Search results for: PROTRUSIONS

• The Effect of Protrusions on the Initiation of Partial Discharges in XLPE High Voltage Cables

  Publication

  • M. AlShaikh Saleh
  • S. S. Refaat
  • M. Olesz
  • H. Abu-Rub
  • J. Guziński

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Year 2021

  This paper is focusing on 3D Finite Elements Analysis (FEA) based modelling of protrusions as defects or imperfections in the XLPE high voltage cable. This study is aiming to examine the impact protrusions have on the initiation of partial discharges. Spherical and ellipsoidal protrusions with different sizes at the conductor screen of the high voltage cable is an essential content of this paper. In addition, a spherical gas-filled...

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• Colvolutional calibration of AFM probe

  Open Research Data

  open access

  • A. Zieliński
  • J. Ryl

  - series: Scanning Probe Microscopies data

  Atomic force microscopy is based on the interaction of the examined surface with a probe of a pyramidal shape, tipped with a sharp end with a radius of curvature ranging from single nanometers to hundreds of nanometers. The resolution of the obtained image is of course dependent on the above-mentioned geometric size, and the resulting image is a convolutional...

• Inception and Propagation of Electrical Trees in the Presence of Space Charge in HVAC Extruded Cables

  Publication

  • M. A. Saleh
  • S. S. Refaat
  • M. Olesz
  • H. Abu-Rub

  - IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION - Year 2021

  This paper presents the space charge impact on the inception and propagation of electrical trees in cross-linked polyethylene (XLPE) insulation via simulations and experimentation. A 3D finite element analysis (FEA)-based modeling is proposed to simulate electrical trees via a needle embedded on the XLPE insulation. The proposed FEA model demonstrates the influence of the space charge magnitude and polarity on the initiation of...

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