A new approach to monitor copper sulphide migration in paper oil insulation of transformers

Ravi, Kumar A; Akshatha, A.; Rajan, J. Sundara

doi:10.1109/icdl.2014.6893135

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Various condition monitoring tools have been developed to detect the causes of transformer failures. Since the beginning of the 21 st century, various techniques have been proposed to monitor copper sulphide-related failures in oil-filled power transformers [1][2][3][4][5][6]. According to Yang et al, [7], this type of failure is caused by the high operating temperature of transformers and the presence of corrosive sulphur compounds (i.e., corrosive by-products resulting from the breakdown of dibenzyl disulphide (DBDS)).…”

Section: Introductionmentioning

confidence: 99%

Predicting the Ageing Time of Thin Film Sacrificial Copper Strip Sensors Over a Wide Range of DBDS Concentrations

Sharin Ab Ghani,

Nur Izyan Husnina Zulkefli,

Mohd Shahril Ahmad Khiar

et al. 2023

ARASET

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Catastrophic transformer failures are often attributed to corrosive sulphur-related faults. However, the existing challenge lies in the absence of practical, real-time monitoring techniques for sulphur corrosion, especially on-site. Previous studies have proposed the use of thin film sacrificial copper strip sensors as a promising solution to address this issue. Yet, their effectiveness in detecting corrosive by-products resulting from varying concentrations of DBDS breakdown remains unexplored. To bridge this knowledge gap, this study introduces an alternative technique that utilizes MATLAB software for linear interpolation and extrapolation. The findings demonstrate the capability of this technique to predict the ageing time of thin film sacrificial copper strip sensors when exposed to corrosive by-products derived from DBDS breakdown across a broad concentration range. This research aims to provide a valuable contribution towards enabling effective monitoring of sulphur corrosion and enhancing transformer maintenance practices.

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