Power Restoration in Integrated Power and Gas Distribution Grids

Integration of power and gas grids has recently attracted significant attention from researchers around the globe. Utilization of power-to-gas (PtG) and gas-fired generation (GfG) facilities can allow bi-directional energy flow between the two grids. In such a case, PtG and GfG facilities can be jointly operated for multiple purposes including power restoration within an integrated power and gas grid. To that end, this paper proposes a new optimization-based model for power restoration in an integrated power and gas distribution grid. Besides, the model aims to schedule PtG and GfG units for exploiting gas and electricity price arbitrage opportunities in the market. Using historical values of optimization variables, the participation of PtG and GfG facilities in power restoration is measured. A 33-bus power distribution grid is integrated with a 7-node gas grid and employed for numerical studies. The results demonstrate that utilization of PtG and GfG units for power restoration in addition to the main functionality of arbitrage brings a larger revenue for the PtG and GfG units operator. As such, the proposed model in this paper can open up new opportunities for proliferation of PtG and GfG systems and facilitate the integration of power and gas grids in the near future.