CN202050218U - Waving-prevention, adhesion-prevention and destruction-prevention system for high-voltage power transmission line - Google Patents
Waving-prevention, adhesion-prevention and destruction-prevention system for high-voltage power transmission line Download PDFInfo
- Publication number
- CN202050218U CN202050218U CN2011201345631U CN201120134563U CN202050218U CN 202050218 U CN202050218 U CN 202050218U CN 2011201345631 U CN2011201345631 U CN 2011201345631U CN 201120134563 U CN201120134563 U CN 201120134563U CN 202050218 U CN202050218 U CN 202050218U
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- prevention
- conductor spacer
- power transmission
- line
- waving
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims description 58
- 125000006850 spacer group Chemical group 0.000 claims description 37
- 238000013016 damping Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 5
- 230000004993 binary fission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 3
- 239000002131 composite material Substances 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 238000012795 verification Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Abstract
The utility model relates to a power transmission line system, in particular to a waving-prevention, adhesion-prevention and destruction-prevention system for a high-voltage power transmission line. A separation rod, a sag regulator and an additional iron tower are additionally arranged between sub wires of each phase of composite conducting wire. Through the additional arrangement of the separation rod and the sag regulator on the composite conducting wire and the preservation of a large margin, verification and study results show the correctness and the feasibility of the measure, through the adoption of the additional arrangement of the separation rod, the adhesion of conducting wires is avoided, the line abrasion is reduced, the power supply reliability is improved, the electric network stability is enhanced, the power supply loss caused by power failure overhaul is reduced, and the economic benefits are improved. On the basis of ensuring the safety, the live line operation project is innovated, the live line operation level is improved, the line improvement can completely adapt to the existing current load, the goal of reformation is reached, in addition, the saving effect is reached, and the loss is reduced.
Description
Technical field
The utility model relates to a kind of power transmission line system, i.e. the anti-anti-whiplash system of antiseized company of waving of ultra-high-tension power transmission line.
Background technology
In the prior art, behind high-pressure delivery circuit increase load current, the sub-line adhesion of the frequent appearance of multiple wire line lead, whiplash, sag reduces, and the initiation distance to the ground is foot phenomenon not.After lead sticked together, the geometry spacing of bundle conductor reduced significantly, and the corona discharge starting voltage reduces, and causes occurring easily corona discharge, and local direct-to-ground capacitance also reduces, and these all can cause the increase of line loss and near the interference of communications facility.On the other hand, after adhesion appearred in bundle conductor, lead whiplash phenomenon was outstanding, and lead weares and teares easily, not only further increases line loss, also might cause disconnected strand of lead, even the accident of broken string.In the actual motion, find that lead still twines the phenomenon of (permanent deformation).Infrared detection shows, the adhesion phase conductor is higher 10～20 ℃ than normal phase conductor temperature, on-the-spot inspection finds that part adhesion bar individual line lead adhesion degree is more and more serious, even load occurs and be reduced to zero section and have than obvious noise, and these have all had a strong impact on the safe operation of system.
Existing operating multiple lead is considered to adopt suitable reduction sub-conductor height usually, increase the spacing of the upper and lower sub-conductor of double bundle conductor, to avoid or to reduce the bundle conductor adhesion.Past reduces sag, substantially all is in whole strain section, adopt to increase sub-conductor sag down, and the method that reduces to go up the sub-conductor sag increases the spacing of sub-conductor, and this method construction is complicated, and workload is big, finds that the gap adjusts also relatively difficulty inadequately again.Installing conductor spacer additional between the multiple sub-line of lead does not appear in the newspapers.
The utility model content
The purpose of this utility model is that a kind of use more just safety, the anti-anti-whiplash system of antiseized company of waving of reliable more ultra-high-tension power transmission line are provided at above-mentioned deficiency.
Technical solution of the present utility model is: the anti-anti-whiplash system of antiseized company of waving of ultra-high-tension power transmission line installs conductor spacer additional, adjusts sag and installs iron tower additional between the sub-line of lead again mutually every.The main application of power transmission sequence bundle conductor conductor spacer is relative motion between the sub-conductor of the multiple lead of restriction and the geometry that keeps bundle conductor under normal operation, suppresses the concussion of lead in the span.Press wire type, external diameter, sectional area and division number and select binary fission ball strand damping conductor spacer FJQ-404, the installation site of conductor spacer is determined by following requirement:
(1) for the first time span to the second time span or fall first pair for the second time the ratio of span be selected in 0.55-0.65; In addition, conductor spacer should not be arranged to be symmetrical distribution for span central authorities.
(2) end time span length is selected in the 30-45m scope the good conductor spacer of damping capacity, can be selected in the 25-35m scope the general or non-damp type conductor spacer of damping capacity.
(3) maximum time span length, the conductor spacer good to damping capacity generally should not surpass 80-90m, generally should not surpass 60-65m to the general or non-damp type conductor spacer of damping capacity.
Sag is adjusted into 1 strain section or a plurality of strain section.
Advantage of the present invention is: 1, successfully realize the multiple lead of 220kV power transmission line is installed additional conductor spacer and adjustment degree of speeding, and leave bigger nargin, the checking result of study shows its correctness and feasibility, employing is installed conductor spacer additional and can be avoided lead to stick together, reduce the wearing and tearing of circuit, and increased power supply reliability, strengthened grid stability, minimizing has improved economic benefit because of the loss of supply that interruption maintenance causes.2, the circuit that conductor spacer is applicable to similar other electric pressures of situation is installed in development additional, possesses versatility.3, actual from producing, guaranteeing on the safe basis that innovation live line working project improves the live line working level, for effort has been made in the reliable power supply of enterprise security.Circuit improves can adapt to existing current capacity fully, has reached the purpose of transforming, and has reached the effect of saving, and has reduced loss.
Below in conjunction with embodiment execution mode of the present utility model is described in further detail.
Description of drawings
Accompanying drawing is the utility model power transmission line one phase structure sketch.
Embodiment
Embodiment
The white high line improvement and design of Tonghua 220KV: 220 kilovolts of white high line nineteen nineties put into operation, extend long 98.86 kilometers, iron tower amounts to 237 bases, wire type is 2 * LGJ-240,414 meters of average spans, and maximum is apart from more than 1000 meters, the mountain region is 76.9 kilometers completely, 15.3 kilometers on hills, 6.66 kilometers in Plain, single loop circuit.2010, line load rose to 450MVA, had lead to send abnormal noise, find No. 140～No. 141 tower bar C mutually the middle part 300m lead of having an appointment be sticked together, load is dropped to 3000MVA after, it is normal that lead recovers gradually.
After 220 kilovolts of white high lines increased load current, through on-the-spot field observation, sub-line adhesion, whiplash frequently appearred in line conductor, and sag reduces and causes not foot phenomenon of distance to the ground.The main cause that causes two bundle conductor adhesion phenomena is that the distance between the sub-conductor is too small, and adding bigger load current, to keep lead bonding.In these two factors, load current belongs to uncontrollable factor, and the distance between the sub-conductor then can suitably be controlled.Adopt the method that increases conductor spacer can not change the original design standard of circuit, and reach the problem that solves the lead adhesion.After lead sticks together, the geometry spacing of bundle conductor reduces significantly, and it is original 27% that the corona discharge starting voltage is reduced to, and causes occurring easily corona discharge, local direct-to-ground capacitance also reduces, and these all can cause the increase of line loss and near the interference of communications facility.On the other hand, after adhesion appearred in bundle conductor, lead whiplash phenomenon was outstanding, and lead weares and teares easily, not only further increases line loss, also might cause disconnected strand of lead, even the accident of broken string.For preventing disconnected strand of lead, broken string accident, guarantee the line security operation, so to this circuit installation interval rod, install iron tower additional, the adjustment sag is transformed.
The white high line of scope of design 220KV completely the installation interval rod, install iron tower additional, adjust sag.Because the former circuit #53 of this engineering～#54 lead is 5.5 meters of safe distances over the ground now, install conductor spacer additional after lead can't satisfy distance to the ground, need between #53～#54 tower, install a basic iron tower additional through field observation.Through on-the-spot field observation, #1～#2 tower lead is to 5.6 meters of hillside safe distances, install conductor spacer additional after lead can't satisfy distance to the ground, increase so the #2 tower need be shifted, to satisfy lead safe distance over the ground.
The type selecting of conductor spacer:, select binary fission ball strand damping conductor spacer FJQ-404 according to wire type, external diameter, sectional area and division number.The wire clamp of ball strand conductor spacer is by the aluminium alloy manufacturing, and the steel ball excellent with ball-and-socket and support is anchor point, along level and all rotatable 5～8 degree of vertical direction.The centripetal force that conductor spacer bears the generation of lead short circuit electromagnetic attraction is 3000～4000N, and coefficient of safety is 2.5, and the axial collapse loading of conductor spacer is not less than 7000～10000N.Quantity: 7400.
The conductor spacer mounting distance: (1) for the first time span should be selected in about 0.55～0.65 the ratio of the span second time (or fall first pair of span for the second time).In addition, conductor spacer should not be arranged to be symmetrical distribution for span central authorities.
(2) end time span length can be selected in 30～45m scope the good conductor spacer of damping capacity, can be selected in 25～35m scope the general or non-damp type conductor spacer of damping capacity.
(3) maximum time span length, the conductor spacer good to damping capacity generally should not surpass 80～90m, generally should not surpass 60～65m to the general or non-damp type conductor spacer of damping capacity.
Sag is adjusted: because after increasing load current and installation interval rod, conductor temperature is risen and the wire weight increase, and carry out field observation through strengthening load several times, found that the lead sag descends about 2 meters, partly the section lead distance to the ground can not satisfy the requirement of safe operation, must be to the sag adjustment in part location, to satisfy the requirement of lead distance to the ground.Sag is adjusted: 10 strain sections.
Referring to accompanying drawing, every 1 on sub-line of answering lead mutually installs conductor spacer 2 additional.
Employing is installed conductor spacer additional and can be avoided lead to stick together, and has reduced the wearing and tearing of circuit, and has increased power supply reliability.Install conductor spacer additional and can avoid original circuit to lose the use effect, avoid restringing and other line hardwares, can save down substantial contribution.Owing to can adopt the live line working mode to eliminate this type of defective, so on the activity duration, can arrangement at the right time implement, the threat of having avoided the long-time existence of defective to be brought, can effectively reduce the interruption duration of equipment, improve the circuit reliability of operation, strengthen the stability of electrical network, improved the power supply reliability of circuit greatly, minimizing is increased economic efficiency because of the loss of supply that interruption maintenance causes.Improved circuit can adapt to existing current capacity, reaches the transformation purpose, finally reaches the effect of saving, reduces loss.
Claims (3)
1. the anti-anti-whiplash system of antiseized company of waving of ultra-high-tension power transmission line is characterized in that installing conductor spacer additional, adjust sag and installing iron tower additional between the sub-line of lead again mutually every.
2. according to the anti-anti-whiplash system of antiseized company of waving of the described ultra-high-tension power transmission line of claim 1, it is characterized in that selecting binary fission ball strand damping conductor spacer FJQ-404 by wire type, external diameter, sectional area and division number, the installation site of conductor spacer is determined by following requirement:
(1) for the first time span to the second time span or fall first pair for the second time the ratio of span be selected in 0.55-0.65;
(2) end time span length is selected in the 30-45m scope the damp type conductor spacer, and non-damp type conductor spacer is selected in the 25-35m scope;
(3) maximum time span length to the damp type conductor spacer, is selected in 80-90m, and non-damp type conductor spacer is selected in 60-65m.
3. according to claim 1 or the anti-anti-whiplash system of antiseized company of waving of 2 described ultra-high-tension power transmission lines, it is characterized in that sag is adjusted into 1 strain section or a plurality of strain section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201345631U CN202050218U (en) | 2011-04-29 | 2011-04-29 | Waving-prevention, adhesion-prevention and destruction-prevention system for high-voltage power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201345631U CN202050218U (en) | 2011-04-29 | 2011-04-29 | Waving-prevention, adhesion-prevention and destruction-prevention system for high-voltage power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202050218U true CN202050218U (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201345631U Expired - Fee Related CN202050218U (en) | 2011-04-29 | 2011-04-29 | Waving-prevention, adhesion-prevention and destruction-prevention system for high-voltage power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202050218U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290774A (en) * | 2011-04-29 | 2011-12-21 | 吉林省电力有限公司通化供电公司 | System capable of preventing galloping and adhering as well as whipping for high voltage power transmission line |
| CN103532078A (en) * | 2013-10-31 | 2014-01-22 | 国家电网公司 | Windage yaw prevention flexible insulation inhaul cable for high-voltage power transmission line and installation method |
| CN103928864A (en) * | 2014-04-09 | 2014-07-16 | 国家电网公司 | 66kV-220kV power transmission line composite wire seam electrified adjusting method |
| CN107818563A (en) * | 2017-10-26 | 2018-03-20 | 西安工程大学 | A kind of transmission line of electricity bundle spacing space measurement and localization method |
-
2011
- 2011-04-29 CN CN2011201345631U patent/CN202050218U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290774A (en) * | 2011-04-29 | 2011-12-21 | 吉林省电力有限公司通化供电公司 | System capable of preventing galloping and adhering as well as whipping for high voltage power transmission line |
| CN103532078A (en) * | 2013-10-31 | 2014-01-22 | 国家电网公司 | Windage yaw prevention flexible insulation inhaul cable for high-voltage power transmission line and installation method |
| CN103928864A (en) * | 2014-04-09 | 2014-07-16 | 国家电网公司 | 66kV-220kV power transmission line composite wire seam electrified adjusting method |
| CN103928864B (en) * | 2014-04-09 | 2016-08-31 | 国家电网公司 | 220kV-66kV electric transmission line hot-line adjusts the method for multiple wire linear slit |
| CN107818563A (en) * | 2017-10-26 | 2018-03-20 | 西安工程大学 | A kind of transmission line of electricity bundle spacing space measurement and localization method |
| CN107818563B (en) * | 2017-10-26 | 2021-06-08 | 西安工程大学 | Space measurement and positioning method for split conductor spacing of power transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20120928 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120928 Address after: Tonghua City, Jilin Province, Xinhua Street 134001 Dongchang District No. 770 Patentee after: Jilin Electric Power Company Limited, Tonghua Power Supply Company Patentee after: State Grid Corporation of China Address before: Tonghua City, Jilin Province, Xinhua Street 134001 Dongchang District No. 770 Patentee before: Jilin Electric Power Company Limited, Tonghua Power Supply Company |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20190429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |