A storage rack for high-voltage transmission wires
A high-voltage power transmission and storage rack technology, which is applied in the field of wire storage racks, can solve the problems of uneven electric field on the surface of wires, influence on corona characteristic tests, and great influence of corona discharge, etc., to protect the surface of wires, simple structure, and low cost Effect
Active Publication Date: 2017-01-18
STATE GRID CORP OF CHINA +1
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Problems solved by technology
However, the use of split wires also leads to a large number of wires. Since it is necessary to carry out electromagnetic environment test research on dozens of wires, it is necessary to replace the wires from time to time.
In the process of replacing wires and storing and handling wires, it is easy to cause scratches on the surface of wires, and scratches on the surface of wires have a great impact on corona discharge
When the wire surface is scratched or damaged, it will cause uneven electric field on the wire surface, increase corona discharge, and then affect the corona characteristic test.
Method used
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Embodiment 1
[0042] The high-voltage transmission wire storage rack provided by the embodiment of the present invention has been installed in the test line section of the UHV DC test base of the State Grid Corporation of China. The length of the test site is 235 meters, and the usable width is 19 meters.
[0043] First lay concrete with a thickness of 80mm, covering an area of 2,600 square meters. The concrete includes cement, fly ash, sand, gravel and water. The mix ratio is 1:0.20:2.08:3.12:0.65 by weight; the cement strength grade is 42.5MP, the fineness modulus of sand is 2.82, and the maximum particle size of gravel is 20mm.
[0044] Secondly, install the fixed unit 1 and the support unit 2. The fixed unit 1 is 2.5 meters wide and 96 meters long, using 16# channel steel; 19 support units 2 are placed between the fixed unit 1, and the support unit 2 uses 10# channel steel , The base 5 is a 63*63 angle iron, the support 6 is a 5*10 wooden square, the height is 0.6 meters, and the spec...
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The invention provides a storage rack for a high voltage transmission conductor. The storage rack comprises a fixing rack and a supporting rack; the fixing rack consists of fixing units consisting of upright posts and crossbeams; the supporting rack consists of supporting units; the supporting units are arranged between the fixing units in parallel. The storage rack is characterized in that a crossbeam of each supporting unit is provided with a base and a bracket; grooves are formed in each bracket at equal intervals; the opening direction of the grooves is perpendicular to the axial direction of the supporting units; the crossbeam of each fixing unit is provided with hooks matched with the grooves at intervals. Compared with the prior art, the storage rack for the high voltage transmission conductor has the advantages that the surface of the conductor can be protected to the greatest extent, scratches brought by collision are avoided, and the influence of the scratches on corona tests is reduced; the conductor is convenient to transport and carry, and can be repeatedly utilized to the greatest extent.
Description
technical field [0001] The invention relates to a storage rack for wires, in particular to a storage rack for placing high-voltage transmission wires after the experiment is completed. Background technique [0002] The development of High Voltage Direct Current transmission (HVDC) has a history of more than 100 years. It played a role in the early stage of the development of power transmission technology. Large-capacity DC motors have technical problems such as commutation difficulties, making DC transmission technically and economically unable to compete with AC transmission, so progress is slow. [0003] After the 1950s, the demand for electricity increased day by day, long-distance large-capacity transmission lines continued to increase, the power grid expanded, and AC transmission was limited by the stability of synchronous operation. The results of technical and economic comparisons under certain conditions show that it is more reasonable to use DC transmission , and h...
Claims
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IPC IPC(8): B65H75/00
Inventor 刘元庆边大勇郭剑陆家榆葛瑞袆
Owner STATE GRID CORP OF CHINA