Developing a Micro-Grid modeling approach for Nasser Medical Complex energy demand in the Gaza Strip

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Abstract
In Gaza Strip, power outages lasting several hours daily are very common. In addition, today’s power systems are facing challenges of environmental protection, increasing global power demand, and high reliability requirements. Centralized plants are now being replaced by smaller, distributed plants to pave the way to green and intelligent energy systems. The microgrid concept can therefore be viewed as a group of distributed energy loads and resources that can operate as a single controllable system and encompass many renewable energy sources and energy storage systems. For the microgrid system to operate reliably, energy management of a large number of distributed energy resources is required. As a result, energy management is a critical component of microgrid operation for economic and sustainable development. In this paper, the primary goal is to look into the feasibility of installing a microgrid system for Nasser medical complex. A techno-economic analysis of the capex, savings, and financial benefit of numerous microgrid possibilities is used to justify the final design. Using the HOMER Pro tools, several scenarios and architectures were simulated and discussed in terms of their specific requirements, features, and drawbacks. The scenarios are based on different alternatives, such as replacing a plant (which consists of a diesel generator) with a solar photovoltaic (PV) system and a battery-backed energy storage system (BESS). The simulations show that Scenario 4 (Hybrid PV system with Li-Ion batteries) is the optimal configuration regarding the economic indicators. The results clearly demonstrate that an annual grid power cost of 1.70M${\$}$, fuel costs of 0.40 M${\$}$, and operating costs of 0.66M${\$}$, with an annualized savings of 0.36 M${\$}$. The hybrid approach proposed in this situation has a 48.5% IRR, a payback period of 2.06 years, and an LCOE of 181 ${\$}$/MWh.

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