Co-operative P2P Trading and Voltage Regulation Service in Unbalanced Distribution Networks

Peer-to-peer(P2P) energy trading is one of the emerging concepts regarding local energy trading in the area of active distribution networks. It is believed to enhance the renewable energy utilization at the distribution level. In this paper, a joint operation model is proposed to embrace P2P energy trading, flexible demand, and reactive power resources in a distribution grid with unbalanced power flows. In particular, we integrate the transactive market design with the three-phase optimal power flow to cope with possible network constraint violations while minimizing the social cost. Simulation results on a modified IEEE 37-bus distribution system demonstrate that the proposed co-operation optimization outperforms sequential optimization in both reducing the operation cost and improving the voltage regulation profiles.