Browsing by Author "Mahboubi, Meriem"

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    An application of phasor measurement unit to monitor a grid connected solar energy generation system
    (2020) Mahboubi, Meriem; Bentarzi, Hamid; Ouadi, Abderahmane
    While renewable energies are gaining more interest among today’s power sources, solar panels are increasing their contribution to the power grid day by day due to the greatest potential they have. Identical to all other types of power generation plants, the integration of solar energy sources into the grid increases its complexity and poses challenges to maintain the system’s stability. In this paper, an adaptation of a phasor measurement unit (PMU) based solution is proposed for solar plants integration in regular power grids. PMUs can measure the stamped phasors of the utility, which are critical parameters for the operation of power devices feeding power into the grid. This paper discusses the use of PMUs for providing the phase angle to system synchronization in the case of high penetration of solar energy into the grid, where the instantaneous monitoring of the voltage, current and power flow is an important requirement.
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    An application of PMU in solar energy generation Plant Connected Power Grid
    (2019) Mahboubi, Meriem; Bentarzi, Hamid; Ouadi, Abderahmane
    Solar energy is one of the most abundant green energies in our planet. In order to satisfy the world demand of electrical energy, solar energy may be used. Identical to all other types of power generation plants, the integration of the solar energy source in power grid has an impact on its operation. Thus, when the electrical power is injected into the power grid by the solar energy source, the system electrical parameters must be well monitored for synchronization purpose. This can be accomplished with the aid of synchro-phasors measurement units. The phase angle of the utility is a critical parameter for the operation of power devices feeding power into the grid like PV inverters. There are many techniques to obtain the grid phase angle such as the zero-crossing detection and the orthogonal phase locked loop. This research work discusses the use of PMUs (Phasor Measurement Unit) for providing this important parameter to system synchronization in the case of high penetration of solar energy in the power grid
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    Application of Synchro-Phasor Measurement Unit in Smart Grid Including Renewable Energy
    (2022) Mahboubi, Meriem; Ouadi, Abderrahmane
    Renewable energy is one of the most abundant energies in our planet. In order to satisfy the world demand of electrical energy, solar and wind energy may be used. Identical to all other types of power generation plants, the integration of these renewable energy sources in smart power grid has an impact on its operation. Thus, when the electrical power is injected into the power grid by these energy sources, the system electrical parameters must be well monitored for synchronization purpose. This can be accomplished with the aid of synchro-phasors measurement units. The phase angle of the utility is a critical parameter for the operation of power devices feeding power into the grid such as PV and wind energy inverters. There are many techniques to obtain the grid phase angle such as the zero-crossing detection and the orthogonal phase locked loop. This research work discusses the use of Phasor Measurement Unit (PMU) for providing this important parameter to system synchronization in the case of high penetration of solar or wind energy in the power grid.
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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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    A new framework of PMU based on FPGA
    (Université M'hamed Bougara : Institut de Génie Electrique et Ectronique, 2023) Mahboubi, Meriem; Bentarzi, Hamid(Directeur de thèse)
    The approach that has been developed in this research work is to generate a configurable input signal, sample it and use the different estimation techniques such as non-recursive, recursive and smart DFT to estimate the phasors. These estimated values would be incorrect if the input signals are at an off-nominal frequency and the phase angles would drift away from the true values. To correct this issue, first, the off-nominal frequency has been estimated using Phasor measurement angle changing technique. Then, it has been used to correct the phasors. Finally, the developed PMU model has been verified and tested with a Grid connected PV system. Smart grid is a modernized electrical supply network in which information is communicated bi-directionally using digital communication technology. SYNCHRONIZED phasor measurement units (PMUs) were first introduced in early 1980s, and since then have become a mature technology with many applications, monitoring, control and protection of the power system networks in real time, which are currently under development around the world. 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
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    Simulation and Implementation of single phase, single stage, grid connected photovoltaic system
    (2016) Ayad, Mohamed; Mahboubi, Meriem; Kheldoun, Aissa
    This work describes the single-phase, single-stage, Grid-Connected Photovoltaic System (GCPV) using Hysteresis Current Control Inverter. The complete Matlab/Simulink simulation and hardware implementation of the system are perform.To achieve reliable and efficient power generation from photovoltaic systems; perturb and observe (P&O) maximum power point tracking (MPPT) method has been used. The latter maximizes the power from the PV system under various lighting conditions. A four-MOSFET bridge inverter that takes DC power supplied by a solar panel and transforms it into a 220 volt AC power source. A Hysteresis current controller has been employed to adjust the inverter’s frequency according to the grid frequency. As compared to other control methods, the proposed solution provides robust current regulation, achieves unity power factor, low total harmonic distortion (THD) and maximizes the PV power extracted from the PV generator. Simulation and experimental results are provided and commented to demonstrate the effectiveness of the design.