Online fiber optic sensor for detecting partial discharge and similar events in large utility station transformers and the like
AssigneeNew Jersey Institute of Technology
InventorsHarry T. Roman, Kenneth Rudolph Farmer, II, Xiaodong Wang, Baoqing Li
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Abstract
An approved method and apparatus for detecting partial discharge events within a transformer comprises asserting a MEMS acoustical probe through the wall of the transformer to optically measure partial discharge events. In an enhanced embodiment, temperature compensation is also possible, and detection may be confirmed via an independent electromagnetic or other sensor.
Claims9
Apparatus for detecting partial discharge events comprising a detection circuit for detecting acoustical signatures resulting from a partial discharge event, a plurality of stored signatures for comparing said acoustical signatures to said stored signatures, and an output for signaling detection of a partial discharge event when said detected acoustical signature matches at least one stored signature wherein said at least one stored signature is selected for comparison to said detected signature based upon temperature of an environment in which said apparatus is operating.
Dependencies are inferred from the claim text.