scholarly journals Knowledge-Based Sensors for Controlling A High-Concentration Photovoltaic Tracker

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1315 ◽  
Author(s):  
Joaquin Canada-Bago ◽  
Jose-Angel Fernandez-Prieto ◽  
Manuel-Angel Gadeo-Martos ◽  
Pedro Perez-Higueras
Keyword(s):  
Computer Architecture ◽  
Fuzzy Rule ◽  
Electrical Energy ◽  
Electrical Current ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
High Concentration ◽  
The Real ◽  
Knowledge Based ◽  
High Degree

To reduce the cost of generated electrical energy, high-concentration photovoltaic systems have been proposed to reduce the amount of semiconductor material needed by concentrating sunlight using lenses and mirrors. Due to the concentration of energy, the use of tracker or pointing systems is necessary in order to obtain the desired amount of electrical energy. However, a high degree of inaccuracy and imprecision is observed in the real installation of concentration photovoltaic systems. The main objective of this work is to design a knowledge-based controller for a high-concentration photovoltaic system (HCPV) tracker. The methodology proposed consists of using fuzzy rule-based systems (FRBS) and to implement the controller in a real system by means of Internet of Things (IoT) technologies. FRBS have demonstrated correct adaptation to problems having a high degree of inaccuracy and uncertainty, and IoT technology allows use of constrained resource devices, cloud computer architecture, and a platform to store and monitor the data obtained. As a result, two knowledge-based controllers are presented in this paper: the first based on a pointing device and the second based on the measure of the electrical current generated, which showed the best performance in the experiments carried out. New factors that increase imprecision and uncertainty in HCPV solar tracker installations are presented in the experiments carried out in the real installation.

scholarly journals PV Emulation by using DC Programmable Sources

2017 ◽  
Vol 8 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Denis Pelin ◽  
Milan Opačak ◽  
Matej Pal
Keyword(s):  
Electricity Generation ◽  
Electrical Energy ◽  
Daily Basis ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
Pv Modules

The paper describes fast emulation of one selected photovoltaic system. This type of emulation reduces emulation time multiple times regarding standard emulation. By speeding up emulation time it is possible to predict electricity generation in advance on a daily basis. This facilitates the evaluation and comparison of electricity generation of photovoltaic systems of different power and/or different photovoltaic (PV) modules. The emulated electrical energy of the selected photovoltaic systems will make it possible to put forward recommendations concerning the choice of the optimal photovoltaic system with regard to the climate elements of the region

scholarly journals Meteorological Variables’ Influence on Electric Power Generation for Photovoltaic Systems Located at Different Geographical Zones in Mexico

2019 ◽  
Vol 9 (8) ◽  
pp. 1649 ◽  
Author(s):  
Jose A. Ruz-Hernandez ◽  
Yasuhiro Matsumoto ◽  
Fernando Arellano-Valmaña ◽  
Nun Pitalúa-Díaz ◽  
Rafael Enrique Cabanillas-López ◽  
...  
Keyword(s):  
Power Generation ◽  
Electric Power ◽  
Mexico City ◽  
Estimation Error ◽  
Photovoltaic System ◽  
Meteorological Variables ◽  
Photovoltaic Systems ◽  
Gradient Descent Method ◽  
Electric Power Generation ◽  
The Real

In this study, the relation among different meteorological variables and the electrical power from photovoltaic systems located at different selected places in Mexico were presented. The data was collected from on-site real-time measurements from Mexico City and the State of Sonora. The statistical estimation by the gradient descent method demonstrated that solar radiation, outdoor temperature, wind speed, and daylight hour influenced the electric power generation when it was compared with the real power of each photovoltaic system. According to our results, 97.63% of the estimation results matched the real data for Sonora and 99.66% the results matched for Mexico City, achieving overall errors less than 7% and 2%, respectively. The results showed an acceptable performance since a satisfactory estimation error was achieved for the estimation of photovoltaic power with a high determination coefficient R2.

scholarly journals Monitoring of Photovoltaic Systems: A case study URERMS Adrar

2020 ◽  
Vol 2 (02) ◽  
pp. 96-104
Author(s):  
Ahmed Bouraiou ◽  
Ammar Neçaibia ◽  
Rachid Dabou ◽  
Abderrezzaq Ziane ◽  
Nordine Sahouane ◽  
...  
Keyword(s):  
Data Storage ◽  
Electrical Energy ◽  
Research Unit ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
Pv System ◽  
Existing Problems ◽  
Pv Systems ◽  
Pv Generator

The electrical energy generation via the Photovoltaic system is widely utilized in the world especially in the countries where it is characterized by considerable potential of solar energy. PV systems are affected by several factors that can reduce its efficiency such as PV generator aging, failures. Photovoltaic systems monitoring is a important task for guaranteeing the reliability and stability of PV system operation. This paper addresses the monitoring of PV systems in renewable energy research unit in the Saharan region (URERMS) Adrar, through to give an insigth about the methods of measuring, acquisition, data storage of monitored parameters. In addition, the existing problems for insuring the suitable solution.

scholarly journals On the Reliability of Transformerless Photovoltaic DC/AC Converters Based on Mission Profile

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Ignacio Villanueva ◽  
Nimrod Vazquez ◽  
Joaquín Vaquero ◽  
Claudia Hernández ◽  
Héctor López ◽  
...  
Keyword(s):  
Single Phase ◽  
Electrical Energy ◽  
Operating Conditions ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
Technological Advances ◽  
Conversion Stage ◽  
Ac Converters ◽  
Mission Profile

Photovoltaic systems are a technology for the generation of electrical energy that is constantly increasing thanks to current technological advances and that contributes to sustainable development. The main stages of photovoltaic systems are the conversion stage, using an inverter, and filtering. These systems may be considered as a mature and growing technology; however, regarding its reliability, there exists some uncertainties, and they are related to the operation, incidents, and its potential failures, due to the number of elements, the environment, and the operating nominal values. For this reason, this article presents a comparative analysis of the reliability of single-phase transformerless photovoltaic inverters used to inject active power into the grid. This evaluation is carried out under the same design specifications for all the inverters analyzed; the study is made using a mission profile considering the IEC TR 62380 standard, where the events and environmental operating conditions are defined, and numerical simulations. This work is aimed at providing suggestions to improve the quality of the photovoltaic system also considering reliability.

scholarly journals Factors of photovoltaic system cost affect in Ecuador

2019 ◽  
Vol 5 (6) ◽  
pp. 1-11
Author(s):  
Janner Leonel Santos Mantuano ◽  
Mario Javier Carreño Vera ◽  
Ever Nevárez Cedeño
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Electrical Energy ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
Angle Of Incidence ◽  
The Sun ◽  
The Hours ◽  
The Impact

A photovoltaic system is a set of devices that take advantage of the energy produced by the sun and convert it into electrical energy. The impact produced by the possibility of using solar energy in a controlled manner for different uses and purposes has allowed the development of complete systems of transformation, storage and distribution of the energy produced with photovoltaic systems as appropriate. The production of electricity from solar radiation using solar cells and photovoltaic panels is an application that has yet fully disseminated in Third World countries, such as Ecuador. The generation of electric power will depend on the hours that the sun shines and affects the solar panel, the type and quantity of modules installed, orientation, inclination, solar radiation that reaches them, quality of the installation and the power that can be delivered to the user. Ecuador is in a privileged location in terms of solar radiation, because the equatorial line that divides the planet into two hemispheres passes through it, being almost perpendicular to the radiation it receives. In addition, this does not change during the year and there a constant angle of incidence, characteristics that give photovoltaic solar energy a great potential for use. In the investigation, an analysis of how the prices of photovoltaic systems affect the Province of Manabí, the methodology used has been the bibliographic review to know as much as possible about what replenishes the costs of photovoltaic systems.

Installation, Operation, and Performance of the Amonix High Concentration Photovoltaic System at the University of Nevada, Las Vegas

Solar Energy ◽  
2005 ◽  
Author(s):  
Kenneth W. Stone ◽  
Vahan Garboushian ◽  
Robert Boehm ◽  
Rick Hurt ◽  
Allison Gray ◽  
...  
Keyword(s):  
Las Vegas ◽  
Electrical Energy ◽  
Photovoltaic System ◽  
Site Location ◽  
High Concentration ◽  
Component Level ◽  
Photovoltaic Modules ◽  
And Performance ◽  
Power And Energy ◽  
The University

This paper discusses the installation and operation of the Amonix High Concentration Photovoltaic System at the Center for Energy Research at the University of Nevada, Las Vegas (UNLV). This includes the analysis performed to select of the foundation site location, drilling the foundation, installation of the foundation and pedestal, installation of the drive system, and installation of the concentrating photovoltaic modules. The day-to-day operation of the unit is described including an example of the generated power throughout the day. A summary is presented of the performance of the unit since the start of operation in March of 2004. This includes an example of the daily-generated electrical energy for a month, the monthly-generated energy since the start of the program, the total generated energy, the generating time, the peak power, etc. The result of an analysis of the power and energy generated is given that indicates the system performance has not decreased during this period of operation. Operating reliability data of the unit is presented for the system, subsystems, and major component level.

Reduction of the Low Voltage Substation Constraints by Inserting Photovoltaic Systems in Underserved Areas

2019 ◽  
Vol 12 (2) ◽  
pp. 105-112
Author(s):  
Benbouza Naima ◽  
Benfarhi Louiza ◽  
Azoui Boubekeur
Keyword(s):  
Low Voltage ◽  
Voltage Drop ◽  
Electrical Energy ◽  
Utilization Rate ◽  
Photovoltaic Systems ◽  
Voltage Distribution ◽  
Medium Voltage ◽  
Pv Systems ◽  
Transformer Substation ◽  
Load Pattern

Background: The improvement of the voltage in power lines and the respect of the low voltage distribution transformer substations constraints (Transformer utilization rate and Voltage drop) are possible by several means: reinforcement of conductor sections, installation of new MV / LV substations (Medium Voltage (MV), Low Voltage (LV)), etc. Methods: Connection of mini-photovoltaic systems (PV) to the network, or to consumers in underserved areas, is a well-adopted solution to solve the problem of voltage drop and lighten the substation transformer, and at the same time provide clean electrical energy. PV systems can therefore contribute to this solution since they produce energy at the deficit site. Results: This paper presents the improvement of transformer substation constraints, supplying an end of low voltage electrical line, by inserting photovoltaic systems at underserved subscribers. Conclusion: This study is applied to a typical load pattern, specified to the consumers region.

scholarly journals Performance Analysis of a Prototype High‐Concentration Photovoltaic System Coupled to Silica Optical Fibres

2021 ◽  
Author(s):  
Giuseppe Mattia Lo Piccolo ◽  
Adriana Morana ◽  
Aziz Boukenter ◽  
Sylvain Girard ◽  
Youcef Ouerdane ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Photovoltaic System ◽  
Optical Fibres ◽  
High Concentration

scholarly journals Real Fault Location in a Distribution Network Using Smart Feeder Meter Data

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3242
Author(s):  
Hamid Mirshekali ◽  
Rahman Dashti ◽  
Karsten Handrup ◽  
Hamid Reza Shaker
Keyword(s):  
Fault Location ◽  
Network Reliability ◽  
Distribution Network ◽  
Estimation Method ◽  
Electrical Energy ◽  
Distribution Networks ◽  
Active Power ◽  
Financial Loss ◽  
Smart Meters ◽  
The Real

Distribution networks transmit electrical energy from an upstream network to customers. Undesirable circumstances such as faults in the distribution networks can cause hazardous conditions, equipment failure, and power outages. Therefore, to avoid financial loss, to maintain customer satisfaction, and network reliability, it is vital to restore the network as fast as possible. In this paper, a new fault location (FL) algorithm that uses the recorded data of smart meters (SMs) and smart feeder meters (SFMs) to locate the actual point of fault, is introduced. The method does not require high-resolution measurements, which is among the main advantages of the method. An impedance-based technique is utilized to detect all possible FL candidates in the distribution network. After the fault occurrence, the protection relay sends a signal to all SFMs, to collect the recorded active power of all connected lines after the fault. The higher value of active power represents the real faulty section due to the high-fault current. The effectiveness of the proposed method was investigated on an IEEE 11-node test feeder in MATLAB SIMULINK 2020b, under several situations, such as different fault resistances, distances, inception angles, and types. In some cases, the algorithm found two or three candidates for FL. In these cases, the section estimation helped to identify the real fault among all candidates. Section estimation method performs well for all simulated cases. The results showed that the proposed method was accurate and was able to precisely detect the real faulty section. To experimentally evaluate the proposed method’s powerfulness, a laboratory test and its simulation were carried out. The algorithm was precisely able to distinguish the real faulty section among all candidates in the experiment. The results revealed the robustness and effectiveness of the proposed method.

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