T&S V01 FBG vibration sensor is a device for measuring structural vibration. V01 vibration sensor can be combined with two other sensors fixed on special clamps for simultaneous measurement in three axial directions. Combined with WDM technology, a quasi-distributed sensor network is structured to directly measure the three-dimensional vibration acceleration of transformer body during its operation, which provides a new technical means for real-time online monitoring and condition evaluation of transformer vibration.