Distributed Energy-Sharing Strategy for Peer-to-Peer Microgrid System

Abstract

The rapid growth of renewable distributed generation (RDG) requires further development of the electricity market for distributed energy. This paper proposes an energy-sharing platform as the energy management model with the distributed battery energy storage system (BESS) and RDG, and this platform can be compared with a banking system in which various kinds of energy participants, including energy users, energy generators, and energy storage devices, can transfer both energy and price. Furthermore, up-reserve (UR) is defined in the distributed BESS to quantize the charging energy value for energy management. Moreover, the pricing model is optimized by game theory with the Bayesian Nash equilibrium (BNE) algorithm, and the call-auction method is the trading mechanism with the rule of maximum transaction volume. Real historical data in the Australian electrical market were used for the case study. The participants’ profit of with-game-theory was higher than without-game-theory in this energy-sharing platform.