Connecting and fixing structure for substation relay protection device

The utility model discloses a connecting and fixing structure for a transformer substation relay protection device. The device comprises a rear baffle, a first supporting plate, a fixing plate, a second supporting plate and a front baffle, a rear baffle is fixed to the top of the rear side of the fixing plate. The front side of the fixed plate is elastically connected with a front baffle through aspring; a sponge pad is fixed on one side of the front baffle close to the fixed plate; a protrusion is fixed to the fixing plate, a first supporting plate and a second supporting plate are movably connected to the two sides of the top of the protrusion respectively, a first nut base and a second nut base are fixed to the two ends of the top of the protrusion respectively, and a first screw and asecond screw are in threaded rotation on the first nut base and the second nut base respectively. According to the utility model, the rear baffle plate, the first supporting plate, the second supporting plate, the front baffl