Techno-Economic and Environmental Analysis of a Hybrid PV-WT-PSH/BB Standalone System Supplying Various Loads

Mohammed Guezgouz,Jakub Jurasz,Benaissa Bekkouche

doi:10.3390/en12030514

Mohammed Guezgouz, Jakub Jurasz + Show 1 more

Open Access

https://doi.org/10.3390/en12030514

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Abstract

The Algerian power system is currently dominated by conventional (gas- and oil-fueled) power stations. A small portion of the electrical demand is covered by renewable energy sources. This work is intended to analyze two configurations of renewables-based hybrid (solar–wind) power stations. One configuration was equipped with batteries and the second with pumped-storage hydroelectricity as two means of overcoming: the stochastic nature of the two renewable generators and resulting mismatch between demand and supply. To perform this analysis, real hourly load data for eight different electricity consumers were obtained for the area of Mostaganem. The configuration of hybrid power stations was determined for a bi-objective optimization problem (minimization of electricity cost and maximization of reliability) based on a multi-objective grey-wolf optimizer. The results of this analysis indicate that, in the case of Algeria, renewables-based power generation is still more expensive than electricity produced from the national grid. However, using renewables reduces the overall CO2 emissions up to 9.3 times compared to the current emissions from the Algerian power system. Further analysis shows that the system performance may benefit from load aggregation.

Highlights

Numerous countries have changed their policies and adopted alternative energy sources because of the depletion of fossil fuels and the worrying wave of global warming, alongside the increasing costs of energy [1,2]
Acquisition and analysis of electrical load and the renewable energy sources availability time series is a critical step in the design of standalone hybrid PV–WT–Storage systems
Our research shows that covering aggregated loads based on the renewable energy sources hybrid systems is more effective

Summary

Introduction

Numerous countries have changed their policies and adopted alternative energy sources because of the depletion of fossil fuels and the worrying wave of global warming, alongside the increasing costs of energy [1,2]. To meet these multiple challenges, Algeria has announced, through its state-managed energy company Sonelgaz, the implementation of three projects, namely the national renewable energy development program (2015–2030); the energy efficiency program and another that concerns twenty villages in southern Algeria [1,3]. One of the promising options to increase renewable penetration requires efficient use of energy storage technologies; this should ensure a smooth transition from an energy system dominated by conventional power stations to one based on renewables [5]

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