The maintenance of voltage on a d.c. distribution system by means of a fully automatic substation

The paper describes the considered methods of meeting a particular case of, voltage-drop in a large direct-current lighting network and for bringing into use the maximum amount of its copper with a minimum of cost. A fully automatic station was chosen in this instance for the reasons stated, and the author in discussing the subject has not attempted to review the relative merits of different types of automatic stations; but rather the method of dealing with a particular problem, and with this end in view has described the station which has come under his immediate control. So far as the author is aware, the plant described is that of the first fully, automatic, station in this country, for any purpose, and of the first fully automatic station in existence operating a three-wire system.