Automatic and supervisory control of substations

THE POLICY of the Toronto Hydro-Electric System is to locate moderate-sized distribution stations near the economical load centers and equip them for automatic or supervisory control. These automatic and supervisory equipments include all the more prominent types as well as equipment developed by the Toronto system for its own use. In addition there is at present a Gamewell signaling system which is used for giving signals to the load dispatchers when switches open automatically in small unattended transformer stations where supervisory control has not been provided.