High-Power Direct Current transmission (HPDC) is a technology employed for the efficient bulk transfer of electrical power over long distances. It offers an alternative to traditional Alternating Current (AC) transmission, particularly when distances are substantial or when connecting asynchronous AC grids. An example is the transmission of electricity from remote renewable energy sources, such as offshore wind farms or distant hydroelectric plants, to urban load centers.
This technology is vital for enhancing grid stability, reducing transmission losses, and enabling the integration of diverse power sources. Its benefits include lower right-of-way requirements compared to AC, minimized line losses over long distances, and improved control over power flow. Historically, HPDC systems have played a crucial role in connecting geographically separated regions and enabling efficient energy trading between different power grids.
