Allocation of transmission losses using three different proportional sharing methods

Recently, allocation transmission losses have become a major issue in both regulated and deregulated system. Two main reasons for this are performance and costs issues. Consequently, there have been a large number of investigations undertaken in the area of transmission loss allocation. These methods encompass a wide variety of techniques ranging from proportional sharing, pro-rata to incremental methods (marginal allocation, and unsubsidised marginal allocation). The issue of loss allocation is going to be at forefront of the discussions due to recent deregulation and privatisation attempts in Indonesia. In this paper after a brief statement of loss allocation problem we will provide a detailed comparison of three alternative algorithms from the proportional sharing (PS) approaches: Power Flow Tracing, Proportional Sharing Allocation, and Tracing Active - Reactive Power Flow method. A 4-bus simple meshed network will be used to test these methods. The results of the calculations will be compared with each other and then conclusions about the applicability of PS approach in Indonesia will be stated.