Multi-terminal HVDC as enabling technology of premium quality power park

Subtransmission and distribution systems in large cities are often served by underground cable systems. Because of the compactness and the reduced cost of DC cable transmission lines, a multi-terminal HVDC system based on IGBT voltage source converters (VSCs) can be an attractive alternative to an AC cable system. This paper draws attention to the added value which comes from the capability of multi-terminal HVDC (VSC-M-HVDC) system to ensure uninterrupted quality power to sensitive loads. The value of premium quality power park obtainable from a VSC-M-HVDC system should enhance its attractiveness.