CN205046930U - Positive negative phase sequence of single loop transform angle -steel tower - Google Patents
Positive negative phase sequence of single loop transform angle -steel tower Download PDFInfo
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- CN205046930U CN205046930U CN201520685685.8U CN201520685685U CN205046930U CN 205046930 U CN205046930 U CN 205046930U CN 201520685685 U CN201520685685 U CN 201520685685U CN 205046930 U CN205046930 U CN 205046930U
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Abstract
The utility model provides a positive negative phase sequence of single loop transform angle -steel tower. It includes body of the tower, top layer ground wire cross arm, middle level wire cross arm, lower floor's wire cross arm, middle level wire cross arm is the T style of calligraphy, arranges the both sides cross arm from the perpendicular target circuit orientation of body of the tower, arranges supplementary cross arm on one side from the parallel target circuit orientation of body of the tower towards the large size side, lower floor's wire cross arm is the T style of calligraphy, arranges the both sides cross arm from the perpendicular target circuit orientation of body of the tower, arranges supplementary cross arm on one side from the parallel target circuit orientation of body of the tower towards the trumpet side. The utility model discloses a positive negative phase sequence of single loop transform problem is solved to a basic shaft tower, has avoided the single time adjacent tangent tower wire vertical state of string bias that dangles simultaneously.
Description
technical field:
The utility model relates to ultra-high-tension power transmission line technical field, particularly relates to a kind of single loop positive negative phase sequence angle of transformation head tower.
background technology:
In ultra-high-tension power transmission line, due between single, double time of positive one inverse, the circuit of two ends transformer station phase sequence one repeatedly the situation such as conversion occur repeatedly, often cause transformer station's phase sequence inconsistent with access phase sequence, causing cannot normal power transmission, therefore is necessary to convert to line phase-sequence detection the uniformity guaranteeing phase sequence.Under normal circumstances, transmission line of electricity self-powered side transformer substation framework rises, stop to power side transformer substation framework, with towards power side transformer substation framework for direction of advance is numbered, supply side is small size side, power side is large size side, then newly-built angle steel tower both sides situation has following three kinds, 1) small size side transformer substation framework and large size side angle head tower; 2) small size side angle head tower and large size side angle head tower; 3) small size side angle head tower and large size side transformer substation framework.
By the impact of the factor such as system schema, site environment, the position of positive negative phase sequence conversion can be divided into intermediate conversion and terminal to convert two kinds, and intermediate conversion negative phase sequence change point both sides of making a comment or criticism are respectively small size side angle head tower and large size side angle head tower; Terminal converts negative phase sequence change point both sides of making a comment or criticism and is respectively angle steel tower and transformer substation framework.
Existing single loop positive negative phase sequence mapping mode mainly adopts the monolateral cross-arm of double loop angle steel tower to realize, and concrete mode is as follows.
1) for intermediate conversion situation, phase conductor in the single loop angle steel tower of small size side is connected to phase in large size side angle head tower through angle steel tower upper strata, double loop cross-arm, by single loop angle steel tower limit, small size side in the angle steel tower of double loop mutually or be connected to small size side angle head tower another side phase mutually down.
2) for terminal change situation, phase in small size side or large size side single loop angle steel tower is connected to through angle steel tower upper strata, double loop cross-arm, by transformer substation framework limit phase or lower another side phase being connected to small size side or large size side single loop angle steel tower mutually in the angle steel tower of double loop by transformer substation framework.
In aforesaid way, angle steel tower place, double loop wire is vertical arrangement, single loop angle steel tower place wire is triangularly arranged, easily cause adjacent list to return tangent tower wire suspension string and depart from vertical state, when electric clearance does not meet the demands, adjacent tower transformation need be carried out, so that significantly increase construction cost and floor space.
In aforesaid way, only adopt the one-sided cross-arm of double loop strain rod tower, usually using the monolateral cross-arm taper of double loop angle steel tower as wire center, wire center and shaft tower center inconsistent, be not easy to measurement and positioning.
summary of the invention:
The purpose of this utility model is to provide a kind of single loop positive negative phase sequence angle of transformation head tower, and this tower adopts a base shaft tower to solve single loop positive negative phase sequence transformation problem, avoids adjacent list simultaneously and returns tangent tower wire suspension string and depart from vertical state.
In order to solve Problems existing in background technology, the utility model is by the following technical solutions: it comprises tower body, top layer ground wire cross-arm, middle layer conductor cross-arm, lower layer conductor cross-arm, described tower body top is provided with top layer ground wire cross-arm, be provided with middle layer conductor cross-arm below top layer ground wire cross-arm, below middle layer conductor cross-arm, be provided with lower layer conductor cross-arm;
Described middle layer conductor cross-arm is T font, arranges both sides cross-arm from tower body vertical target line direction, arranges auxiliary cross-arm from tower body parallel object line direction towards large size side;
Described lower layer conductor cross-arm is T font, arranges both sides cross-arm from tower body vertical target line direction, arranges auxiliary cross-arm from tower body parallel object line direction towards small size side.
In described middle layer conductor cross-arm, lower layer conductor cross-arm from tower body parallel object line direction arrange while assist the hard jumper string all hanging with band stay pipe below cross-arm.
The present invention has the following advantages compared to prior art:
(1) compared with negative phase sequence conversion scheme positive with existing single loop, the present invention program takes into full account side, front and back arrangement of conductor, on the impact of adjacent shaft tower, and reasonable Arrangement wire cross-arm, avoid arrangement of conductor to change, avoid adjacent list to return tangent tower wire suspension string and depart from vertical state.
(2), compared with negative phase sequence conversion scheme positive with existing single loop, shaft tower wire cross-arm of the present invention is symmetrical, and structure is more stable, is convenient to measurement and positioning.
(3) hang with the hard jumper string of band stay pipe below auxiliary cross-arm, hang the cross-arm underhung jumper string that wire direction is contrary with auxiliary cross-arm, this design effectively controls wire jumper windage yaw, falls and reduces cross-arm size.
(4) appropriate design assists the position of cross-arm direction and wire hitch point, ensure that the electrical distance of auxiliary cross-arm and wire, falls and reduces cross-arm size.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of middle layer conductor cross-arm, lower layer conductor cross-arm;
Fig. 4 is positive negative phase sequence conversion wiring schematic diagram in the middle of the utility model;
Fig. 5 is the utility model terminal positive negative phase sequence conversion wiring schematic diagram.
detailed description of the invention:
With reference to Fig. 1-3, the utility model it comprise tower body 1, top layer ground wire cross-arm 2, middle layer conductor cross-arm 3, lower layer conductor cross-arm 4, described tower body 1 top is provided with top layer ground wire cross-arm 2, be provided with middle layer conductor cross-arm 3 below top layer ground wire cross-arm 2, below middle layer conductor cross-arm 3, be provided with lower layer conductor cross-arm 4.
Described middle layer conductor cross-arm 4 is in T font, both sides cross-arm is arranged from tower body 1 vertical target line direction, arrange while auxiliary cross-arm towards large size side from tower body 1 parallel object line direction, described lower layer conductor cross-arm 4 is in T font, arrange both sides cross-arm from tower body 1 vertical target line direction, arrange auxiliary cross-arm from tower body 1 parallel object line direction towards small size side.
Described middle layer conductor cross-arm with in lower layer conductor cross-arm from tower body parallel object line direction arrange while assist cross-arm direction contrary, can adjust according to actual conditions towards direction.
Described middle layer conductor cross-arm and the both sides cross-arm with target line vertical from tower body in lower layer conductor cross-arm, hang the wire consistent with the circuit forward direction wire contrary with circuit direction of advance respectively.
In described middle layer conductor cross-arm 3, lower layer conductor cross-arm 4 from tower body 1 parallel object line direction arrange while assist the hard jumper string all hanging with band stay pipe below cross-arm.
When middle Phase-Sequence Transformation and circuit is not with angle or turns right along direction of advance time:
With reference to Fig. 4-5,1) if the auxiliary cross-arm of layer conductor cross-arm is towards small size side under shaft tower, phase in large size side is connected to by hanging the tower body place of wire in single loop positive negative phase sequence conversion tower above layer conductor cross-arm in small size side mutually, limit wire on the left of small size side is connected to the left side cross-arm of middle layer conductor cross-arm, utilize the hard jumper string of band stay pipe and the jumper string of auxiliary cross-arm, on the right side of the cross-arm access large size side, right side causing middle layer conductor cross-arm; Small size side right edge wire is connected to the right side cross-arm of lower layer conductor cross-arm, utilizes the hard jumper string of band stay pipe and the jumper string of auxiliary cross-arm, on the left of the cross-arm access large size side, left side causing lower layer conductor cross-arm.
2) if the auxiliary cross-arm of layer conductor cross-arm is towards large size side under shaft tower, phase in large size side is connected to by hanging the tower body place of wire in single loop positive negative phase sequence conversion tower above layer conductor cross-arm in small size side mutually; Limit wire on the left of small size side is connected to the left side cross-arm of lower layer conductor cross-arm; Small size side right edge wire is connected to the right side cross-arm of middle layer conductor cross-arm.
When middle Phase-Sequence Transformation and circuit is not with angle or turns left along direction of advance time:
With reference to Fig. 4-5,1) if the auxiliary cross-arm of layer conductor cross-arm is towards small size side under shaft tower, be connected to phase in large size side by hanging the tower body place of wire in single loop positive negative phase sequence conversion tower above layer conductor cross-arm in small size side mutually; Limit wire on the left of small size side is connected to the left side cross-arm of lower layer conductor cross-arm; Small size side right edge wire is connected to the right side cross-arm of middle layer conductor cross-arm.
2) if the auxiliary cross-arm of layer conductor cross-arm is towards large size side under shaft tower, phase in large size side is connected to by hanging the tower body place of wire in single loop positive negative phase sequence conversion tower above layer conductor cross-arm in small size side mutually; Limit wire on the left of small size side is connected to the left side cross-arm of middle layer conductor cross-arm; Small size side right edge wire is connected to the right side cross-arm of lower layer conductor cross-arm.
The utility model assists cross-arm direction and the mode of connection can perform with reference to above-mentioned embodiment, also can carry out according to actual conditions, and when circuit direction of advance is not with angle, the wire of same phase sequence only needs access same layer wire cross-arm; When circuit direction of advance band angle, same phase sequence need access same layer wire cross-arm, after wiring simultaneously completes, and auxiliary cross-arm and tendency more and more far away.
Claims (2)
1. a single loop positive negative phase sequence angle of transformation head tower, it is characterized in that, it comprises tower body, top layer ground wire cross-arm, middle layer conductor cross-arm, lower layer conductor cross-arm, described tower body top is provided with top layer ground wire cross-arm, be provided with middle layer conductor cross-arm below top layer ground wire cross-arm, below middle layer conductor cross-arm, be provided with lower layer conductor cross-arm;
Described middle layer conductor cross-arm is T font, arranges both sides cross-arm from tower body vertical target line direction, arranges auxiliary cross-arm from tower body parallel object line direction towards large size side;
Described lower layer conductor cross-arm is T font, arranges both sides cross-arm from tower body vertical target line direction, arranges auxiliary cross-arm from tower body parallel object line direction towards small size side.
2. angle steel tower according to claim 1, is characterized in that, that arranges from tower body parallel object line direction in described middle layer conductor cross-arm, lower layer conductor cross-arm assists the hard jumper string all hanging with band stay pipe below cross-arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520685685.8U CN205046930U (en) | 2015-09-07 | 2015-09-07 | Positive negative phase sequence of single loop transform angle -steel tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520685685.8U CN205046930U (en) | 2015-09-07 | 2015-09-07 | Positive negative phase sequence of single loop transform angle -steel tower |
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| Publication Number | Publication Date |
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| CN205046930U true CN205046930U (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520685685.8U Active CN205046930U (en) | 2015-09-07 | 2015-09-07 | Positive negative phase sequence of single loop transform angle -steel tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155916A (en) * | 2015-09-07 | 2015-12-16 | 安徽华电工程咨询设计有限公司 | Single-loop angle steel tower with positive and negative phase-sequence transformation |
| CN106555498A (en) * | 2016-09-26 | 2017-04-05 | 安徽华电工程咨询设计有限公司 | A kind of single time overhead transmission line cable cut-offs and draws lower angle tower |
-
2015
- 2015-09-07 CN CN201520685685.8U patent/CN205046930U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155916A (en) * | 2015-09-07 | 2015-12-16 | 安徽华电工程咨询设计有限公司 | Single-loop angle steel tower with positive and negative phase-sequence transformation |
| CN106555498A (en) * | 2016-09-26 | 2017-04-05 | 安徽华电工程咨询设计有限公司 | A kind of single time overhead transmission line cable cut-offs and draws lower angle tower |
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