Vibration Science

Every power transformer produces a characteristic vibration pattern shaped by its construction, its load, and the condition of its core and windings. VIE reads that pattern continuously across three axes, corrected for weather and load, referenced against a virtual model built from the transformer's geometry. When the pattern deviates from what the model predicts, that deviation is the earliest available signal of a developing fault.

Transformer oil is not just a coolant. It is the medium through which winding vibrations travel to VIE's sensors. As oil degrades, it changes how pressure waves propagate through it — and VIE detects that change continuously, without extracting a sample. VIE's oil metrics track four distinct degradation modes as leading indicators, days or weeks before a scheduled lab test would flag the same unit.

Vibration science has been the foundation of machine health monitoring for over a century. Power transformers vibrate through two distinct physical mechanisms, magnetostriction in the core and Lorentz forces on the windings, each carrying different diagnostic information. VIE applies continuous sensing and machine learning to a field that was already proven.

Partial discharge is not a single event. It is a repeating pattern of localized electrical breakdown that intensifies over time and precedes full insulation failure by months or years. VIE detects that pattern through the vibration anomalies it produces — before it generates enough gas to appear in a standard DGA test.

Transformer diagnostics, like economic forecasting, depend on when in the failure sequence a signal appears. Most of the industry relies on lagging indicators that confirm damage after it has occurred. VIE produces leading and coincident indicators that detect mechanical and electrical change before it becomes a fault.

DC bias shifts the transformer core’s magnetic operating point off-center, making magnetostriction asymmetric and introducing sub-harmonic and harmonic distortion into the vibration spectrum. VIE detects this shift non-invasively and continuously — without terminal measurements, without current injection, and without an outage. For geomagnetically induced current events and DC rail interference, VIE provides the transformer-level ground truth on what the core actually experienced.