Intelligent heating defect monitoring device for power transmission and transformation equipment of electric power system

The invention discloses an intelligent heating defect monitoring device for power transmission and transformation equipment of an electric power system, which comprises a U-shaped pipe fixedly arranged on the side wall of a transformer, an expanding agent is arranged in the side pipe, close to the transformer, of the U-shaped pipe, a partition plate is arranged on the upper side of the expanding agent in a sliding manner, a feeding port corresponding to the expanding agent is formed in the side wall of the U-shaped pipe, a sealing cover is arranged on the feeding opening in a covering mode, a heat conduction piece is fixedly arranged on the upper wall of the transformer, a pipe opening of the other side pipe of the U-shaped pipe corresponds to the heat conduction piece, a sliding plate is arranged in the side pipe, close to the heat conduction piece, of the U-shaped pipe in a sliding mode, and a thermometer is fixedly arranged on the side, close to the heat conduction piece, of the sliding plate. According to the invention, when the transformer reaches a certain temperature, an alarm is given, a worker is reminded to carry out temperature monitoring, continuous monitoring by the worker is not needed, the energy of the worker is saved, the transformer can be automatically cooled, and the problem that the transformer is burnt out due to too high temperature is effectively avoided.