross-arm (23), and is connected with back segment on being connected to middle cross-arm (22) through the second displacement wire jumper (52);
The leading portion of the 3rd power transmission line (C1) is connected on the cross-arm (21), and is connected with wire jumper (41) up and down through displacement wire jumper (53) on the 3rd; The back segment of the 3rd power transmission line (C1) is connected on the lower cross-arm (23), and is connected with wire jumper (41) up and down through the 3rd time displacement wire jumper (54).
2. common-tower double-return as claimed in claim 1 road single line transposition tower, it is characterized in that, described tower body (1) is angle tower (11), upper conductor cross-arm (31) and lower wire cross-arm (32) are arranged on the front side of angle tower (11), and described the first loop is connected to the inboard (61) of angle tower (11).
3. common-tower double-return as claimed in claim 1 or 2 road single line transposition tower is characterized in that described the 3rd time displacement wire jumper (54) is installed in lower cross-arm (23) side end by insulator string (3).
4. common-tower double-return as claimed in claim 1 or 2 road single line transposition tower is characterized in that, the junction of the cross-arm on above-mentioned all power transmission lines, wire jumper and tower body (1) all adopts insulator string (3) to be connected.
CN201210576497.2A 2012-12-27 2012-12-27 Same-tower dual-loop single-line transposition tower Active CN103001165B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104091032A (en) * 2014-07-24 2014-10-08 四川电力设计咨询有限责任公司 Design method for common-tower double-circuit transmission line in heavy ice area
CN104196301A (en) * 2014-08-06 2014-12-10 赵晖 Novel crossed transposition tower
CN105119228A (en) * 2015-08-14 2015-12-02 国家电网公司 A double-loop overhead transmission line overhead single-loop phase modulation wiring rod and a wiring structure
CN103001165B (en) * 2012-12-27 2016-02-03 四川电力设计咨询有限责任公司 Same-tower dual-loop single-line transposition tower
CN115405149A (en) * 2022-09-16 2022-11-29 国网青海省电力公司经济技术研究院 Double-loop transposition tower for power transmission line

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08138470A (en) * 1994-11-16 1996-05-31 Ngk Insulators Ltd Application structure for lightning arrester insulator in transmission line
CN201868825U (en) * 2010-11-23 2011-06-15 中国电力工程顾问集团东北电力设计院 500KV double-circuit self-transposition tower

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001165B (en) * 2012-12-27 2016-02-03 四川电力设计咨询有限责任公司 Same-tower dual-loop single-line transposition tower

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08138470A (en) * 1994-11-16 1996-05-31 Ngk Insulators Ltd Application structure for lightning arrester insulator in transmission line
CN201868825U (en) * 2010-11-23 2011-06-15 中国电力工程顾问集团东北电力设计院 500KV double-circuit self-transposition tower

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001165B (en) * 2012-12-27 2016-02-03 四川电力设计咨询有限责任公司 Same-tower dual-loop single-line transposition tower
CN104091032A (en) * 2014-07-24 2014-10-08 四川电力设计咨询有限责任公司 Design method for common-tower double-circuit transmission line in heavy ice area
CN104091032B (en) * 2014-07-24 2017-03-15 四川电力设计咨询有限责任公司 Heavy icing area common-tower double-return road Transmission Line Design method
CN104196301A (en) * 2014-08-06 2014-12-10 赵晖 Novel crossed transposition tower
CN104196301B (en) * 2014-08-06 2017-07-14 赵晖 A kind of coordinated transposition tower
CN105119228A (en) * 2015-08-14 2015-12-02 国家电网公司 A double-loop overhead transmission line overhead single-loop phase modulation wiring rod and a wiring structure
CN105119228B (en) * 2015-08-14 2017-11-14 国家电网公司 A kind of aerial list of double back overhead transmission line adjusts back connect line bar and wiring construction
CN115405149A (en) * 2022-09-16 2022-11-29 国网青海省电力公司经济技术研究院 Double-loop transposition tower for power transmission line

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