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    Wyświetlanie 1-3 z 3
    Tytuł:
    Finite element modeling for electric field and voltage distribution along the cap and pin insulators under pollution
    Autorzy:
    Ghermoul, Oussama
    Benguesmia, Hani
    Benyettou, Loutfi
    Powiązania:
    https://bibliotekanauki.pl/articles/2203634.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    1512L
    electric field
    electrical potential
    COMSOL Multiphysics
    pollution
    pole elektryczne
    potencjał elektryczny
    zanieczyszczenie
    oprogramowanie COMSOL Multiphysics
    Opis:
    The knowledge of the behavior of both the electric potential and electric field is one of the main factors needed when designing an insulator. Using AutoCAD software a 2D cap and pin 1512L insulator model was created in the clean state and under pollution from one to five insulators separately making a chain of insulators for a total of 10 models. Later they are imported to COMSOL Multiphysics 5.6 software, simulations of the 1512L insulator were made to see the effect the pollution has and the differences that occur on the distribution with the addition of more insulators in the chain. The potential distribution starts to develop a pattern after a certain number of insulators in the chain while the pollution induces high value spikes in the field distribution. Finite-element-analysis for numerical simulation of the pollution effect in outdoor insulators: a review and a novel method.
    Źródło:
    Diagnostyka; 2023, 24, 2; art. no. 2023201
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of heterogeneous cavities on the electrical constraints in the insulation of high-voltage cables
    Autorzy:
    Bakri, Badis
    Benguesmia, Hani
    Mira, Aya
    M’ziou, Nassima
    Powiązania:
    https://bibliotekanauki.pl/articles/2174483.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    cables
    defect
    electric field
    electric potential
    heterogeneous cavities
    kabel
    wada
    pole elektryczne
    potencjał elektryczny
    Opis:
    The main insulation layer is the most important layer of the high-voltage cable, and the quality of this material directly affects the life of the cable. It is also known that contamination, porosity and associated partial discharges in the insulation can affect the service life of cables. In this paper, we use the COMSOL Multiphysics software, which is based on the finite element method in AC/DC, 2D electrostatic. Our study shows the effect of heterogeneous cavities on the functioning of electrical cables. This work contains the study of electric field distribution and potential of a model of high voltage cable; we took into account the absence and the presence of heterogeneous cavities. The study was conducted using numerical results with mathematical validation. The obtained results are considered satisfactory, favorable and very promising.
    Źródło:
    Diagnostyka; 2023, 24, 1; art. no. 2023109
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental study of pollution and simulation on insulators using COMSOL® under AC voltage
    Autorzy:
    Benguesmia, Hani
    Bakri, Badis
    Khadar, Saad
    Hamrit, Fareh
    M’ziou, Nassima
    Powiązania:
    https://bibliotekanauki.pl/articles/327338.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    insulator
    flashover
    pollution
    high voltage
    potential
    electric field
    izolator
    przeskok
    wysokie napięcie
    pole elektryczne
    potencjał
    Opis:
    The flashover of pollution, observed on the insulators used in high voltage transmission, is one of the most important power transmission stakes. It is a very complex problem due to several factors including the modelling difficulties of complex shapes of insulators, different pollution densities at different regions, non-homogeneous pollution distribution on the insulator surface and unknown effect of humidity on the pollution. In the literature, some static and dynamic models have been developed by making some assumptions and omissions to predict the flashover voltages of polluted insulators. This paper aims to experimentally analyse the flashover process and simulation of the distributions of the potential and the electric field under 50 Hz applied voltage on a real model simulating the 175CTV outdoor insulators largely used by the Algerian Company of Electricity and Gas (SONELGAZ). This real model is studied under non-polluted (distilled water), and polluted (distilled water and sand) environments. The simulations were carried out by using the COMSOL multiphysics software. This program uses the finite element method to solve the partial differential equations that describe the field. Experimental results made in the laboratory and simulation results are original and found to be congruent.
    Źródło:
    Diagnostyka; 2019, 20, 3; 21-29
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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