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

Abstract 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....

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 2731; no. 1; pp. 12013 - 12018
Main Authors Tao, Xiantao, Deng, Kai, Zhang, Fei, Ren, Ang, Su, Fei, Liu, Xiao, Gong, Hui, Qin, Zihang, Chu, Fanwu
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2024
Subjects
Cable rejuvenation
Catalysts
Diffusion coefficient
Fluids
Permeability
permeability characteristics
Polyethylene
Polyethylenes
polythene
Power cables
rejuvenation fluid
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Summary:Abstract 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.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2731/1/012013