CN101964507B - Central vertical grounding leading-down method for composite pole tower and pole tower thereof - Google Patents
Central vertical grounding leading-down method for composite pole tower and pole tower thereof Download PDFInfo
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- CN101964507B CN101964507B CN2010102266942A CN201010226694A CN101964507B CN 101964507 B CN101964507 B CN 101964507B CN 2010102266942 A CN2010102266942 A CN 2010102266942A CN 201010226694 A CN201010226694 A CN 201010226694A CN 101964507 B CN101964507 B CN 101964507B
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Abstract
The invention relates to a central vertical grounding leading-down method for a composite pole tower and the pole tower thereof. An earth wire cross arm is made of metal material, a grounded leading-down wire is led out of the center of the earth wire cross arm, and the grounded leading-down wire is vertically led down from the right center of the composite pole tower and connected to the ground; and if the lower part of a tower body is provided with a steel pipe, the grounded leading-down wire can be directly connected on the steel pipe and grounded. By using the insulating strength of the tower wall of the composite pole tower, the lightning surge resistant insulating strength of a circuit is enhanced, the grounded leading-down wire is prevented from being short-circuited with the tower body of the composite pole tower, and the insulating effect of the composite tower body is exerted; and because the grounded leading-down wire passes through the inner side of the pole tower, the grounded leading-down wire exposed outside is prevented from being damaged by external force such as strong wind and the like, the pole tower has a simple structure, and the method is easy to implement.
Description
Technical field
The present invention relates to a kind of composite material pole tower center vertical grounding down leading method 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, be prone to advantages such as processing and installation, adopt all steel material steel pole tower both at home and abroad at present mostly.But also there are defectives such as quality big (steel density is higher), easy-to-rust in all steel shaft tower, so need bigger man power and material to drop 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), antifouling, advantage such as antiseptic property is good, its application prospect is very optimistic.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 to reduce transmit electricity width of corridor, lightning protection (referring to reduce the lightning fault rate) and antifouling (referring to reduce power frequency pollution flashover failure rate through increasing the 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 claiming " 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; 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 through body of the tower naturally; So there be not the problem of ground connection under drawing), under drawing, its ground connection has multiple diverse ways, and grounding down-leading method will directly have influence on the lightning protection effect of composite material pole tower; But also have influence on the antifouling of circuit and reduce the width of corridor etc. of transmitting electricity, so the grounding down-leading method of composite material pole tower is key technology and the difficult point that needs at first solution in its application.
Summary of the invention
In order to address the above problem; The invention provides a kind of composite material pole tower center vertical grounding down leading method 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 at aspects such as antifouling, lightning protection and burn-out proof composite insulators.
Technical scheme of the present invention is: a kind of composite material pole tower center vertical grounding down leading method; It is characterized in that: the ground wire cross-arm of head of mast adopts metal material; Down conductor is drawn at center at the ground wire cross-arm; Down conductor vertically draws from the centermost of composite material pole tower and inserts down the earth, or when the body of the tower lower part is steel pipe, and down conductor directly is connected in body of the tower lower part steel pipe from the centermost of composite material pole tower and comes ground connection.
Aforesaid a kind of composite material pole tower center vertical grounding down leading method is characterized in that: on down conductor, add one deck insulating material and strengthen the insulation of lead to down conductor.
Aforesaid a kind of composite material pole tower center vertical grounding down leading method is characterized in that: composite insulator is housed on the shaft tower, and the link of connection and support composite insulator is processed by insulating material.
Aforesaid a kind of composite material pole tower center vertical grounding down leading method is characterized in that: the body of the tower partial fixing at the shaft tower tower head has a plurality of flashover points, and the position of each flashover point is the certain distance below corresponding each phase conductor respectively.
A kind of composite material pole tower of ground connection; It is characterized in that: the ground wire cross-arm of head of mast adopts metal material; Down conductor is drawn at center at the ground wire cross-arm; Down conductor vertically draws from the centermost of composite material pole tower and inserts down the earth, or when the body of the tower lower part is steel pipe, and down conductor directly is connected in body of the tower lower part steel pipe from the centermost of composite material pole tower and comes ground connection.
The composite material pole tower of aforesaid ground connection is characterized in that: outside down conductor, coat one deck insulating material.
The composite material pole tower of aforesaid ground connection is characterized in that: the link that composite insulator connection and support composite insulator are housed on the shaft tower is an insulating material.
The composite material pole tower of aforesaid ground connection is characterized in that: the body of the tower partial fixing of shaft tower tower head has a plurality of flashover points, and the position of each flashover point is the certain distance below corresponding each phase conductor respectively.
The invention has the beneficial effects as follows:
(1) utilizes the dielectric strength of composite material pole tower tower wall, thereby strengthened the dielectric strength of the anti-lightning impulse of circuit;
(2) setting up flashover point can be so that during the circuit lightning stroke flashover, flashover path be by lead to the discharge of flashover point, thereby when preventing the circuit lightning stroke flashover to scaling loss, the destruction of composite material pole tower tower wall;
(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;
(4) if add one deck insulating material on the down conductor, and use insulating material to do the link that connects and support composite insulator, can strengthen lead insulation distance over the ground, further strengthened the anti-lightning impulse dielectric strength of circuit;
(5) avoided the inconvenience influence of down conductor to life;
(6) avoid down conductor to be exposed to the outside and received damage of external force such as strong wind, simple in structure, be easy to realize.
Description of drawings
Fig. 1 is the vertical view of the embodiment of the invention.
Fig. 2 is the front view that the embodiment of the invention does not have flashover point.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the front view that the embodiment of the invention has flashover point.
Fig. 5 is the partial enlarged drawing at the flashover point place of Fig. 4.
Embodiment
Description of symbols among Fig. 1,2,4: 1----ground wire cross-arm, 2-down conductor, 3-down conductor insulated cladding; 4-composite material pole tower tower wall insulating barrier, 5-composite insulator, the connection of 6-composite insulator and support component, the body of the tower part of 7-tower head; 8-body of the tower lower part, 9-ground wire, 10-upward phase conductors, 11-middle phase conductor; 12-following phase conductor, 13-flashover point, 14-flashover point and down conductor electric connecting part.
Ground wire cross-arm 1 among the present invention adopts metal material; Draw down conductor 2 at the center of ground wire cross-arm 1; Down conductor 2 vertically draws access the earth down from the centermost of composite material pole tower, if body of the tower lower part 8 is steel pipes, down conductor 2 can directly be connected in ground connection on the steel pipe.
Because the body of the tower part 7 of shaft tower tower head is to adopt composite material; Has certain dielectric strength; Down conductor 2 vertically draws down from the inside, center of shaft tower; Can utilize the dielectric strength of body of the tower composite material tower wall, thereby strengthen the dielectric strength of the anti-lightning impulse of circuit, the effect of enhancing is relevant with the material of composite material and size.Also, have certain dielectric strength, thereby avoided down conductor 2 short circuit composite material pole tower bodies of the tower, make lead creepage distance over the ground strengthen, strengthened the ability of its pollution flashover of anti-the power frequency just because the body of the tower part 7 of shaft tower tower head adopts composite material.
Setting up its main purpose of flashover point and effect is: can be so that during the circuit lightning stroke flashover, and flashover path is by lead flashover point to be discharged; Thereby when preventing the circuit lightning stroke flashover to scaling loss, the destruction of composite material pole tower tower wall.The position of flashover point 13 certain distance below each phase conductor; On the dielectric strength of its position and shaft tower tower wall, the down conductor to add the factors such as dielectric strength of insulating material that link adopts of dielectric strength, connection and support composite insulator of insulating barrier relevant; The choice of location of flashover point main one is to make lead big to the distance of flashover point as far as possible; The 2nd, in the time of guaranteeing impulse flashover takes place, be that lead comes down conductor is discharged to discharge of flashover point rather than puncture shaft tower tower wall.
If parcel one deck insulating material on the down conductor 2, and use insulating material to do the connection and the support component 6 of composite insulator, can strengthen lead insulation distance over the ground, further strengthened the anti-lightning impulse dielectric strength of circuit.
Because down conductor 2 vertically draws down from the inside, composite material pole tower center, receive damage of external force such as strong wind so avoided down conductor 2 to be exposed to the outside, and avoided down conductor 2 to move on the ground, the inconvenience influence of life.
This composite material pole tower grounding down-leading formula structure intuitively, simply clear, be easy to realize.
Claims (8)
1. composite material pole tower center vertical grounding down leading method; It is characterized in that: the ground wire cross-arm of head of mast adopts metal material; Down conductor is drawn at center at the ground wire cross-arm; Down conductor vertically draws from the centermost of composite material pole tower and inserts down the earth, or when the body of the tower lower part is steel pipe, and down conductor directly is connected in body of the tower lower part steel pipe from the centermost of composite material pole tower and comes ground connection.
2. a kind of composite material pole tower according to claim 1 center vertical grounding down leading method is characterized in that: on down conductor, add one deck insulating material and strengthen the insulation of lead to down conductor.
3. a kind of composite material pole tower according to claim 1 center vertical grounding down leading method is characterized in that: composite insulator is housed on the shaft tower, and the link of connection and support composite insulator is processed by insulating material.
4. a kind of composite material pole tower according to claim 1 center vertical grounding down leading method; It is characterized in that: the body of the tower partial fixing at the shaft tower tower head has a plurality of flashover points, and the position of each flashover point is the certain distance below corresponding each phase conductor respectively.
5. the composite material pole tower of a ground connection; It is characterized in that: the ground wire cross-arm of head of mast adopts metal material; Down conductor is drawn at center at the ground wire cross-arm; Down conductor vertically draws from the centermost of composite material pole tower and inserts down the earth, or when the body of the tower lower part is steel pipe, and down conductor directly is connected in body of the tower lower part steel pipe from the centermost of composite material pole tower and comes ground connection.
6. the composite material pole tower of ground connection according to claim 5 is characterized in that: outside down conductor, coat one deck insulating material.
7. according to the composite material pole tower of claim 5 or 6 described ground connection, it is characterized in that: composite insulator is housed on the shaft tower, and the link of connection and support composite insulator is processed by insulating material.
8. according to the composite material pole tower of claim 5 or 6 described ground connection, it is characterized in that: the body of the tower partial fixing of shaft tower tower head has a plurality of flashover points, and the position of each flashover point is the certain distance below corresponding each phase conductor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102266942A CN101964507B (en) | 2009-09-08 | 2010-07-15 | Central vertical grounding leading-down method for composite pole tower and pole tower thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910063895.2 | 2009-09-08 | ||
| CN200910063895A CN101692546A (en) | 2009-09-08 | 2009-09-08 | Vertically grounding down-leading method for center of composite material tower and tower thereof |
| CN2010102266942A CN101964507B (en) | 2009-09-08 | 2010-07-15 | Central vertical grounding leading-down method for composite pole tower and pole tower thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101964507A CN101964507A (en) | 2011-02-02 |
| CN101964507B true CN101964507B (en) | 2012-11-07 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910063895A Withdrawn CN101692546A (en) | 2009-09-08 | 2009-09-08 | Vertically grounding down-leading method for center of composite material tower and tower thereof |
| CN2010102266942A Active CN101964507B (en) | 2009-09-08 | 2010-07-15 | Central vertical grounding leading-down method for composite pole tower and pole tower thereof |
| CN2010202585746U Expired - Lifetime CN201854001U (en) | 2009-09-08 | 2010-07-15 | Composite tower with vertical grounding down wire in center |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910063895A Withdrawn CN101692546A (en) | 2009-09-08 | 2009-09-08 | Vertically grounding down-leading method for center of composite material tower and tower thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202585746U Expired - Lifetime CN201854001U (en) | 2009-09-08 | 2010-07-15 | Composite tower with vertical grounding down wire in center |
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| Country | Link |
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| CN (3) | CN101692546A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563580A (en) * | 2013-10-15 | 2015-04-29 | 北京玻钢院复合材料有限公司 | Insulation pole tower for power transmission and distribution line and manufacturing method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8859895B2 (en) * | 2009-09-08 | 2014-10-14 | State Grid Electric Power Research Institute | Method for vertically grounding and leading down from center of composite pole tower and pole tower thereof |
| CN101692546A (en) * | 2009-09-08 | 2010-04-07 | 国网电力科学研究院 | Vertically grounding down-leading method for center 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 |
| CN103452370B (en) * | 2012-10-25 | 2015-12-16 | 江苏神马电力股份有限公司 | Power grid transmission line complex pole tower and compound cross-arm structure thereof |
| CN112727711A (en) * | 2021-01-04 | 2021-04-30 | 株洲时代新材料科技股份有限公司 | Lightning protection device for wind driven generator blade |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237135A (en) * | 2007-01-30 | 2008-08-06 | 唐翊程 | Air ground line downward link and method for ground line assembly |
| CN101692546A (en) * | 2009-09-08 | 2010-04-07 | 国网电力科学研究院 | Vertically grounding down-leading method for center of composite material tower and tower thereof |
| CN101728804A (en) * | 2010-01-28 | 2010-06-09 | 国网电力科学研究院 | Central vertical grounding drop method of composite pole tower and pole tower thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03235612A (en) * | 1990-02-07 | 1991-10-21 | Chubu Electric Power Co Inc | Lightning current shunting device for transmission steel tower |
-
2009
- 2009-09-08 CN CN200910063895A patent/CN101692546A/en not_active Withdrawn
-
2010
- 2010-07-15 CN CN2010102266942A patent/CN101964507B/en active Active
- 2010-07-15 CN CN2010202585746U patent/CN201854001U/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237135A (en) * | 2007-01-30 | 2008-08-06 | 唐翊程 | Air ground line downward link and method for ground line assembly |
| CN101692546A (en) * | 2009-09-08 | 2010-04-07 | 国网电力科学研究院 | Vertically grounding down-leading method for center of composite material tower and tower thereof |
| CN201854001U (en) * | 2009-09-08 | 2011-06-01 | 国网电力科学研究院 | Composite tower with vertical grounding down wire in center |
| CN101728804A (en) * | 2010-01-28 | 2010-06-09 | 国网电力科学研究院 | Central vertical grounding drop method of composite pole tower and pole tower thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP平3-235612A 1991.10.21 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563580A (en) * | 2013-10-15 | 2015-04-29 | 北京玻钢院复合材料有限公司 | Insulation pole tower for power transmission and distribution line and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN201854001U (en) | 2011-06-01 |
| CN101964507A (en) | 2011-02-02 |
| CN101692546A (en) | 2010-04-07 |
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