Spatial electromagnetic interference shielding device in grounding wire of current collection circuit

The utility model discloses a space electromagnetic interference shielding device in a grounding wire of a current collection circuit. The space electromagnetic interference shielding device comprises a wire, a lead-out T-shaped joint is fixed on the wire, the bottom end of the lead-out T-shaped joint is connected with a grounding wire shielding sleeve, a disc convex part used for mounting a high-frequency pulse current sensor is formed on the grounding wire shielding sleeve, and the bottom end of the grounding wire shielding sleeve is connected with a grounding copper bar through a lead-in T-shaped joint; a grounding wire is led out of the wire, the grounding wire extends into the grounding wire shielding sleeve through the leading-out T-shaped connector, and the grounding wire penetrates through the grounding wire shielding sleeve and extends to the leading-in T-shaped connector to be electrically connected with the grounding copper bar. The partial discharge on-line monitoring device shields space electrom