CN101162831A - Divided conductor powerline with loading ice melting scheme - Google Patents
Divided conductor powerline with loading ice melting scheme Download PDFInfo
- Publication number
- CN101162831A CN101162831A CNA2007100358859A CN200710035885A CN101162831A CN 101162831 A CN101162831 A CN 101162831A CN A2007100358859 A CNA2007100358859 A CN A2007100358859A CN 200710035885 A CN200710035885 A CN 200710035885A CN 101162831 A CN101162831 A CN 101162831A
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- Prior art keywords
- ice
- sub
- load
- current
- lead
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- Suspension Of Electric Lines Or Cables (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention discloses a load carried ice melting proposal applicable to splitting the transmission lines of a lead. The present invention adopts three-splitting lead in ice-coated tension resistance section to insulate three sub-leads of the three-splitting lead by a spacing rod so that three independent current circuits are formed. When the three-splitting lead is coated with ice, the three sub-leads are changed from parallel operation into serial operation by an isolating switch and a current guide plate which is arranged on a tension resistance tower wire jumper on two ends of ice-coated tension resistance section so that current on three sub-leads is increased to load current of three times, thereby realizing load carried ice melting for the transmission lines. The circuit principle is also applied to five-splitting lead in ice-coated tension resistance section. The current of the sub-leads is increased to load current of five times by changing the parallel operation into serial operation of the sub-leads to realize load carried ice melting. When the ice-coated tension resistance section adopts six-splitting lead, the six-splitting lead is divided into two three-splitting lead current circuits to realize load carried ice melting.
Description
Technical field
The present invention is applicable to divided conductor powerline with loading ice melting.
Background technology
Till now, powerline ice-covering causes falls rod disconnection and even electric network from collapsing and brings about great losses for global power supply enterprise at the beginning of the last century.For example occur in the ice damage of the Yangtze river basin during the Spring Festival in 2005, only 500 of Hunan Electric Grid kilovolts and 220 kilovolt are just fallen rod disconnection tens places, make Hunan trunk electrical network be on the verge of the edge of collapsing, more than 7,000 ten thousand yuan of direct economic losses, and indirect loss can't be estimated.
For a long time, the serious country of powerline ice-coverings such as Japan, Canada, the U.S., European Union, China is spending a large amount of funds and manpower aspect the control transmission line ice damage, has studied methods such as the molten ice of autotransformer on-load, the molten ice of phase shifting transformer, the molten ice of compound wire on-load, the molten ice of insulator lead transfer load, the molten ice of low curie point magnetic hot line.But technical too complicated, or invest excessively, or effect is undesirable, all can not be promoted and use.
The short circuit melting ice method that China uses on 220 kilovolts and following transmission line at present not only needs independently molten ice power supply and molten ice loop, and operation is many, and electric quantity loss is big, has a strong impact on the safe operation and reliable power supply of electrical network, is the way of haveing no alternative but adopt.And 500 kilovolts and above circuit can't be carried out molten ice at present because system can't provide enough capacities of short circuit.
Summary of the invention
The present invention is by adopting the tripartition lead at the powerline ice-covering strain section, and is insulated from each other with the insulation gap rod three root leads of tripartition lead, forms three independently current circuits.Behind the tripartition wire icing, isolating switch and drainage plate that utilization is installed on the strain tower of two ends make three root leads change into series operation from parallel running, thereby making the electric current increase on the three root leads is three times of load currents, realizes the purpose of the molten ice of transmission line on-load.
Circuit theory of the present invention is: when circuit normally moved, isolating switch GL1, GL2, GL3, GL4 were all closed, each the sub-conductor parallel running of tripartition lead, and current i e1=ie2=ie3=ie sees accompanying drawing 1.When the molten ice of on-load, isolating switch GL1, GL2, GL3, GL4 all open, each the sub-conductor series operation of tripartition lead, and electric current I R=ie1+ie2+ie3=3ie sees accompanying drawing 2.
Technical scheme of the present invention is: (Ps strain tower-Pd strain tower) adopts bundle conductor insulation gap rod in (1) this icing strain section.(2) add a slice between sub-conductor wire clamp in this icing strain section and the link plate and do not have the skirt insulator.(3) on Ps strain tower wire jumper installing isolating switch GLs, drainage plate YL1, drainage plate YL2,, installing isolating switch GLd, drainage plate YL3, drainage plate YL4 on Pd strain tower wire jumper.See accompanying drawing 3.
The invention has the beneficial effects as follows:
(1) forms an independently molten ice system with one or several icing strain section, be easy to implement, the non-icing section of circuit is had no effect.
(2) the tripartition lead of icing strain section is still selected conductor cross-section according to economic current surface density principle, and is consistent with non-icing section transmission capacity.Under the molten ice state, icing strain section sub-conductor flows through three times of load currents can fully satisfy molten ice needs; Simultaneously, each icing strain section can melt ice successively, guarantee the circuit receiving end under molten ice state voltage levvl and the load-bearing capacity of circuit.
(3) three root leads same periods molten ice, also can be when windward side sub-conductor icing be heavier, open one by one of GLs and GLd and close and realize the preferentially molten ice of single sub-conductor, solved inhomogeneous icing and molten ice cause a split lead upset, impaired problem fully.
(4) ice, molten ice be can see on the spot, distant place sight ice, molten ice also can when possessing the telecontrol communication condition, be realized.
(5) technical solution of the present invention does not have specific (special) requirements to lead and shaft tower, adopts insulation gap rod and no skirt insulator promptly to form three separate current loops, and GL1 and GL2 need not on-load and cut-off, and can use isolating switch or vacuum switch, reduced investment.
(6) the relative molten ice of short circuit, technical scheme operation of the present invention less, safe, molten ice electric weight is few, sees formula 1.
Formula 1:J1=(L1/L) Jd
The molten ice of J1-technical solution of the present invention electric weight, the molten ice of Jd-short circuit electric weight, the molten ice of L1-the present invention strain insulator segment length, the molten ice of L-short circuit loop length overall.
Can be when (7) adopting five bundle conductors according to circuit theory of the present invention, by sub-conductor is changed into series operation by parallel running, obtain five times of load currents, reach the purpose of the molten ice of on-load, this to molten ice season 500 kilovolts of light load circuits comparatively suitable.When adopting six-multiple conductor, then can implement by technical solution of the present invention again, be applicable to that China has begun the 750 kilovolt high-tension lines of building at present in the Northwest by six-multiple conductor being divided into two tripartition current in wire loops.
(8) the present invention realizes molten ice under circuit normal power supply situation, solved the problem that 500 kilovolts and 750 kilovolt can't melt ice, principle is simple, be easy to implement, reduced investment, effective, safe operation and reliable power supply to electrical network are significant, and have the very wide prospect of applying.
Description of drawings
Fig. 1 is transmission line icing strain section tripartition sub-conductor parallel running circuit theory diagrams when normally moving.
Fig. 2 is that the transmission line on-load melts icing strain section tripartition sub-conductor series operation circuit theory diagrams when icing.
Fig. 3 is that the molten ice of powerline ice-covering strain section on-load is implemented illustration.
Among Fig. 1,1.GL1,2.GL2,3.GL3,4.GL4,
Among Fig. 2,1.GL1,2.GL2,3.GL3,4.GL4,
Among Fig. 3,1. sub-conductor, 2. sub-conductor, 3. sub-conductor, 4.GLs, 5.GLd, 6.YL1,7.YL2,8.YL3,9.YL4, the 10.Ps strain tower, the 11.Pd strain tower, 12. icing strain sections,
Embodiment
New icing district, stringing road adopts the tripartition lead, still presses the economic current surface density and selects conductor cross-section, presses accompanying drawing 3 and implements, and promptly realizes the molten ice of on-load.Two groups of isolating switches are installed in the gold utensil assembling that the circuit icing strain section that put into operation is transformed lead and lead by accompanying drawing 3 additional and four groups of drainage plates can be realized the molten ice of on-load.
Claims (3)
1. the present invention changes into series operation by three separate current loops that three root leads of icing strain section tripartition lead are formed from parallel running, and it is three times of load currents that the sub-conductor electric current is increased, and has realized the purpose of the molten ice of on-load.
2. according to right 1, the present invention is characterised in that: install isolating switch (vacuum switch) and drainage plate is changed into series operation to three separate current loops from parallel running on the strain tower wire jumper of icing strain section two ends.
3. according to right 1, feature of the present invention also is: also can be according to circuit theory of the present invention when the icing strain section adopts five bundle conductors, by sub-conductor is changed into series operation by parallel running, it is five times of load currents that the sub-conductor electric current is increased, and reaches the purpose of the molten ice of on-load.When the icing strain section adopts six-multiple conductor, then can be by six-multiple conductor being divided into two tripartition current in wire loops, it is three times of load currents that the sub-conductor electric current is increased, and realizes the purpose of the molten ice of on-load.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100358859A CN101162831A (en) | 2007-10-12 | 2007-10-12 | Divided conductor powerline with loading ice melting scheme |
| CN2008800212718A CN101689757B (en) | 2007-10-12 | 2008-10-10 | Ice-melting device for bundle conductor transmission line and thereof method |
| PCT/CN2008/072650 WO2009049544A1 (en) | 2007-10-12 | 2008-10-10 | Ice-melting device for bundle conductor transmission line and thereof method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100358859A CN101162831A (en) | 2007-10-12 | 2007-10-12 | Divided conductor powerline with loading ice melting scheme |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101162831A true CN101162831A (en) | 2008-04-16 |
Family
ID=39297694
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100358859A Pending CN101162831A (en) | 2007-10-12 | 2007-10-12 | Divided conductor powerline with loading ice melting scheme |
| CN2008800212718A Expired - Fee Related CN101689757B (en) | 2007-10-12 | 2008-10-10 | Ice-melting device for bundle conductor transmission line and thereof method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800212718A Expired - Fee Related CN101689757B (en) | 2007-10-12 | 2008-10-10 | Ice-melting device for bundle conductor transmission line and thereof method |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN101162831A (en) |
| WO (1) | WO2009049544A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049544A1 (en) * | 2007-10-12 | 2009-04-23 | Lianggui Gong | Ice-melting device for bundle conductor transmission line and thereof method |
| CN101667722B (en) * | 2008-09-05 | 2011-07-20 | 唐翊程 | Method for melting ice and snow on power transmission and distribution lines by low voltage and high current |
| CN101409438B (en) * | 2008-07-25 | 2011-10-05 | 中国电力工程顾问集团西北电力设计院 | Ice-melting method suitable for transmission line with multiple fission conductor |
| CN103050918A (en) * | 2013-02-16 | 2013-04-17 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with four split sub-conductors by current |
| CN103050921A (en) * | 2013-02-16 | 2013-04-17 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with six split sub-conductors by current |
| CN103050922A (en) * | 2013-02-16 | 2013-04-17 | 重庆广仁铁塔制造有限公司 | Intelligent device for circularly melting ice on power transmission line with eleven split sub-conductors by current |
| CN103050917A (en) * | 2013-02-16 | 2013-04-17 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with twelve split sub-conductors by current |
| CN103094869A (en) * | 2013-02-16 | 2013-05-08 | 重庆广仁铁塔制造有限公司 | Electric transmission line current circulation intelligent ice melting device of five divided conductors |
| CN103337811A (en) * | 2013-07-24 | 2013-10-02 | 国家电网公司 | Reconstruction method for insulation between 220kV two-bundle power transmission line sub-conductors |
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| RU2522423C2 (en) * | 2010-07-21 | 2014-07-10 | Александр Васильевич Козлов | Mobile current generator for ice melting on wires of overhead transmission lines |
| CN106898985B (en) * | 2017-03-17 | 2024-02-06 | 国家电网公司 | Multifunctional electric power wire deicer |
| CN108874747A (en) * | 2018-05-31 | 2018-11-23 | 中国电力科学研究院有限公司 | A kind of method and system of determining transmission line galloping strength grade |
| CN109063360B (en) * | 2018-08-16 | 2022-10-04 | 四川大学 | Method for optimizing alternating-current heating parameters of self-heating transmission wire embedded with uniform material |
| CN109033689B (en) * | 2018-08-16 | 2022-09-13 | 四川大学 | Self-heating power transmission conductor uniform power design method based on direct-current heating power supply |
| CN109033690B (en) * | 2018-08-16 | 2022-10-11 | 四川大学 | Self-heating transmission conductor uniform power optimization method based on alternating-current heating power supply |
| CN108760527B (en) * | 2018-08-20 | 2023-10-13 | 四川大学 | On-line monitoring equipment and monitoring method for self-ice melting wire embedded with heating material |
| CN109390897B (en) * | 2018-12-12 | 2024-05-31 | 国网冀北电力有限公司电力科学研究院 | Overhead ground wire based on ground wire tension-resistant mode and ground wire tension-resistant insulator |
| CN109635440B (en) * | 2018-12-13 | 2023-06-27 | 国家电网公司西北分部 | Overhead transmission line icing flashover tripping probability calculation method |
| RU2699667C1 (en) * | 2018-12-29 | 2019-09-09 | Публичное Акционерное Общество "Электровыпрямитель" | External installation for glaze ice melting |
| CN109921365A (en) * | 2019-03-22 | 2019-06-21 | 扬州爱彼电力建设有限公司 | A kind of tripartition conductor spacer |
| CN110374390B (en) * | 2019-07-29 | 2024-02-06 | 中国能源建设集团湖南省电力设计院有限公司 | 500 KV vertical-arrangement double-circuit compact type 'NOT' type conversion strain tower |
| CN111767505B (en) * | 2020-05-19 | 2022-12-09 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for monitoring icing rate of tangent tower wire of power transmission line |
| CN111668786B (en) * | 2020-06-29 | 2024-06-04 | 中国电力工程顾问集团西南电力设计院有限公司 | Oblique pull rod jumper wire string capable of preventing wire tension string from inclining |
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| CN113701689B (en) * | 2021-07-26 | 2024-01-16 | 贵州电网有限责任公司 | Method and system for measuring equivalent icing thickness of tension tower power transmission line |
| CN115081807A (en) * | 2022-05-13 | 2022-09-20 | 华南理工大学 | Elasticity evaluation method for information physical fusion power transmission network under ice disaster |
| CN115498582B (en) * | 2022-10-21 | 2024-06-11 | 国网湖南省电力有限公司 | Uninterrupted ground wire direct-current deicing system and uninterrupted ground wire direct-current deicing method for ultra-high voltage transmission line |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01202110A (en) * | 1988-02-05 | 1989-08-15 | Hitachi Ltd | Ice and snow removing method for transmission line and its device |
| US6018152A (en) * | 1999-04-13 | 2000-01-25 | Allaire; Marc-Andre | Method and device for de-icing conductors of a bundle of conductors |
| CN200944519Y (en) * | 2006-08-29 | 2007-09-05 | 薛辉 | Automatic ice-melting device for transmission line |
| CN101162831A (en) * | 2007-10-12 | 2008-04-16 | 龚良贵 | Divided conductor powerline with loading ice melting scheme |
-
2007
- 2007-10-12 CN CNA2007100358859A patent/CN101162831A/en active Pending
-
2008
- 2008-10-10 CN CN2008800212718A patent/CN101689757B/en not_active Expired - Fee Related
- 2008-10-10 WO PCT/CN2008/072650 patent/WO2009049544A1/en active Application Filing
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009049544A1 (en) * | 2007-10-12 | 2009-04-23 | Lianggui Gong | Ice-melting device for bundle conductor transmission line and thereof method |
| CN101409438B (en) * | 2008-07-25 | 2011-10-05 | 中国电力工程顾问集团西北电力设计院 | Ice-melting method suitable for transmission line with multiple fission conductor |
| CN101667722B (en) * | 2008-09-05 | 2011-07-20 | 唐翊程 | Method for melting ice and snow on power transmission and distribution lines by low voltage and high current |
| CN103050917A (en) * | 2013-02-16 | 2013-04-17 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with twelve split sub-conductors by current |
| CN103050921A (en) * | 2013-02-16 | 2013-04-17 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with six split sub-conductors by current |
| CN103050922A (en) * | 2013-02-16 | 2013-04-17 | 重庆广仁铁塔制造有限公司 | Intelligent device for circularly melting ice on power transmission line with eleven split sub-conductors by current |
| CN103050918A (en) * | 2013-02-16 | 2013-04-17 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with four split sub-conductors by current |
| CN103094869A (en) * | 2013-02-16 | 2013-05-08 | 重庆广仁铁塔制造有限公司 | Electric transmission line current circulation intelligent ice melting device of five divided conductors |
| CN103050918B (en) * | 2013-02-16 | 2015-04-08 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with four split sub-conductors by current |
| CN103050917B (en) * | 2013-02-16 | 2015-04-29 | 重庆大学 | Intelligent device for circularly melting ice on power transmission line with twelve split sub-conductors by current |
| CN103094869B (en) * | 2013-02-16 | 2015-04-29 | 重庆广仁铁塔制造有限公司 | Electric transmission line current circulation intelligent ice melting device of five divided conductors |
| CN103050922B (en) * | 2013-02-16 | 2015-04-29 | 重庆广仁铁塔制造有限公司 | Intelligent device for circularly melting ice on power transmission line with eleven split sub-conductors by current |
| CN103337811A (en) * | 2013-07-24 | 2013-10-02 | 国家电网公司 | Reconstruction method for insulation between 220kV two-bundle power transmission line sub-conductors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101689757A (en) | 2010-03-31 |
| CN101689757B (en) | 2011-06-29 |
| WO2009049544A1 (en) | 2009-04-23 |
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