scholarly journals Differential Evolutionary and PI Regulated Converter Technology for Loading Analysis in Renewable Energy Systems

2020 ◽  
Vol 6 (11) ◽  
pp. 1-8
Author(s):  
Prakhar Bhadoria ◽  
Divyanshi Yadav
Keyword(s):  
Hybrid System ◽  
Harmonic Distortion ◽  
Fuel System ◽  
Current Waveform ◽  
Remote Communities ◽  
Renewable Energy Systems ◽  
Electrical Grid ◽  
Distortion Level ◽  
Voltage Output ◽  
Sudden Load

Many remote communities around the world cannot be physically or economically connected to an electrical grid. The main objective of the study of designing an inverter control that attains a lower distortion level in the voltage as well as current waveforms by incorporating an optimization algorithm. The controller should reduce the spikes at the transient loading point when the system is subjected to sudden load changes at the power generating units. And the system is to be integrated with the fuel system also to obtain energy efficiency. The fuel system would be connected in parallel to the DC voltage output of the solar/wind hybrid system. The final hybrid system with fuel cell integration was studied for the total harmonic distortion in the voltage and current waveform. The distortion level in the voltage waveform was found to be 0.25% and that in the current waveform was 1.84%. It is under the IEEE acceptable limits.

scholarly journals Optimum Controller Design Go Overall Quality Enhancement of System with Hybrid Renewable Energy Sources

2020 ◽  
Vol 6 (4) ◽  
pp. 10
Author(s):  
Harish Khorwal ◽  
Mrs. Madhu Upadhyay
Keyword(s):  
Solar Wind ◽  
Hybrid System ◽  
Reactive Power ◽  
Controller Design ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Fuel System ◽  
Current Waveform ◽  
Power Requirement ◽  
Distortion Level

Grid-tied photovoltaic systems are power-generating systems that are connected with grids. Designing of a grid integrated solar wind hybrid energy system for driving loads for improving its reliability and efficiency. This study of designing an inverter control that attains lower distortion level in the voltage as well as current waveforms. The controller should reduce the spikes at the transient loading point when the system is subjected to sudden load changes. The system is to be integrated with the fuel system also to obtain the energy efficiency. The fuel system would be connected in parallel to the DC voltage output of the solar/wind hybrid system. And Improvement in the reactive power output from the system by the inverter control by designed hybrid system that can compensate the reactive power requirement when required. This project should attain the hybrid solar/wind/fuel system with proposed controller to improve the output parameters. The final hybrid system with fuel cell integration was studied for the total harmonic distortion in the voltage and current waveform. The distortion level in the voltage waveform was found to be 0.39% and that in the current waveform was 1.95%. It is under the IEEE acceptable limits.

scholarly journals Stability Enhancement by Comparative Analysis of AI Techniques in Power System Stablizer Integrated With Hybrid System

2019 ◽  
Vol 5 (6) ◽  
pp. 4
Author(s):  
Harsh Vardhan Singh ◽  
Dr. Ranjeeta Khare
Keyword(s):  
Power System ◽  
Hybrid System ◽  
Active Power ◽  
Power System Stabilizer ◽  
Swarm Optimization ◽  
Distortion Level ◽  
Voltage Output ◽  
Power Enhancement ◽  
System Stabilizer ◽  
Stability Enhancement

Hybrid system has been modeled in MATLAB/SIMULINK environment which is then integrated with two generators based power system. The work has done over analysis of THD level in voltage output from the hybrid system with various controls being proposed for the power system stabilizer. Various controls like PI-Hysteresis, particle swarm optimization (PSO) and PSO with neural network (NN) have been implemented for comparative study. It was found that the distortion level in voltage output waveform was least in stabilizer having PSO-NN control which is 3.36%. Also the active power enhancement reached a whooping value of 9.4 KW from the hybrid system.

Design of Efficient Power Filter with Reduced Distortion Using Control Algorithm

IJOSTHE ◽  
2020 ◽  
pp. 1-10
Author(s):  
Rahul Dhakad ◽  
Dr. Rakesh Saxena
Keyword(s):  
Distribution System ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Renewable Energy Resources ◽  
Nonlinear Loads ◽  
Nonlinear Load ◽  
Power Filter ◽  
Distortion Level ◽  
Voltage Output

The electrical distribution system is facing undesirable power quality disturbances due to different types of linear/nonlinear loads on the supply system. The objective of the project is to reduce the distortion level in voltage or current input to the load and at the output of the filter. To design a simple but highly viable hybrid active power buffer that is capable of feeding less distorted voltage to the nonlinear load model. To present an optimal controlling of these buffers so as to minimize the voltage distortion by designing a different algorithm for the same. Comparing the THD levels of the output voltage waveform with the standard controlling method with the proposed control design to further enhance the proposed design such that it is practically feasible to be implemented in grid system having renewable energy resources. In this work, a power filter has been designed using different algorithms with an objective to reduce the Total Harmonic Distortion in the voltage output waveforms. The total harmonic distortion in the voltage output waveform being fed to the load using only the PQ_RLS algorithm is found to be 2.18 %. In the case of the output voltage from the power buffer using PQ_RLS algorithm, the THD level is 0.17 %. The distortion level in the output voltage waveforms in both the cases being fed to the load when compared, it is found that RLS algorithm in combination with PQ algorithm is more effective in reducing the distortion as compared to standard RLS method or PQ method.

scholarly journals Modeling of micro-grid with the consideration of total harmonic distortion analysis

2019 ◽  
Vol 15 (2) ◽  
pp. 581
Author(s):  
Ibrahim Alhamrouni ◽  
Wira Wahab ◽  
M. Salem ◽  
Nadia H. A. Rahman ◽  
Lili Awalin
Keyword(s):  
Harmonic Distortion ◽  
Rapid Expansion ◽  
Total Harmonic Distortion ◽  
Electricity Grid ◽  
Distributed Generations ◽  
Electrical Grid ◽  
Autonomous Mode ◽  
Quality Stability ◽  
Islanded Mode ◽  
Micro Grid

<p>With the rapid expansion of electricity grid, there yet still places to be covered considering their remote location. Micro-grid (MG) is a solution in this scenario, in fact, there is actually many cases where MG is used in case of emergency and act as a backup to the main electrical grid. By disconnecting itself from the larger grid, a grid that can have many problems, the micro-grid becomes much more flexible in its operations and by continuing to power households and communities alike. Besides grid-connected mode, it is necessary for the MG to operate in autonomous mode. By operating in islanded mode, micro-grids must be able to supply critical load without interruption, run at specific values for voltage and power and extract the maximum power from the distributed generations (DG). Therefore, the modeling of microgrid network considering solar photovoltaic(PV) and wind turbine generation (WTG) system as the distributed generation have been modeled using Matlab/Simulink in this research. Apart from that, the observation of total harmonic distortion(THD) between two operation modes of grid-connected and the islanded-mode is presented in order to analyze the power quality stability towards two operations MG network with same loads size and network parameters.</p>

scholarly journals Research on Output Waveform of Generator with Rectifier Load considering Commutation Overlap Angle

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Bingyi Zhang ◽  
Gongfei He ◽  
Guihong Feng
Keyword(s):  
Circuit Simulation ◽  
Harmonic Distortion ◽  
Simulation Method ◽  
Conduction Time ◽  
Current Waveform ◽  
Voltage Waveform ◽  
Rectifier Circuit ◽  
Output Waveform ◽  
Output Side ◽  
Distortion Rate

The purpose of this paper is to study the influence of the uncontrolled rectifier circuit on the generator’s output waveform when considering the commutation overlap angle. Taking the nonsalient permanent magnet (PM) generator directly connected with the uncontrolled rectifier circuit as an example, the equivalent circuit of the generator with rectifier load is established, and the commutation process of the rectifier circuit is analyzed when the effect of the commutation overlap angle is considered. The output waveforms of generator’s output side are obtained by analytical method, circuit simulation method, field-circuit coupled simulation method, and experimental method. The validity of the analysis methods is demonstrated by comparison. According to the results of analytical analysis, we know the characteristics of the output waveform under the influence of the commutation overlap angle. The existence of the commutation overlap angle will cause the voltage waveform to concave or convex, prolong the conduction time of the winding, and result in phase difference between the voltage waveform and current waveform. The influence of synchronous inductance and extra inductance on the output waveforms and harmonic distortion rate is analyzed. The research of this paper provides a theoretical basis for improving the output waveform of the generator with rectifier load.

scholarly journals Quantifying the Environmental and Economic Performance of Remote Communities

2019 ◽  
Vol 8 (4) ◽  
pp. 176 ◽  
Author(s):  
Jamie Filer ◽  
Steven Schuldt
Keyword(s):  
Management Practices ◽  
Sustainability Assessment ◽  
Assessment Model ◽  
Remote Site ◽  
Construction Costs ◽  
Remote Communities ◽  
Renewable Energy Systems ◽  
Proposed Model ◽  
Waste Management Practices ◽  
Post Disaster

Remote communities such as oil production sites, post-disaster housing camps, and military forwardoperating bases (FOB) are often detached from established infrastructure grids, requiring a constantresupply of resources. In one instance, a 600-person FOB required 22 trucks per day to delivernecessary fuel and water and remove generated wastes. This logistical burden produces negativeenvironmental impacts and increases operational costs. To minimize these consequences,construction planners can implement sustainability measures such as renewable energy systems,improved waste management practices, and energy-efficient equipment. However, integration ofsuch upgrades can increase construction costs, presenting the need for a tool that identifies tradeoffsamong conflicting criteria. To assist planners in these efforts, this paper presents the development ofa novel remote site sustainability assessment model capable of quantifying the environmental andeconomic performance of a set of infrastructure alternatives. Through field data and literatureestimates, a hypothetical FOB is designed and evaluated to demonstrate the model’s distinctivecapability to accurately and efficiently assess construction alternatives. The proposed model willenable construction planners to maximize the sustainability of remote communities, creating sitesthat are more self-sufficient with reduced environmental impacts.Keywords: Sustainability, infrastructure, remote communities

Study and Optimization of a Hybrid Power Generation System to Power Kalakala, a Remote Locality in Northern Côte d'Ivoire

2021 ◽  
Vol 11 (1) ◽  
pp. 183-192
Author(s):  
Jules Yao Koffi ◽  
Koita Mohamed Sako ◽  
Blaise Kamenan Koua ◽  
Paul Magloire Ekoun Koffi ◽  
Yao Nguessan ◽  
...  
Keyword(s):  
Hybrid System ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Good Alternative ◽  
Battery Life ◽  
Diesel Generator ◽  
Remote Communities ◽  
Cote D’Ivoire ◽  
Simulation And Optimization ◽  
Côte D'ivoire

This work presents the results of a study to optimize the production of electricity, by hybrid system Photovoltaic – Diesel – Batteries, to power the village of Kalakala in the north of Côte d'Ivoire. The study site is an isolated rural community, powered by a diesel generator. It is located in northern Côte d'Ivoire. HOMER software has been used for system simulation and optimization. The result of this study is then compared to those of PV - Batteries and diesel alone systems. From the results of the simulations, it appears that the optimal combination of the hybrid system includes a diesel generator of 50 kW, a photovoltaic field of 46 kW, 10 batteries of 48V and a converter of 100 kW. With a photovoltaic penetration rate of 52.7%, this system, compared to the photovoltaic - batteries system, reduces the photovoltaic field by 56%, the number of batteries by 61.5% and increases battery life by 42.84%. Compared to diesel alone, it reduces fuel consumption and the quantity of CO2 by 60% and improves diesel efficiency by 17%. The cost of generating electricity for the hybrid system is €0.373/kWh compared to €0.466 and €0.608/kWh respectively, for the PV-Batteries and diesel alone systems. The hybrid system with the best technical, economic and environmental performance could be a good alternative for generating electricity in remote communities.

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.

A Multilevel Optimization Method for the Design and Operation of Stand-Alone Hybrid Renewable Energy Systems for Multiple Remote Communities

2014 ◽  
Author(s):  
Francisco J. Contreras ◽  
David A. Romero ◽  
Cristina H. Amon
Keyword(s):  
Renewable Energy ◽  
Design Optimization ◽  
Energy Systems ◽  
Optimization Method ◽  
Optimal Operation ◽  
Remote Communities ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Wide Range ◽  
Hybrid Renewable Energy

Recently, there has been increased interest in designing stand-alone Hybrid Renewable Energy Systems (HRES) for remote communities. Several methodologies have been proposed to tackle the design optimization problem, to develop strategies for optimal operation/dispatch, or to address both problems concurrently. So far, however, these methods have been developed only for specific communities or system configurations (e.g., wind-diesel; PV-diesel). In this study, we propose a multilevel design optimization method that considers both optimal component selection and dispatch strategy that can be applied to any community regardless of the available renewable resources, thus overcoming the limitations of previous studies. The new approach considers a wide range of renewable and non-renewable energy technologies, a database of commercially available components, and leverages state-of-the-art methods for solving each optimization subproblem. The novel algorithm was evaluated with a set of meteorological conditions that emulate different remote communities. In addition, two pricing scenarios for diesel are studied to explore how the HRES design is influenced by this parameter.

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