Cable fixing device, wind generating set and cable hoisting method

The invention relates to the technical field of wind power generation, and provides a cable fixing device, a wind generating set and a cable hoisting method.The cable fixing device comprises a plurality of cable sheaths which are arranged on the periphery of a cable in a sleeving mode and distributed in the axial direction of the cable; the cable sheath is used for clamping a cable; the stress ropes penetrate from the top of the tower drum to the bottom of the tower drum; each stress rope is connected with the cable sheath at the same horizontal height, and the two ends of each stress rope are correspondingly connected with a tower drum platform of the tower drum. The stress rope is fixed to the center of the tower platform, cables do not need to be fixed to the tower wall layer by layer and do not need to bypass a saddle bridge, fixing assemblies are reduced, the structure is simplified, and the cable hoisting time is greatly saved; besides, due to the arrangement of the stress rope, in the process of twisti