Patent ID: 11860242
Assignee: XEROX CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A monitoring system comprising:
two or more power transformer monitors of a power grid system, each power transformer monitor comprising a plurality of optical sensors disposed on one or more optical fibers, the optical sensors configured to sense internal parameters of a power transformer, each optical sensor disposed at a location within or on a power transformer and configured to sense an internal transformer parameter that is different from an internal transformer parameter sensed by at least one other sensor of the plurality of optical sensors;
one or more detector units, each detector unit configured to convert optical signals of the optical sensors of a corresponding power transformer monitor to electrical signals representative of the sensed transformer parameters;
shared control circuitry communicatively coupled to each of the power transformer monitors, wherein the control circuitry includes the detector units and the detector units are communicatively coupled to each power transformer monitor by an optical communication channel, wherein the optical communication channel includes an optical sensor configured to detect signal anomalies not attributable to transformer parameters; and
at least one optical coupler disposed between the one or more optical fibers and the detector units, the optical coupler configured to spatially disperse optical signals from the optical sensors according to wavelength.