Electrical Features of the Churchill Falls Developments

This paper contains a brief outline of the principal elements of the 5225-MW Churchill Falls hydroelectric power development, together with a review of the significant electrical features. It describes the 500-MVA generating units, the arrangement of busses, transformers and 240-kV cables used to transmit energy from the underground powerhouse to the surface, the 735-kV switchyard, the auxiliary power system, protective relaying, control and annunciation schemes, and the data logging computer installation.