Flexible DC transmission system solution for offshore wind power

To meet the requirements of offshore applications, the system delivery scheme was designed for a lightweight and compact offshore wind power converter based on its ±800KV UHV flexible DC transmission technology and capacity of supplying primary equipment for flexible DC systems. The system was optimized to reduce module capacitance, the number of modules and the loss. At the same time, a more competitive new topology scheme was put forward in line with the development trend of the industry. On the premise of ensuring reliability, the power density is further improved through compact and lightweight design. The modular centralized energy discharge device of offshore wind power with independent intellectual property rights was adopted to prevent the failure of the onshore AC system from affecting the offshore wind power system and ensure the safe and reliable operation of the whole system.