scholarly journals Dynamic Stability Enhancement of a Hybrid Renewable Energy System in Stand-Alone Applications

Computation ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 14
Author(s):  
Ezzeddine Touti ◽  
Hossem Zayed ◽  
Remus Pusca ◽  
Raphael Romary
Keyword(s):  
Renewable Energy ◽  
Energy Systems ◽  
Experimental Tests ◽  
Energy System ◽  
Induction Generator ◽  
Technical Solution ◽  
Hybrid Energy ◽  
Wind Speeds ◽  
Hybrid Renewable Energy System ◽  
Stability Enhancement

Renewable energy systems have been extensively developed and they are attractive to become widespread in the future because they can deliver energy at a competitive price and generally do not cause environmental pollution. However, stand-alone energy systems may not be practical for satisfying the electric load demands, especially in places having unsteady wind speeds with high unpredictability. Hybrid energy systems seem to be a more economically feasible alternative to satisfy the energy demands of several isolated clients worldwide. The combination of these systems makes it possible to guarantee the power stability, efficiency, and reliability. The aim of this paper is to present a comprehensive analysis and to propose a technical solution to integrate a self-excited induction generator in a low power multisource system. Therefore, to avoid the voltage collapsing and the machine demagnetization, the various parameters have to be identified. This procedure allows for the limitation of a safe operating area where the best stability of the machine can be obtained. Hence, the load variation interval is determined. An improvement of the induction generator stability will be analyzed. Simulation results will be validated through experimental tests.

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 HYRES: A Multi-Objective Optimization Tool for Proper Configuration of Renewable Hybrid Energy Systems

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 26 ◽  
Author(s):  
Katheryn Donado ◽  
Loraine Navarro ◽  
Christian G. Quintero M. ◽  
Mauricio Pardo
Keyword(s):  
Life Cycle Cost ◽  
Cost Benefit ◽  
Energy Systems ◽  
Energy System ◽  
Climatic Conditions ◽  
Hybrid Energy ◽  
Multi Objective ◽  
Viability Analysis ◽  
Hybrid Renewable Energy System ◽  
Cost Benefit Ratio

This paper presents the Hybrid Renewable Energy System (HYRES), a powerful tool to contribute to the viability analysis of energy systems involving renewable generators. HYRES considers various input parameters related to climatic conditions, statistical reliability, and economic views; in addition to offering multi-objective optimizations using Genetic Algorithms (GAs) that have a better cost-benefit ratio than mono-objective optimization, which is the technique used in several commercial systems like HOMER, a worldwide leader in microgrid modeling. The use of intelligent techniques in HYRES allows optimal sizing of hybrid renewable systems with wind and solar energy generators adapted to different conditions and case studies. The elements that affect the system design like buying and selling energy from/to the grid and the use of storage units can be included in system configuration according to the need. Optimization approaches are selectable and include Initial Cost, Life Cycle Cost, Loss of Power Probability, and Loss of Power Supply Probability.

Techno-Economic Evaluation of Stand-alone Hybrid Renewable Energy System for Remote Village Using HOMER-Pro Software

2017 ◽  
Vol 6 (2) ◽  
pp. 74 ◽  
Author(s):  
Ajoya Kumar Pradhan ◽  
Mahendra Kumar Mohanty ◽  
Sanjeeb Kumar Kar
Keyword(s):  
Renewable Energy ◽  
Wind Speed ◽  
Optimization Design ◽  
Unit Cost ◽  
Flow Analysis ◽  
Energy System ◽  
Hybrid Energy ◽  
Hybrid Renewable Energy System ◽  
Cost Of Energy ◽  
Hybrid Renewable Energy

The off-grid hybrid renewable energy generation system has lesser cost of energy with higher reliability when compared with solar photovoltaic (PV) or wind energy system individually. The optimization design is worked out by reducing the unit cost of energy (UCOE) for different case studies and comparing the outcomes obtained by the use of HOMER-Pro (Hybrid Optimization Model of Electric Renewable) software. The optimal cash flow analysis of hybrid energy system is based on the load patterns is discussed, solar irradiance (kW/m2) of site at proper latitude and longitude, wind speed and price of diesel, which is collected from a remote village in Khurda District, Odisha in India. Moreover, the optimization and sensitivity results of the system are find out by varying the input parameters like solar radiation, wind speed etc.

scholarly journals Notes on the Economics of Residential Hybrid Energy System

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2639
Author(s):  
Mahelet G. Fikru ◽  
Gregory Gelles ◽  
Ana-Maria Ichim ◽  
Joseph D. Smith
Keyword(s):  
Renewable Energy ◽  
Energy Systems ◽  
Energy System ◽  
Economic Feasibility ◽  
Energy Output ◽  
Small Scale ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Residential Sector ◽  
Hybrid Renewable Energy

Despite advances in small-scale hybrid renewable energy technologies, there are limited economic frameworks that model the different decisions made by a residential hybrid system owner. We present a comprehensive review of studies that examine the techno-economic feasibility of small-scale hybrid energy systems, and we find that the most common approach is to compare the annualized life-time costs to the expected energy output and choose the system with the lowest cost per output. While practical, this type of benefit–cost analysis misses out on other production and consumption decisions that are simultaneously made when adopting a hybrid energy system. In this paper, we propose a broader and more robust theoretical framework—based on production and utility theory—to illustrate how the production of renewable energy from multiple sources affects energy efficiency, energy services, and energy consumption choices in the residential sector. Finally, we discuss how the model can be applied to guide a hybrid-prosumer’s decision-making in the US residential sector. Examining hybrid renewable energy systems within a solid economic framework makes the study of hybrid energy more accessible to economists, facilitating interdisciplinary collaborations.

scholarly journals Hybrid Solar and Wind Power Generation in Saudi Arabia

2020 ◽  
Vol 10 (2) ◽  
pp. 25
Author(s):  
Omar S. Alzaid ◽  
Basharat Salim ◽  
Jamal Orfi ◽  
Salah Khan ◽  
Hassan Alshehri
Keyword(s):  
Power Generation ◽  
Saudi Arabia ◽  
Renewable Energy ◽  
Power System ◽  
Wind Energy ◽  
Energy Systems ◽  
Energy System ◽  
Storage Devices ◽  
Hybrid Energy ◽  
Energy Flows

Solar and wind energy systems are attractive hybrid renewable energy systems suitable for various applications and most commonly for power generation. Compared to standalone wind and solar devices, hybrid systems have several advantages, including requiring lesser or no storage devices, being more reliable, damping the daily and seasonal variations and ensuring constant energy flows. This work aims to conduct a feasibility study and a performance analysis of a hybrid wind and solar photovoltaic (PV) power system in selected regions in the Kingdom of Saudi Arabia (KSA). A detailed review on the potential of PV, wind energy and hybrid energy systems in KSA, to reason out the potential areas of study, has identified two sites to be selected to carry out the investigation. A small size power system driven by solar and wind energy has been modeled and simulated for a year period in the selected locations. Various configuration schemes of integrated solar and wind with storage devices for such a small capacity system have been proposed and their respective performances have been evaluated. Techno-economic aspects have been included. The simulation results indicated that the developed model shows a promising future of implementing the renewable energy system in the eastern and southern regions of the Kingdom. 

scholarly journals A comparative approach between different optimize result in hybrid energy system using HOMER

2019 ◽  
Vol 9 (1) ◽  
pp. 141
Author(s):  
Shweta Goyal ◽  
Sachin Mishra ◽  
Anamika Bhatia
Keyword(s):  
Renewable Energy ◽  
Energy System ◽  
Physical Contact ◽  
Comparative Approach ◽  
Renewable Sources ◽  
Hybrid Energy System ◽  
Hybrid Energy ◽  
Hybrid Renewable Energy System ◽  
Reliability Issue ◽  
Hybrid Renewable Energy

<p>To compare the different result of optimization of a hybrid energy system. A hybrid renewable energy system (HRES) is the combination of renewable and non-renewable sources which is playing a very important role for rural area electrification when grid extension is not possible or excessively expensive. Non renewable sources like diesel power generator (optional) are used in a HRES for backup when renewable energy supply is not sufficient. While the HRES is very important due to the smallest natural and physical contact compared to non renewable sources, this work proposed a comparison outcome with the help of different component by using HOMER software and get best optimize result for the model. This paper presents a wide-ranging review of various aspects of HRES. This paper discusses study, best sizing, and model, organize aspect and reliability issue.</p>

scholarly journals Assessment of Wind and Solar Hybrid Energy for Agricultural Applications in Sudan

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 5
Author(s):  
Zafar A. Khan ◽  
Muhammad Imran ◽  
Abdullah Altamimi ◽  
Ogheneruona E. Diemuodeke ◽  
Amged Osman Abdelatif
Keyword(s):  
Renewable Energy ◽  
Case Studies ◽  
Irrigation Water ◽  
Energy Systems ◽  
Water Requirement ◽  
Small Scale ◽  
Hybrid Energy ◽  
Water Pumping ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

In addition to zero-carbon generation, the plummeting cost of renewable energy sources (RES) is enabling the increased use of distributed-generation sources. Although the RES appear to be a cheaper source of energy, without the appropriate design of the RES with a true understanding of the nature of the load, they can be an unreliable and expensive source of energy. Limited research has been aimed at designing small-scale hybrid energy systems for irrigation pumping systems, and these studies did not quantify the water requirement, or in turn the energy required to supply the irrigation water. This paper provides a comprehensive feasibility analysis of an off-grid hybrid renewable energy system for the design of a water-pumping system for irrigation applications in Sudan. A systematic and holistic framework combined with a techno-economic optimization analysis for the planning and design of hybrid renewable energy systems for small-scale irrigation water-pumping systems is presented. Different hybridization cases of solar photovoltaic, wind turbine and battery storage at 12 different sites in Sudan are simulated, evaluated, and compared, considering the crop water requirement for different crops, the borehole depth, and the stochasticity of renewable energy resources. Soil, weather, and climatic data from 12 different sites in Sudan were used for the case studies, with the key aim to find the most robust and reliable solution with the lowest system cost. The results of the case studies suggest that the selection of the system is highly dependent on the cost, the volatility of the wind speed, solar radiation, and the size of the system; at present, hybridization is not the primary option at most of sites, with the exception of two. However, with the reduction in price of wind technology, the possibility of hybrid generation will rise.

DESIGN AND POWER QUALITY ANALYSIS OF HYBRID RENEWABLE ENERGY SYSTEM FOR THO CHU ISLAND, VIETNAM

2020 ◽  
pp. 66-75
Author(s):  
Le Duc Tung
Keyword(s):  
Renewable Energy ◽  
Environmental Pollution ◽  
Power Supply ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Quality Analysis ◽  
Technical Solution ◽  
Hybrid Renewable Energy System ◽  
Renewable Energy System ◽  
Hybrid Renewable Energy

Using renewable energy sources for providing electricity in remote area is an economical-technical solution and reduces environmental pollution. Tho Chu island, Phu Quoc district, Kien Giang province, is currently supplied by diesel generators, causing environmental pollution and high-power generation costs. This article presents hybrid renewable energy system (HRES) design including diesel generator, photovoltaic system and energy storage system for Tho Chu Island. In addition to calculating and selecting of equipment, ensuring power supply for the load, the paper also examines the frequency and voltage quality, considers the harmonic distortion of the power supply system. The simulation results obtained from PYsyst and Matlab/Simulink software show the effectiveness of the HRES.

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 Stationary Hybrid Renewable Energy Systems for Railway Electrification: A Review

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5946
Author(s):  
Sergey V. Mitrofanov ◽  
Natalya G. Kiryanova ◽  
Anna M. Gorlova
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Systems ◽  
Energy System ◽  
Hydrogen Energy ◽  
Railway Transport ◽  
Renewable Energy Systems ◽  
Storage Devices ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

This article provides an overview of modern technologies and implemented projects in the field of renewable energy systems for the electrification of railway transport. In the first part, the relevance of the use of renewable energy on the railways is discussed. Various types of power-generating systems in railway stations and platforms along the track, as well as in separate areas, are considered. The focus is on wind and solar energy conversion systems. The second part is devoted to the analysis of various types of energy storage devices used in projects for the electrification of railway transport since the energy storage system is one of the key elements in a hybrid renewable energy system. Systems with kinetic storage, electrochemical storage batteries, supercapacitors, hydrogen energy storage are considered. Particular attention is paid to technologies for accumulating and converting hydrogen into electrical energy, as well as hybrid systems that combine several types of storage devices with different ranges of charge/discharge rates. A comparative analysis of various hybrid electric power plant configurations, depending on the functions they perform in the electrification systems of railway transport, has been carried out.

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