Abstract
With the advancement of social economy, electricity has gradually entered thousands of households and become a commonly used energy source. However, it cannot be ignored that electricity is dangerous in itself and should be used rationally and effectively. The fault detection of power equipment has become a top priority because they are essential tools for storing, transmitting, and transferring electric power. Based on infrared imaging technology, the principle of infrared imaging technology is introduced in this paper, and effective diagnosis methods are analyzed and summarized in detail. The effectiveness of the proposed infrared image segmentation algorithm is verified through the practical application of the infrared image segmentation algorithm in the detection of interior and exterior faults of electrical equipment.
Highlights
If there is a thermal failure in the electrical equipment, a stable thermal field will be formed, which can radiate energy outward. is abnormal thermal field can be sent back to the display of an infrared imager to generate an infrared thermal image with a thermal field
Interior ermal Fault Detection and Diagnosis of the Current Transformer. e current transformer loss is composed of the copper loss, the iron loss, and the joint resistance loss, which are dissipated in the form of heat at the top cap. e method of horizontal and vertical comparison is used to determine the fault based on the criteria as the following: the interphase temperature difference is more than 20°C, and the one at a high temperature has severe interior thermal failure; where the temperature difference is more than 15°C, the power supply should be cut off for testing and inspection; where the temperature difference is more than 10°C, the monitoring should be strengthened; in addition, the temperature rise relative to the environment should not be greater than 70°C
Due to water seepage in the secondary terminal box of the 220 kV Bingjiang station 110 kV 3M bus TYD, it leads to the situation that some secondary terminals become damp and corroded, resulting in a relatively huge leakage current, which causes the secondary terminal box to heat up
Summary
On the one hand, infrared thermal imaging technology can detect temperature changes of electrical equipment over a long distance accurately. On the other hand, infrared thermal imaging technology can identify electrical equipment failures directly without contact so as to ensure the safety of conventional electric technical inspectors [4, 5]. The infrared rays of the object are converted into radiation signals through the optical system, and the signals are converted into displayable output results by using the analytical electrical signal equipment. In combination with infrared imaging temperature measurement, the temperature changes in the electrical equipment can be detected accurately [6]. Based on the size and image quality of the object to be measured, the infrared radiation is concentrated, filtered, and focused. As long as the speed of the detection instrument is sufficiently high and the response is fast enough, the electric signal proportional to the radiation flux can be Advances in Multimedia
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