CN101882775A - Composite material pole tower outside vertical grounding led-down method and pole tower thereof - Google Patents
Composite material pole tower outside vertical grounding led-down method and pole tower thereof Download PDFInfo
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- CN101882775A CN101882775A CN201010227950XA CN201010227950A CN101882775A CN 101882775 A CN101882775 A CN 101882775A CN 201010227950X A CN201010227950X A CN 201010227950XA CN 201010227950 A CN201010227950 A CN 201010227950A CN 101882775 A CN101882775 A CN 101882775A
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Abstract
The invention relates to a composite material pole tower outside vertical grounding led-down method and a pole tower thereof. In the invention, the extended line of one side of a ground wire cross arm is bridged with a section of upper meal cross arm of a grounding led-down wire, the grounding led-down wire is vertically led down at the tail end of the metal cross arm, the grounding led-down wire is connected on the pole tower via the lower metal cross arm of grounding led-down wire under a lower-phase conducting wire with a certain distance, and finally the grounding led-down wire is grounded along the tower body; and if the lower part of the tower body is a steel tube, the grounding led-down wire can be directly connected on the steel tube to be grounded via the lower metal cross arm of the grounding led-down wire. The invention is favorable for compressing the width of a transmission corridor to the maximum extent, is favorable for lightning protection design, avoids the short circuit between the grounding led-down wire and the composite material, plays the insulation function of the composite material tower body, and adopts a single-side grounding led-down wire so as to save more material and be economical, and the invention has simple structure and is easy to implement.
Description
Technical field
The present invention relates to a kind of method for vertical grounding led-down outside composite material pole tower and shaft tower thereof, belong to technology of transmission of electricity application in the electric power system.
Background technology
Shaft tower is the visual plant of transmission line, and the characteristic of its materials used directly has influence on fail safe, economy and the reliability of circuit operation.Because steel have the strength-weight ratio height, easily process and advantage such as installation, adopt all steel material shaft tower mostly in voltage levels at present both at home and abroad.But also there are defectives such as quality big (steel density is higher), easy-to-rust in all steel shaft tower, so need drop into bigger man power and material in shaft tower construction transportation and aspect safeguarding.And along with the development of composite material production technology and manufacturing process thereof, characteristics such as that composite material has is in light weight, intensity is big, corrosion-resistant, high-low temperature resistant, excellent in durability and insulating properties are strong, make composite material pole tower have cost of transportation low (particularly in meagrely-populated mountain area), advantage such as antifouling, anticorrosion, good application prospects is arranged.Adopted composite material pole tower in a large number in Canada, U.S. some areas at present.
When but Canada, the U.S. use composite material pole tower, do not consider the problem of lightning protection.Its main cause is that its circuit institute that adopts composite material pole tower is area with less lightning activities (owing to Canada, U.S. some areas are in winter throughout the year, these regional thunderstorm days are very little) through the area.In addition, it is the following electric pressure of 110kV mostly that Canada, the U.S. use the circuit of composite material pole tower, and these electric pressure systems are central point isolated neutral systems, and electric pressure is low, and lightning fault is little to the impact of system.
China's overhead line structures mainly adopt reinforcing bar to coagulate materials (110kV and above electric pressure circuit adopt all steel shaft tower usually) such as earth, timber, steel at present, because composite material pole tower has comparatively outstanding advantage, composite material pole tower (mostly in 110kV and above electric pressure) is also prepared in a lot of areas to use by China.Because these areas exist: problems such as the input in circuit corridor are big, lightening activity is intensive, filth is serious, so China is when using composite material pole tower, its main purpose is in compression transmission of electricity width of corridor (refer to reduce between transmission line wire maximum horizontal range), lightning protection (referring to reduce the lightning fault rate) and antifouling (referring to reduce power frequency pollution flashover failure rate by increase pollution flashover creepage distance) etc.
Composite material pole tower is faced with the problem of lightning protection just, so need construction of line lightning conducter (because problem Canadian, the U.S. does not consider lightning protection when adopting composite material pole tower, thereby do not set up lightning conducter), and the thunder and lightning energy when discharging thunderbolt lightning conducter (also claim " ground wire ") or cat head, to improve the counterattack lightning withstand level of circuit, reduce the lightning fault rate of circuit, need composite material pole tower to pursue tower ground connection.
Therefore, in the intensive area of lightening activity, the application of transmission line composite material pole tower exists the problem of ground connection under drawing, and (all steel shaft tower is because body of the tower is a metallic conductor, ground wire is just directly received the earth by body of the tower naturally, do not go to consider the problem of ground connection under drawing again so do not exist), under drawing, its ground connection has multiple diverse ways, grounding down-leading method will directly have influence on the lightning protection effect of composite material pole tower, but also have influence on the transmission of electricity width of corridor compression of circuit and antifouling etc., so the grounding down-leading method of composite material pole tower is to need the key technology and the difficult point that at first solve in its application.
Summary of the invention
In order to address the above problem, the invention provides a kind of method for vertical grounding led-down outside composite material pole tower and shaft tower thereof, this invention can be given full play to the insulating effect of composite material pole tower body of the tower, makes composite material pole tower embody its value and advantage aspect transmission of electricity width of corridor compression, lightning protection and the electric property such as antifouling.
Technical scheme of the present invention is: a kind of method for vertical grounding led-down outside composite material pole tower, it is characterized in that: on certain one side extended line of ground wire cross-arm, set up metal cross arm on one section down conductor, end in this metal cross arm vertically draws down conductor down, this down conductor below following phase conductor certain distance by the down conductor of correspondence under metal cross arm be connected on the shaft tower, last down conductor is along body of the tower ground connection, if the body of the tower lower part is a steel pipe, down conductor can directly be connected in ground connection on the steel pipe by metal cross arm under the down conductor.
Aforesaid a kind of method for vertical grounding led-down outside composite material pole tower, it is characterized in that: set up metal cross arm on two sections down conductors on the extended line of the limit, both sides of ground wire cross-arm, the end of metal cross arm vertically draws following two down conductors on these two sections down conductors simultaneously.
Aforesaid a kind of method for vertical grounding led-down outside composite material pole tower, it is characterized in that: can support with insulating bar or composite insulator between down conductor and composite material pole tower, guarantee that down conductor bears the strong wind iso-stress and does the time spent and bigger flexural deformation can not take place in running.
The composite material pole tower of the vertical ground connection in a kind of outside, it is characterized in that: on certain one side extended line of ground wire cross-arm, set up metal cross arm on one section down conductor, end in this metal cross arm vertically draws down conductor down, this down conductor below following phase conductor certain distance by the down conductor of correspondence under metal cross arm be connected on the shaft tower, last down conductor is along body of the tower ground connection, if the body of the tower lower part is a steel pipe, down conductor can directly be connected in ground connection on the steel pipe by metal cross arm under the down conductor.
The composite material pole tower of the vertical ground connection in the aforesaid outside, it is characterized in that: set up metal cross arm on two sections down conductors on the extended line of the limit, both sides of ground wire cross-arm, the end of metal cross arm vertically draws following two down conductors on these two sections down conductors simultaneously.
The composite material pole tower of the vertical ground connection in the aforesaid outside is characterized in that: the support component of down conductor and composite material pole tower is insulating bar or composite insulator.
The invention has the beneficial effects as follows:
(1) is beneficial to compression transmission of electricity width of corridor.The transmission of electricity width of corridor of circuit affects alternate lightning stroke flashover trip-out rate or two times while tripping rate with lightning strike of circuit.
(2) be beneficial to lightning Protection Design.Can come lead of control circuit lightning impulse dielectric strength over the ground by the minimum clearance distance of regulating between down conductor and nearside lead, control trip-out rate single time with this, be uneven insulation because the monolateral grounding down-leading formula of this kind makes again, circuit two return simultaneously that tripping rate with lightning strike have obtained reducing greatly twice of circuit.
(3) avoid down conductor short circuit composite material pole tower body of the tower, brought into play the insulating effect of composite material body of the tower, made lead creepage distance over the ground strengthen, strengthened the ability of its pollution flashover of anti-the power frequency;
When (4) having avoided down conductor to move on the ground, to the inconvenience influence of life;
(5) because circuit has adopted monolateral down conductor, economize material, economy more;
(6) features simple structure is easy to realize.
Description of drawings
Fig. 1 is the front view of monolateral down conductor in the embodiment of the invention.
Fig. 2 is the front view of monolateral down conductor in the embodiment of the invention.
Fig. 3 is the front view of bilateral down conductor in the embodiment of the invention.
Fig. 4 is the front view of bilateral down conductor in the embodiment of the invention.
Embodiment
Fig. 1, description of symbols in 3: 1-ground wire cross-arm, metal cross arm on the 2-down conductor, the 3-down conductor, metal cross arm under the 4-down conductor, 5-composite insulator, 6-cross-arm gold utensil, the body of the tower part of 7-tower head, 8-ground wire, 9-nearside lead, 10-distally lead, phase conductor under the 11-, 12-body of the tower lower part, 13-body of the tower lower part.
On certain one side extended line of ground wire cross-arm 1, set up metal cross arm 2 on one section down conductor among the present invention, down conductor 3 under the end of this metal cross arm 2 vertically draws, down conductor 3 is D with the minimum air void distance of nearside lead
1(D
1Value calculate to be determined by lightning protection)), this down conductor 3 below phase conductor down certain distance by the down conductor of correspondence under metal cross arm 4 be connected on the shaft tower
When setting up two sections down conductors, (wherein the length of left side down conductor is D drawing metal cross arm 2 on two sections down conductors on the extended line of both sides with ground wire cross-arm 1
1, the length of the right down conductor is D
2, D
1And D
2Value calculate to determine by lightning protection), the end of metal cross arm 2 vertically draws two down conductors 3 down on these two sections down conductors, this two down conductor 3 is certain distance D below phase conductor 12 down
3Be connected on the shaft tower by metal cross arm 4 under other two down conductors of correspondence.
Because the body of the tower of tower head partly adopts the composite material of insulation, the circuit width of corridor is not controlled by insulating requirements relatively, and the control that required by the two lead phase insulations etc. of same level height, therefore, the circuit width of corridor can greatly reduce.Because down conductor does not pass through body of the tower, has avoided down conductor short circuit composite material pole tower body of the tower, has brought into play the insulating effect of composite material body of the tower, make lead creepage distance over the ground strengthen, strengthened the ability of its pollution flashover of anti-the power frequency.
The present invention can also be according to the rule of circuit location lightening activity, by adjusting D
1And D
2Length adjust minimum air void distance between down conductor and nearside lead, with this tripping rate with lightning strike that comes the control circuit list to return, circuit two return that trip-out rates are relevant with the width of corridor of circuit simultaneously.
Two down conductors 3 under vertically drawing are connected under the down conductor after the metal cross arm 4, down conductor 3 inserts the earth along body of the tower, if being tower head, composite material pole tower uses composite material and the remaining part steel pipe, as long as metal cross arm 4 is the steel pipes that are fixed on remaining part under the down conductor, just can directly insert the earth by the steel pipe body of the tower, thereby when having avoided down conductor 3 directly vertically to move on the ground, to the inconvenience influence of life.
On the down conductor under metal cross arm 2 and the down conductor metal cross arm 4 also played the effect of the down conductor 3 under stay bolt vertically draws, make down conductor 3 under the effect of strong wind iso-stress, bigger flexural deformation can not take place, down conductor 3 should adopt higher, the on-deformable electric conductor of intensity, if in order further to guarantee down conductor 3 not flexural deformations, can add the supports insulative bar two down conductors 3 and composite material pole tower support are come; Also can add support composite insulator 5 on the lead cross-arm comes two down conductors 3 and lead support.
Generally speaking, this composite material pole tower grounding down-leading formula structure intuitively, simply clear, be easy to realize.With respect to the bilateral down conductor that draws, adopted monolateral down conductor, economize material, economy more.But, adopting monolateral down conductor, its circuit width of corridor is subjected to two restrictions of trip-out rate simultaneously of returning, unsuitable limit compression.
Claims (4)
1. method for vertical grounding led-down outside composite material pole tower, it is characterized in that: set up metal cross arm on one section down conductor on one side or on the extended line of both sides in certain of ground wire cross-arm, end in each metal cross arm vertically draws down conductor down, down conductor below following phase conductor certain distance by the down conductor of correspondence under metal cross arm be connected on the shaft tower, last down conductor is along body of the tower ground connection, if the body of the tower lower part is a steel pipe, down conductor can directly be connected in ground connection on the steel pipe by metal cross arm under the down conductor.
2. a kind of method for vertical grounding led-down outside composite material pole tower according to claim 1, it is characterized in that: support with insulating bar or composite insulator between down conductor and composite material pole tower, guarantee that down conductor bears the strong wind iso-stress and does the time spent and bigger flexural deformation can not take place in running.
3. the composite material pole tower of the vertical ground connection in the outside, it is characterized in that: set up metal cross arm on one section down conductor on one side or on the extended line of both sides in certain of ground wire cross-arm, end in each metal cross arm vertically draws down conductor down, down conductor below following phase conductor certain distance by the down conductor of correspondence under metal cross arm be connected on the shaft tower, last down conductor is along body of the tower ground connection, if the body of the tower lower part is a steel pipe, down conductor directly is connected in ground connection on the steel pipe by metal cross arm under the down conductor.
4. the composite material pole tower of the vertical ground connection in the outside according to claim 3 is characterized in that: support with insulating bar or composite insulator between down conductor and composite material pole tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010227950XA CN101882775B (en) | 2009-09-08 | 2010-07-15 | Composite material pole tower outside vertical grounding led-down method and pole tower thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910063896A CN101692547A (en) | 2009-09-08 | 2009-09-08 | Vertically grounding down-leading method for external side of composite material tower and tower thereof |
| CN200910063896.7 | 2009-09-08 | ||
| CN201010227950XA CN101882775B (en) | 2009-09-08 | 2010-07-15 | Composite material pole tower outside vertical grounding led-down method and pole tower thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101882775A true CN101882775A (en) | 2010-11-10 |
| CN101882775B CN101882775B (en) | 2012-11-07 |
Family
ID=42081211
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910063896A Withdrawn CN101692547A (en) | 2009-09-08 | 2009-09-08 | Vertically grounding down-leading method for external side of composite material tower and tower thereof |
| CN201020258168XU Expired - Lifetime CN201789257U (en) | 2009-09-08 | 2010-07-15 | Composite material tower of outside vertical grounded downlead |
| CN201010227950XA Active CN101882775B (en) | 2009-09-08 | 2010-07-15 | Composite material pole tower outside vertical grounding led-down method and pole tower thereof |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910063896A Withdrawn CN101692547A (en) | 2009-09-08 | 2009-09-08 | Vertically grounding down-leading method for external side of composite material tower and tower thereof |
| CN201020258168XU Expired - Lifetime CN201789257U (en) | 2009-09-08 | 2010-07-15 | Composite material tower of outside vertical grounded downlead |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN101692547A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383639A (en) * | 2011-08-19 | 2012-03-21 | 国网电力科学研究院 | Compactly structured pole tower |
| CN103427364A (en) * | 2013-07-23 | 2013-12-04 | 国家电网公司 | Telegraph pole mis-operation prevention method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692547A (en) * | 2009-09-08 | 2010-04-07 | 国网电力科学研究院 | Vertically grounding down-leading method for external side of composite material tower and tower thereof |
| CN102312597B (en) * | 2010-07-02 | 2015-09-23 | 国家电网公司 | Multifunctional composite material rod tower |
| CN102312605B (en) * | 2011-04-07 | 2013-01-23 | 济南巨能铁塔制造有限公司 | Square cross arm |
| CN103457044B (en) * | 2013-07-26 | 2015-08-05 | 广东电网公司佛山供电局 | The earthing device of 10kV distribution network overhead line tower pole and laying method thereof |
| CN104518475B (en) * | 2013-09-28 | 2017-04-05 | 成都星河科技产业有限公司 | A kind of distribution Integrated Lightning protection System |
| CN104006721B (en) * | 2014-06-13 | 2017-01-11 | 中车长江车辆有限公司 | Bearing axial play measuring method |
| CN109001606A (en) * | 2018-09-30 | 2018-12-14 | 国网湖南省电力有限公司 | The test model and application method of a kind of alternate electric discharge of transmission line simulation |
| CN109236588A (en) * | 2018-11-15 | 2019-01-18 | 吉林市简通电气科技有限公司 | It is a kind of based on the standby shocking preventing technology stealthy to thunder and lightning of uniform electric field theory field bands Denso |
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|---|---|---|---|---|
| JP2006296113A (en) * | 2005-04-12 | 2006-10-26 | Chugoku Electric Power Co Inc:The | Utility pole and grounding method |
| US20080011500A1 (en) * | 2006-07-13 | 2008-01-17 | Beckwith Robert W | Lightning grounding towers as used in sytems for inducing lightning to eliminate hurricanes |
| CN101237135A (en) * | 2007-01-30 | 2008-08-06 | 唐翊程 | Air ground line downward link and method for ground line assembly |
| CN101692547A (en) * | 2009-09-08 | 2010-04-07 | 国网电力科学研究院 | Vertically grounding down-leading method for external side of composite material tower and tower thereof |
| CN101752819A (en) * | 2010-01-28 | 2010-06-23 | 国网电力科学研究院 | Method for vertical grounding led-down outside composite material pole tower and pole tower thereof |
-
2009
- 2009-09-08 CN CN200910063896A patent/CN101692547A/en not_active Withdrawn
-
2010
- 2010-07-15 CN CN201020258168XU patent/CN201789257U/en not_active Expired - Lifetime
- 2010-07-15 CN CN201010227950XA patent/CN101882775B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006296113A (en) * | 2005-04-12 | 2006-10-26 | Chugoku Electric Power Co Inc:The | Utility pole and grounding method |
| US20080011500A1 (en) * | 2006-07-13 | 2008-01-17 | Beckwith Robert W | Lightning grounding towers as used in sytems for inducing lightning to eliminate hurricanes |
| CN101237135A (en) * | 2007-01-30 | 2008-08-06 | 唐翊程 | Air ground line downward link and method for ground line assembly |
| CN101692547A (en) * | 2009-09-08 | 2010-04-07 | 国网电力科学研究院 | Vertically grounding down-leading method for external side of composite material tower and tower thereof |
| CN201789257U (en) * | 2009-09-08 | 2011-04-06 | 国网电力科学研究院 | Composite material tower of outside vertical grounded downlead |
| CN101752819A (en) * | 2010-01-28 | 2010-06-23 | 国网电力科学研究院 | Method for vertical grounding led-down outside composite material pole tower and pole tower thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383639A (en) * | 2011-08-19 | 2012-03-21 | 国网电力科学研究院 | Compactly structured pole tower |
| CN103427364A (en) * | 2013-07-23 | 2013-12-04 | 国家电网公司 | Telegraph pole mis-operation prevention method |
| CN103427364B (en) * | 2013-07-23 | 2016-06-01 | 国家电网公司 | A kind of telegraph pole mis-operation prevention |
Also Published As
| Publication number | Publication date |
|---|---|
| CN201789257U (en) | 2011-04-06 |
| CN101692547A (en) | 2010-04-07 |
| CN101882775B (en) | 2012-11-07 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN POWER SUPPLY BUREAU OF GUANGDONG POWER GR Effective date: 20120426 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120426 Address after: Nanjing City, Jiangsu Province, 210003 South Shui Road No. 8 Applicant after: State Grid Electric Power Research Insititute Co-applicant after: Shenzhen Power Supply Bureau of Guangdong Power Grid Corporation Address before: Nanjing City, Jiangsu Province, 210003 South Shui Road No. 8 Applicant before: State Grid Electric Power Research Insititute |
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