Diagnosis method and diagnosis device for internal abnormality and deterioration of transformer, and manufacturing and sales method of transformer

摘要

An object of the present invention is to provide a technique capable of easily detecting an internal abnormality of a transformer and diagnosing deterioration thereof. The present invention relates to a method for diagnosing internal abnormality and deterioration of a transformer including a winding that constitutes a coil body, an iron core, and a tank that accommodates the winding, and a bottom plate, a side plate, and a ceiling that form the tank. A plurality of acceleration sensors are installed on one or more of the plates, and based on the information obtained from the acceleration sensors, the vibration of the tank is time-divided so that it can be visualized with the naked eye, and an animation is displayed on the display device. From this grasp of the displayed content, the characteristic vibration characteristic of the vibration mode of the winding or the vibration mode of the iron core is picked up, and the vibration response of the operating transformer is analyzed based on the change of the natural frequency. Is characterized by. [Selection diagram] Figure 1