Ground structure of OPGW optical cable in transformer substation

Provided is a ground structure of an OPGW optical cable in a transformer substation. For an outdoor station, the top end and the bottom of a framework pillar are respectively provided with OPGW reserved ground terminals which are electrically connected with the framework pillar and are in a block shape and are provided with a hole in the middle. Flat area of each ground terminal should not be lower than 3000 mm . The OPGW reserved ground terminal uses a bolt to connect with a bolt-type aluminum terminal connector. The bolt-type aluminum terminal connector is connected with the tail end of the OPGW optical cable ground wire. For an indoor station, a galvanized slab is horizontally laid along a wire inlet side parapet wall. The distance between the galvanized slab and a roof is 300 mm, and the distance between the galvanized slab and a wall is 50 mm, and the galvanized slab is horizontal and is provided with two holes. In addition, from the ground terminal of a station device, two galvanized slabs are led on a roof and are welded with the galvanized slab which is disposed on the wire inlet side parapet wall, so as to form a ground net. The reserved hole of the horizontally laid galvanized slab is connected with the bolt-type aluminum terminal connector through a bolt. The bolt-type aluminum terminal connector is connected with the tail end of the ground wire of the OPGW optical cable. The ground structure of an OPGW optical cable in a transformer substation is standard and unified, and is convenient in construction. More importantly, good ground contact is ensured, and grounding resistors satisfy requirements.