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3 Result(s) for ' Energy Storage'
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1.
Simulation of a ZEB Electrical Balance with aHybrid Small Wind/PV
Mohammad Sameti, Alibakhsh Kasaeian, Fatemeh Razi Astaraie
Sustainable Energy. 2014 2 (1). doi: 10.12691/rse-2-1-2
Keywords: Zero Energy Building (ZEB), Energy Storage , Energy Cost Optimization
Context: Electricity production from modern renewable technologies (wind energy, solar energy, water power in small scale, and geothermal energy) is growing rapidly worldwide. In addition to the large-scale power generation, applications in the residential sector is also of interest which are classified into stand-alone systems (without connecting to the grid) and grid-connected systems. Zero energy building (ZEB) is a concept based on minimized energy demand and maximized harvest of local renewable energy resources. In this paper, the electrical energy consumption of a typical residential building is modeled. In addition to the electrical grid, the house is connected to a hybrid wind turbine and photovoltaic array together with a battery storage system. The cost of electricity purchased from the electrical grid was optimized to its minimum level. The results showed that, considering a load profile with 21.675 kWh of daily consumption, a 3 kW PV array with a 2 kW wind turbine and a 5 kWh battery could save 96% of the monthly electricity bill; from 2’377 to 66’960dollars. Excluding battery storage, this saving was reduced to 74%.
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2.
Utility-Scale Wind-Based Hybrid Power Plants and Control Strategy
Shree Om Bade, Olusegun Tomomewo, Ajan Meenakshisundaram
Sustainable Energy. 2023 11 (1). doi: 10.12691/rse-11-1-2
Keywords: Battery Energy Storage system, control strategy, hybrid power plant, solar power plant, wind power plant
Context: This study focuses on the control strategy for active power management in utility-scale co-located hybrid power plants (HPPs) comprising wind, solar, and battery storage system. With the increasing importance of environmental impacts and incentives for renewable energy, hybrid power plants have become an attractive option for plant developers. However, there is a lack of research on the control strategies and framework of these HPPs, particularly at the utility-scale when multiple sub-technologies are involved. The proposed control strategy incorporates a supervisory control framework with a focus on establishing oversight of active power among hybrid power plants and enhanced interaction with different technologies. Using MATLAB simulations and a dynamic model, the performance of the suggested control is tested under different operational and weather conditions. The proposed control strategy for active power management can contribute to bridging the gap in knowledge and improving the controllability and efficiency of utility-scale co-located HPPs.
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3.
Graphene – Exciting Insights into the Synthesis and Chemistry of the Miracle Material of the 21st Century and Its Implementation in Chemistry Lessons for the First Time
Andreas Schedy, Dominik Quarthal, Marco Oetken
World Journal of Chemical Education. 2018 6 (1). doi: 10.12691/wjce-6-1-8
Keywords: electrical Energy Storage systems, supercapacitors, graphene, structure-property relationships
Context: The two-dimensional modification of carbon which is also known as “graphene” is an extremely interesting material due to its physical properties, such as a very high electrical conductivity and an intrinsic mechanical strength that is even better than that of steel. For that reason, it has already been called the “miracle material“ of the 21st century. Up to now, the synthesis of graphene was to dangerous to implement it into the school curricula. The authors present a method of synthesizing graphene which can be put into practice at school without hesitation. Following experiments show the varying properties of graphene oxide and graphene during synthesis. In this way, different structure-property relationships, which appear to be one of the most important concepts in chemistry lessons, can be analyzed.
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