Research on the impact of low frequency transmission technology on the AC limit access distance of offshore wind farms

For offshore wind power, AC cables are used to connect to the power grid. Due to the high charging power of the cables, when the cable is connected beyond a certain distance, it may lead to difficulties in controlling the voltage and current carrying capacity of offshore wind power projects and their grid connection points. In response to the above issues, this article proposes a method of using low-frequency transmission technology to improve the limit AC access distance of offshore wind farms. By utilizing low-frequency transmission technology, the ground capacitance of transmission cables can be increased, thereby reducing charging power and increasing transmission distance. Simulation verification has been conducted in actual power grids, and this method is feasible and effective.