Comparison of aged XLPE power cables restoration by injecting two various anti-failure nanofluids

Shirazi, Amir Hossein Merati; Hosseini, Seyedmohsen

doi:10.1016/j.engfailanal.2018.03.034

Cited by 17 publications

(7 citation statements)

References 18 publications

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“…The relative diffusion cefficient Dr is the ratio of D to D0 in the same diffusion system. The defining equation is shown in equation (3).…”

Section: Basic Calculation Modelmentioning

confidence: 99%

“…In injection cable rejuvenation technology, the selection of an appropriate rejuvenation fluid formula is a critical factor influencing the effectiveness of rejuvenation. Currently, commonly used rejuvenation IOP Publishing doi:10.1088/1742-6596/2731/1/012013 2 fluid formulations include Phenylmethyldimethoxysilane (PMDMS) [2], and Diphenyldimethoxysilane (DPDMS) proposed by Hirazi A and Hosseini S H [3], McCary J L et al proposed Tolylethylmethyldimethoxysilane (TEM) and Cyanoalkylmethyldimethoxysilane (CAM) [4], as well as Trimethylmethoxysilane (TMMS) that can be used to improve the diffusion performance of rejuvenation fluids [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Study on the Selection of Power Cable Rejuvenation Fluids Based on Relative Diffusion Coefficients

Tao,

Deng,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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The present work presents and formulates a method for calculating the relative diffusion coefficient of rejuvenation fluid in injection cable rejuvenation technology, and the permeability characteristics of rejuvenation fluid in polyethylene insulation materials are calculated and compared. The main components of the rejuvenation fluid such as (Phenylmethyl-dimethoxysilane) PMDMS, (Diphenyldimethoxysilane) DPDMS and (Trimethylmethoxysilane) TMMS, and the catalysts such as (Tetra-isopropyl titanate) TIPT and (Tetra-isobutyl titanate) TIBT were analysed in depth. The article uses theoretical calculation method, combined with Helmroth and Limm-Hollifield models, to calculate the diffusion coefficients and relative diffusion coefficients of these compounds in polyethylene. Through comparative analysis of theoretical calculations, the optimal parameters for evaluating the permeability characteristics of rejuvenation fluids were determined. The research results show that TMMS has the best permeability characteristics in polyethylene, followed by PMDMS and DPDMS. In the catalyst, TIPT has better permeability characteristics than TIBT. And when selecting the composite formula for cable rejuvenation fluid, it is more convenient to use the relative diffusion coefficient as an index of diffusion characteristics. This research provides important theoretical basis and practical guidance for the formulation selection of cable rejuvenation fluids.

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“…The relative diffusion cefficient Dr is the ratio of D to D0 in the same diffusion system. The defining equation is shown in equation (3).…”

Section: Basic Calculation Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on the Selection of Power Cable Rejuvenation Fluids Based on Relative Diffusion Coefficients

Tao,

Deng,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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“…Initially, paper insulation was used in the power industry; however, it was replaced by plastics (thermosets and thermoplastics) later. Crosslinked polyethylene, abbreviated as XLPE, is widely used for insulation purposes because of its high operational temperature, reliability, high dielectric strength, low dielectric loss, chemical resistance, and durability 4–6 . Several studies were reported on XLPE based materials for medium and high voltage cable insulation purposes, and these reports were mainly focused on electrical properties like breakdown strength, partial discharge, electrical treeing, and so on 7–15 .…”

Section: Introductionmentioning

confidence: 99%

Exploring the reinforcing mechanism and micromechanical models for the interphase characteristics in melt mixed XLPE‐fumed SiO₂ nanocomposites

Thomas

Abraham³

et al. 2022

J of Applied Polymer Sci

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We present an experimental and theoretical exploration of well‐dispersed, distinctively stable, fumed SiO2 crosslinked polyethylene (XLPE) nanocomposites. The mechanical properties of fumed SiO2 /XLPE nanocomposites were assessed with different concentrations of fumed SiO2, which had noticed that network morphology was immensely influential for the performance of mechanical properties. A reasonable exploration of micromechanical models of composites indicated that the theories of Nicolais–Narkis, and Pukanszky provided an excellent fit to yield strength data of the composites considering the effect of the interphase between XLPE and SiO2. Furthermore, it highlights that the experimental data can be superimposed with the static micromechanical models of Nicolais–Narkis, and Pukanszky. Owing to the proper dispersion of the SiO2 nanospheres in the XLPE matrix, the filler‐polymer interactions are found to be enhanced. Moreover, it resulted in the excellent insulation properties of the nanocomposites, which makes it a better candidate for electrical cable insulating materials. The combined results of structural characterizations by Fourier Transform Infrared Spectroscopy (FTIR), X‐Ray Diffraction (XRD), Differential Scanning Calorimeter (DSC), Dynamic Mechanical Analysis (DMA), Atomic Force, and Transmission Electron Microscopy (AFM, TEM) confirmed the role of fumed SiO2 as a reinforcing mediator in the current system.

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“…These irregularities distort the electrical field across the insulation increasing the degree of non-uniformity of the field. Moreover, the conduction and polarization properties are impacted, and the intensity of partial discharges occurring rises, which places the HV cable in a susceptible condition [2,[8][9].…”

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Saleh

Refaat

Olesz

et al. 2020

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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 void is placed inside and outside the protrusions, and a water tree produced from protrusions is under consideration. The partial discharge influence taking place at the protrusions and the stress enhancement factor is determined for all the variations mentioned to quantify the rise in the inception of partial discharges due to the protrusions.

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Comparison of aged XLPE power cables restoration by injecting two various anti-failure nanofluids

Cited by 17 publications

References 18 publications

Study on the Selection of Power Cable Rejuvenation Fluids Based on Relative Diffusion Coefficients

Study on the Selection of Power Cable Rejuvenation Fluids Based on Relative Diffusion Coefficients

Exploring the reinforcing mechanism and micromechanical models for the interphase characteristics in melt mixed XLPE‐fumed SiO₂ nanocomposites

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Comparison of aged XLPE power cables restoration by injecting two various anti-failure nanofluids

Cited by 17 publications

References 18 publications

Study on the Selection of Power Cable Rejuvenation Fluids Based on Relative Diffusion Coefficients

Study on the Selection of Power Cable Rejuvenation Fluids Based on Relative Diffusion Coefficients

Exploring the reinforcing mechanism and micromechanical models for the interphase characteristics in melt mixed XLPE‐fumed SiO2 nanocomposites

Bulletin of the Polish Academy of Sciences: Technical Sciences

Contact Info

Product

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Exploring the reinforcing mechanism and micromechanical models for the interphase characteristics in melt mixed XLPE‐fumed SiO₂ nanocomposites