An exact method for loss allocation in radial distribution systems

Abstract

This paper presents an exact method for real power loss allocation to consumers connected to radial distribution networks in a deregulated environment. The proposed method has the advantage that no assumptions are made in the allocation of real power losses as opposed to the algorithms available in the literature. A detailed comparison of the real loss allocation obtained with the proposed ‘Exact method’ with two alternative algorithms, namely, pro rata (PR), and quadratic loss allocation schemes are presented. Pro rata procedure is based on the load demand of each consumer, quadratic allocations are based on identifying the real and reactive parts of current in each branch and the losses are allocated to each consumer, and the proposed ‘exact method’ is based on the actual contribution of real power loss by each consumer. A case study based on 30 node distribution system is provided.