The Application Of Infrared Temperature Detecting Technology In Power System

Infrared technology is a diagnostic tool to detect equipment failure is an extensive power industry now, by showing images of the fault situation intuitively and with high accuracy. It’s not necessary to outage, to sample, to change equipment operating parameters in detecting, the temperature and then the location and nature of the equipment operating conditions or defects can be accurately determined. It is one of the most effective means to power system condition-based maintenance.The energy that objects radiated will be changed as the changes of the temperature of the object, the detection signal of the infrared detector will also change, So the temperature of the object can be calculated with these detection signals. Electric power equipment in operation is often accompanied by the phenomenon of temperature rise; while in its failure, most of the temperature rise is beyond the normal operation value. Different field testing environment and conditions will result in that the detection of the same power equipment reached a different judgment.In order to improve the accuracy, the four aspects that impact infrared diagnosis were analyzed and studied, there are power equipment surface emissivity, atmospheric attenuation, environment and background radiation and equipment operation state; Furthermore, the corresponding countermeasures are proposed. In the actual application process, we must also strengthen the training of inspectors and to select the appropriate infrared detectors, to reduce these factors. Through the strengthening of the same type of infrared testing equipment, some similar failures can effectively prevented or early detected, especially in peak summer, peak winter and other heavy-duty running in major events and other important insurance electric load operation case, the closely monitoring on the operation of the equipment can effectively protect the safety and stable operation of the power system.