scholarly journals Optimal Operation of Biomass Gasifier Based Hybrid Energy System

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
P. Balamurugan ◽  
S. Kumaravel ◽  
S. Ashok
Keyword(s):  
Renewable Energy ◽  
Optimal Allocation ◽  
Renewable Energy Sources ◽  
Operating Cost ◽  
Energy System ◽  
Optimal Operation ◽  
Energy Sources ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Typical Day

The focus of the world on renewable energy sources is growing rapidly due to its availability and environment friendliness. However, the renewable energy influenced by natural conditions is being intermittent, it is difficult to accomplish stable energy supply only by one kind of renewable energy source. In order to achieve reliability, it is necessary to integrate two or more energy sources together in an optimal way as hybrid energy system. Optimal allocation of sources, unpredictable load demand, intermittent behaviors of sources, and charging and discharging of storage devices are the major challenges in operating a hybrid energy system. A new controller algorithm is developed and implemented in controller hardware to overcome the above issues. The controller is incorporated in biomass gasifier-based hybrid energy system in a university campus at south India. A case study is carried out in real-time at the site for a typical day. From the experimentation, it is estimated that the annual savings in the operating cost are Rs 375,459.00 ($8475.4) for the optimal allocation of the sources by the controller.

RELIABILITY ANALYSIS OF HYBRID ENERGY SYSTEM

2014 ◽  
Vol 21 (03) ◽  
pp. 1450011 ◽  
Author(s):  
ZHIGANG TIAN ◽  
AMIR AHMAD SEIFI
Keyword(s):  
Renewable Energy ◽  
Reliability Analysis ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Cost Evaluation ◽  
Energy Sources ◽  
Power Sources ◽  
Hybrid Energy System ◽  
Hybrid Energy

A hybrid energy system integrates renewable energy sources like wind, solar, micro-hydro and biomass, fossil fuel power generators such as diesel generators and energy storage. Hybrid energy system is an excellent option for providing electricity for remote and rural locations where access to grid is not feasible or economical. Reliability and cost-effectiveness are the two most important objectives when designing a hybrid energy system. One challenge is that the existing methods do not consider the time-varying characteristics of the renewable sources and the energy demand over a year, while the distributions of a power source or demand are different over the period, and multiple power sources can often times complement one another. In this paper, a reliability analysis method is developed to address this challenge, where wind and solar are the two renewable energy sources that are considered. The cost evaluation of hybrid energy systems is presented. A numerical example is used to demonstrate the proposed method.

Optimal operation of a multi-energy system considering renewable energy sources stochasticity and impacts of electric vehicles

Energy ◽  
2019 ◽  
Vol 186 ◽  
pp. 115841 ◽  
Author(s):  
Mustafa Ata ◽  
Ayşe Kübra Erenoğlu ◽  
İbrahim Şengör ◽  
Ozan Erdinç ◽  
Akın Taşcıkaraoğlu ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Electric Vehicles ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Optimal Operation ◽  
Energy Sources

scholarly journals ENHANCING WIND/FUEL CELL HYBRID ENERGY SYSTEM

2013 ◽  
pp. 176-180
Author(s):  
PAVAN R. PADGHAN ◽  
P.K. KATTI
Keyword(s):  
Renewable Energy ◽  
Fuel Cell ◽  
Wind Turbine ◽  
Cell Hybrid ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Sustained Load ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Fuel Cell Hybrid

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.

scholarly journals Techno-Economic and Environmental Assessment of the Hybrid Energy System Considering Electric and Thermal Loads

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3136
Author(s):  
Li-Ning Xing ◽  
Hong-Long Xu ◽  
Armin Kardan Sani ◽  
Md. Alamgir Hossain ◽  
S. M. Muyeen
Keyword(s):  
Greenhouse Gas Emission ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Optimal Operation ◽  
System Structure ◽  
Pv System ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Cost Of Energy ◽  
Electric Loads

Optimal sizing of hybrid energy systems has been considerably investigated in previous studies. Nevertheless, most studies only focused on providing AC electric loads by renewable energy sources (RESs) and energy storage systems (ESSs). In this paper, a hybrid energy system, including photovoltaic (PV) system, ESS, fuel cell (FC), natural gas (NG) boiler, thermal load controller (TLC), and converter is optimized for supplying different load demands. Three scenarios are introduced to investigate the feasibility of the energy system. Environmental aspects of each system are analyzed, as there are NG-consuming sources in the system structure. A sensitivity analysis is conducted on the influential parameters of the system, such as inflation rate and interest rate. Simulation results show that the proposed hybrid energy system is economically and technically feasible. The net present cost (NPC) and cost of energy (COE) of the system are obtained at $230,223 and $0.0409, respectively. The results indicate that the TLC plays a key role in the optimal operation of the PV system and the reduction in greenhouse gas emission productions.

scholarly journals Energy Management Optimization Techniques for Hybrid Renewable Energy Systems

2020 ◽  
Vol 8 (6S) ◽  
pp. 89-94
Keyword(s):  
Renewable Energy ◽  
Smart Grid ◽  
Energy Management ◽  
Renewable Energy Sources ◽  
Supply And Demand ◽  
Energy System ◽  
Optimization Techniques ◽  
Energy Sources ◽  
Hybrid Energy ◽  
Management Optimization

A Smart Grid is a reviving structure of traditional centralized power sector which incorporates smart software and hardware technologies. It provides communication among the prosumers and consumers to achieve sustainability and reliability in an economical way. A microgrid (MG) is a unit of smart grid which consists of distributed energy sources with renewable energy sources, energy storage units and variable loads. Because of stochastic nature of renewable energy sources to maintain balance between supply and demand a novel hybrid energy management controller need to be devised. This paper presents various operational objectives and constraints associated with energy management system of hybrid energy system. Also it compares and discusses various optimization algorithms in the literature.

scholarly journals Review of Optimization Techniques for Sizing Renewable Energy Systems

2019 ◽  
Vol 8 (1) ◽  
pp. 13-30 ◽  
Author(s):  
C. Mekontso ◽  
Abdulkarim Abubakar ◽  
S. Madugu ◽  
O. Ibrahim ◽  
Y. A. Adediran
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Optimization Techniques ◽  
Weather Data ◽  
Energy Sources ◽  
Hybrid Energy ◽  
Load Demand ◽  
Global Warning

The growing evidence of the global warning phenomena and the rapid depletion of fossil fuels have drawn the world attention to the exploitation of renewable energy sources (RES). However standalone RES have been proven to be very expensive and unreliable in nature owing to the stochastic nature of the energy sources. Hybrid energy system is an excellent solution for electrification of areas where the grid extension is difficult and not economical. One of the main attribute of hybridising is to be able to optimally size each RES including storages with the aim of minimizing operation costs while efficiently and reliably responding to load demand. Hybrid RES emerges as a trend born out of the need to fully utilize and solve problems associated with the reliability of RES. This paper present a review of techniques used in recent optimal sizing of hybrid RES. It discusses several methodologies and criteria for optimization of hybrid RES. The recent trend in optimization in the field of hybrid RES shows that bio-inspired techniques may provide good optimization of system without extensive long weather data.

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.

scholarly journals Feasibility study of hybrid energy system for off-grid electrification in rural areas

2021 ◽  
Vol 14 (1) ◽  
pp. 57-66
Author(s):  
Saadoon Abdul Hafedh
Keyword(s):  
Rural Areas ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sources ◽  
Diesel Generator ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Rural Village ◽  
Photovoltaic Array ◽  
Cost Of Energy

Hybrid energy systems is an energy system which employs the combination of various renewable energy sources (solar, wind, biomass, hydro, and hydrogen fuel) with conventional energy sources to supply electricity. These systems have become reliable and most cost-effective as compare to single-source energy system for rural electrification. The objective of the present study is to address the demand for electrification of remote rural village in eastern Iraq. The methodology is carried out for optimization of hybrid energy system comprising (Photovoltaic, battery, diesel generator) by using HOMER to minimize the cost of energy and the greenhouse gas emissions. For different configuration of energy sources, the capital cost, net present cost and cost of energy is determined for the optimized hybrid energy system on the basis of the electric consumption demand for the selected site. The simulation results show that the most techno-economic analysis for hybrid energy system can feed the  rural village in eastern Iraq to meet a daily load of 30 kW has consisted of 6 kW photovoltaic array, 7 kW power inverter, 20 units of battery (305 Ah and 6V) and 35 kW wind turbines. The optimized energy system has a cost of energy about $ 0.117/kWh and total net present cost  by about $14800. The environmental assessment of the hybrid system shows that the greenhouse gases emissions will reduce about 25ton CO2/year (16968 kg/year) in the local atmosphere.

scholarly journals A numerical analysis of a HYBRID PV+WT power system

2019 ◽  
Vol 128 ◽  
pp. 05001 ◽  
Author(s):  
Marek Jaszczur ◽  
Qusay Hassan ◽  
Haidar N. Al-Anbagi ◽  
Patryk Palej
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sources ◽  
Stable Operation ◽  
Renewable Energy Resources ◽  
Hybrid Energy ◽  
Speed Fluctuation ◽  
Alternative Sources

The increase in global energy consumption and the expected exhaustion of traditional energy sources, especially in the last century, led to an increased search for alternative sources of energy.The use of renewable energy sources has become extremely important to reduce dependence on fossil fuels. Due to the stochastic nature of the renewable energy sources such as the wind speed fluctuation and the intensity of solar radiation the stable operation of the systems base single renewable source can be problematic. But the using two or more of these sources results in higher stability than relying on a single source. For this reason, hybrid renewable energy systems have become an attractive solution in thefield of renewable energy. A hybrid energy system is a combination of two or more renewable energy sources that can enhance each another to increase the reliability of the supplied energy. The objective of this paper is investigation about the energy supplying improvement and the energy efficiency utilisation by hybridisation using two renewable energy resources: wind energy and solar energy with respect two different optimisation objectives: economical to reduce the net present cost and ecological to reduce CO2 emissions. Presented system has been implemented to supply a single household with an electric load.

Multi Objective Optimization of Lifecycle Cost, Unmet Load, and Renewable Energy Capacity for an Expansion of Existing Standalone Internal Combustion Generator (ICG) Systems

2011 ◽  
Author(s):  
A. T. D. Perera ◽  
R. A. Attalage ◽  
K. K. C. K. Perera
Keyword(s):  
Renewable Energy ◽  
Fuel Consumption ◽  
Renewable Energy Sources ◽  
Internal Combustion ◽  
Energy System ◽  
Energy Sources ◽  
Energy Capacity ◽  
Solar Pv ◽  
Hybrid Energy ◽  
Early Design Stages

Expanding existing Internal Combustion Generator (ICG) systems by incorporating renewable energy sources is getting popular due to its potential to reduce the emission of Green House Gases (GHG) and fuel consumption. Designing such Hybrid Energy System (HES)s become challenging due to the seasonal variation of renewable energy sources resulting either poor reliability of power supply or higher expenditure, which makes it essential to optimize Levelized Energy Cost (LEC), unmet load fraction and renewable energy capacity at the early design stages. This study evaluates the results obtained through such optimization based on evolutionary algorithm. In order to accomplish this, mathematical modeling and simulation of a stand-alone HES was carried out along with the optimization. Obtained results shows that both wind and Solar PV (SPV) capacity is having a significant impact on LEC, unmet load fraction and fuel consumption.

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