Apparatus and system for monitoring temperature of high voltage conductors
First Claim
1. Apparatus for monitoring the temperature of a high voltage conductor, which comprises:
- a) an electrically and thermally conductive fixture for attachment to a high voltage conductor, b) a high voltage insulator having a high voltage end and a reference potential end and a fiber optic cable passageway from the reference potential end to the high voltage end, said insulator being connected at said high voltage end to said fixture, c) a fiber optic cable within said passageway of said insulator, said cable extending beyond said insulator, d) an optical temperature sensor head optically coupled to said cable, said sensor head comprising a sensor crystal which transmits light that varies with temperature of the sensor crystal, e) an electrically and thermally conductive enclosure for said sensor head, supported in said fixture for thermally conductive contact with said high voltage conductor effective to couple the temperature of the high voltage conductor to said sensor crystal.
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Abstract
Apparatus for monitoring the temperature of a high voltage conductor includes an electrically and thermally conductive fixture for attachment to a high voltage conductor, and a high voltage insulator having a high voltage end and a reference potential end. The insulator is connected at the high voltage end to the fixture. The insulator contains a fiber optic cable in a fiber optic cable passageway from the reference potential end to the high voltage end. The cable extends beyond the insulator. An optical temperature sensor head is optically coupled to the cable the high voltage end. The sensor head includes a sensor crystal which transmits light that varies with temperature of the sensor crystal. An electrically and thermally conductive enclosure enclosing the sensor head is supported in the fixture for thermally conductive contact with the high voltage conductor effective to couple the temperature of the high voltage conductor to the sensor crystal. An optoelectrical unit powers and detects the optic signal carrying the information about the temperature of the high voltage conductor.
53 Citations
31 Claims
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1. Apparatus for monitoring the temperature of a high voltage conductor, which comprises:
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a) an electrically and thermally conductive fixture for attachment to a high voltage conductor, b) a high voltage insulator having a high voltage end and a reference potential end and a fiber optic cable passageway from the reference potential end to the high voltage end, said insulator being connected at said high voltage end to said fixture, c) a fiber optic cable within said passageway of said insulator, said cable extending beyond said insulator, d) an optical temperature sensor head optically coupled to said cable, said sensor head comprising a sensor crystal which transmits light that varies with temperature of the sensor crystal, e) an electrically and thermally conductive enclosure for said sensor head, supported in said fixture for thermally conductive contact with said high voltage conductor effective to couple the temperature of the high voltage conductor to said sensor crystal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. System for detecting the temperature of a high voltage conductor, which comprises:
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(a) an electrically and thermally conductive fixture for attachment to a high voltage conductor, (b) a high voltage insulator having a high voltage end and a reference potential end and a fiber optic cable passageway from the reference potential end to the high voltage end, said insulator being connected at said high voltage end to said fixture, (c) a fiber optic cable comprising optical fibers within said passageway of said insulator, said cable extending from said insulator distally to an end thereof, (d) an optical temperature sensor head optically coupled to said cable, said sensor head comprising a sensor crystal which transmits light in variance to temperature of the sensor crystal, (e) an electrically and thermally conductive enclosure for said sensor head, supported in said fixture for thermally conductive contact with said high voltage conductor effective to couple the temperature of the high voltage conductor to said sensor crystal, (f) a light source optically coupled to an optical fiber at said end of said fiber optical cable, for sending light through such optical fiber for transmission through said sensor crystal and return from said sensor crystal through an optical fiber in said cable, said return light carrying an optical information telling the temperature of said high voltage conductor, and (g) a detector optically coupled at said end of said fiber optical cable to an optical fiber carrying said return light, for receiving and converting said optical information into electronic information in another form representative of the temperature of said high voltage conductor. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification