High-voltage composite umbilical cable and manufacturing process thereof

The invention discloses a high-voltage composite umbilical cable. The high-voltage composite umbilical cable comprises an inner-layer functional unit group, an outer-layer functional unit group and an outer sheath, wherein the inner-layer function unit group comprises three inner-layer medium-voltage cable units arranged in the center and an inner-layer filling steel pipe unit, and the outer-layer function unit group comprises four outer-layer steel pipe units. The four outer-layer steel pipe units divide the periphery of the outer-layer function unit into four installation areas, wherein an outer-layer medium-voltage cable unit, two low-voltage cable units, an outer-layer filling steel pipe unit and a filling body are arranged in three of the installation areas respectively. A steel strand unit, two low-voltage cable units, an outer layer filling steel pipe unit and a filling body are arranged in the other mounting area. According to the high-voltage composite umbilical cable and the manufacturing process th