scholarly journals Daily Operation Optimization of a Hybrid Energy System Considering a Short-Term Electricity Price Forecast Scheme

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 924 ◽  
Author(s):  
Pedro Bento ◽  
Hugo Nunes ◽  
José Pombo ◽  
Maria Calado ◽  
Sílvio Mariano
Keyword(s):  
Energy Systems ◽  
Energy System ◽  
Short Term ◽  
Operation Optimization ◽  
Hybrid Energy ◽  
Price Forecast ◽  
Hybrid Energy Systems ◽  
The Cost ◽  
Transportation Electrification ◽  
Installed Capacity

The scenario where the renewable generation penetration is steadily on the rise in an increasingly atomized system, with much of the installed capacity “sitting” on a distribution level, is in clear contrast with the “old paradigm” of a natural oligopoly formed by vertical structures. Thereby, the fading of the classical producer–consumer division to a broader prosumer “concept” is fostered. This crucial transition will tackle environmental harms associated with conventional energy sources, especially in this age where a greater concern regarding sustainability and environmental protection exists. The “smoothness” of this transition from a reliable conventional generation mix to a more volatile and “parti-colored" one will be particularly challenging, given escalating electricity demands arising from transportation electrification and proliferation of demand-response mechanisms. In this foreseeable framework, proper Hybrid Energy Systems sizing, and operation strategies will be crucial to dictate the electric power system’s contribution to the “green” agenda. This paper presents an optimal power dispatch strategy for grid-connected/off-grid hybrid energy systems with storage capabilities. The Short-Term Price Forecast information as an important decision-making tool for market players will guide the cost side dispatch strategy, alongside with the storage availability. Different scenarios were examined to highlight the effectiveness of the proposed approach.

scholarly journals Accessibility and Sustainability of Hybrid Energy Systems for a Cement Factory in Oman

2020 ◽  
Vol 13 (1) ◽  
pp. 93
Author(s):  
Wesam H. Beitelmal ◽  
Paul C. Okonkwo ◽  
Fadhil Al Housni ◽  
Wael Alruqi ◽  
Omar Alruwaythi
Keyword(s):  
Functional Limitations ◽  
Energy Systems ◽  
Energy System ◽  
Electricity Production ◽  
Diesel Generator ◽  
Hybrid Energy ◽  
Electric System ◽  
Cement Factory ◽  
Hybrid Energy Systems ◽  
Cost Of Energy

Diesel generators are being used as a source of electricity in different parts of the world. Because of the significant expense in diesels cost and the requirement for a greener domain, such electric generating systems appear not to be efficient and environmentally friendly and should be tended to. This paper explores the attainability of utilizing a sustainable power source based on a cross-breed electric system in the cement factory in Salalah, Oman. The HOMER software that breaks down the system setup was utilized to examine the application and functional limitations of each hybridized plan. The result showed that a renewable-energy (RE)-based system has a lower cost of energy (COE) and net present cost (NPC) compared to diesel generator-based hybrid electric and standalone systems. Although the two pure renewable hybrid energy systems considered in this study displayed evidence of no emissions, lower NPC and COE values are observed in the photovoltaic/battery (PV/B) hybrid energy system compared with photovoltaic/wind turbine/battery (PV/WT/B). The PV/WT/B and PV/B systems have higher electricity production and low NPC and COE values. Moreover, the PV/B has the highest return on investment (ROI) and internal rate of return (IRR), making the system the most economically viable and adjudged to be a better candidate for rural community electrification demands.

scholarly journals Techno-Economic Evaluation of Interconnected Nuclear-Renewable Micro Hybrid Energy Systems with Combined Heat and Power

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1642 ◽  
Author(s):  
Hossam A. Gabbar ◽  
Muhammad R. Abdussami ◽  
Md. Ibrahim Adham
Keyword(s):  
Fossil Fuel ◽  
Renewable Energy Sources ◽  
Ghg Emissions ◽  
Energy Systems ◽  
Energy System ◽  
Combined Heat And Power ◽  
Small Scale ◽  
Hybrid Energy ◽  
Hybrid Energy Systems ◽  
The Impact

Renewable energy sources (RESs) play an indispensable role in sustainable advancement by reducing greenhouse gas (GHG) emissions. Nevertheless, due to the shortcomings of RESs, an energy mix with RESs is required to support the baseload and to avoid the effects of RES variability. Fossil fuel-based thermal generators (FFTGs), like diesel generators, have been used with RESs to support the baseload. However, using FFTGs with RESs is not a good option to reduce GHG emissions. Hence, the small-scale nuclear power plant (NPPs), such as the micro-modular reactor (MMR), have become a modern alternative to FFTGs. In this paper, the authors have investigated five different hybrid energy systems (HES) with combined heat and power (CHP), named ‘conventional small-scale fossil fuel-based thermal energy system,’ ‘small-scale stand-alone RESs-based energy system,’ ‘conventional small-scale fossil fuel-based thermal and RESs-based HES,’ ‘small-scale stand-alone nuclear energy system,’ and ‘nuclear-renewable micro hybrid energy system (N-R MHES),’ respectively, in terms of net present cost (NPC), cost of energy (COE), and GHG emissions. A sensitivity analysis was also conducted to identify the impact of the different variables on the systems. The results reveal that the N-R MHES could be the most suitable scheme for decarbonization and sustainable energy solutions.

scholarly journals Optimal Operations Management of Hybrid Energy Systems Through Short-Term Atmospheric and Demand Forecasts

2019 ◽  
Vol 39 ◽  
pp. 702-711
Author(s):  
Francesca Calabrese ◽  
Mauro Gamberi ◽  
Giovanni Lelli ◽  
Riccardo Manzini ◽  
Francesco Pilati ◽  
...  
Keyword(s):  
Operations Management ◽  
Energy Systems ◽  
Short Term ◽  
Hybrid Energy ◽  
Hybrid Energy Systems ◽  
Demand Forecasts

Economic Modeling of Hybrid Energy System

2013 ◽  
Author(s):  
Olumide Bello ◽  
Da’Janel Roberts-Smith ◽  
Landon Onyebueke
Keyword(s):  
Rural Communities ◽  
High Performance ◽  
Low Cost ◽  
Energy Systems ◽  
Energy System ◽  
Economic Modeling ◽  
Sustainable Mobility ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Hybrid Energy Systems

Hybrid Energy Systems (HES) offer hopeful solutions to an array of challenges circumventing conventional energy usage. From sustainable mobility developments to rural communities, hybrid energy systems can provide reliable energy to suffice any load demand when properly sized. Sizing optimality is essential in maintaining low-cost, high-performance and superior efficiency. The methodology for sizing a Photovoltaic-Wind-Diesel with battery backup hybrid energy system and its accompanying costs are calculated using Homer software. The results are presented in this article. Such costs include the concept of levelized cost of energy (LCOE), time-dependent trade-off considerations necessary to deploy a functional, reliable and cost-effective energy system and comfort. The anticipated output of this economic model validates the feasibility of attaining affordability and optimality in a HES that relies on renewable energy and battery storage for applications of varying scales.

Optimum Design of Standalone Hybrid Energy Systems Minimizing Waste of Renewable Energy

2016 ◽  
Author(s):  
A. T. D. Perera
Keyword(s):  
Renewable Energy ◽  
Fuel Consumption ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy System ◽  
Energy Sources ◽  
Solar Pv ◽  
Energy Potential ◽  
Hybrid Energy ◽  
Hybrid Energy Systems

The importance of integrating renewable energy sources into standalone energy systems is highlighted in recent literature. Maintaining energy efficiency is challenging in designing such hybrid energy systems (HES) due to seasonal variation of renewable energy potential. This study evaluates the limitations in minimizing the losses in renewable energy generated mainly due to energy storage limitations and minimizing fuel consumption of the internal combustion generator (ICG). A standalone hybrid energy system with Solar PV (SPV), wind, battery bank and an ICG is modeled and optimized in this work. Levelized Energy Cost (LEC), Waste of Renewable Energy (WRE) and Fuel Consumption (FC) are taken as objective functions. Results highlight the importance of considering WRE as an objective function which increase the mix of energy sources that can help to increase the reliability of the system.

Exergy Analysis for Small Modular Reactor Hybrid Energy System

2015 ◽  
Author(s):  
Lauren Boldon ◽  
Piyush Sabharwall ◽  
Li (Emily) Liu
Keyword(s):  
Physical Environment ◽  
Exergy Analysis ◽  
Raw Materials ◽  
Storage System ◽  
Industrial Process ◽  
Energy Systems ◽  
Energy System ◽  
Actual System ◽  
Hybrid Energy ◽  
Hybrid Energy Systems

Nuclear hybrid energy systems (NHES) with the capability to store energy will advance the development of renewable energy technologies by providing reliable, non-carbon emitting, and integrated base-load nuclear energy. Small modular reactors (SMRs) will be significant in establishing hybrid energy systems because of their inherent financial advantages over larger commercial reactors; flexible deployment and faster onsite assembly; and ability to closely match required energy needs for industrial process heat applications. An SMR is a thermal energy plant comprised of many complex systems that interact with each other and their surroundings. To study such a system and set appropriate prices for outputs, it is important to assess thermoeconomics or the effective utility and costs of all resources. At its core, thermoeconomics is based upon the quality of energy, or exergy, flowing into and out of each component within a system. Limited research into the thermoeconomics behind SMRs has been performed, leaving an important gap in understanding. This article presents relevant exergetic cost theory and details methods behind an exergy analysis for an SMR-wind-storage system. To perform this analysis, both the physical and economic environments are identified to provide information on how overall system efficiencies and costs may be analyzed. The physical environment incorporates the actual system components, necessary raw materials, and the surroundings or reference environment. The economic environment refers to the upfront installation and operational costs in addition to market prices. In a purely thermodynamic exergy analysis, the exergetic cost may be determined from the physical environment alone and describes the necessary exergy for production to occur. To improve or optimize a system, system efficiency must be balanced with economics to make NHES more competitive and further their development.

scholarly journals Original Framework for Optimizing Hybrid Energy Supply

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Amevi Acakpovi
Keyword(s):  
Optimization Problem ◽  
Energy Systems ◽  
Energy Generation ◽  
Programming Approach ◽  
Hybrid Energy ◽  
Remote Areas ◽  
Hybrid Energy Systems ◽  
Input Variables ◽  
The Cost

This paper proposes an original framework for optimizing hybrid energy systems. The recent growth of hybrid energy systems in remote areas across the world added to the increasing cost of renewable energy has triggered the inevitable development of hybrid energy systems. Hybrid energy systems always pose a problem of optimization of cost which has been approached with different perspectives in the recent past. This paper proposes a framework to guide the techniques of optimizing hybrid energy systems in general. The proposed framework comprises four stages including identification of input variables for energy generation, establishment of models of energy generation by individual sources, development of artificial intelligence, and finally summation of selected sources. A case study of a solar, wind, and hydro hybrid system was undertaken with a linear programming approach. Substantial results were obtained with regard to how load requests were constantly satisfied while minimizing the cost of electricity. The developed framework gained its originality from the fact that it has included models of individual sources of energy that even make the optimization problem more complex. This paper also has impacts on the development of policies which will encourage the integration and development of renewable energies.

scholarly journals A Review – Renewable energy based micro-cogeneration and hybrid energy systems

2021 ◽  
Vol 294 ◽  
pp. 01004
Author(s):  
Sonja Kallio ◽  
Monica Siroux
Keyword(s):  
Renewable Energy ◽  
High Efficiency ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy System ◽  
Primary Energy ◽  
Hybrid Energy ◽  
Hybrid Renewable Energy System ◽  
Hybrid Energy Systems ◽  
Hybrid Renewable Energy

To reduce carbon and greenhouse gas emissions, the more efficient and environmentally friendly energy production in the building sector is required. The deployment of renewable energy based microcogeneration units in the decentralized hybrid energy systems is a part of the solution. The micro combined heat and power (micro-CHP), or co-generation, units produce simultaneously heat and electricity from a single fuel source at high efficiency and close to the consumption point. These units offer significant benefits: reduced primary energy consumption, reduced CO2 emissions, and avoidance of distribution losses due to central plant and network construction. The objective of this paper is to present a review of available renewable energy based micro-CHP systems and to focus on the biomass and solar based conversion devices. Finally, a novel hybrid renewable energy system is presented by coupling renewable energy sources, such as solar and biomass for micro-CHP.

scholarly journals Potential Techno-Economic Feasibility of Hybrid Energy Systems for Electrifying Various Consumers in Yemen

2020 ◽  
Vol 13 (1) ◽  
pp. 228
Author(s):  
Saif Mubaarak ◽  
Delong Zhang ◽  
Jinxin Liu ◽  
Yongcong Chen ◽  
Longze Wang ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Diesel Engine ◽  
Energy Systems ◽  
Energy System ◽  
Economic Feasibility ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Hybrid Energy Systems ◽  
The Status ◽  
Energy Strategies

Global warming and climate change are becoming a global concern. In this regard, international agreements and initiatives have been launched to accelerate the use of renewable energy and to mitigate greenhouse gas (GHG) emissions. Yemen is one of the countries signed on these agreements. However, Yemen is facing the problem that the structure of the power grid is fragile and the power shortage is serious. Accordingly, this paper aims to study the potential for renewable energy in Yemen and assess the technical and economic feasibility of hybrid energy systems. Firstly, this paper introduces the status and challenges of Yemen’s electricity sector, the status of renewable energy, and the status of GHG emission. Secondly, this study proposes the method of optimizing different configurations of off-grid hybrid (solar/wind/diesel engine) energy systems for electrifying various consumers in Taiz province, Yemen under three scenarios of energy strategies. The objective function is to seek the most optimal hybrid energy system that achieves the least cost and most advantageous technical performance, while instigating the best economic scenario of energy strategies. Finally, Homer pro software is used for simulation, optimization, and sensitivity analysis of the designed energy systems. The results found the best economically feasible scenario, the hybrid PV/wind/diesel energy system, among the other scenarios. A photovoltaic (PV)/wind energy system achieved the best technical performances of 100% CO2 reduction, with a 54.82% reduction in the net present cost (NPC) and cost of energy (COE); while the hybrid energy system (PV/wind/diesel engine) achieved the best economic cost of 61.95% reduction in NPC and COE, with a 97.44% reduction of CO2 emission.

scholarly journals Optimal Sizing and Scheduling of Hybrid Energy Systems: The Cases of Morona Santiago and the Galapagos Islands

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3933
Author(s):  
Pablo Benalcazar ◽  
Adam Suski ◽  
Jacek Kamiński
Keyword(s):  
Fossil Fuels ◽  
Programming Model ◽  
Energy Systems ◽  
Energy System ◽  
Economic Feasibility ◽  
Hybrid Energy System ◽  
Support Tool ◽  
Energy Supply System ◽  
Hybrid Energy ◽  
Hybrid Energy Systems

Hybrid energy systems (HESs) generate electricity from multiple energy sources that complement each other. Recently, due to the reduction in costs of photovoltaic (PV) modules and wind turbines, these types of systems have become economically competitive. In this study, a mathematical programming model is applied to evaluate the techno-economic feasibility of autonomous units located in two isolated areas of Ecuador: first, the province of Galapagos (subtropical island) and second, the province of Morona Santiago (Amazonian tropical forest). The two case studies suggest that HESs are potential solutions to reduce the dependence of rural villages on fossil fuels and viable mechanisms to bring electrical power to isolated communities in Ecuador. Our results reveal that not only from the economic but also from the environmental point of view, for the case of the Galapagos province, a hybrid energy system with a PV–wind–battery configuration and a levelized cost of energy (LCOE) equal to 0.36 $/kWh is the optimal energy supply system. For the case of Morona Santiago, a hybrid energy system with a PV–diesel–battery configuration and an LCOE equal to 0.37 $/kWh is the most suitable configuration to meet the load of a typical isolated community in Ecuador. The proposed optimization model can be used as a decision-support tool for evaluating the viability of autonomous HES projects at any other location.

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