Optimal Operation of the Water-Energy Supply System in an Islanded Microgrid with Several Energy Carriers to Improve Resilience Against Cyber Attacks

Multi-energy microgrids, rely on energy conversion facilities, supply a flexible and highly efficient framework to meet a variety of water and energy needs. The increase in the energy demand and the shortage of potable water are major concerns in today's world. As water infrastructure requires significant energy to operate, This resulting in increased interdependence between water and energy systems. This paper provides an integrated water-energy management solution for an islanded microgrid to meet the demands of electricity, heating, cooling, and potable water with minimum cost. The proposed microgrid is equipped with combined power and heat units, absorption chillers, electric and gas boilers, wind turbines, desalination units, and various energy storage devices. The cost function is expressed as a mixed integer programming problem. Scenario-based stochastic programming is used to model uncertainties related to energy demand and wind power generation. In addition, to account for cyber attacks on wind turbines, the suggested scheduling model utilizes information-based decision theory, which allows the operator to make his schedule robust against cyber attacks on wind turbines at an acceptable cost. Considering the energy carriers other than electricity and water along with the Utilization of the concept of resilience to optimally operate the water-energy supply system in an islanded microgrid is the innovation of the proposed model. Numerical results show that the operator can reduce the effect of cyber attacks on the operation cost without the presence of water-energy storage systems by 1.5% and in the presence of these resources by 10%, which will increase the system's resilience against such attacks.