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A hybrid method for scenario-based techno-economic-environmental analysis of off-grid renewable energy systems.

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Title: A hybrid method for scenario-based techno-economic-environmental analysis of off-grid renewable energy systems.
Authors: Javed, Muhammad Shahzad1 (AUTHOR) shahzad.sjtu@yahoo.com, Ma, Tao1 (AUTHOR) tao.ma@connect.polyu.hk, Jurasz, Jakub2,3,4 (AUTHOR), Mikulik, Jerzy3 (AUTHOR)
Source: Renewable & Sustainable Energy Reviews. Apr2021, Vol. 139, pN.PAG-N.PAG. 1p.
Subjects: Simulated annealing, Carbon dioxide, Environmental standards, Rural electrification
Abstract: Researchers have often overlooked the emissions problem during the suitable selection of renewable energy (RE) systems. Therefore, there is a need for an integrated framework that simultaneously considers the economic, technical and environmental criteria for the selection of the appropriate configuration. Firstly, a multi-objective optimization is performed using the ε − constraint method with a simulated annealing algorithm. Then a scenario-based method with a hybrid multi-criterion decision-making approach is used to rank all the available configurations. Five operating strategies are developed to make different configurations, i.e. battery only, pumped hydro storage (PHS), battery–diesel generator (DG), PHS–DG, and hybrid pumped–battery storage. A total of seven scenarios are made based on the weightage given to each main criterion. The study reveals that solar–wind–PHS–DG was the top-ranking alternative under four scenarios, solar–wind–PHS ranked first in two scenarios, and solar–wind–DG–battery got preference under the no-preference scenario; this shows that preferential selection (assigning a weighting to each criterion) significantly affects results. Emissions of all considered RE-based alternatives range from 0.072 to 0.148 kg (CO 2 equivalent) per kWh of the served load. Furthermore, sensitivity analysis reveals that technical criteria conflict more with economic criteria than with environmental criteria. The impact of land requirements (an environmental sub-criterion) is visible in this study, indicating the high requirement of land for RE systems. The most appropriate configuration type is selected depending solely on the priorities defined by investors and policy-makers. • A hybrid method is introduced for techno-economic-environmental analysis. • Fifteen different alternate configurations are modelled and ranked under seven scenarios. • Pumped hydro storage based configurations top ranked among all alternatives. • Emissions of renewable energy systems range from 0.072 to 0.148 kg per kWh of served load. • The approach allows policy-makers to specify priorities for criteria as an input. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Researchers have often overlooked the emissions problem during the suitable selection of renewable energy (RE) systems. Therefore, there is a need for an integrated framework that simultaneously considers the economic, technical and environmental criteria for the selection of the appropriate configuration. Firstly, a multi-objective optimization is performed using the ε − constraint method with a simulated annealing algorithm. Then a scenario-based method with a hybrid multi-criterion decision-making approach is used to rank all the available configurations. Five operating strategies are developed to make different configurations, i.e. battery only, pumped hydro storage (PHS), battery–diesel generator (DG), PHS–DG, and hybrid pumped–battery storage. A total of seven scenarios are made based on the weightage given to each main criterion. The study reveals that solar–wind–PHS–DG was the top-ranking alternative under four scenarios, solar–wind–PHS ranked first in two scenarios, and solar–wind–DG–battery got preference under the no-preference scenario; this shows that preferential selection (assigning a weighting to each criterion) significantly affects results. Emissions of all considered RE-based alternatives range from 0.072 to 0.148 kg (CO 2 equivalent) per kWh of the served load. Furthermore, sensitivity analysis reveals that technical criteria conflict more with economic criteria than with environmental criteria. The impact of land requirements (an environmental sub-criterion) is visible in this study, indicating the high requirement of land for RE systems. The most appropriate configuration type is selected depending solely on the priorities defined by investors and policy-makers. • A hybrid method is introduced for techno-economic-environmental analysis. • Fifteen different alternate configurations are modelled and ranked under seven scenarios. • Pumped hydro storage based configurations top ranked among all alternatives. • Emissions of renewable energy systems range from 0.072 to 0.148 kg per kWh of served load. • The approach allows policy-makers to specify priorities for criteria as an input. [ABSTRACT FROM AUTHOR]
ISSN:13640321
DOI:10.1016/j.rser.2021.110725