In the power transmission and transformation system, most electrical equipment will generate some heat during normal operation. However, in the long-term operation process, some equipment will run abnormally due to aging, corrosion, chemical pollution, leakage and other reasons, and in most cases, the temperature of some parts of the equipment will rise beyond the normal range. This will bring potential threats, which will lead to equipment shutdown and even fire, thus bringing immeasurable losses. However, most faults can't be found by ordinary detection means at the initial stage.

Infrared thermal imager can detect the external temperature of each equipment in the power system, so as to infer the internal operation of the equipment. For the faulty equipment, it can quickly find the hot spots, analyze the severity of the problem, help locate the fault point of the equipment, and repair and maintain the equipment in advance. Using infrared thermal imager to overhaul power equipment can effectively improve the production efficiency of equipment, avoid the loss of emergency shutdown caused by sudden failure, or the safety problem of personnel caused by equipment failure, thus reducing the maintenance cost and ensuring efficient and safe production.

Double-bin infrared online monitoring system has the characteristics of continuous monitoring, non-contact temperature measurement, automatic alarm when exceeding the limit, fast monitoring response, accurate temperature display and no influence on substation operation, which has practical popularization significance.