Medium Voltage DC System
Power Electronics is a critical enabler for an accelerated transition to achieve a net-zero carbon electricity network. Such technology provides controlled power flow as DC couplers, point-to-point connections as DC links and meshed DC grids with multiple points of connection. Medium-voltage DC (MVDC) can be viewed as acting in the same way as high-voltage DC (HVDC) systems in transmission grids, just on a smaller scale and over comparatively shorter distances or at a specific site. Such MVDC systems allow much more flexible ways of grid operation beyond the scope of conventional AC systems by flexible power flow control, increased connection capacity on the same infrastructure compared with AC and voltage optimisation, hence a more efficient use of grid resources.
To read this article subscribe to ELECTRA. Single edition, annual options and CIGRE membership are available. Access to all editions is free for CIGRE members.
Already have an account? Sign in