Communications Internationales

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    Analysis of small signal in North Africa Inter-Area Power System
    (IEEE, 2019) Tsebia, Mohammed; Bentarzi, Hamid
    The problem of oscillations in the interconnected power system is a subject of study in several regions. As the widening of the interconnected North Africa power system makes the grid very sensitive to low frequency oscillations, the presence of these oscillations can cause significant damage to the interconnection lines. The development of synchrophasor technology makes the system of measuring grid parameters more accurate with real-time synchronization. In this paper we used the PMU (Phasor Measurement Unit) for oscillations detection and signal analysis
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    Monitoring of isolated standalone renewable energy systems
    (2020) Tsebia, Mohammed; Bentarzi, Hamid
    For many areas, powering their homes or small businesses using a small renewable energy system that is not connected to the electricity grid. The monitoring system is essential for isolated areas; with existing monitoring systems the cost of returning is very expensive and difficult to install. In this work we have proposed a monitoring technique based on PMU technology this technology allows to measure the parameters important for the monitoring and send them by a communication system based on the GSP to PDC platform, and using isolated standalone renewable energy systems for reduce oscillations of interconnection power system. To validate the proposed approach, the developed PMU based monitoring system is implemented using Simulink/Matlab. Then, its performance is tested by power system Simulink model under different operating 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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    A new computer based phasor measurement unit framework
    (IEEE, 2009) Ouadi, A.; Bentarzi, Hamid; Maun, J.C.
    A Phasor Measurement Unit (PMU) is one of the most important measuring devices that can provide synchronized phasor measurements of voltages and currents in real time from widely spread locations in an electric grid. Indeed this device is crucial to the detection of disturbances and characterization of transient swings. In this work, a new PMU has been designed and implemented including the hardware architecture and the software program using a recent developed algorithm of phasor measurement and frequency estimation. The developed PMU is based on computer associated with an acquisition card AD512 using Matlab as software tool for developing its running program as well as its graphical user interface. Finally, this PMU has been tested in laboratory using network simulator that gives good measurements with an acceptable errors even at offfrequency