Abstract
The criticality of fibre-optic cable design for overhead power transmission line applications presents a challenging task to the cable designers the world over. The cable design must ensure that there are no long term problems with fibres or cable construction, which might otherwise lead to the collapse of fibre-optic communication system. Optical Fibre Ground Wire (OPGW) is designed as a two function aerial conductor viz, a shield wire to take care of fault current and lightning strike, and integrated fibre-optic unit taking on the function of communication. The OPGW has been found to be the best solution when installed as replacement of conventional earthwire on new transmission lines or when there is a need to change the old groundwire of existing line. On existing transmission lines, the preferable option is to install an All Dielectric Self Supporting Fibre Optic Cable (ADSS), being cost-effective. The installed ADSS is independent of power lines and provides an attractive solution in respect of main...
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