  In this paper, a novel method for in detail detection of the winding axial
displacement in power transformers based on UWB imaging is presented. In this
method, the radar imaging process is implemented on the power transformer by
using an ultra-wide band (UWB) transceiver. The result is a 2-D image of the
transformer winding, which is analyzed to determine the occurrence as well as
the magnitude of the winding axial displacement. The method is implemented on a
transformer model. The experimental results illustrate the effectiveness of the
proposed method.
