SYSTEM FOR PREDICTION AND PREVENTION OF ELECTRIC TRANSFORMER FAILURES
First Claim
Patent Images
1. A system for detection of a partial discharge in a power transformer, comprising:
- a) a control module, positioned outside the power transformer;
b) a data acquisition module, positioned outside the power transformer; and
c) a fiber optic acoustic sensor coupled to the control module and the data acquisition module, the fiber optic acoustic sensor comprising;
i. an optical fiber at least partially disposed within the power transformer; and
ii. one or more mirrors configured to phase rotate an optical signal of the optical fiber by 90°
±
1°
, the one or more mirrors positioned outside the power transformer.
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Abstract
The present application relates to systems for detection of partial discharges in a power transformer. In embodiments, the systems utilize fiber optic acoustic sensors to monitor the pressure waves associated with partial discharges and localize the discharges using appropriate measurement and analysis software.
13 Citations
25 Claims
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1. A system for detection of a partial discharge in a power transformer, comprising:
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a) a control module, positioned outside the power transformer; b) a data acquisition module, positioned outside the power transformer; and c) a fiber optic acoustic sensor coupled to the control module and the data acquisition module, the fiber optic acoustic sensor comprising; i. an optical fiber at least partially disposed within the power transformer; and ii. one or more mirrors configured to phase rotate an optical signal of the optical fiber by 90°
±
1°
, the one or more mirrors positioned outside the power transformer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 25)
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9. A system for detection of a partial discharge in a power transformer, comprising:
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a) a control module, positioned outside the power transformer; b) a data acquisition module, positioned outside the power transformer; and c) a fiber optic acoustic sensor coupled to the control module and the data acquisition module, the fiber optic acoustic sensor comprising; i. an interferometer comprising a coiled optical fiber at least partially disposed within the power transformer, a reference optical fiber, a sensor mirror and a reference mirror. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system for detection of a partial discharge in a power transformer, comprising:
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a) a control module, positioned outside the power transformer; b) a data acquisition module, positioned outside the power transformer; and c) a fiber optic acoustic sensor coupled to the control module and the data acquisition module, the fiber optic acoustic sensor comprising an optical fiber at least partially disposed within the power transformer, the optical fiber comprising a fiber Bragg grating. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification