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Application Of Fiber Optics In High Voltage Substations

This paper reviews the application of fiber optics in the high voltage substation environment. Present applications as well as future uses for fiber optics are discussed. The larger scale use of fiber optics for data transmittal to a transient monitoring laboratory from a variety of remote primary transducers and the use of optical fiber as a data link from line potential to ground are highlighted as applications presently in service. These applications are used in projects sponsored by the Electric Power Research Institute. Rationale behind the use of optical fibers in several applications are presented along with the authors' practical observations of the advantages and obstacles of using fiber optics and electro-optics in the utility environment.