抄録
A thermal image has been often used to inspect a power apparatus. If an automatic diagnosis method for the apparatuses by thermal images is developed, it makes inspection more efficiently. Then, a new method of diagnosis of a power distribution apparatus by a thermal image is developed as one of functions incorporated into a monitoring device that moves on a ground wire. The method consists of both extraction of an apparatus from a thermal image by using installation pattern of apparatuses and detection ofa faulty apparatus by local temperature gradient. The experiments with the proposed method were done under many different conditions like different weather, time, and season. An error rate of 3%is obtained with the experiments of extraction of an apparatus. And an error rate of 17% is obtained with the experiments of detection ofa malfunctioning apparatus. The proposed method could extract and detect them except the case that the distance between a pole and an infrared camera was so far that the intensity sensitivity was not sufficient.
