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Abstract
With the continuous development of EHV (UHV) transmission lines，new lines often need to drill through the built lines，so it is urgent to study the type of diving towers. Based on typical weather conditions and commonly used ground wire models, the basic type and tower type selection of 110kV single and double circuit overpass towers in high altitude areas are studied, and two single and double circuit overpass tower schemes are planned and arranged. And according to the pole tower structure design and optimization theory, the 110kV single-circuit diving tower and the 110kV dual-circuit diving tower are optimized from the structural optimization layout and the pole tower structure node optimization design. The research results show that the single-circuit diving tower adopts the wine glass tower, and the wires are arranged horizontally, and the double-circuit diving tower effectively reduces the height of the tower. The dish-shaped tower is used, and the single-circuit wires are arranged in a triangle pattern, which provides a certain practical guiding significance for the 110kV diving-across technology application.
Highlights
In recent years, with the rapid economic development and the acceleration of urbanization, the resources of high-voltage transmission line corridors have become increasingly scarce[1]
The design of the tower's root opening and tower body opening width The tower body opening width and the value of the tower root opening are related to the change of the tower body slope, which has a huge impact on the overall rigidity and tower weight of the tower
Because the upper mouth is limited by the electrical clearance, the adjustable range is not Large, under the condition of meeting the electrical clearance, the upper mouth size can be adjusted in a small range, and the lower mouth size can be adjusted in a larger range, and the tower slope and root opening can be optimized by multi-scheme combination
Summary
With the rapid economic development and the acceleration of urbanization, the resources of high-voltage transmission line corridors have become increasingly scarce[1]. The design of the tower should follow the principles of "safety, reasonableness and economy", which are mainly reflected in the following points: Ensure the strength, stability and necessary rigidity of the tower, as well as future safety; Reduce steel consumption; The components are reasonably arranged, the structure is concise, and the force transmission route is direct, short and clear; The components and inter-nodes are reasonably divided to give full play to the load-bearing potential of the components and optimize the nodes. Under a certain use condition, there is a suitable range of the size and slope of the upper and lower mouth of the tower Within this range, the material consumption of the iron tower is the lowest. It is very necessary to study the basic type and tower type selection of 110kV single and double loop diving tower
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