<p>Recently, exploring environmentally friendly and cost-effective energy use is considered globally a vital aspect of concerns dealing with energy security and environmental quality. Therefore, for accomplishing the reliability, flexibility, and efficiency aspects in the multiple power systems, the energy hub (EH) is utilized for transmitting, exchanging, and storing various energy types in the microgrids. In this regard, this paper proposes an optimal EH operation model to reduce the overall system costs. The considered EH is comprehensive by involving a heat storage unit (HS), combined cooling, heat and power unit, photovoltaic (PV) arrays, gas boiler, and wind turbine (WT). Further, the proposed model considers solar-powered compressed air energy storage (SPCAES), cooling storage (CS), and electric vehicles during their charging periods for different seasons. The proposed model takes into account the stochastic behavior of intermittent PV and WT generations along with electrical, thermal, and cooling requirements for different seasons. To demonstrate the effectiveness of the proposed model, four scheduling scenarios are performed with different energy storage units in each scenario. The results show that the total costs are decreased by 2.51% by implementing the CAES with the CS units, while they are reduced by 3.15% by implementing the SPCAES and CS units. It is demonstrated that by the optimal selection of the energy storage sources connected to the EH, the final costs are significantly reduced with intermittent PV and WT units.</p>

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Optimal Operation of Energy Hub-Based Microgrids with Intermittent RESs and Multi-type Energy Storage Systems

  • Shaimaa A. M. Mousa,
  • Abdelfatah Ali,
  • Karar Mahmoud,
  • Essam E. M. Mohamed

摘要

Recently, exploring environmentally friendly and cost-effective energy use is considered globally a vital aspect of concerns dealing with energy security and environmental quality. Therefore, for accomplishing the reliability, flexibility, and efficiency aspects in the multiple power systems, the energy hub (EH) is utilized for transmitting, exchanging, and storing various energy types in the microgrids. In this regard, this paper proposes an optimal EH operation model to reduce the overall system costs. The considered EH is comprehensive by involving a heat storage unit (HS), combined cooling, heat and power unit, photovoltaic (PV) arrays, gas boiler, and wind turbine (WT). Further, the proposed model considers solar-powered compressed air energy storage (SPCAES), cooling storage (CS), and electric vehicles during their charging periods for different seasons. The proposed model takes into account the stochastic behavior of intermittent PV and WT generations along with electrical, thermal, and cooling requirements for different seasons. To demonstrate the effectiveness of the proposed model, four scheduling scenarios are performed with different energy storage units in each scenario. The results show that the total costs are decreased by 2.51% by implementing the CAES with the CS units, while they are reduced by 3.15% by implementing the SPCAES and CS units. It is demonstrated that by the optimal selection of the energy storage sources connected to the EH, the final costs are significantly reduced with intermittent PV and WT units.