Battery Sizing Based on the Energy Lack and Surplus Analysis in a Stand-Alone Photovoltaic System

Abstract

The need of electricity in the world is increasing continuously, hence the emergency to resort to the exploitation of renewable energies especially for some countries like Morocco. Despite the different advantages of these energies, these are also characterized by two harmful aspects, particularly the intermittency and the difficulty of storage. In order to avoid such barriers, most researchers and industrials prefer to invest in renewable energy systems connected to the grid or other continuous energy source to meet regularly electrical needs. However, the purpose of this article is to focus on the analysis of a storage system for an off grid photovoltaic system. The goal is then to optimize the storage capacity of the installation by minimizing the oversizing which causes losses and high costs. In our article, we focused on the design of a virtual photovoltaic system located in a rural area of Errachidia in Morocco. We estimated the energy required by the load, also the necessary power of the photovoltaic field, then we estimated the Surplus and the Lack generated throughout the year based on the meteorological data of the site. Analysis of these virtual estimates can allow us to define the real required battery capacity and the appropriated number of autonomy days in order to avoid consequently oversizing.

Hybrid PV-Battery System Evaluation in Baghdad: ICOE and NPV Analysis using SAM Software

“…Moreover, the declining prices of PV components in recent years have made the initial cost of solar batteries more affordable. In order to determine the viability of the storage system in this specific scenario, it is crucial to identify the necessary photovoltaic field and battery capacity [5]. In summary, Hybrid residential PV-battery systems are necessary in regions where connecting to the grid is possible, offering flexibility, steadiness, and a dependable power supply.…”