A study of submarine power grid planning for offshore wind farm

The electricity production from renewable energy has become more attractive due to the need of green energy. Wind power is a matured market resource in the power grids worldwide. Since the saturation of onshore wind farm installations, it is a trend to develop wind farms in the offshore area in the future. The challenge for offshore wind energy transmission and operation included the offshore wind grid technologies, low-voltage-ride-through and the dynamic voltage supporting. In this study, the authors focus on the planning of wind farm power grid in Taiwan, which includes issues such as planning procedure, ampacity calculation of medium voltage-and high-voltage submarine cables connecting to offshore wind farms, and the grid interconnections. Case studies on the submarine grid laying for offshore wind farm and short time overload ampacity study are then reported.