Built-in optical fiber direct current dynamic composite submarine power cable and manufacturing method thereof

The invention relates to the technical field of cables, in particular to a built-in optical fiber direct current dynamic composite submarine power cable and a manufacturing method thereof, and the power submarine cable comprises an inner core structure, a corrugated copper sleeve, an inner sheath, a plurality of armor layers and an outer sheath; the corrugated copper sleeve is sleeved on the outer side of the inner core structure, the inner sheath is sleeved on the corrugated copper sleeve, the plurality of armor layers are sleeved on the inner sheath, and the outer sheath is sleeved on the plurality of armor layers; the plurality of armor layers comprise odd-numbered layers and even-numbered layers, the odd-numbered layers and the even-numbered layers are composed of steel wires which extend along the axial direction and are arranged in parallel along the circumferential direction, the steel wires on the odd-numbered layers and the even-numbered layers are twisted along the circumferential direction, and the