scholarly journals Modeling and Optimization of a Residential Solar Stand-Alone Power System

2011 ◽  
Vol 2011 ◽  
pp. 1-14
Author(s):  
Hany A. Khater ◽  
Amr A. Abdelraouf ◽  
Mohamed H. Beshr
Keyword(s):  
Power System ◽  
Computer Code ◽  
Maximum Efficiency ◽  
Great Ability ◽  
Modeling And Optimization ◽  
Solar Tracking ◽  
Average Maximum ◽  
System Output ◽  
Solar Powered ◽  
The Cost

Modeling and optimization of a residential solar-powered stand-alone power system comprising photovoltaic (PV) arrays and secondary batteries are presented. Moreover, an economic study is performed to determine the cost of electricity (COE) produced from this system so as to determine its competitiveness with the conventional sources of electricity. All of the calculations are performed using a computer code developed by using MATLAB. The system output was calculated for Cairo city (30°01′N, 31°14′E) in Egypt. It was found that dual-axis solar tracking is not economically feasible while cooling of the PV surface helps to lower the COE of the system. Also, the average maximum efficiency of the modeled 200 W solar cells was 14.16%. The system which has an efficiency of 12% showed a great ability to satisfy the estimated demand load. The COE obtained from the system was found to be 41.7 cents/kWh over 20 years of its operation with an expected future cost of 31 cents/kWh.

scholarly journals Development of Solar Powered Sprinkler Robot Based on Watering Plant Using IOT Approach

2021 ◽  
Vol 2107 (1) ◽  
pp. 012024
Author(s):  
Lim Xin You ◽  
Nordiana Shariffudin ◽  
Mohd Zamri Hasan
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
System Analysis ◽  
Tracking System ◽  
Sprinkler System ◽  
Solar Panel ◽  
Maximum Efficiency ◽  
Solar Tracking ◽  
Solar Tracker ◽  
Solar Powered

Abstract Nowadays, solar energy’s popularity is growing consistently every year, along with the growth of amazing solar technologies, which is considered to be one of the most popular. Non-renewable energy like petrol and gasoline is being replaced with solar energy, which is renewable energy. The main objective of this project is to design and simulate a robot solar system. The robot is developed using Arduino Mega 2560 as the main brain of the system. This system is equipped with a solar tracking system to track the movement of the sun and LDR is used to detect the presence of sunlight. The solar tracker is used to get the maximum efficiency of solar energy and reduce power losses. In addition, the solar tracker can rotate from 0° - 180°, which is the best angle for the solar panel to reach the sunlight. This robot will be attached to the sprinkler system to perform the watering process. This robot is developed for use in the agriculture field to reduce the manpower and cost of the watering process. Three analyses will be conducted in this project such as solar panel analysis, Wi-Fi connectivity analysis and sprinkler system analysis. The result shows the solar panel will gain the highest intensity of the sunlight at 12.00 pm and a sunny day compared to the other time and a cloudy day. The maximum range of Wi-Fi connectivity and the water pump, time used to finish the watering process and watering area will be discussed.

A Harmonic Source Location Method Based on PMU Measurements in Distribution Network

2015 ◽  
Vol 775 ◽  
pp. 409-414
Author(s):  
Bing Jun Li ◽  
Su Quan Zhou ◽  
Xiao Xiang Lun
Keyword(s):  
Power System ◽  
State Estimation ◽  
Distribution Network ◽  
Measured Data ◽  
Optimal Measurement ◽  
Location Method ◽  
Measurement Placement ◽  
Minimum Number ◽  
Harmonic Source ◽  
The Cost

It is of great importance to identify the location of the harmonic sources for the harmonic governance in the power system. Applied with optimal measurement placement (OMP) and harmonic state estimation (HSE), this paper presents a novel process based on PMU measurements to locate the harmonic sources in the distribution network. Considering the cost and the observability, the OMP can provide a scheme of the measurement placement with the minimum number of PMU measurements. In order to simplify the HSE equation, the measured data are converted to the form of voltage by the method proposed in this paper.By solving the HSE equation, the location and magnitude of the harmonic source are evaluated. The methodology is applied to the IEEE 33-bus system, and the obtained results are properly analyzed.

scholarly journals Fast 10-Point DFT Algorithm for Power System Harmonic Analysis

2021 ◽  
Vol 11 (15) ◽  
pp. 7007
Author(s):  
Janusz P. Paplinski ◽  
Aleksandr Cariow
Keyword(s):  
Computational Complexity ◽  
Power System ◽  
Harmonic Analysis ◽  
Efficient Algorithm ◽  
System Analysis ◽  
Spectral Leakage ◽  
Power System Analysis ◽  
Improve Accuracy ◽  
The Cost ◽  
Harmonic Power

This article presents an efficient algorithm for computing a 10-point DFT. The proposed algorithm reduces the number of multiplications at the cost of a slight increase in the number of additions in comparison with the known algorithms. Using a 10-point DFT for harmonic power system analysis can improve accuracy and reduce errors caused by spectral leakage. This paper compares the computational complexity for an L×10M-point DFT with a 2M-point DFT.

scholarly journals Flyback Photovoltaic Micro-Inverter with a Low Cost and Simple Digital-Analog Control Scheme

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4239
Author(s):  
Salam J. Yaqoob ◽  
Adel Obed ◽  
Rana Zubo ◽  
Yasir I. A. Al-Yasir ◽  
Hussein Fadhel ◽  
...  
Keyword(s):  
Digital Signal Processor ◽  
Low Cost ◽  
Harmonic Distortion ◽  
Single Stage ◽  
System Component ◽  
Maximum Efficiency ◽  
System Efficiency ◽  
Control Scheme ◽  
The Cost ◽  
Micro Inverter

The single-stage flyback Photovoltaic (PV) micro-inverter is considered as a simple and small in size topology but requires expensive digital microcontrollers such as Field-Programmable Gate Array (FPGA) or Digital Signal Processor (DSP) to increase the system efficiency, this would increase the cost of the overall system. To solve this problem, based on a single-stage flyback structure, this paper proposed a low cost and simple analog-digital control scheme. This control scheme is implemented using a low cost ATMega microcontroller built in the Arduino Uno board and some analog operational amplifiers. First, the single-stage flyback topology is analyzed theoretically and then the design consideration is obtained. Second, a 120 W prototype was developed in the laboratory to validate the proposed control. To prove the effectiveness of this control, we compared the cost price, overall system efficiency, and THD values of the proposed results with the results obtained by the literature. So, a low system component, single power stage, cheap control scheme, and decent efficiency are achieved by the proposed system. Finally, the experimental results present that the proposed system has a maximum efficiency of 91%, with good values of the total harmonic distortion (THD) compared to the results of other authors.

Parameter analysis of power system for solar-powered unmanned aerial vehicle

2021 ◽  
Vol 295 ◽  
pp. 117031
Author(s):  
Chaoyu Zhang ◽  
Chengming Zhang ◽  
Liyi Li ◽  
Qingbo Guo
Keyword(s):  
Power System ◽  
Unmanned Aerial Vehicle ◽  
Parameter Analysis ◽  
Aerial Vehicle ◽  
Solar Powered

A method of 3D path planning for solar-powered UAV with fixed target and solar tracking

2019 ◽  
Vol 92 ◽  
pp. 831-838 ◽  
Author(s):  
Yu Huang ◽  
Jianguo Chen ◽  
Honglun Wang ◽  
Guofeng Su
Keyword(s):  
Path Planning ◽  
Fixed Target ◽  
Solar Tracking ◽  
Solar Powered

Power system output feedback stabilizer design via optimal subeigenstructure assignment

1991 ◽  
Vol 21 (2) ◽  
pp. 107-114 ◽  
Author(s):  
T.L. Huang ◽  
S.C. Chen ◽  
T.Y. Hwang ◽  
W.T. Yang
Keyword(s):  
Power System ◽  
Output Feedback ◽  
System Output

scholarly journals Electricity market efficiency and voltage stability

2021 ◽  
Author(s):  
Ayman Helmy Mostafa Elkasrawy
Keyword(s):  
Power System ◽  
Market Efficiency ◽  
Electricity Markets ◽  
Electricity Market ◽  
Voltage Stability ◽  
Electric Power System ◽  
Maximum Efficiency ◽  
Best Interest ◽  
The Relationship ◽  
System Layout

Several electricity markets were created in the last two decades by deregulation and restructuring vertically integrated utilities. In order to serve the best interest of participating entities, it is important to operate electricity markets at their maximum efficiency. In most cases, electricity markets were formed to operate on existing physical power systems that had evolved over several decades as vertically integrated utilities. Location of generating stations, large urban load centers and enabling transmission systems were unique to every power system and followed the 'lay of the land'. Depending upon a power system layout, voltage stability and margin to voltage collapse are unique to it. While an electricity market is to be operated efficiently, its optimal generation schedule to supply energy through an electric power system has to be reliable and meet the strict standards including those that relate to voltage stability. This work elicits the relationship between market efficiency and voltage stability. To this end, a formulation and a solution algorithm are presented. Two contrasting 5-bus cases illustrate how the transmission system layout influences the relationship between voltage stability and market efficiency. The IEEE 118-bus system is also used to illustrate this relationship.

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