Introduction  Offshore wind power has become a research hotspot in the development of global wind power. China's offshore wind power is still in its infancy, the current operation mode is not conducive to the large-scale centralized transmission of offshore wind power and cannot adapt to the long-term development under the new situation. Moreover, the subsidy policies of European countries for offshore wind power conflict with China's development ideas, so they cannot be used for reference, and there are still some disadvantages in the European modes. Therefore, it is necessary to explore a new mode suitable for the development of offshore wind power in China's offshore deep-water areas.

  Method  Firstly, the development status of offshore wind power in European countries was analyzed and the current transmission modes of offshore wind power were summarized. Secondly, four application scenarios of offshore wind power transmission technology were given. Finally, the feasibility of offshore wind power business model was analyzed.

  Result  The results show that the connection to grid at an equal price is expected to be achieved in Guangdong during the 14th Five-Year Plan period after the separation of offshore wind power generation and transmission side links. The centralized development of offshore wind power in deep-water areas is more feasible for economy and environmental intensive utilization compared with the decentralized development.

  Conclusion  The research conclusion can provide technical support for the scheme design and construction mode of the follow-up large-scale offshore wind power centralized transmission project and has a good demonstration application prospect.