Feasibility and optimal sizing analysis of stand-alone hybrid energy systems coupled with various battery technologies: A case study of Pelee Island
Reza Babaei, David S.‐K. Ting, Rupp Carriveau
Abstract
Selection of the best component arrangement and sizing measurement for hybrid energy systems (HES) is vital to provide a reliable, consistent, and cost-effective energy supply. This study investigates a techno-economic feasibility analysis of stand-alone HES on Western side of Pelee Island, Canada, whose load is 2426 kWh/day. Several hybridization cases, including diesel (DG), wind (WT), and solar (PV) energy generation, coupled with converters (CNV) and four different battery-electric storage technologies, are explored for technical and economic suitability. The battery architectures involve Scenario I: 1 kWh Lead Acid (LA), Scenario II: 1 kWh Li-Ion, Scenario III: 100 kWh Li-Ion, and Scenario IV: 2.5 kWh PowerSafe (SBS). The results favored the Scenario II solution: 152 kW PV module, 200 kW DG, 190 kW CNV when integrated with 853 kWh Li-Ion battery which has the lowest NPC and LCOE by $3.67M and 0.321$/kWh, respectively. Fuel price and solar irradiance of LA-based systems are more sensitive to renewable fraction and less sensitive to LCOE.1 kWh Li-Ion battery-based hybrid options maintain their lowest LCOE and NPC over variation of fuel price, irradiance, and required load. Unmet load comparison reveals that PV/WT/DG/100 kWh Li-Ion and PV/WT/2.5 kWh SBS, respectively, are the most and least reliable hybrid cases. When comparing storage throughput, it is expected that 100 kWh Li-Ion batteries would be more efficient and have a longer service life than 2.5 kWh SBS batteries.