Power

Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/3079

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Author: search.filters.author.Bentarzi, Hamid (Supervisor)End date: 2024

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Now showing 1 - 10 of 12
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    Design and implementation laboratory experiments of protective relays for master program
    (Université M’Hamed Bougara de Boumerdes : Institut de génie electrique et electronique (IGEE), 2024) Medegga, Nadia; Madaadi, Yousra; Bentarzi, Hamid (Supervisor)
    Power Systems are fondamental to modern society, providing the energy necessary for everydays activities and industrial operations. The reliability and stability of these systems are paramount, requiring robust protection mechanisms to safeguard against various faults. Protective relays play a crucial role in detecting these faults and isolating affected parts of the system to prevent widespread outages and equipment damage. This poject begins by establishing the foundational principlesof electrical system protection. it emphasizes the importance of safeguarding power networks and explores the complexities of different types of faults, with a particular focus on earthing faults. Understanding these principles is essential for appreciating the critical functions of protective relays.
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    Design and implementation of overhead fault passage indicator
    (Université M’Hamed BOUGARA de Boumerdes : Institut de génie electrique et electronique (IGEE), 2023) Driadi, Soumeya; Benyahia, Hocine; Bentarzi, Hamid (Supervisor)
    A LabVIEW-based implementation approach is adopted in this study to design and develop an overhead fault The designed and implemented overhead fault passage indicator (FPI) system is a reliable and efficient solution for monitoring and detecting faults in electrical distribution systems. The system utilizes LabVIEW software, an ESP8266 microcontroller, and Google Firebase for data communication and storage. Through the development process, the LabVIEW code is designed to retrieve sensor data from Google Firebase using the HTTP client protocol. This data is displayed on the system’s user-friendly interface, allowing for real-time monitoring and analysis of the electrical system’s performance. Various tests have been conducted to validate the effectiveness of the FPI system. Threshold verification test shave been performed to ensure accurate detection of overcurrent and undercurrent conditions within the predefined threshold values .Sensitivity test shave been conducted to assess the system’s ability to detect minor deviations from the normal current range. In simulated fault scenarios, such as short circuit and open circuit conditions, the FPI system has demonstrated its capability to promptly detect and indicate the presence of faults through the activation of an LED indicator. This helps prevent potential hazards and minimize downtime. The results of the implemented FPI system have demonstrated its effectiveness in enhancing the safety and reliability of electrical distribution systems. The system has shown accurate fault detection, real-time monitoring capabilities, and timely response, leading to improved system performance and reduced maintenance costs. These outcomes validate the value of the FPI system as a reliable tool for ensuring the integrity and efficiency of electrical distribution networks.
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    Desing and implementation of a test bench for PV panels
    (2023) Naili, Warda; Kadri, Selma; Bentarzi, Hamid (Supervisor); Touabi, Celina
    Though intermittent, solar energy is a clean and eternal source of energy. PV (Photo- voltaic) cell is one of the technology to harness the solar energy and use it as electricity. In recent years rising cost of electricity and environmental concerns have made the solar PV tech- nology a rising research field . In this research field the efficiency improvement is the focal point for the researchers. Because of intermittent weather conditions the output power of the solar cell varies directly to the irradiance level and inversely to the cell temperature and cell never operates at its maximum power. This report focuses on the design and implementation of a test bench for photovoltaic (PV) panels, aiming to provide a real interface between the user and the panel to facilitate testing under specific irradiance and temperature conditions . The project comprises two circuits: one for controlling irradiance using an AC dimming circuit with six halogen lamps, allowing the user to adjust the light intensity through LabVIEW. The circuit also incorporates a light sensor that measures lux values, which are then converted to irradiance. The second circuit involves temperature control, achieved by employing a DC fan. Both circuits are controlled using an Arduino Uno board, while LabVIEW software is utilized for data visualization and user interface control. The developed test bench provides a comprehensive and user-friendly platform for accurate and controlled testing of PV panels under desired irradiance and
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    PC based online platform for PV module characterization and ODM parameters identification
    (2022) Zemmouri, Radia; Bentarzi, Hamid (Supervisor)
    A low cost frame work using PC based platform associated with LabVIEW program has been developed to obtain the current-voltage (I-V) and power-voltage (P-V) curves automatically. This developed platform uses the Arduino board to acquire the measured current, voltage, temperature, and irradiance from the PV panel under test using different sensors such as current transformer, thermistor and irradiance transducer. The new developed platform can provide the dynamic parameters such as maximum power and its corresponding voltage and current with high accuracy and precision in measurement under different environmental conditions. It stores the measured data for the objective of identification and extraction the five electrical parameters of the PV module’s one diode mathematical model using grey wolf optimizer.
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    Design and implementation of automatic voltage regulator for synchronous generator
    (2021) Saad, Aymane; Lairedj, Abderrezak; Bentarzi, Hamid (Supervisor)
    Automatic Voltage Regulator (AVR) is necessary for all power generation plant producing electricity using synchronous generators (SGs) to ensure constant voltage in the grid connection. This final year project aims to design and implement an AVR using Labview program for the laboratory 1.5kVA salient pole Lab-volt SG. First, an experimental test is carried out using test bench in order to identify the relationship between the terminal voltage of the SG and current injected to the field winding, the second experiment is done to identify the PWM signals needed for different loads connected to the terminal of the generator. Then, AVR model is simulated using Simulink/ Matlab. Finally, a model of the AVR will be constructed and tested under five different loads condition.
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    Design and implementetion of a real-time battery chatacterization platform
    (2021) Litoufi, Mahdi Abdenour; Tair, Nazim; Bentarzi, Hamid (Supervisor)
    Batteries play an important role in the performance of power grids including renewable energy systems. In order to obtain the rated service life and the longest possible run time of a battery, it must be monitored and maintained. This calls for an effective real-time characterization platform. Therefore, it is intended to develop a real-time battery monitoring system that will be able to provide the user with battery parameters. Physical involvement is not required for recording the instantaneous values. To simplify this task a LabVIEW based platform is made to automate the battery characterization system. This project is based on a graphical user interface (GUI) that allows users to read the Open Circuit Voltage (OCV), current, and ambient temperature of the battery as it is charging or discharging. There is a possibility for data to be recorded, including voltage, current, charging and discharging times. This assists in recording experimental data which in turn will be used for a precise and efficient estimation of the state of charge as well as for aging study.
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    Photovoltaic cell I-V characteristics: simulation versus measurement
    (2021) Touabi, Cilina; Bentarzi, Hamid (Supervisor)
    Among all renewable energy sources, solar energy has acquired the highest growth rate worldwide in the last years. The major application of solar energy is photovoltaic (PV) power generation. For an accurate study in different PV applications, it is very important to model the basic device of the PV cell. However, the model parameters are usually unavailable in the datasheet provided by the manufacturers and their values change over time due to the PV degradation. Thus, how to estimate appropriate parameters is of high importance. This work presents two methods for identifying the optimal parameters of a PV generating unit. In both methods the PV generator is simulated using the one diode model. The first method is based on grey wolf algorithm where the parameters of the model are identified using only datasheets provided my manufacturers, this algorithm is included in a SIMULINK simulation for constructing the I-V and P-V characteristics. The second method is based on an opposition- based particle swarm optimization algorithm where the objective function is derived from the experimental current-voltage data. These approaches are found to be useful for designers since they are simple, fast and provide accurate results. The analysis is performed on various PV modules under different environmental conditions. The final results are compared and discussed to demonstrate the efficiency and accuracy of the proposed work.
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    PC based relay tester
    (2016) Mazouz, Alaa Eddine; Messauodi, Mohamed; Bentarzi, Hamid (Supervisor)
    Power quality disturbances are an issue that is gaining so much attention within the research community because of its detrimental consequences on the power grid, instruments and customers alike. Relays are the first line of defense in the face of these disturbances rendering their existence the most important in the protection scheme; relay testing is therefore just as important. This project deals with the design and implementation of a Relay Tester, which is based on the simulation of power quality disturbances and fault signals using LabVIEW environment and the generation of these signals using data acquisition card. These fault signals are amplified to the standard relay values using a Class-D amplifier. The amplified signals are injected into the relay to test its functionality.
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    Design and implementation of different types of grounding system
    (Université M’Hamed BOUGARA de Boumerdes : Institut de génie electrique et electronique (IGEE), 2016) Tebbal, Mouadh Salah Eddine; Rimane, Abdennacer; Bentarzi, Hamid (Supervisor)
    There is no doubt that safety is major concern of technology and development, because a system that is badly secured may put the human life on stake, moreoverthe non-safe installations reflect also on the economic cost as well as the energy loss, where according to statistics about 75% of electricity losses are due to faults on distribution networks, so it is essential to provide suitable protection schemes and relay selection to ensure the fastest disconnection of faulty parts in order to minimize outage times and thus improving the continuity of power supply. As one could not cover all safety systems, our concern is focused only on grounding methods and their protection techniques; we have discussed the different grounding types with advantages, disadvantages and applications of each. The main types are being discussed in this report are: TT, TN-C and IT systems each one has a special design and characteristic that differs from the others. Also the protection devices have discussed briefly showing the most important ones with their applications. The simulation has been performed for the three grounding systems stated previously and the test of tripping of the differential and electromagnetic thermal relay in each type. Finally the three systems have been implemented and tested to show their behaviors under different conditions such a phase to ground fault (load is short circuited).
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    Protective relaying system for education
    (2018) Adrouche, Adel; Bentarzi, Hamid (Supervisor)
    A rapidly growing in power industry requires more reliable operation of power supply that increases complexity of power systems. For attaining this aim new communication solutions and an increased focus on protection may be needed. The power engineering department at IGEE has proposed advanced power systems initiatives to better prepare its students for the power industry field. One of these initiatives is the development of a new laboratory curriculum that uses digital relays to reinforce the fundamental concepts of power system protection. The simple relay protection lab planned at IGEE should include a test bench with distance, over-current and differential relays, and a relay tester that may be used for applying simulated waveforms to the relays. This project proposes a laboratory protection system fulfilling this task. It presents background on power system protection, modern relay technology, and relay testing, to support the design and practical setup of the protective relaying system. The report includes a theoretical part describing the components of power system protection, their function, and attributes in order to understand better the importance of power system protection. Three chapters covering the principles of protective relaying functions relevant to the lab are included. They cover the theory of overcurrent, differential and distance protection.Modeling and simulation can help students to better understand how a relay reacts during a fault or other non-fault disturbances. New design models of overcurrent and differential relay have been implemented in PC using power system simulator PSCAD. Proposals of lab assignments that can be performed in the protective relaying laboratory are presented at the end, using the designed models and the protective equipment available at the institute and donated for the purpose of this work.