Energy loss estimation: A mathematical approach

Abstract

This work focuses on energy loss estimation in electrical sub transmission and distribution systems. The earliest empirical approaches, by Buller and Woodrow in 1928 and Hoebel in 1959, were modified by M.W. Gustafson in 1983, by changing the values of the coefficients and adding a constant loss term. It has been observed that this approach is not suitable for the present load scenario. In this paper, a new approach has been proposed and tested with real time data. It has been concluded that the relation ship between loss factor and load factor is not as complicated as perceived but easily understandable. By using exponential curve fitting, a relationship that is very close to reality can be obtained. An exponential curve has the ability to take on any shape between two given limits, based on the specified data. To verify the proposed approach data has been collected from a 33kV sub transmission line existing between 132kV/33kV Turkayamjal substation & 33kV/11kV Hayatnagar substation, APTRANSCO, Andhra Pradesh. © 2013 Springer-Verlag.