A power system analogue and network computer

THE NETWORK ANALYZER has become a practical necessity in the solution of complex power-system problems. Since a few weeks a year on rented calculators have proved inadequate, The Detroit Edison Company has designed and installed a system analogue and network computer to provide full-time use of this essential engineering tool. Inasmuch as this device would be used for the study of current operating problems aimed at obtaining optimum system performance, as well as for systemplanning functions, it seemed desirable to combine a conventional, completely variable network calculator with a fixed permanently connected section which is a factual reproduction of the company´s bulk power system.