scholarly journals Optimizing the Size of Autonomous Hybrid Microgrids with Regard to Load Shifting

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5059
Author(s):  
Alexander Lavrik ◽  
Yuri Zhukovskiy ◽  
Pavel Tcvetkov

The article proposes a method of multipurpose optimization of the size of an autonomous hybrid energy system consisting of photovoltaic, wind, diesel, and battery energy storage systems, and including a load-shifting system. The classical iterative Gauss–Seidel method was applied to optimize the size of a hybrid energy system in a remote settlement on Sakhalin Island. As a result of the optimization according to the minimum net present value criterion, several optimal configurations corresponding to different component combinations were obtained. Several optimal configurations were also found, subject to a payback period constraint of 5, 6, and 7 years. Optimizing the size of the hybrid power system with electric load shifting showed that the share of the load not covered by renewable energy sources decreases by 1.25% and 2.1%, depending on the parameters of the load shifting model. Net present cost and payback period also decreased, other technical and economic indicators improved; however, CO2 emissions increased due to the reduction in the energy storage system.

2018 ◽  
Vol 07 (03) ◽  
pp. 142-159 ◽  
Author(s):  
Frederico A. During Fo ◽  
Alexandre Beluco ◽  
Elton G. Rossini ◽  
José de Souza

2021 ◽  
Vol 33 ◽  
pp. 101887
Author(s):  
Abderraouf Bouakkaz ◽  
Antonio J. Gil Mena ◽  
Salim Haddad ◽  
Mario Luigi Ferrari

2019 ◽  
Vol 11 (20) ◽  
pp. 5743 ◽  
Author(s):  
Higinio Sánchez-Sáinz ◽  
Carlos-Andrés García-Vázquez ◽  
Francisco Llorens Iborra ◽  
Luis M. Fernández-Ramírez

The global energy system is changing, mainly to achieve sustainable transport technologies and clean electrical generation based on renewable sources. Thus, as fuels, electricity and hydrogen are the most promising transport technologies in order to reduce greenhouse emissions. On the other hand, photovoltaic and wind energies, including energy storage, have become the main sources of distributed generation. This study proposes a new optimal-technical sizing method based on the Simulink Design Optimization of a stand-alone microgrid with renewable energy sources and energy storage to provide energy to a wireless power transfer system to charge electric vehicles along a motorway and to a hydrogen charging station for fuel cell-powered buses. The results show that the design system can provide energy for the charging of electric vehicles along the motorway and produce the hydrogen consumed by the fuel cell-buses plus a certain tank reserve. The flexibility of the study allows the analysis of other scenarios, design requirements, configurations or types of microgrids.


Author(s):  
PAVAN R. PADGHAN ◽  
P.K. KATTI

This paper describe of a renewable energy based hybrid energy system with MATLAB implementation results. In order to meet sustained load demand during varying natural conditions, different renewable energy sources need to be integrated with each other. This paper focuses on the combination of wind/fuel cell hybrid energy system. As wind turbine output power varies with wind speed & FC systems can be integrated to ensure that the system performs under all conditions. The result show that the proposed hybrid energy system can be tolerate the rapid change in natural condition and suppress the effect of the fluctuation on the voltage wind turbine the acceptable range.


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