Current Applications of High Voltage DC Technology
The DC transmission system has various applications, but here are described the three most important applications of this system.
• Submarine cable connections
The DC transmission system is best for cable transmission because of its symmetrical monopole configuration. Different cable designs are used worldwide based on this DC transmission. This system is used in such areas where submarine cables are required to connect to the main grid such as for energy platforms, offshore wind farms, island connections, and urban in-feeds.
• Back-to-back transmission
The DC transmission system is very beneficial for back-to-back transmission in many aspects such as it doesn’t increase the short circuit power and restricts the spread of cascading disturbances.
• Overhead line transmission
The most economical part of a DC transmission system is to use it in overhead lines. The overhead lines using this system require narrow transmission corridors, which decreases the cost.