scholarly journals A Scenario Analysis of Solar Photovoltaic Grid Parity in the Maldives: The Case of Malahini Resort

2018 ◽  
Vol 10 (11) ◽  
pp. 4045 ◽  
Author(s):  
Tae Jung ◽  
Donghun Kim ◽  
Jongwoo Moon ◽  
SeoKyung Lim
Keyword(s):  
Renewable Energy ◽  
Storage System ◽  
Technical Information ◽  
Energy Systems ◽  
Photovoltaic System ◽  
Small Island ◽  
Diesel Generator ◽  
Renewable Energy Systems ◽  
Grid Parity ◽  
Remote Island

The Maldives, one of the Small Island Developing States (SIDS) with great solar potential, is keen to promote renewable energy systems to reduce its heavy reliance on imported diesel for power generation. However, adopting renewable energy systems is still burdensome for the Maldives not only because of its high initial costs and insufficient financial resources but also because of a lack of understanding about whether the deployment of a renewable system is economically feasible. Therefore, the concept of grid parity is explored as an important concept in this paper to examine the possible timeframe for reaching it. A distinctive feature of the paper is that the paper used actual cost and technical information to analyze the levelized cost of energy (LCOEs) of the independent renewable system in a remote island and examined its timeframe for reaching the grid parity condition. Based on economic and technical information from a project for replacing existing diesel generator to photovoltaic (PV) with energy storage system (ESS) in Kuda Bandos Island in the Maldives, the paper considers three different system configurations and evaluates which configuration could result in the most optimal off-grid energy systems in this remote island. With sensitivity analysis on various uncertainties, the paper shows the range of the levelized costs of energy and the periods required for reaching grid parity for deploying solar photovoltaics and ESSs in Kuda Bandos Island, Maldives. The result indicates that the photovoltaic system is an economically feasible option for the resort, and that grid parity can be reached within the project lifetime. However, the result shows that the use of advanced ESSs is still an expensive option and would not be economically reasonable.

scholarly journals A Robust Optimization for Designing a Charging Station Based on Solar and Wind Energy for Electric Vehicles of a Smart Home in Small Villages

2018 ◽  
Author(s):  
Amir Ahadi ◽  
Shrutidhara Sarma ◽  
Jae Sang Moon ◽  
Jang Ho Lee
Keyword(s):  
Renewable Energy ◽  
Electric Vehicles ◽  
Storage System ◽  
Real Life ◽  
Energy Systems ◽  
Energy Storage System ◽  
Photovoltaic System ◽  
Design Stage ◽  
Renewable Energy Systems ◽  
Charging Station

In recent years, integration of electric vehicles (EVs) has increased dramatically due to their lower carbon emissions and reduced fossil fuel dependency. However, charging EVs could have significant impacts on the electrical grid. One promising method for mitigating these impacts is the use of renewable energy systems. Renewable energy systems can also be useful for charging EVs where there is no local grid. This paper proposes a new strategy for designing a renewable energy charging station consisting of wind turbines, a photovoltaic system, and an energy storage system to avoid the use of diesel generators in remote communities. The objective function is considered to be the minimization of the total net present cost, including energy production, components setup, and financial viability. The proposed approach, using stochastic modeling, can also guarantee profitable operation of EVs and reasonable effects on renewable energy sizing, narrowing the gap between real-life daily operation patterns and the design stage. The proposed strategy should enhance the efficiency of conventional EV charging stations. The key point of this study is the efficient use of excess electricity. The infrastructure of the charging station is optimized and modeled.

scholarly journals Potential and Feasibility Study of Hybrid Wind–Hydroelectric Power System with Water-Pumping Storage: Jordan as a Case Study

2020 ◽  
Vol 10 (9) ◽  
pp. 3332
Author(s):  
Mohammad Al-Addous ◽  
Sahil Al Hmidan ◽  
Mustafa Jaradat ◽  
Emil Alasis ◽  
Nesrine Barbana
Keyword(s):  
Renewable Energy ◽  
Feasibility Study ◽  
Hybrid System ◽  
Wind Farm ◽  
Storage System ◽  
Peak Load ◽  
Energy Systems ◽  
Cost Study ◽  
Renewable Energy Systems ◽  
Water Pumping

Periodic daily fluctuating demand for energy and power is a perceptible phenomenon, resulting in some moments of low demand for power and energy related to the huge energy comes from renewable energy systems, and some moments of peak load demand. This phenomenon, when combined with the non-stationary operation of huge capacity of renewable energy systems, results in no stability of voltage and frequency. To assure continuous network stability and to avoid energy losses from renewable energy systems that are subject to such control system, a hybrid system with energy–power storage in the form of pumped-hydro storage is considered the most suitable technically. This paper presents the design, modeling, analysis, and feasibility study of a hybrid wind and water-pumping storage system. The system was designed and analyzed for King Talal Dam (KTD), which is in Northern Jordan. The importance of this study is that it is directed mainly to Jordan and the Middle East and North Africa (MENA) region in general. The Jordanian renewable energy market is a promising arena that encourages developers, investors, engineers, and companies to develop and install pure renewable energy systems and renewable energy hybrid projects for the generation of electricity. The analysis of wind data is carried out using the “windfarm” software with 5.16 m/s as average wind speed. It is followed by the design of the hybrid system, which is simulated for a daily operation of 2–3 h as peak load hours. Based on the technical outcomes, cost study and feasibility analyses are carried out with Jordanian market prices. The total estimated annual energy production is 26,663,933 kWh from 10 MW wind farm and 5.2 MW pumping storage system. The aforementioned studies showed that a similar hybrid system is not always fully commercially feasible. However, a pure pumped-storage system proved to be technically feasible and assisting the grid. The whole project analysis determines that such a system boosts the operational stability of the grid, increases the penetration of renewable energy systems and reduces the energy import. In addition, 15,100,000 tons of CO2-equivalent is estimated as annual emissions reduction in this study.

Neural forecasting and optimal sizing for hybrid renewable energy systems with grid-connected storage system

2016 ◽  
Vol 8 (4) ◽  
pp. 045303 ◽  
Author(s):  
K. J. Gurubel ◽  
V. Osuna-Enciso ◽  
J. J. Cardenas ◽  
A. Coronado-Mendoza ◽  
M. A. Perez-Cisneros ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Storage System ◽  
Energy Systems ◽  
Renewable Energy Systems ◽  
Optimal Sizing ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy

scholarly journals A Proposed Strategy to Solve the ‎Intermittency Problem in Renewable Energy Systems ‎Using A Hybrid Energy ‎Storage System

2021 ◽  
Vol 16 ◽  
pp. 41-51
Author(s):  
T. A. Boghdady ◽  
S. N. Alajmi ◽  
W. M. K. Darwish ◽  
M. A. Mostafa Hassan ◽  
A. Monem Seif
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage System ◽  
Energy Systems ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Renewable Energy Systems ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Bus Voltage

Renewable energy resources are a favorable solution for the coming energy. So, a great interest has been paid in the last decades for developing and utilizing renewable energy resources as wind energy. As it has a large energy contents and, particularize with the availability, but the major problems of it are represented in unmatched with load demand because the intermittency and fluctuation of nature conditions. Many studies focused on the new strategy of using Battery Storage System (BSS), and solving some problems that affect the DC bus voltage and the BSS by using Electrochemical Double Layer Capacitor (EDLC). Their capability is to store energy to realize the objective of time shifting of surplus energy with a high efficiency. The article main objective is to model, simulate, design, and study the performance of a Stand-Alone Wind Energy System with Hybrid Energy Storage (SAWS-HES). Thus, a complete model of the proposed system is implemented including a detailed modeling procedure of the HESS components. In addition to the main contribution, a study of the performance of EDLC only as a storage device that has fast response device integrated to the suggested system then it hybridized with the BSS. The HESS has the capability to compensate the DC bus voltage in the transient conditions and gives good stability for the system. The SAWS-HES utilizes one main renewable energy resource as wind turbine and overall model is employed under MATLAB/Simulink including a developed simple logic controller. The SAWS-HES simulation results presented a promising performance and have a satisfied performance in meeting the end load demands at different operation conditions. This ensures the SAWS-HES reliability and the effectiveness with HES and the controller in stand-alone operation formulating an excellent solution for the renewable energy systems

scholarly journals Optimal Sizing and Techno-Economic Analysis of Hybrid Renewable Energy Systems—A Case Study of a Photovoltaic/Wind/Battery/Diesel System in Fanisau, Northern Nigeria

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1381
Author(s):  
Nasser Yimen ◽  
Theodore Tchotang ◽  
Abraham Kanmogne ◽  
Idriss Abdelkhalikh Idriss ◽  
Bashir Musa ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Systems ◽  
Sub Saharan Africa ◽  
Rural Electrification ◽  
Northern Nigeria ◽  
Diesel Generator ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Sub Saharan ◽  
Hybrid Renewable Energy

Hybrid Renewable Energy Systems (HRESs) have been touted as an appropriate way for supplying electricity to remote and off-grid areas in developing countries, especially in sub-Saharan Africa (SSA), where rural electrification challenges are the most pronounced. This study proposes a two-step methodology for optimizing and analyzing a stand-alone photovoltaic/wind/battery/diesel hybrid system to meet the electricity needs of Fanisua, an off-grid and remote village of northern Nigeria. In the first step, the MATLAB environment was used to run simulations and optimize the system via the genetic algorithm. Then, techno-economic and emissions analysis was carried out in the second step to compare the proposed system to the existing traditional modes of rural electrification in sub-Saharan Africa, namely, the grid-extension and diesel generator. The break-even distance parameter was adopted in the comparison with grid-extension. Besides, the hypothetical project of replacing the diesel generator by the optimal system was analyzed using the Simple Payback Period (SPP) and Net Present Value (NPV) parameters. The resulting optimal design architecture included an 89.271-kW photovoltaic array, a 100.31-W diesel generator, and 148 batteries with a total annualized cost (TAC) and cost of energy (COE) of USD 43,807 and USD 0.25/kWh, respectively. The break-even distance found was 16.2 km, while the NPV and SPP of the hypothetical project were USD 572,382 and 2.8 years, respectively. The savings in carbon dioxide (CO2) emissions of the proposed system compared to the grid extension and the diesel generator were found to be 85,401.08 kg/year and 122,062.85 kg/year, respectively. This study highlighted the role that solar PV-based HRESs could play in the sustainable electricity supply in rural areas of sub-Saharan Africa.

scholarly journals Robust Design Optimization of Electromagnetic Actuators for Renewable Energy Systems Considering the Manufacturing Cost

Energies ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 4353 ◽  
Author(s):  
Jie Deng ◽  
Xiaohan Liu ◽  
Guofu Zhai
Keyword(s):  
Renewable Energy ◽  
Robust Design ◽  
Manufacturing Process ◽  
Energy Systems ◽  
Photovoltaic System ◽  
Robust Design Optimization ◽  
Manufacturing Cost ◽  
Electromagnetic Actuators ◽  
Renewable Energy Systems ◽  
The Impact

Power transmission and protection of power electronics–electromagnetic actuators are crucial parts in renewable energy systems (energy management of photovoltaic, wind power, hybrid and electric vehicles). Consistency optimization of electromagnetic actuators has attracted extensive attention from corporations in competitive markets. Robust design has been widely applied for reducing the influence of uncertainties in the manufacturing process to improve the consistency of product quality. However, the cost factors of the actual manufacturing process are not fully considered in state-of-art methods. Although the consistency has been improved, the optimization scheme may not be optimal from the perspective of engineering applications, because unnecessary cost increments may be produced. In this paper, an application-oriented robust design method for consistency optimization is proposed. The impact of tolerance values on quality loss and manufacturing cost can be considered simultaneously to guide the tolerance optimization process. Thus, the optimal solution of total loss is obtained by optimizing the quality fluctuation to the design objective with the minimum increment of manufacturing cost. An example of the consistency optimization of an electromagnetic actuator used in the photovoltaic system is presented to illustrate the procedure and verify the effectiveness of the proposed method.

Optimal Battery Bank Dimensioning Algorithm for Renewable Systems Electrification of Isolated Sites

2018 ◽  
Vol 6 (8) ◽  
pp. 20
Author(s):  
Malek Belouda
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage System ◽  
Energy Systems ◽  
Energy Storage System ◽  
System Structure ◽  
Renewable Energy Systems ◽  
Remote Areas ◽  
Battery Bank ◽  
Battery Energy

The penetration of renewable energy systems in remote areas contributes to reply to its accrued demand of electricity. Renewable energy systems as photovoltaic generation systems and wind generation systems are characterized by their unpredictable and intermittent character presenting the main drawback of these systems. Although this advantage, the problems caused by the intermittency of these systems can be resolved by employing a battery energy storage system. To this end this paper proposes and analyses an efficient and optimal methodology dedicated to applications fed by renewable energy systems. Since an optimal energy storage bank sizing is needed in order to assure the continuity and reliability of electricity supply of remote areas from these kinds of energy sources. The first part of this article describes the renewable hybrid system structure and different factors influencing the storage system dimensioning. Different scenarios of renewable sources power generations in order to develop an optimal battery bank sizing algorithm are investigated the second part of this article. The formulation of the algorithm is finally presented and discussed.

The Potential of the Russian Federation and Uzbekistan for the Implementation of Solar Renewable Energy Systems

2021 ◽  
Vol 3 (44) ◽  
pp. 86-103
Author(s):  
Nikita R. Kostik ◽  
◽  
Aybek M. Sipatdinov ◽  
Aleksandr V. Bobyl’ ◽  
Andrey F. Erk ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Solar Activity ◽  
Solar Energy ◽  
Russian Federation ◽  
Power Supply ◽  
Geographical Location ◽  
Energy Systems ◽  
Diesel Generator ◽  
Renewable Energy Systems ◽  
The Russian Federation

The main drawback of the modern power supply system is centralization. Renewable energy is a promising alternative for supplying electricity to remote settlements. Solar energy is more preferable, since it is least dependent on the geographical location. (Research purpose) The research purpose is in studying the possibilities of creating an autonomous renewable energy system based on solar photoconvertors for remote villages. (Materials and methods) Authors examined small rural settlements in various climatic regions of the Russian Federation and Uzbekistan, identified promising regions for solar-powered systems similar in climatic and socio-economic parameters – the Krasnodar Territory and the regions of Uzbekistan. There was used data from the NASA POWER project for analysis. (Results and discussion) The article presents the comparison of a diesel generator and a renewable solar-diesel system as an autonomous source of electricity for small settlements. Due to the lack of sun in winter and due to lower temperatures, there is a need for an additional source of energy. (Conclusions) The article presents the methodology for assessing the technical and economic potential of renewable energy sources in the regions under consideration. Due to the high solar activity and geographical location, the cost of energy in the regions of Uzbekistan was 0.153, 0.155, 0.166 dollars per kilowatt-hour for hybrid renewable energy systems and 0.387, 0.371, 0.401 dollars per kilowatt-hour for a diesel generator. In the Krasnodar Territory these costs are 0.138 dollars per kilowatt-hour for a hybrid system and 0.316 dollars per kilowatt-hour for a diesel generator. It is possible to create fully autonomous power supply stations in these regions based on solar energy stations. For this purpose it is necessary to add an energy source that will be used during periods of insufficient solar activity. The most promising solution is the use of a wood gas source.

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