Title :
Energy Flow in Electric Systems- the Vi Energy-Flow Postulate
Author_Institution :
Associate director of research, research laboratories, Westinghouse Electric and Manufacturing Company, East Pittsburgh, Pa.
Abstract :
The conditions which a valid postulated electric-energy flow must satisfy are given and are stated to be insufficient for its unique determination. The commonly used Vi energy-flow postulate is shown by examples to be not generally valid, but by adding a simple term it can be made equally valid with other valid energy-flow postulates. Various examples are given of the application of this corrected energy-flow postulate. On power systems the engineer commonly limits his use of the uncorrected Vi postulate to applications where the correcting term should have a negligible net effect. Various examples of such use are discussed.
Keywords :
Conductors; Electric variables measurement; Electromagnetic fields; Electromagnetic measurements; Energy measurement; Inductors; Magnetic field measurement; Potential energy; Power engineering and energy; Wattmeters;
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
DOI :
10.1109/T-AIEE.1942.5058450
