Zero Energy Trading Strategy for Enhancing Resilience of Networked Microgrids

Abstract

This paper proposes a zero electricity energy trading strategy in order to enhance the resilience of a distribution network with multiple microgrids (MGs) against extreme events. In some time intervals, the generation capacity of an MG may be higher than its consumption whereas in other intervals consumption may be exceeded of its maximum generation capacity. By adopting this strategy, MGs with surplus generation capacities can support other MGs to compensate their power deficiency. Each MG exchanges energy such that its exporting and importing energy be equal for a certain time period. The problem is formulated as a two-stage optimization problem in which each MG can selfishly and independently minimize its operating cost in a decentralized way. Numerical results demonstrate the effectiveness of the proposed method to enhance resilience without imposition extra cost to normal MGs.