UB EE 566 - Fiber Optics in High Voltage Transmission Environments (15 pages)

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Fiber Optics in High Voltage Transmission Environments



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Fiber Optics in High Voltage Transmission Environments

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Pages:
15
School:
University at Buffalo, The State University of New York
Course:
Ee 566 - Optical Communications

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Fiber Optics in High Voltage Transmission Environments EE 566 By Jason Jones October 8 2003 My Reason for Choosing This Topic Find a Combination Between Fiber Optics and Power Engineering This is looking at Fiber Optics in an alternative industry Fig 1 Fig 2 Overview 1 Basics of fiber optic and electrical transmission lines 2 Different uses of fiber optic cable in the transmission grid system 3 Employment options 4 Conclusion summary Can high voltage electricity be sent through fiber optics cable No conclusive evidence or research has shown that it is possible Only the use of converters still not practical for long distances and high voltage Why use fiber optics with transmission lines Sensing and detection of electrical faults and failure i e Supervisory Control and Data Acquisition Systems S C A D A Can be used as a neutral or ground No EMC EMI issues Communication between plants and substations Extensive ROW Right Of Way The cost advantages of existing ROW makes utilities attractive lineleasing partners for many communications carriers Combination of Two Different Concepts Fiber optic cables 1 Transmits light photons 2 Primarily for communications Electric cables 1 Transmits electricity electrons 2 Primarily for powering electrical devices Most commonly used Fiber Optic All Dielectric Self Supporting ADSS Wrap type Optical Ground Wire OPGW Details of ADSS Cables High fiber count Cheaper than OPGW Installed along electrical transmission lines Fig 3 Details of the OPGW OPGW is a composite wire which serves as a conventional overhead ground wire with the added benefit of providing highcapacity and reliable fiber optic communication Fig 4 Common Problems Contamination fertilizer pesticides exhaust emissions salt fog Can only be solved on the design level difficult because of high voltage design requirements Space Potential Electrical potential induced on fiber optic cables Dry Band Arcing Caused by the induced current during wet conditions Space Potential Induced



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