A Simple Method to Estimate Power Losses in Distribution Networks

This paper presents a simple approximated formulas to estimate active and reactive power losses in distribution networks. The developed formulas are derived from Elgerd’s power loss formulas considering load profiles. A simple model is also proposed to estimate the load profile based on several parameters, such as an average of load demand and load limitations. Derivation of the load model and loss formulas are given along with their application on a sample distribution system. The results show that the loss formulas depending on the proposed load profile can estimate the power losses in distribution networks with high precision.