Professional Answer: While the majority of power grids use alternating current (AC), high-voltage direct current (HVDC) offers significant advantages, particularly for long-distance transmission. The primary benefit is reduced power loss. HVDC systems lose much less energy over long distances compared to AC because they do not have reactive power losses or the skin effect. This makes HVDC a more efficient and economical choice for connecting remote power generation sites, like large hydroelectric dams or offshore wind farms, to the grid. HVDC is also the ideal technology for submarine power cables and for connecting electrical grids that are not synchronized with each other.

Ningbo Changshi manufactures a comprehensive array of equipment for both OHTL stringing and underground cable laying, allowing our customers to build both AC and HVDC transmission projects with confidence. Our tools are built to handle the rigorous demands of modern, high-efficiency power transmission, ensuring your projects are completed safely and effectively.