Design and Comparative Analysis of Hybrid Energy Systems for Grid-Connected and Standalone Applications in Tunisia: Case Study of Audiovisual Chain

Abstract

In this research paper, a technical and economic-environmental study was developed to investigate the possibility of establishing various hybrid power systems with different operation modes. Grid-connected and standalone hybrid systems (solar-wind with storage batteries and diesel generators) have been realized in order to carry out a comparative analysis study of two configurations. These systems have been investigated through the Hybrid Multi-Energy Resource Optimization software (HOMER), which calculates pollutant gas emissions, simulates and optimizes energy consumption based on energy demand and resources. As part of the economic analysis, the internal rate of return, the net present value and the payback period were estimated. Both configurations have been developed to meet the power consumption of an audiovisual system. The results obtained show that the first system is the most cost-effective to establish, considering in particular the energy production potential and gas emissions. It can be stated that the proffered grid-connected hybrid system is the most suitable and cost-effective system as it offers several advantage. The total net present cost is $5.425million and the total energy cost is approximately $0.0686 per unit.