Abstract

The increasing automation of very high voltage electrical centres requires abundant transmission of information between various points in the plant. The transmission of information in these centres presents special problems owing to the strong electrical fields, large ground voltage differences between terminals and radioelectric interferences caused by the corona effect and arcing: all these are difficult to solve using conventional means. Optical fibre transmissions are the ideal solution for this type of installation. Thi3 paper describes the optical fi'.Jre installation made in a 400 kV substation and the experiences obtained during two years' operation.

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