Communications Internationales

Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/11

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Author: search.filters.author.Ouadi, Abderrahmane

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Now showing 1 - 8 of 8
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    An investigation of different PMU phasor estimation techniques based on DFT using MATLAB
    (IEEE, 2020) Mahboubi, Meriem; Bentarzi, Hamid; Ouadi, Abderrahmane
    Phasor Measurement Unit (PMU) is the essential component in the modern power grid which plays a significant role in monitoring, control and protection of the power system networks in real time. PMUs are able to provide time stamped synchronized measurements of voltage and current phasors using Global Positioning System (GPS) satellites, in microseconds, to maintain the power system network free of faults and hence healthy. Different phasor estimation techniques such as Kalman filter and Discrete Fourier transform (DFT) may be used by PMUs to estimate phasors. In this research work, the implementation of non-recursive, recursive and smart DFT techniques have been investigated for modeling the PMU using MATLAB. Then, mathematical differences among these algorithms are briefly highlighted as well as advantages and drawbacks of each
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    Measurement and monitoring system of ac machines using LabVIEW
    (IEEE, 2017) Kahlouche, Ahmed; Bouroudi, Yassine; Ouadi, Abderrahmane
    The paper presents a system that uses Laboratory Virtual Instrument Engineering Workbench (LabVIEW) software to monitor, and to control the state of an electrical machine depending on user imposed limits. In this system, the real-time variables of an electrical machine are measured and transferred to a controller (PC) through Data Acquisition Card (DAQ). The NI USB 6009 DAQ is selected for this project in order to provide precise measurement inputs, these measurements allow us to continuously observe, and evaluate the operating parameters quantities of the machine using the LabVIEW environment that handles processing and presentation of the calculations, and trip the circuit automatically if these quantities exceed a safe value by using a selected line on the DAQ to control a relay arrangement interfaced with the power grid's contact
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    A new framework of smart auto-recloser
    (IEEE, 2018) Bentarzi, Hamid; Ouadi, Abderrahmane; Abdelkader, Abdelmoumene
    Almost all type of faults that occur in distribution network are self-clearing faults, so the protective relays must not break the power circuit and interrupting the power supply to the consumers. Therefore, a protective device such as auto-recloser is more suitable for this situation. An auto-recloser is a circuit breaker associated with a control circuit that may automatically re-close the circuit breaker after opening it due to the fault detection. Since more than 80% of the faults are self clearing in their nature hence, power outage time can be reduced if the reclosing function is automated and carefully planned. In this paper, a new frame work of smart auto-recloser has been implemented in PC associated with NI7851 Card using the Labview. To validate the present work, the performance of developed device has been tested by Power System Simulator under different conditions.
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    Distance protective system performance enhancement using optimized digital filter
    (2011) Bentarzi, Hamid; Ouadi, Abderrahmane; Zitouni, Abdelkader
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    Microcontroller based protective relay testing system
    (World Scientific and Engineering Academy and Society (WSEAS), 2011) Ouadi, Abderrahmane; Bentarzi, Hamid; Chafai, Mahfoud; Zitouni, Abdelkader
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    PC based testing system for protective relay
    (IEEE, 2013) Chafai, Mahfoud; Bentarzi, Hamid; Ouadi, Abderrahmane; Zitouni, Abdelkader; Recioui, Abdelmadjid
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    Measurement quality enhancement using digital filter in power grid integrating TCSC
    (IEEE, 2015) Zitouni, Abdelkader; Ouadi, Abderrahmane; Bentarzi, Hamid
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    Digital distance relay reliability enhancement using real-time filter
    (2011) Ouadi, Abderrahmane; Bentarzi, Hamid; Maun, Jean Claude
    In the conventional three - zone stepped directional distance scheme, distance relay is used to provide the primary as well as remote backup protection. However, the mal-operation of this relay under stressed conditions such as power swing and switching action transient instability may affect the reliability of the whole protective scheme. The voltage and current phasors needed by the distance relay for determining the impedance may be measured with integrated Phasor Measurement Unit. However, this measurement accuracy may be affected by several power disturbances such as fast and slow dc offsets decaying due to sudden current changes, inter-harmonics, etc. To avoid these effects for improving the quality of measurements and hence the distance relay reliability, this work proposes a new real-time filtering method for removing the unwanted DC offset and hence improving SDFT algorithm. To validate the present method, the performance of developed distance relay is tested using the data generated by Simulink/MATLAB simulator. The obtained simulation results are satisfactory