Structure used for fixing internal conductor of branch bus

The utility relates to the field of 220 kV combined electric appliance technology, and particularly to a structure used for fixing an internal conductor of a branch bus in a 220 kV combined electric appliance. The structure used for fixing the internal conductor of the branch bus comprises a branch conductor, a branch housing, a plum blossom contact, a basin type insulator, an insulation pillar, a fixing seat and a cover plate; the insulation pillar is a cone whose one end with a large diameter and the other end with small diameter, the end with the small diameter is connected with the plum blossom contact through bolts, and the end with the large diameter is connected with the fixing seat through bolts; the fixing seat is a disc, the diameter of the fixing seat is larger than that of the insulation pillar, and arc transition is adopted by a joint of a connecting face between the fixing seat and the insulation pillar and the periphery of the fixing seat; and the outside of the fixing seat is connected with th