The primary difference lies in the type of current used: Alternating Current (AC) or Direct Current (DC). Both have specific applications and advantages in the power grid.

• High-Voltage Alternating Current (HVAC): This is the most common type of transmission system used globally. Its key advantage is the ease with which voltage can be stepped up or down using transformers, making it highly flexible for an interconnected grid. HVAC is most economical for short to medium distances and is the standard for power distribution to homes and businesses.

• High-Voltage Direct Current (HVDC): HVDC transmission is the preferred method for transmitting large amounts of power over very long distances (e.g., hundreds or thousands of kilometers), particularly for connecting remote power sources like hydro or wind farms to urban centers. Its main advantages are significantly lower power loss over long distances and its ability to connect two different AC power grids that are not synchronized. HVDC is also the only feasible option for long-distance submarine or underground power cables.

Our OHTL wire cable conductor tension stringing equipment is widely used for both HVAC and HVDC overhead lines, ensuring the precise and efficient installation of conductors for any project, regardless of the current type.