WO2015120725A1 - Lightning protection structure of overhead high voltage transmission line - Google Patents
Lightning protection structure of overhead high voltage transmission line Download PDFInfo
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- WO2015120725A1 WO2015120725A1 PCT/CN2014/087481 CN2014087481W WO2015120725A1 WO 2015120725 A1 WO2015120725 A1 WO 2015120725A1 CN 2014087481 W CN2014087481 W CN 2014087481W WO 2015120725 A1 WO2015120725 A1 WO 2015120725A1
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- conductor
- high voltage
- lightning protection
- protection structure
- transmission line
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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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/80—Discharge by conduction or dissipation, e.g. rods, arresters, spark gaps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
- H01T4/14—Arcing horns
Definitions
- the invention relates to the technical field of overhead high voltage transmission lines, and particularly relates to a novel lightning protection structure for overhead high voltage transmission lines.
- the wire is placed in the protection angle range of the lightning protection line, and the wire may be struck by lightning.
- lightning has many forms such as direct lightning strikes, lightning strikes, and lightning strikes. Even if the conductors are within the protection range of the lightning protection line, they are often attacked by lightning strikes or counter-thrusts, and lightning strikes in overhead high-voltage transmission lines. Accounted for a considerable proportion.
- the present invention is directed to the above problems, and aims to provide a new lightning protection structure for overhead high voltage transmission lines.
- the lightning protection structure can effectively avoid lightning accidents of overhead high voltage transmission lines, and can improve the anti-pollution and anti-ice flash levels of the lines and reduce the level.
- the height of the tower reduces the width of the corridor and saves the construction cost of the line.
- the present invention provides a novel lightning protection structure for an overhead high voltage transmission line, which is characterized in that it consists of a composite material cross arm, a live conductor, a ground conductor and a discharge gap h;
- the live conductor is a metal straight pipe and one end thereof Fixed to the tower, the grounding conductor is a metal straight control L shape and one end is fixed on the high voltage end fitting of the composite material cross arm, and the discharge gap h is formed between the suspended end of the charged conductor and the suspended end of the ground conductor, the composite material
- the cross arm, the ground conductor and the live conductor are on the same plane, the plane being parallel to the ground plane, or the high voltage end is inclined upward to an angle of not more than 30° with the ground plane.
- the novel lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the power frequency withstand voltage of the discharge gap h is not less than the power frequency withstand voltage of the composite material cross arm.
- the new lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the lightning impulse discharge voltage of the discharge gap h is not higher than the lightning impulse discharge voltage of the (1-3 ⁇ ) composite cross arm, and ⁇ is the standard deviation.
- the new lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the composite material cross arm axle The line and the lightning discharge gap h are parallel, and the angle with the ground plane is 0° to 30°.
- the novel lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the distance L between the composite cross arm shed and the discharge gap h is not less than 500 mm.
- the novel lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the grounding conductor and the charging conductor are made of a metal material, and the discharge end portion can be formed into a spherical shape, a tip shape or a needle shape.
- the new lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the bending load of the composite material cross arm is not less than twice the weight of the maximum ice coating of the wire; the bending deformation under normal load is less than 1% of the length.
- the present invention has the following advantages: the lightning protection structure is generally horizontally mounted on the pole tower or the high pressure end is installed obliquely upward, and the angle formed by the cross arm and the ground plane when the upward tilting installation is not higher than 30°.
- the self-cleaning and anti-icing performance of the insulator installed obliquely at a horizontal or small angle is superior to that of a vertically mounted insulator, which is less likely to cause contamination and ice flash, and can improve the safety of the transmission line.
- the wind bias is not formed like the suspension insulator, the width of the line corridor can be reduced, and the land acquisition cost of the line construction can be effectively reduced.
- the height of the tower is greatly reduced, and the tower is saved. Cost and basic costs.
- FIG. 1 is a structural view of a new lightning protection structure of an overhead high voltage transmission line of the present invention
- 1 composite material crossarm, 2-belt conductor, 3-ground conductor, 4-iron tower, 5-wire, h-discharge gap, H-crossarm length, L-discharge gap and the distance of the cross-armed shed.
- the novel lightning protection structure of the overhead high voltage transmission line is composed of a composite material cross body 1, a live conductor 2, a ground conductor 3 and a discharge gap h.
- the live conductor 2 is a metal straight pipe and one end thereof is fixed to the tower.
- the ground conductor 3 is a high-voltage end fitting having a metal straight control and an L shape and one end of which is fixed to the cross member 1 of the composite material.
- a discharge gap h is formed between the floating end of the charging conductor 2 and the floating end of the ground conductor 3.
- the composite cross member 1, the ground conductor 2 and the live conductor 3 are on the same plane, the plane being parallel to the ground plane, or the high pressure end is inclined upward to an angle of not more than 30° with the ground plane.
- the distance of the discharge gap h between the live conductor 2 and the ground conductor 3 is based on the actual running composite material Two technical parameters of the cross arm are determined. It should be satisfied: (1) The power frequency withstand voltage on the discharge gap h is not less than the power frequency withstand voltage of the composite crossarm 1; (2) The lightning impulse discharge voltage on the discharge gap h is not greater than (1-3 ⁇ ) composite Material cross-load lightning impulse discharge voltage ( ⁇ is the standard deviation).
- the cross-member 1 axis of the composite material is parallel to the lightning discharge gap h, and the angle with the ground plane is 0° to 30°.
- the distance L between the discharge gap h and the cross arm shed should be no less than 500 mm.
- the ground conductor 2 and the live conductor 3 are made of a metal material, and the discharge end portion can be formed into a spherical shape, a tip shape or a needle shape.
- the bending mechanical load of the composite crossarm 1 shall not be less than twice the weight of the maximum ice coating of the conductor.
- the maximum deformation of the composite crossarm shall not be less than horizontal. It takes 1% of the length H.
- the lightning protection structure is generally horizontally mounted on the pole tower or the high pressure end is installed obliquely upward, and the angle formed by the cross arm and the ground plane when the upward tilting installation is not higher than 30°.
- the self-cleaning and anti-icing performance of the insulator installed obliquely at a horizontal or small angle is superior to that of a vertically mounted insulator, which is less likely to cause contamination and ice flash, and can improve the safety of the transmission line.
- a new lightning protection structure for overhead high-voltage transmission lines is fabricated and assembled in the following order:
- a live conductor 3 is produced, and a ⁇ 100 mm metal ball is welded to one end of a ⁇ 30 mm metal tube. After bending to a right angle of 90° according to the required size, the other end is connected to the cross-member high-voltage end fitting of the composite material;
- the axis of the composite material cross member 1, the grounding conductor 2 and the charged conductor 3 are on the same plane, the plane is parallel to the ground plane, or the high voltage end is inclined upward and the ground plane is not higher than 30°. Angle.
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- Insulators (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
A lightning protection structure of an overhead high voltage transmission line, consisting of a composite material cross arm (1), an energized conductor (2), a grounding conductor (3) and a discharging gap h; the energized conductor (2) is a straight metal tube with one end being secured to a tower (4); the grounding conductor (3) is a straight metal tube formed into an L shape with one end being secured on a high voltage terminal fitting of the composite material cross arm (1); the discharging gap h is formed between a suspended end of the energized conductor (2) and a suspended end of the grounding conductor (3); the composite material cross arm (1), the grounding conductor (3) and the energized conductor (2) are on the same plane, the plane being parallel to the horizontal plane, or the high voltage end tilts upward to form an angle not greater than 30° with the horizontal plane. The lightning protection structure can effectively avoid lightning accidents caused to the overhead high voltage transmission line, improve anti-pollution flashover, anti-icing flashover levels of the line, decrease the height of the towers, and reduce the width of line corridor, thus saving line construction costs.
Description
本发明涉及架空高压输电线路技术领域，具体涉及一种架空高压输电线路新型防雷结构。The invention relates to the technical field of overhead high voltage transmission lines, and particularly relates to a novel lightning protection structure for overhead high voltage transmission lines.
现行的架空高压输电导线通常悬挂在固定于钢横担末端的悬式绝缘子串下端。通常，此种输电线路的防雷主要通过在距离导线一定距离的上空架设避雷线来实现。由于避雷线处在导线上方，绝大部分雷电都击中避雷线，从而保护导线免遭雷击。但我国大部分架空高压输电线路均处在地理环境较为复杂的环境中，运行工况较为复杂，可能导致避雷线无法有效保护导线遭受雷击，如大风吹拂引起避雷线与导线摆动方向或摆动幅度不一致，使导线摆出了避雷线的保护角度范围，导线便有可能遭到雷击。另外，雷电有直击雷、绕击雷、反击雷等多种形式，导线即使处在避雷线的保护范围内，也常常遭受到绕击雷或反击雷的袭击，架空高压输电线路事故中雷害占了相当大的比重。Current overhead high voltage transmission conductors are typically suspended at the lower end of a suspension insulator string that is fixed to the end of the steel crossarm. Generally, the lightning protection of such a transmission line is mainly achieved by arranging a lightning protection line at a certain distance from the wire. Since the lightning protection line is above the wire, most of the lightning strikes the lightning protection line, thus protecting the wire from lightning strikes. However, most of the overhead high-voltage transmission lines in China are located in a complex environment with complex environment. The operating conditions are complex, which may cause the lightning protection line to effectively protect the conductor from lightning strikes. For example, the wind-blown line causes the lightning-proof line to be inconsistent with the direction or swing of the wire. The wire is placed in the protection angle range of the lightning protection line, and the wire may be struck by lightning. In addition, lightning has many forms such as direct lightning strikes, lightning strikes, and lightning strikes. Even if the conductors are within the protection range of the lightning protection line, they are often attacked by lightning strikes or counter-thrusts, and lightning strikes in overhead high-voltage transmission lines. Accounted for a considerable proportion.
发明内容Summary of the invention
本发明针对上述问题，旨在提供一种架空高压输电线路新型防雷结构，本防雷结构能有效避免架空高压输电线路雷害事故，同时可提高线路的防污闪、防冰闪水平，减低杆塔高度，缩减线路走廊宽度，节省线路建设费用。The present invention is directed to the above problems, and aims to provide a new lightning protection structure for overhead high voltage transmission lines. The lightning protection structure can effectively avoid lightning accidents of overhead high voltage transmission lines, and can improve the anti-pollution and anti-ice flash levels of the lines and reduce the level. The height of the tower reduces the width of the corridor and saves the construction cost of the line.
为实现上述目的，本发明提供一种架空高压输电线路新型防雷结构，其特征在于，由复合材料横担、带电导体、接地导体和放电间隙h组成；带电导体为一金属直管且其一端固定于杆塔，接地导体为一金属直管制成为L形状且其一端固定于复合材料横担的高压端金具上，带电导体的悬空端和接地导体的悬空端之间即构成放电间隙h，复合材料横担、接地导体和带电导体处于同一平面上，该平面与地平面平行，或高压端向上倾斜与地平面成不高于30°的夹角。To achieve the above object, the present invention provides a novel lightning protection structure for an overhead high voltage transmission line, which is characterized in that it consists of a composite material cross arm, a live conductor, a ground conductor and a discharge gap h; the live conductor is a metal straight pipe and one end thereof Fixed to the tower, the grounding conductor is a metal straight control L shape and one end is fixed on the high voltage end fitting of the composite material cross arm, and the discharge gap h is formed between the suspended end of the charged conductor and the suspended end of the ground conductor, the composite material The cross arm, the ground conductor and the live conductor are on the same plane, the plane being parallel to the ground plane, or the high voltage end is inclined upward to an angle of not more than 30° with the ground plane.
如上所述的架空高压输电线路新型防雷结构，其特征在于，放电间隙h的工频耐受电压不小于复合材料横担的工频耐受电压。The novel lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the power frequency withstand voltage of the discharge gap h is not less than the power frequency withstand voltage of the composite material cross arm.
如上所述的架空高压输电线路新型防雷结构，其特征在于，放电间隙h的雷电冲击放电电压不高于(1-3δ)复合材料横担的雷电冲击放电电压，δ为标偏。The new lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the lightning impulse discharge voltage of the discharge gap h is not higher than the lightning impulse discharge voltage of the (1-3δ) composite cross arm, and δ is the standard deviation.
如上所述的架空高压输电线路新型防雷结构，其特征在于，复合材料横担轴
线和雷电放电间隙h平行，与地平面的夹角为0°～30°。The new lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the composite material cross arm axle
The line and the lightning discharge gap h are parallel, and the angle with the ground plane is 0° to 30°.
如上所述的架空高压输电线路新型防雷结构，其特征在于，复合材料横担伞裙与放电间隙h之间的距离L不小于500mm。The novel lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the distance L between the composite cross arm shed and the discharge gap h is not less than 500 mm.
如上所述的架空高压输电线路新型防雷结构，其特征在于，接地导体、带电导体由金属材料制成，其放电端部可制成球状、梢状或针状。The novel lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the grounding conductor and the charging conductor are made of a metal material, and the discharge end portion can be formed into a spherical shape, a tip shape or a needle shape.
如上所述的架空高压输电线路新型防雷结构，其特征在于，复合材料横担的弯曲负荷不低于导线最大覆冰后重量的2倍；正常负荷时弯曲变形量小于其长度的1％。The new lightning protection structure of the overhead high voltage transmission line as described above is characterized in that the bending load of the composite material cross arm is not less than twice the weight of the maximum ice coating of the wire; the bending deformation under normal load is less than 1% of the length.
本发明相对现有技术，具有以下优点：本防雷结构在杆塔上一般水平安装或高压端向上倾斜安装，向上倾斜安装时横担与地平面形成的夹角不高于30°。水平或小角度向上倾斜安装的绝缘子自洁和防覆冰性能优于垂直安装绝缘子，不易导致污秽和冰闪，可提高输电线路的安全性。此外，由于导线直接挂在复合材料横担端部，不会像悬式绝缘子那样形成风偏，可减小线路走廊宽度，有效降低线路建设的征地费用，同时，杆塔高度大幅降低，节省了杆塔造价及基础费用。Compared with the prior art, the present invention has the following advantages: the lightning protection structure is generally horizontally mounted on the pole tower or the high pressure end is installed obliquely upward, and the angle formed by the cross arm and the ground plane when the upward tilting installation is not higher than 30°. The self-cleaning and anti-icing performance of the insulator installed obliquely at a horizontal or small angle is superior to that of a vertically mounted insulator, which is less likely to cause contamination and ice flash, and can improve the safety of the transmission line. In addition, since the wire is directly hung on the cross-arm end of the composite material, the wind bias is not formed like the suspension insulator, the width of the line corridor can be reduced, and the land acquisition cost of the line construction can be effectively reduced. At the same time, the height of the tower is greatly reduced, and the tower is saved. Cost and basic costs.
图1是本发明架空高压输电线路新型防雷结构的结构图；1 is a structural view of a new lightning protection structure of an overhead high voltage transmission line of the present invention;
其中：1—复合材料横担、2—带电导体、3—接地导体、4—铁塔、5—导线、h—放电间隙、H—横担长度、L—放电间隙与横担伞裙的距离。Among them: 1—composite material crossarm, 2-belt conductor, 3-ground conductor, 4-iron tower, 5-wire, h-discharge gap, H-crossarm length, L-discharge gap and the distance of the cross-armed shed.
为了更好地理解本发明，下面结合实施例进一步阐明本发明的内容，但本发明的内容不仅仅局限于下面的实施例。本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样在本申请所列权利要求书限定范围之内。In order to better understand the present invention, the contents of the present invention will be further clarified below with reference to the embodiments, but the contents of the present invention are not limited to the following embodiments. A person skilled in the art can make various changes or modifications to the invention, and such equivalents are also within the scope of the appended claims.
如图1所示，本发明提供的架空高压输电线路新型防雷结构由复合材料横担1、带电导体2、接地导体3和放电间隙h组成。带电导体2为一金属直管且其一端固定于杆塔，接地导体3为一金属直管制成为L形状且其一端固定于复合材料横担1的高压端金具上。带电导体2的悬空端和接地导体3的悬空端之间即构成放电间隙h。复合材料横担1、接地导体2和带电导体3处于同一平面上，该平面与地平面平行，或高压端向上倾斜与地平面成不高于30°的夹角。As shown in FIG. 1, the novel lightning protection structure of the overhead high voltage transmission line provided by the present invention is composed of a composite material cross body 1, a live conductor 2, a ground conductor 3 and a discharge gap h. The live conductor 2 is a metal straight pipe and one end thereof is fixed to the tower. The ground conductor 3 is a high-voltage end fitting having a metal straight control and an L shape and one end of which is fixed to the cross member 1 of the composite material. A discharge gap h is formed between the floating end of the charging conductor 2 and the floating end of the ground conductor 3. The composite cross member 1, the ground conductor 2 and the live conductor 3 are on the same plane, the plane being parallel to the ground plane, or the high pressure end is inclined upward to an angle of not more than 30° with the ground plane.
带电导体2与接地导体3之间的放电间隙h的距离根据实际运行中复合材料
横担两个技术参数确定。应满足：(1)放电间隙h上的工频耐受电压不小于复合材料横担1的工频耐受电压；(2)放电间隙h上的雷电冲击放电电压不大于(1-3δ)复合材料横担雷电冲击放电电压(δ为标偏)。The distance of the discharge gap h between the live conductor 2 and the ground conductor 3 is based on the actual running composite material
Two technical parameters of the cross arm are determined. It should be satisfied: (1) The power frequency withstand voltage on the discharge gap h is not less than the power frequency withstand voltage of the composite crossarm 1; (2) The lightning impulse discharge voltage on the discharge gap h is not greater than (1-3δ) composite Material cross-load lightning impulse discharge voltage (δ is the standard deviation).
复合材料横担1轴线和雷电放电间隙h平行，与地平面的夹角为0°～30°。The cross-member 1 axis of the composite material is parallel to the lightning discharge gap h, and the angle with the ground plane is 0° to 30°.
为避免放电电弧烧伤复合材料横担伞裙，放电间隙h与横担伞裙的距离L应不小于500mm。In order to avoid the discharge arc burn composite cross arm shed, the distance L between the discharge gap h and the cross arm shed should be no less than 500 mm.
接地导体2、带电导体3由金属材料制成，其放电端部可制成球状、梢状或针状。The ground conductor 2 and the live conductor 3 are made of a metal material, and the discharge end portion can be formed into a spherical shape, a tip shape or a needle shape.
为保证放电间隙h的稳定和导线安全，复合材料横担1的弯曲机械负荷应不小于导线最大覆冰时重量的2倍，线路正常运行时，复合材料横担的最大变形量应不小于横担长度H的1％。In order to ensure the stability of the discharge gap h and the safety of the conductor, the bending mechanical load of the composite crossarm 1 shall not be less than twice the weight of the maximum ice coating of the conductor. When the line is in normal operation, the maximum deformation of the composite crossarm shall not be less than horizontal. It takes 1% of the length H.
本防雷结构在杆塔上一般水平安装或高压端向上倾斜安装，向上倾斜安装时横担与地平面形成的夹角不高于30°。水平或小角度向上倾斜安装的绝缘子自洁和防覆冰性能优于垂直安装绝缘子，不易导致污秽和冰闪，可提高输电线路的安全性。The lightning protection structure is generally horizontally mounted on the pole tower or the high pressure end is installed obliquely upward, and the angle formed by the cross arm and the ground plane when the upward tilting installation is not higher than 30°. The self-cleaning and anti-icing performance of the insulator installed obliquely at a horizontal or small angle is superior to that of a vertically mounted insulator, which is less likely to cause contamination and ice flash, and can improve the safety of the transmission line.
参照附图，按以下顺序制作和组装架空高压输电线路新型防雷结构：Referring to the drawings, a new lightning protection structure for overhead high-voltage transmission lines is fabricated and assembled in the following order:
(1)按一般复合材料横担生产方式，生产满足机械强度要求的复合材料横担；(1) According to the general composite material cross-arm production mode, the composite material cross-arm that meets the mechanical strength requirements is produced;
(2)制作带电导体3，在Φ30mm金属管的一端焊接Φ100mm金属球。根据所需尺寸弯成90°直角后，另一端与复合材料横担高压端金具相连；(2) A live conductor 3 is produced, and a Φ100 mm metal ball is welded to one end of a Φ30 mm metal tube. After bending to a right angle of 90° according to the required size, the other end is connected to the cross-member high-voltage end fitting of the composite material;
(3)制作接地导体2，在Φ30mm金属管的一端焊接Φ100mm金属球，金属管的另一端焊接连接座，连接座上设有用于与杆塔连接的螺栓孔；(3) making the grounding conductor 2, welding a Φ100mm metal ball at one end of the Φ30mm metal pipe, and welding the connecting seat at the other end of the metal pipe, and the bolting hole for connecting with the tower is arranged on the connecting seat;
(4)将复合材料横担接地端金属附件用螺栓连接到杆塔上，使其与地平面平行，或高压端向上倾斜与地平面成不高于30°的夹角，横担的高压端金属附件装上固定导线的船型线夹；(4) Bolt the metal joint of the composite material to the grounding end to be bolted to the pole tower so as to be parallel to the ground plane, or the high pressure end is inclined upward to form an angle of not more than 30° with the ground plane, and the high-voltage end metal of the cross arm Attachment to the ship type clamp for fixing the wire;
(5)将接地导体调整到与带电导体同一条直线上，并调整好两者之间的放电间隙h的距离，用螺栓将接地导体固定在杆塔上；(5) Adjust the grounding conductor to the same line as the live conductor, and adjust the distance of the discharge gap h between the two, and fix the grounding conductor to the pole with bolts;
(6)安装过程中，复合材料横担1、接地导体2和带电导体3的轴线处在同一平面上，该平面与地平面平行，或高压端向上倾斜与地平面成不高于30°的
夹角。(6) During the installation process, the axis of the composite material cross member 1, the grounding conductor 2 and the charged conductor 3 are on the same plane, the plane is parallel to the ground plane, or the high voltage end is inclined upward and the ground plane is not higher than 30°.
Angle.
以上仅为本发明的实施例而已，并不用于限制本发明，因此，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的权利要求范围之内。
The above are only the embodiments of the present invention, and are not intended to limit the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of the request.
Claims (7)
- 架空高压输电线路新型防雷结构，其特征在于，由复合材料横担(1)、带电导体(2)、接地导体(3)和放电间隙h组成；带电导体(2)为一金属直管且其一端固定于杆塔，接地导体(3)为一金属直管制成为L形状且其一端固定于复合材料横担(1)的高压端金具上，带电导体(2)的悬空端和接地导体(3)的悬空端之间即构成放电间隙h，复合材料横担(1)、接地导体(2)和带电导体(3)处于同一平面上，该平面与地平面平行，或高压端向上倾斜与地平面成不高于30°的夹角。A new lightning protection structure for overhead high voltage transmission lines, characterized in that it consists of a composite material cross arm (1), a live conductor (2), a ground conductor (3) and a discharge gap h; the live conductor (2) is a metal straight pipe and One end is fixed to the tower, and the grounding conductor (3) is a metal straight-lined L-shaped shape and one end is fixed on the high-voltage end fitting of the composite crossarm (1), the floating end of the charged conductor (2) and the grounding conductor (3) Between the suspended ends, the discharge gap h is formed, and the composite crossarm (1), the ground conductor (2) and the charged conductor (3) are on the same plane, the plane is parallel to the ground plane, or the high voltage end is inclined upwardly to the ground. The plane is at an angle not higher than 30°.
- 根据权利要求1所述的架空高压输电线路新型防雷结构，其特征在于，放电间隙h的工频耐受电压不小于复合材料横担(1)的工频耐受电压。A novel lightning protection structure for an overhead high voltage transmission line according to claim 1, wherein the power frequency withstand voltage of the discharge gap h is not less than the power frequency withstand voltage of the composite crossarm (1).
- 根据权利要求1所述的架空高压输电线路新型防雷结构，其特征在于，放电间隙h的雷电冲击放电电压不高于(1-3δ)复合材料横担(1)的雷电冲击放电电压，δ为标偏。A new lightning protection structure for an overhead high voltage transmission line according to claim 1, characterized in that the lightning impulse discharge voltage of the discharge gap h is not higher than the lightning impulse discharge voltage of the (1-3δ) composite crossarm (1), δ For the standard deviation.
- 根据权利要求1所述的架空高压输电线路新型防雷结构，其特征在于，复合材料横担(1)轴线和雷电放电间隙h平行，与地平面的夹角为0°～30°。The novel lightning protection structure for an overhead high voltage transmission line according to claim 1, wherein the cross member (1) of the composite material is parallel to the lightning discharge gap h, and the angle with the ground plane is 0° to 30°.
- 根据权利要求1所述的架空高压输电线路新型防雷结构，其特征在于，复合材料横担(1)伞裙与放电间隙h之间的距离L不小于500mm。The novel lightning protection structure for an overhead high voltage transmission line according to claim 1, characterized in that the distance L between the cross member of the composite material (1) and the discharge gap h is not less than 500 mm.
- 根据权利要求1所述的架空高压输电线路新型防雷结构，其特征在于，接地导体(2)、带电导体(3)由金属材料制成，其放电端部可制成球状、梢状或针状。A new lightning protection structure for an overhead high voltage transmission line according to claim 1, characterized in that the grounding conductor (2) and the charging conductor (3) are made of a metal material, and the discharge end portion can be made into a spherical shape, a tip shape or a needle. shape.
- 根据权利要求1所述的架空高压输电线路新型防雷结构，其特征在于，复合材料横担(1)的弯曲负荷不低于导线最大覆冰后重量的2倍；正常负荷时弯曲变形量小于其长度的1％。 The novel lightning protection structure for an overhead high voltage transmission line according to claim 1, wherein the bending load of the composite material cross arm (1) is not less than twice the weight of the maximum ice coating of the wire; the bending deformation under normal load is less than 1% of its length.
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| CN201410051705.6 | 2014-02-17 | ||
| CN201410051705.6A CN103872635B (en) | 2014-02-17 | 2014-02-17 | Aerial high-voltage power transmission line lightning protection structure |
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| CN110377925A (en) * | 2019-04-18 | 2019-10-25 | 国网吉林省电力有限公司吉林供电公司 | Transmission line of electricity lightening hazard differentiated lightning protection remodeling method |
| CN111666662A (en) * | 2020-05-22 | 2020-09-15 | 长沙理工大学 | Single-phase collinear installation method for parallel connection gap of 10kV overhead line |
| CN114059832A (en) * | 2021-12-21 | 2022-02-18 | 中国电力工程顾问集团西北电力设计院有限公司 | Single-loop lightning arrester linear tower for 500kV line engineering in high-altitude area |
| CN115017579A (en) * | 2022-05-30 | 2022-09-06 | 中国电力工程顾问集团西南电力设计院有限公司 | Load combination design method for alternating current-direct current mixed voltage suspension power transmission tower in light ice region |
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| Publication number | Publication date |
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| CN103872635A (en) | 2014-06-18 |
| CN103872635B (en) | 2016-04-06 |
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