The invention relates to the technical field of
offshore wind power generation, and provides a submersible
submarine cable. The cable comprises a cable core, a filling layer and a
buoyancy adjusting unit. The filling layer is filled and wraps the outer side of the cable core, the
buoyancy adjusting unit is embedded in the filling layer, the
buoyancy can be flexibly adjusted, and the
submarine cable is made to suspend at the target depth between the sea surface and the
seabed. Grooves do not need to be excavated on the
seabed, the cable is directly put and positioned during laying, the cable can automatically return to the preset depth after maintenance, the process is greatly simplified, and cost is reduced. Suspension design adapts to a complex geological area, geological activity damage is avoided, and the
project site selection range is expanded; the heat dissipation mode of direct contact with flowing
seawater effectively reduces the temperature of the conductor and avoids the reduction of the current-
carrying capacity. The
system has static cable stability and dynamic cable anti-fatigue performance and can be directly connected with a floating fan and a mainland
power grid, the fault risk of an intermediate joint is eliminated, and the buoyancy adjusting unit can dynamically adapt to environmental changes and maintain suspension stability.