Monitoring device for electric power system

The utility model discloses a monitoring device for an electric power system. The monitoring device comprises a camera at a front end, network equipment, and an information processing center at a rear end, wherein the camera is provided with an optical fiber interface, the network equipment is an optical switch, and the camera and the optical switch are connected via an optical fiber composite low voltage cable. The camera and the optical switch are connected via the optical fiber composite low voltage cable, which integrates optical fiber, power transmission copper wire, and copper signal wire pair, i.e. optical cable and power line are integrated, thus individual power supply line is not needed, wiring is simple, construction amount is small, and cost is low.