Relay protection device for power plant

The utility model relates to the technical field of power plant relay protection, in particular to a relay protection device for a power plant, which comprises a bottom box, a telescopic device and a telescopic shaft, and the lower end of the telescopic device is fixedly connected with a fixed disc. The defects in the prior art are overcome, by arranging the telescopic devices, the telescopic shafts, the wheel frames and the moving wheels, when the working position of the device needs to be replaced, all the telescopic devices are controlled firstly, the telescopic devices can drive the telescopic shafts to conduct telescopic work, the telescopic shafts can extend outwards from the bottom of the bottom box, and then the telescopic shafts can stretch out from the bottom of the bottom box; then, a telescopic shaft moves a fixed disc and a wheel frame towards the ground until moving wheels make contact with the ground and jack up supporting legs beside to be suspended, then operation of a telescopic device is st