Anti-corona sphere for power transmission line in high altitude region
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A technology for transmission lines and anti-corona balls, applied in the installation of cables, electrical components, overhead installation, etc., can solve the problems of limited improvement effect, and achieve the effect of simple structure, light material, and inhibition of corona discharge phenomenon.
Active Publication Date: 2012-01-04
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology
[0008] The above-mentioned technologies are mainly the improvement of the hardware structure, and the improvement effect is limited
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Embodiment 1
[0033] The overall appearance of the anti-halation ball is spherical, the interior is hollow, and it is made of aluminum alloy, mainly including: spherical shell 1, hanging plate 2 and baffle plate 5, wherein the upper part of the spherical shell 1 is hemispherical, the lower part is cylindrical, and One side of the spherical shell 1 is provided with a mounting hole 3, and the hanging plate 2 is provided with a hanging hole 4, as attached figure 1 Shown is the spherical schematic diagram of the upper half of the anti-halo ball.
[0034] attached figure 2 It is a sectional view of the anti-halation ball installed on the triangular connecting plate of the hanging insulator string, and the components related to the insulator string are the connecting plate 6, the clamp hanging plate 7 and the extension bolt 8.
[0035] The outer surface radius of the upper hemisphere and the lower half cylinder of the spherical shell 1 is not less than 50mm, and the outer wall thickness is 5mm....
Embodiment 2
[0042] The preparation material of anti-halation ball of the present invention can select ZL-102 aluminum alloy material for use, about ZL-102 aluminum alloy material, introduce as follows:
[0043] Material name: ZAlSi12
[0044] Alloy code: ZL102
[0045] Standard: GB / T 1173-1995
[0046] Features and scope of application:
[0047] It cannot be strengthened by heat treatment. The alloy has excellent casting performance, no hot cracking and loose tendency, and high air tightness. It has low density and good corrosion resistance. It can be used in environments subject to atmospheric and seawater corrosion, and can withstand the corrosion of concentrated nitric acid and hydrogen peroxide in industrial atmospheres. It also has good welding performance. However, the alloy has low mechanical properties, poor heat resistance and machinability.
[0048] chemical composition:
[0049] Silicon Si: 10.0-13.0
[0050] Aluminum Al: balance
[0051] Iron (sand casting): 0.000~0.700 ...
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Abstract
The invention provides an anti-corona sphere for a power transmission line in a high altitude region, and belongs to the field of overhead mounting of electric wires or cables. The anti-corona sphere provided by the invention is suitable to be arranged on a suspension string yoke plate of the 330kV power transmission line in the high altitude region. By the anti-corona sphere, the end parts of the yoke plate, and bolts and pints at the top of a suspension clamp connected with the yoke plate are covered, an overall shielding function in the combination part of the yoke plate and the clamp is realized, the radius of curvature of a connecting part between the yoke plate and the suspension clamp is indirectly increased, the suspension clamp is endowed with a regular circular surface in shape, the field intensity distribution of the surface is effectively improved and the maximum field intensity of the surface is reduced, thereby suppressing the corona discharging of a tip and reducing the corona noises and corona loss of the power transmission line. The anti-corona sphere comprises a sphere shell, hanging plates, a mounting hole, hanging holes and a baffle plate. The anti-corona sphere provided by the invention is cast and molded from an aluminum alloy material, has a small volume, light weight and low manufacture cost, and is convenient to arrange.
Description
technical field [0001] The invention belongs to the field of overhead installation of electric wires or cables, and in particular relates to an anti-sickness ball used for power transmission lines in high-altitude areas. Background technique [0002] The western region of my country is located on a plateau. According to the geographical characteristics of the western region and its energy development planning, the demand for electricity is increasing day by day. However, with the increase of altitude, the problem of high-altitude corona is very prominent, and corona effects such as corona loss caused by corona discharge will affect the safe and economical operation of transmission lines. Therefore, it is very necessary to prevent corona discharge and corona noise of transmission lines in high altitude areas. [0003] The corona is generated because the uneven conductor produces an uneven electric field. Near the electrode with a small curvature radius around the uneven elec...
Claims
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Application Information
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