scholarly journals IoT-Based Hybrid Renewable Energy System for Smart Campus

2021 ◽  
Vol 13 (15) ◽  
pp. 8555
Author(s):  
Ali M. Eltamaly ◽  
Majed A. Alotaibi ◽  
Abdulrahman I. Alolah ◽  
Mohamed A. Ahmed
Keyword(s):  
Renewable Energy ◽  
Energy Systems ◽  
Photovoltaic System ◽  
Critical Parameters ◽  
Small Scale ◽  
Accurate Information ◽  
Communication Model ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

There is a growing interest in increasing the penetration rate of renewable energy systems due to the drawbacks associated with the use of fossil fuels. However, the grid integration of renewable energy systems represents many challenging tasks for system operation, stability, reliability, and power quality. Small hybrid renewable energy systems (HRES) are small-scale power systems consisting of energy sources and storage units to manage and optimize energy production and consumption. Appropriate real-time monitoring of HRES plays an essential role in providing accurate information to enable the system operator to evaluate the overall performance and identify any abnormal conditions. This work proposes an internet of things (IoT) based architecture for HRES, consisting of a wind turbine, a photovoltaic system, a battery storage system, and a diesel generator. The proposed architecture is divided into four layers: namely power, data acquisition, communication network, and application layers. Due to various communication technologies and the missing of a standard communication model for HRES, this work, also, defines communication models for HRES based on the IEC 61850 standard. The monitoring parameters are classified into different categories, including electrical, status, and environmental information. The network modeling and simulation of a university campus is considered as a case study, and critical parameters, such as network topology, link capacity, and latency, are investigated and discussed.

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.

Optimum Design of Small-Scale Stand-Alone Hybrid Renewable Energy Systems

2017 ◽  
pp. 279-306
Author(s):  
Juan M. Lujano-Rojas ◽  
Rodolfo Dufo-López ◽  
José L. Bernal-Agustín ◽  
Gerardo J. Osório ◽  
João P.S. Catalão
Keyword(s):  
Renewable Energy ◽  
Optimum Design ◽  
Energy Systems ◽  
Small Scale ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy

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.

An investigation on wind/PV/fuel cell/battery hybrid renewable energy system for nursing home in Istanbul

2019 ◽  
Vol 233 (5) ◽  
pp. 616-625 ◽  
Author(s):  
Bahtiyar Dursun ◽  
Ercan Aykut
Keyword(s):  
Renewable Energy ◽  
Nursing Home ◽  
Fuel Cell ◽  
Energy Systems ◽  
Power Converter ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Cost Of Energy ◽  
Hybrid Renewable Energy

This paper presents a techno-economic analysis of hybrid renewable energy systems to supply the electrical load requirements of the nursing home located in Istanbul, Turkey. The standalone hybrid renewable energy systems (Photovoltaic (PV)/wind/fuel cell/electrolyzer, PV/fuel cell/electrolyzer, and wind/fuel cell/electrolyzer, etc.) considered in the analysis were comprised of different combinations of PV panels, fuel cells, and wind turbines supplemented with hydrogen storage. In this study, the Hybrid Optimization of Multiple Energy Resources (HOMER) software is used as the assessment tool to determine the optimal configuration of hybrid renewable energy systems taking total net present cost and cost of energy into consideration. As a result, it is determined that the optimal system configuration of standalone wind/PV/fuel cell/electrolyzer hybrid renewable energy systems with the lowest total net present cost consists of 30 kW PV panel, 20 kW wind turbine, 20 kW fuel cell, 20 kW power converter, 50 kW electrolyzer, 20 kW rectifier, and 100 kg hydrogen tank. Besides, the net present cost and cost of energy of the optimum configuration are calculated to be $607,298 and $1.306/kWh, respectively. The system is considered as completely renewable. When wind speed and solar radiation values increase, then the cost of energy decrease about $0.979/kWh.

scholarly journals Adaptation of a Novel Fuzzy Logic Controller to a Hybrid Renewable Energy System

2018 ◽  
pp. 1-10 ◽  
Author(s):  
Emmanuel Chibuikem Nnadozie ◽  
Ogbonna Ukachukwu Oparaku
Keyword(s):  
Fuzzy Logic ◽  
Renewable Energy ◽  
Power Management ◽  
Fuzzy Logic Controller ◽  
Energy Systems ◽  
Energy System ◽  
Test Case ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

Global attention has been drawn to exploiting the potentials of renewable energy systems, especially their hybrid configurations, due to sustainability issues and climatic impact associated with the use of fossil fuels. Power management in such hybrid renewable energy systems is still a progressive research. Many power control solutions have been proposed. However, much of them lack validation. This work was done to validate a proposed novel intelligent power management scheme based on fuzzy logic control. The controller, designed by a group of researchers, was validated by adapting it to a hybrid renewable energy system, and simulating test case scenarios to validate the functionality claims of the controller. For each test case, the controller was confirmed to emulate expert decisions. The novel fuzzy logic controller was thus validated and the claims of the authors verified.

scholarly journals Fuzzy Logic Based Controller with Dedicated Safety Function for Hybrid Renewable Energy System

2018 ◽  
pp. 1-13
Author(s):  
Nnadozie Emmanuel Chibuikem ◽  
Oparaku Ogbonna Ukachukwu
Keyword(s):  
Fuzzy Logic ◽  
Renewable Energy ◽  
Energy Flow ◽  
Fossil Fuels ◽  
Energy Systems ◽  
Energy System ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Hybrid Renewable Energy

For the dual reasons of energy security and environmental and climate preservation, there has been a global campaign for drastic reduction in the use of fossil fuels and a consequential aggressive pursuit for the development of clean energy systems. Hybrid renewable energy systems, ahead of single source renewable energy systems, promise to be an effective alternative to the use of fossil fuels. However, if hybrid renewable energy systems must effectively and reliably serve as an alternative to fossil fuel use, then improvements in the control and management of energy flow among the renewable energy supplies, energy storage components, and the load is of very vital significance. More intelligent and optimized, and easy-to-develop control techniques need to be introduced to replace already existing conventional techniques. And very importantly, extra measures have to be taken to ensure longer battery life and the overall safety of the system. This work is a design of a fuzzy logic-based control system for managing energy flow in a hybrid renewable energy system. A dedicated output was incorporated in the fuzzy controller for controlling the load connection status. The results showed that the fuzzy logic controller accurately emulated expert decisions in monitoring the battery state-of-charge and renewable energy supply capacities, and effectively determining and controlling the battery charging and discharging functions. The employment of fuzzy logic control in the system eliminated the need for complex and tedious mathematical modelling as required in conventional control methods. Thus the system was easier to develop.

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