Electrical Features of Ontario Hydro´s Modern Supervisory-Controlled Hydraulic Generating Stations

Since 1956, all Onttario Hydro´s hydraulic generating stations, developed in remote or semiremote areas, have been designed for supervisory control from existing stations. The electrical features of these plants are described, with emphasis on automatic control equipment, supervisory equipment, the extent to which remote control, telemetering, and annunciation is installed, the operation of units with depressed settings as synichronous condensers, station groundinig utilizing reinforcing steel, and how to obtain reliable service power without the use of smallcapacity service generators or separate service supplies from an outside source.