Transaction-Tracing Based Loss Allocation in Distribution Networks Under TE System

Abstract

With distributed energy resources momentum undoubtedly underway at the distribution level, there is a call for new flexible coordination mechanisms that permit the prosumers to engage in the local transactions. The transactive energy system is posited to afford such energy marketplace in the retail zone that facilitates the energy transactions between local entities through peer-to-peer contracts. Under such agreement, prosumer can sell its excess power to consumers by participating in energy trading. However, significant losses will incur in the distribution network due to energy transport between the buyers and sellers. This calls for an efficient and fair loss allocation framework. Moreover, the adopted allocation mechanism must consider the unbalanced nature of power flow allied to the distribution system for effective recovery. With this view, this article presents a transaction-tracing based loss allocation scheme for assigning the network losses incurred due to the transactions occurring between peers in a dynamic environment. The transaction paths of a 3Phase-4Wire system are derived using a graph-based method. The analysis is executed on a 33-bus distribution network and the results are compared with the branch current decomposition method to confirm the impartiality of the proposed approach. The result shows that the devised method performs well under different loadings and allocates the losses fairly between the network participants during all transactions.