Choice of interconnected points for large-scale offshore wind farms in Taiwan

Taiwan is developing the renewable energy actively, in which the wind energy is seen as one of the important resources. However, the suitable locations for wind farm constructions are less on the shore, and the trend of wind farm development in the near future will toward to offshore where the installation capacity of the wind farm could reach hundreds of megawatts. In this work, the choice of interconnected point of the large-scale offshore wind farm to the grid is investigated by using simulation analyses, in which the installation capacity of the offshore wind farm is assumed 864MW. The interconnected point is chosen on the extra-high voltage bus in the west coast of Taiwan. The short circuit current, short circuit capacity, and short circuit ratio (SCR) are used to determine the interconnected points. Besides, the impact of wind speed variation (gust, ramp-up, and ramp-down) on the voltage was also analyzed.