CN201498997U - Three phase current feeder conversion system - Google Patents
Three phase current feeder conversion system Download PDFInfo
- Publication number
- CN201498997U CN201498997U CN2009201620097U CN200920162009U CN201498997U CN 201498997 U CN201498997 U CN 201498997U CN 2009201620097 U CN2009201620097 U CN 2009201620097U CN 200920162009 U CN200920162009 U CN 200920162009U CN 201498997 U CN201498997 U CN 201498997U
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- Prior art keywords
- tower
- transposition
- transmission line
- power transmission
- phase
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- 238000006243 chemical reaction Methods 0.000 title abstract description 6
- 230000017105 transposition Effects 0.000 claims description 74
- 230000005540 biological transmission Effects 0.000 claims description 57
- 239000012212 insulator Substances 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The utility model discloses a single-circuit three phase current feeder conversion system. The conversion system comprises a conversion tower for supporting the single-circuit three-phase current feeder and at least one bypass system for rolling any one phase of the single-circuit three phase current feeder, wherein the bypass system comprises at least one bypass tower. The embodiment of the utility model enlarges the space between leads and an iron tower by utilizing the bypass system for conduction rolling so as to meet the requirements of higher electric clearance for ultra-high voltage. Besides, the conversion system is suitable for various voltage levels.
Description
Technical field
The utility model relates to the wire transposition technical field, particularly three-phase alternating current power transmission line transposition system.
Background technology
The wire spacing of single loop three-phase alternating current transmission line its three leads in other modes except that equilateral triangle is arranged is unequal, and the reactance of wire spacing decision lead, therefore, lead is not as being the words that are the equilateral triangle arrangement, three phase of impedance are unbalanced, and circuit is longer, and this imbalance is more serious, and can produce unbalance voltage and electric current, the operation and the radio communication of generator exerted an adverse impact.For this reason, in the long distance powedr transmission process, need balance all phase voltage, electric current, carry out wire transposition.
At present, conventional method is to use with the tower transposition, its transposition process as shown in Figure 1: establish single loop three-phase alternating current power transmission line putting in order from left to right and be A phase, B phase, C phase, wherein A phase, C are the limit phase mutually, and B is middle phase mutually.Transposition tower carries out around drawing mutually to A, B, make the physical location of A phase become middle phase mutually by the limit, the physical location of B phase by in become the limit phase mutually, and transposition tower is by add the wire jumper cross-arm on body of the tower to the C phase around drawing, make C phase circuit through the wire jumper cross-arm around one week of body of the tower, the physical location of realizing the C phase by right edge mutually to the conversion of limit, left side phase.
Use is during with the tower transposition form, gap between lead and the iron tower is less, is difficult for satisfying at the electric clearance of stipulating in drawing process, especially after the extra-high voltage electric power system puts into operation, because the electric clearance that ultra high voltage requires is big, adopt with the tower transposition to be difficult to satisfy its requirement.
The utility model content
In view of this, the purpose of this utility model is to provide three-phase alternating current power transmission line transposition system, and to solve the implacable problem of ultra high voltage electric clearance, the transposition system that while the utility model provides also is applicable to all the other each electric pressures.
The utility model is achieved in that
A kind of single loop three-phase alternating current power transmission line transposition system comprises:
Be used to support the transposition tower of described single loop three-phase alternating current power transmission line;
Bypath system around arbitrary phase of drawing described single loop three-phase alternating current power transmission line or polyphase ac power transmission line.
Preferably, described bypath system comprises the first bypass tower, the second bypass tower;
The described first bypass tower is connected in the first node of the described first bypass tower side by first insulator string and described single loop three-phase alternating current power transmission line; The described second bypass tower is connected in the Section Point of the described second bypass tower side by second insulator string and described single loop three-phase alternating current power transmission line.
Preferably, be distributed with a plurality of nodes between described first node and the described Section Point.
Preferably, on described a plurality of node jumper wire spacing rod is installed.
Preferably, described transposition tower adopts comprehensive unequal leg design.
Preferably, described bypath system comprises the 3rd bypass tower;
Described single loop three-phase alternating current power transmission line and described the 3rd bypass tower are connected in the 3rd node on the described single loop three-phase alternating current power transmission line.
From technique scheme as can be seen, the utility model is implemented in outer arbitrary phase or the polyphase ac power transmission line to single loop three-phase alternating current power transmission line of transposition tower by bypath system to carry out around drawing, with compare with the tower transposition form, increase the space between power transmission line and the iron tower, thereby satisfied the bigger electric clearance needs of ultra high voltage.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is with the schematic diagram of tower transposition form in the prior art;
The transposition system transposition schematic diagram that Fig. 2 provides for the utility model embodiment one;
The jumper wire spacing rod scheme of installation that Fig. 3 provides for the utility model embodiment two;
The another transposition schematic diagram of transposition system that Fig. 4 provides for the utility model embodiment three;
The transposition schematic diagram of the transposition system that Fig. 5 provides for the utility model embodiment four with a bypass tower;
The transposition system commutation schematic diagram that Fig. 6 provides for the utility model embodiment five;
The another commutation schematic diagram of transposition system that Fig. 7 provides for the utility model embodiment six.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses ultra high voltage transposition system, to solve the implacable problem of ultra high voltage electric clearance.
This transposition system is made up of a transposition tower and at least one bypath system, wherein, is hung with three wire jumper strings on the transposition tower, and arbitrary bypath system comprises at least one bypass tower.
Fig. 2 shows a kind of transposition schematic diagram of described transposition system, and this system comprises transposition tower 201, bypass tower 202 and bypass tower 203.
For convenience, before the embodiment of the invention is called tower with transposition tower 201 near the one side of bypass towers 202,203, after the one side of bypass tower 202,203 is called tower dorsad, single loop three-phase alternating current power transmission line putting in order and be A phase, B phase, C phase from right to left behind tower, wherein A is in the phase in the correspondence behind tower of corresponding the right phase, B behind the tower, C is corresponding left side phase behind tower, and its transposition process is:
Described bypass tower 202 is connected in the node 205 of described bypass tower 202 sides by insulator string 204 and described A cross streams power transmission line, described bypass tower 203 is connected in the node 207 of described bypass tower 203 sides by insulator string 206 and described A cross streams power transmission line, described A cross streams power transmission line by bypass tower 202,203 around drawing, the right is changed to the preceding left side of tower phase mutually behind the tower;
Wherein, be hung with wire jumper string 208 on the described transposition tower 201, described A cross streams power transmission line is by 208 drainages of wire jumper string, and described wire jumper string 208 works to support A cross streams power transmission line, prevents that A phase power transmission line from contacting with transposition tower 201;
Described B cross streams power transmission line by the wire jumper string 209 that hangs on the described transposition tower 201 around drawing, be changed to the right phase before the tower behind tower mutually;
Described C cross streams power transmission line by the wire jumper string 210 that hangs on the described transposition tower 201 around drawing, phase the left side is changed to before the tower mutually behind tower.
Through above-mentioned transposition process, single loop three-phase alternating current power transmission line putting in order from right to left becomes B phase, C phase, A phase before the tower mutually by the A phase behind the tower, B phase, C.
Preferably,, avoid lead under short-circuit conditions, to stick together simultaneously, can between node 205 and node 207, choose a plurality of nodes jumper wire spacing rod is installed in order to guarantee the heading spacing of lead between node 205 and the node 207.Fig. 3 shows a kind of installation site of jumper wire spacing rod: node 211 is chosen in the position at distance node 205 preset distances (as 2 meters), node 212 is chosen in position apart from node 207 preset distances (as 2 meters), and chooses the lead between node 213 and 214 trisection nodes 205 and the node 207.Described jumper wire spacing rod promptly is installed on the described node 211-214.Certainly, also can between node 205 and node 207, choose the installation that node carries out jumper wire spacing rod arbitrarily.
Transposition tower among the utility model embodiment has adopted the Q420 high-strength steel in a large number, and 8.8 grades of high strength bolts of supporting employing, selects the suitable wide and body of the tower gradient of mouth simultaneously, with structural shape, the reduction tower weight of simplifying transposition tower.Transposition tower has also adopted comprehensive unequal leg design, and this design can be provided with respectively according to the length of topography and geomorphology to four legs of transposition tower, to reduce the destruction to original landforms to greatest extent.
The foregoing description becomes B phase, C phase, A phase before the tower with single loop three-phase alternating current power transmission line putting in order from right to left mutually by the A phase behind the tower, B phase, C, the another kind transposition schematic diagram that Fig. 4 shows the transposition system is to be changed to C, A, B with single loop three-phase alternating current power transmission line putting in order from right to left by A, B, C, because its transposition process is similar to the above embodiments, does not give unnecessary details at this.
Bypath system among the above embodiment adopts two bypass towers, and in fact bypath system also can adopt a bypass tower to finish transposition, and Fig. 5 shows the transposition schematic diagram of the transposition system with a bypass tower, and this system comprises transposition tower 501, bypass tower 502.
Described bypass tower 502 is connected in the node 503 on the described A cross streams power transmission line, described A cross streams power transmission line by bypass tower 502 around drawing, the right is changed to the preceding left side of tower phase mutually behind the tower;
Wherein, be hung with wire jumper string 504 on the described transposition tower 501, described A AC power line is by 504 drainages of wire jumper string, and described wire jumper string 504 works to support A cross streams power transmission line, prevents that A phase power transmission line from contacting with transposition tower 501;
Described B cross streams power transmission line by the wire jumper string 505 that hangs on the described transposition tower 501 around drawing, be changed to the right phase before the tower behind tower mutually;
Described C cross streams power transmission line by the wire jumper string 506 that hangs on the described transposition tower 501 around drawing, phase the left side is changed to before the tower mutually behind tower.
Above embodiment adopts a bypath system to replace, and in fact also can adopt a plurality of bypath systems to finish transposition, because its transposition process and the foregoing description are similar, does not give unnecessary details at this.
Above embodiment has realized the transposition of three-phase alternating current power transmission line, owing to adopt bypath system to carry out lead around drawing outside the transposition body of the tower, has increased the space between lead and the iron tower, makes it to satisfy the bigger electric clearance needs of ultra high voltage.
In the transmission of electricity process, (be not inconsistent as the phase arrangement of transformer station's requirement and the phase arrangement of power transmission line) for some reason and need exchange the two-phase in the single loop three-phase alternating current power transmission line, the transposition system that the utility model embodiment provides also can be used for phase or limit and limit exchange mutually among the Bian Xiangyu.
Fig. 6 shows the replace commutation schematic diagram of system of the utility model embodiment, and this system is made up of transposition tower 601, bypass tower 602 and bypass tower 603, wherein:
Described bypass tower 602 is connected in the node 605 of described bypass tower 602 sides by insulator string 604 and described A cross streams power transmission line, described bypass tower 603 is connected in the node 607 of described bypass tower 603 sides by insulator string 606 and described A cross streams power transmission line, described A cross streams power transmission line by bypass tower 602,603 around drawing, be changed to the preceding left side of tower phase mutually behind tower;
Wherein, be hung with 608 pairs of described A AC power line of wire jumper string on the described transposition tower 601 and carry out drainage, described wire jumper string 608 works to support B cross streams power transmission line, prevents that A cross streams power transmission line from contacting with transposition tower 601;
Described B cross streams power transmission line by the wire jumper string 609 that hangs on the described transposition tower 601 around drawing, phase the left side is changed to before the tower mutually behind tower;
Described C cross streams power transmission line by the wire jumper string 610 that hangs on the described transposition tower 601 around drawing, the right is changed to the right phase before the tower mutually behind the tower.
Through above-mentioned commutation process, A has realized exchange with the position of B cross streams power transmission line.
Corresponding with it, the utility model embodiment also provides a kind of system of replacing to be used to realize C and B exchange mutually, and Fig. 7 shows its commutation process, because commutation process is similar to the above embodiments, does not give unnecessary details at this.
Above embodiment has carried out commutation mutually to the middle and limit of three-phase alternating current power transmission line, is realized for the limit of three-phase alternating current power transmission line and the limit a plurality of bypath systems of can using mutually between mutually, does not also do at this and gives unnecessary details.
Above embodiment adopts the bypass tower to carry out drainage, has realized that middle limit and limit mutually or the commutation of limit and limit phase, owing to carry out lead around drawing outside the transposition body of the tower, have increased the space between lead and the iron tower, makes it to satisfy the bigger electric clearance needs of ultra high voltage.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. the transposition system of a single loop three-phase alternating current power transmission line comprises the transposition tower that is used to support described single loop three-phase alternating current power transmission line, it is characterized in that, also comprises:
Bypath system around arbitrary phase of drawing described single loop three-phase alternating current power transmission line or polyphase ac power transmission line.
2. transposition as claimed in claim 1 system is characterized in that:
Described bypath system comprises the first bypass tower, the second bypass tower;
The described first bypass tower is connected in the first node of the described first bypass tower side by first insulator string and described single loop three-phase alternating current power transmission line; The described second bypass tower is connected in the Section Point of the described second bypass tower side by second insulator string and described single loop three-phase alternating current power transmission line.
3. transposition as claimed in claim 2 system is characterized in that, is distributed with a plurality of nodes between described first node and the described Section Point.
4. transposition as claimed in claim 3 system is characterized in that, on described a plurality of nodes jumper wire spacing rod is installed.
5. transposition as claimed in claim 1 system is characterized in that, described transposition tower adopts comprehensive unequal leg design.
6. transposition as claimed in claim 1 system is characterized in that:
Described bypath system comprises the 3rd bypass tower;
Described single loop three-phase alternating current power transmission line and described the 3rd bypass tower are connected in the 3rd node on the described single loop three-phase alternating current power transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201620097U CN201498997U (en) | 2009-06-30 | 2009-06-30 | Three phase current feeder conversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201620097U CN201498997U (en) | 2009-06-30 | 2009-06-30 | Three phase current feeder conversion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498997U true CN201498997U (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201620097U Expired - Fee Related CN201498997U (en) | 2009-06-30 | 2009-06-30 | Three phase current feeder conversion system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201498997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078313A (en) * | 2012-11-14 | 2013-05-01 | 陕西省电力公司规划评审中心 | Method for inhibiting induction voltage and current of 750kV parallel single-line construction line |
| CN107134749A (en) * | 2017-05-23 | 2017-09-05 | 国核电力规划设计研究院有限公司 | A kind of transposition tower and its interchanging method |
-
2009
- 2009-06-30 CN CN2009201620097U patent/CN201498997U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078313A (en) * | 2012-11-14 | 2013-05-01 | 陕西省电力公司规划评审中心 | Method for inhibiting induction voltage and current of 750kV parallel single-line construction line |
| CN103078313B (en) * | 2012-11-14 | 2015-04-29 | 陕西省电力公司规划评审中心 | Method for inhibiting induction voltage and current of 750kV parallel single-line construction line |
| CN107134749A (en) * | 2017-05-23 | 2017-09-05 | 国核电力规划设计研究院有限公司 | A kind of transposition tower and its interchanging method |
| CN107134749B (en) * | 2017-05-23 | 2019-01-08 | 国核电力规划设计研究院有限公司 | A kind of transposition tower and its interchanging method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: CHINA POWER ENGINEERING CONSULTING (GROUP) CORPORATION Patentee after: North-China Power Engineering (Beijing) Co., Ltd. Patentee after: Co., Ltd of Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Patentee after: Co., Ltd of Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Patentee after: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Power Engineering Consulting Group Corporation Patentee before: North-China Power Engineering (Beijing) Co., Ltd. Patentee before: Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group Patentee before: Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Cor Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation Patentee before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20170630 |
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| CF01 | Termination of patent right due to non-payment of annual fee |