CN103022951B - Around jumping transposition tower in common-tower double-return road - Google Patents
Around jumping transposition tower in common-tower double-return road Download PDFInfo
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- CN103022951B CN103022951B CN201210576614.5A CN201210576614A CN103022951B CN 103022951 B CN103022951 B CN 103022951B CN 201210576614 A CN201210576614 A CN 201210576614A CN 103022951 B CN103022951 B CN 103022951B
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Abstract
The invention discloses a kind of in the common-tower double-return road of power system transmission line around jumping transposition tower, to be especially applicable in High aititude, ultra-high-tension power transmission line transposition and to use.Technical problem to be solved by this invention is to provide a kind of transposition tower can not increasing wire jumper cross-arm length and just can realize replacing on common-tower double-return road, it comprises tower body, along side before and after transmission line direction, upper conductor cross-arm and lower wire cross-arm are installed at tower body, upper and lower wire jumper is connected with between upper conductor cross-arm and lower wire cross-arm, the leading portion of the 3rd power transmission line is connected on cross-arm, and is connected with one of them in upper and lower wire jumper by conjugating wire jumper on the 3rd; The back segment of the 3rd power transmission line is connected on lower cross-arm, and is connected with above-mentioned about same wire jumper by the 3rd time displacement wire jumper.Present invention saves consumptive material and manufacturing cost, alleviate tower body weight, the transport in the area that is conducive to having inconvenient traffic and installation, wire jumper draws and connects simple, is conducive to construction and operation maintenance, has stronger promotional value.
Description
Technical field
The present invention relates to a kind of common-tower double-return road tower for power system transmission line, be especially applicable to transposition in High aititude, ultra-high-tension power transmission line and use.
Background technology
The effect of Conductor transposition is to reduce unsymmetrical current and unbalance voltage when electric power system normally runs, and in the power network of neutral-point solid ground, length all should replace more than the transmission line of 100km.Transposition cycle length should not be greater than 200km.
The transposition form of current long distance transmission line generally has multiple, mainly contain, the first is by two single loop construction, and long transmission line transposition is generally carried out at each single loop, this technology is comparatively ripe, and investment comparatively economizes, but require higher to line corridor, be suitable for that landform is smooth, the application of the area of easy construction.It two is that the strain tower that adopts in 500 kilovolts of multiple-circuit on same tower is outer around jumping transposition form, namely installs wire jumper cross-arm additional to carry out the transposition between upper and lower wire at upper, middle and lower wire cross arm end, needs to ensure corresponding electric clearance distance simultaneously.
And along with high pressure, the application of extra high voltage network and the increase of high altitude localities power transmission engineering, in order to reduce high altitude localities line corridor cleaning, construction cost, employing two single loop construction are not suitable for, need to adopt same tower double back transmission line, and it is outer around jumping transposition form according to existing strain tower, due to rarefaction of air, electric clearance required distance is larger, the comparatively long lead cross-arm that will install additional on transposition tower, ensure the safe distance between upper and lower cross-arm, thus add load and the tower material consumption of steel tower, also cost of transportation and construction cost is added with regard to corresponding, this pole is not suitable for the application in traffic and transport inconvenience area.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of transposition tower can not increasing wire jumper cross-arm length and just can realize replacing on common-tower double-return road.
The present invention solves in common-tower double-return road that its technical problem adopts around jumping transposition tower, comprise tower body, tower body is provided with cross-arm on the left and right sides vertical with transmission line direction, middle cross-arm and lower cross-arm, and cross-arm, middle cross-arm and lower cross-arm homonymy are connected to same loop transmission line on above-mentioned; Be made up of the first power transmission line, the second power transmission line and the 3rd power transmission line with loop transmission line, along side before and after transmission line direction, upper conductor cross-arm be installed on the top of tower body, along side before and after transmission line direction, lower wire cross-arm is installed in the bottom of tower body; Upper and lower wire jumper is connected with between the upper conductor cross-arm and lower wire cross-arm of front and back homonymy; The leading portion of the first power transmission line is connected on middle cross-arm, and is connected with the back segment be connected on upper cross-arm through the first displacement wire jumper; The leading portion of the second power transmission line is connected on lower cross-arm, and is connected with the back segment be connected on middle cross-arm through the second displacement wire jumper; The leading portion of the 3rd power transmission line is connected on cross-arm, and is connected with one of them in upper and lower wire jumper by conjugating wire jumper on the 3rd; The back segment of the 3rd power transmission line is connected on lower cross-arm, and is connected with above-mentioned about same wire jumper by the 3rd time displacement wire jumper.
The back segment of upper and lower wire jumper with the 3rd power transmission line is connected by the insulator string being arranged on lower cross-arm side end by the 3rd time described displacement wire jumper.
Insulator string is all adopted to be connected at above-mentioned all power transmission lines, wire jumper with the cross-arm junction on tower body.
Adopt in common-tower double-return road of the present invention around jumping transposition tower, outer on tower structure basis, hop jump position at existing strain tower, in reservation, phase is outer around hop jump bit architecture to lower phase to middle phase, middle phase, respectively increasing a wire cross-arm along the forward and backward side of line direction simultaneously, in realization mutually to lower phase around jumping, the corresponding minimizing of wire jumper cross-arm lateral length on its tower body, consumptive material and manufacturing cost are saved, alleviate tower body weight, be conducive to have inconvenient traffic regional transport and installation, wire jumper draws and connects simple, is conducive to construction and operation maintenance, has stronger promotional value.
Accompanying drawing explanation
Fig. 1 is redirect transposition tower structural representation of the present invention;
Fig. 2 is the schematic top plan view of the 3rd power transmission line redirect transposition.
Mark in figure: A-first power transmission line, B-second power transmission line, C-the 3rd power transmission line, 1-tower body, the upper cross-arm of 21-, cross-arm in 22-, cross-arm under 23-, 3-insulator string, 31-upper conductor cross-arm, 32-lower wire cross-arm, the upper and lower wire jumper of 41-, 51-first conjugates wire jumper, and 52-second conjugates wire jumper, 53-the 3rd conjugates wire jumper, 54-the 3rd time displacement wire jumper.
Embodiment
Around jumping transposition tower in common-tower double-return road of the present invention, as shown in Figure 1, comprise tower body 1, tower body 1 is provided with cross-arm 21 on the left and right sides vertical with transmission line direction, middle cross-arm 22 and lower cross-arm 23, is connected to same loop transmission line at upper cross-arm 21, middle cross-arm 22 and lower cross-arm 23 homonymy.Be made up of the first power transmission line A, the second power transmission line B and the 3rd power transmission line C with loop transmission line, in FIG two comprise with loop transmission line, the first loop be made up of power transmission line A1, B1, C1, the second servo loop be made up of power transmission line A2, B2, C2.
Respectively upper conductor cross-arm 31 is all installed on the top of tower body 1 along side before and after transmission line direction, along side before and after transmission line direction, lower wire cross-arm 32 is all installed in the bottom of tower body 1.Upper and lower wire jumper 41 is connected between the upper conductor cross-arm 31 and lower wire cross-arm 32 of front and back homonymy.
With the transposition structure in the first loop, connection of the present invention is described below, power transmission line A1, B1, C1 are wherein only the signs done to clearly demonstrate structure of the present invention, be not the restriction to concrete circuit, in actual track structure, the position of above-mentioned three power transmission lines can be exchanged each other.On front side of tower body 1 wherein, rear side is also in an embodiment in order to clearly demonstrate, and is not the concrete restriction to actual track.
The leading portion of the first power transmission line A1 is connected to middle cross-arm 22 from the front side of tower body 1, and is connected with the first power transmission line A1 back segment be connected on rear side of upper cross-arm 21 through the first displacement wire jumper 51, the transposition of the middle phase so just achieving the first power transmission line upwards phase.
The leading portion of the second power transmission line B1 is connected to lower cross-arm 23 from the front side of tower body 1, and is connected with the second power transmission line B1 back segment be connected on rear side of middle cross-arm 22 through the second displacement wire jumper 52, the transposition of middle in opposite directions phase under so just achieving the second power transmission line.
The leading portion of the 3rd power transmission line C1 is connected to upper cross-arm 21 from the front side of tower body 1, and is connected with the wire jumper up and down 41 be arranged on front side of tower body 1 by conjugating wire jumper 53 on the 3rd; The back segment of the 3rd power transmission line C1 is connected on the rear side of lower cross-arm 23, and is connected with about the same wire jumper 41 be arranged on front side of tower body 1 by the 3rd time displacement wire jumper 54, so just achieves the transposition of the upper downward phase mutually of the 3rd power transmission line.
As shown in Figure 1, first power transmission line A1 and the second power transmission line B1 and first displacement wire jumper 51, second conjugates the side end that wire jumper 52 is all mounted in cross-arm 21, middle cross-arm 22, lower cross-arm 23, substantially in the same plane, only there is height and position change in transmission line direction, therefore the first displacement wire jumper 51 is connected on upper cross-arm 21 by insulator string 3, and the second displacement wire jumper 52 is connected on middle cross-arm 22 by insulator string 3.
Redirect for the 3rd power transmission line C1 replaces, as shown in Figure 2, the installation of upper conductor cross-arm 31 on tower body 1 higher than on cross-arm 21, the installation of lower wire cross-arm 32 on tower body 1 is lower than lower cross-arm 23, and need to carry out redirect transposition by the wire jumper up and down 41 in the middle of tower body 1, conjugate on 3rd be connected directly between the 3rd power transmission line C1 between wire jumper 53 leading portion and upper and lower wire jumper 41 on, 3rd time displacement wire jumper 54 then needs the insulator string 3 by being arranged on lower cross-arm 23 side end to be connected by the back segment of upper and lower wire jumper 41 with the 3rd power transmission line C1, like this by the safe spacing between guarantee the 3rd time displacement wire jumper 54 and tower body 1.
Equally, for the transposition structure of second servo loop, replace identical principle for employing and the first loop, utilizes the wire jumper up and down 41 be arranged on rear side of tower body 1, can realize the transposition of transmission line A2, B2, C2.
For two loops, one of them adopting upper and lower wire jumper 41 respectively replaces, if just can avoid the interference that produces at tower body 1 homonymy and potential safety hazard.
According to the code requirement of transmission line, insulator string 3 is all adopted to be connected at above-mentioned all power transmission lines, wire jumper with the cross-arm junction on tower body 1.
Claims (3)
1. in common-tower double-return road around jumping transposition tower, comprise tower body (1), tower body (1) is provided with cross-arm (21) on the left and right sides vertical with transmission line direction, middle cross-arm (22) and lower cross-arm (23), and cross-arm (21), middle cross-arm (22) and lower cross-arm (23) homonymy are connected to same loop transmission line on above-mentioned; Be made up of the first power transmission line (A), the second power transmission line (B) and the 3rd power transmission line (C) with loop transmission line, it is characterized in that,
Be separately installed with upper conductor cross-arm (31) on the top of tower body (1) along side before and after transmission line direction, along side before and after transmission line direction, lower wire cross-arm (32) be installed in the bottom of tower body (1);
Upper and lower wire jumper (41) is connected with between the upper conductor cross-arm (31) and lower wire cross-arm (32) of front and back homonymy;
The leading portion of the first power transmission line (A) is connected on middle cross-arm (22), and is connected with the back segment be connected on upper cross-arm (21) through the first displacement wire jumper (51);
The leading portion of the second power transmission line (B) is connected on lower cross-arm (23), and is connected with the back segment be connected on middle cross-arm (22) through the second displacement wire jumper (52);
The leading portion of the 3rd power transmission line (C) is connected on cross-arm (21), and is connected with one of them in upper and lower wire jumper (41) by conjugating wire jumper (53) on the 3rd; The back segment of the 3rd power transmission line (C) is connected on lower cross-arm (23), and is connected with above-mentioned about same wire jumper (41) by the 3rd time displacement wire jumper (54).
2. in common-tower double-return road as claimed in claim 1 around jumping transposition tower, it is characterized in that, the back segment of upper and lower wire jumper (41) with the 3rd power transmission line (C) is connected by the insulator string (3) being arranged on lower cross-arm (23) side end by the 3rd time described displacement wire jumper (54).
3. in common-tower double-return road as claimed in claim 1 around jumping transposition tower, it is characterized in that, all adopt insulator string (3) to be connected at above-mentioned all power transmission lines, wire jumper with the cross-arm junction on tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210576614.5A CN103022951B (en) | 2012-12-27 | 2012-12-27 | Around jumping transposition tower in common-tower double-return road |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210576614.5A CN103022951B (en) | 2012-12-27 | 2012-12-27 | Around jumping transposition tower in common-tower double-return road |
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| Publication Number | Publication Date |
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| CN103022951A CN103022951A (en) | 2013-04-03 |
| CN103022951B true CN103022951B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210576614.5A Active CN103022951B (en) | 2012-12-27 | 2012-12-27 | Around jumping transposition tower in common-tower double-return road |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953216B (en) * | 2014-03-24 | 2017-12-15 | 朱晓鹏 | A kind of dual loop transmission line that string tangent tower is combined using V-arrangement |
| CN109458032B (en) * | 2018-12-07 | 2024-03-26 | 绍兴大明电力设计院有限公司 | Double-loop body-penetrating straight line narrow foundation tower |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202970099U (en) * | 2012-12-27 | 2013-06-05 | 四川电力设计咨询有限责任公司 | Same tower double-circuit internal winding jumping transposition tower |
Family Cites Families (2)
| 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 |
| CN202026064U (en) * | 2011-05-13 | 2011-11-02 | 河北省电力勘测设计研究院 | Single-double hybrid power transmission line transposition tower with auxiliary arm |
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- 2012-12-27 CN CN201210576614.5A patent/CN103022951B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202970099U (en) * | 2012-12-27 | 2013-06-05 | 四川电力设计咨询有限责任公司 | Same tower double-circuit internal winding jumping transposition tower |
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| CN103022951A (en) | 2013-04-03 |
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