What's Overhead Power Transmission Lines Construction
Overhead power lines are the infrastructure for electric power transmission and distribution along large distances. It consists of one or more conductors suspended by towers or utility poles. Since most of the insulation is provided by air, overhead power lines are generally the lowest-cost method of power transmission for large amounts of electric energy.
Transmission-class line construction is very specialized. Compared to distribution construction, structures are taller, spans are longer, conductors are larger/heavier/stiffer, and pulls are longer and can extend over steep and very uneven terrain. In addition, aluminum conductors vary in construction requirements, calling for special handling techniques, tools, and equipment.
Transmission construction also involves different line and structure designs, as well as different conductor configurations (including simultaneous stringing of multiple conductors ('bundles") using a single pulling line). These configurations can range from single to bundles of two, three, four, and six conductors per phase. Some lines are strung using conventional, ground-based equipment and tools, while others require stringing using helicopters.
Nowadays the great challenge is to increase the transmission efficiency and the transmission distance. Nanyue technology can help reaching these goals, thanks to its low conductor damage and multiple conductor machines and the capability of stringing any type of new generation conductor.
Explore Nanyue range of machines and accessories for stringing operations here.