Abstract: The rapid development of digital image processing and recognition technology provides good opportunity for automation of online monitoring system of the power system. Whether the electric power equipments operate normally is very important for safe and reliable operation of the system. Based on automatic recognition and analysis functions of the computers, using the image processing and recognition technology, combining with several methods, such as the method of OTSU for threshold selection, the SSDA for recognition and the FD for judgment, the online monitoring of electric power equipments was realized. The traditional manual inspection was replaced by this system, and the efficiency was improved. The advantages of various technologies had been integrated in this image recognition technology, so its processing result is more accurate.
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Key words: power equipment, image preprocessing, image recognition, sequence similarity detection algorithm (SSDA), frame difference method (FD)