Long Cable Lines-Alternating Current with Reactor Compensation or Direct Current

The limitations imposed by capacitance of long cable lines upon their power transmission capabilities are generally known. Howvever, the limited relief afforded by shunt inductive reactors is not fully appreciated. Quantitative evaluations of various modes of such compensation are provided in graphs and tables for a wide range of line lengths. The advantages of high-voltage d-c transmission, as an alternative system, are also outlined with emphasis on developments necessary to improve its practicability.