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primary topic: Sulfur Corrosion Mechanism in Power Transformers and Its Detection Techniques: A Review

Sulfur Corrosion Mechanism in Power Transformers and Its Detection Techniques: A Review
type: AcademicArticle
type: Article
abstract: Monitoring the progression of sulfur corrosion in insulating oils, particularly mineral oils, gives valuable information on the general health of the power transformers, thus preventing the possibility of catastrophic failures. The sulfur corrosion mechanism in insulating oils remains unclear although it is believed that this phenomenon is initiated by the presence of corrosive by-products of dibenzyl disulfide (DBDS) (i.e., mercaptans and elemental sulfur). A number of models have been developed that explain the chemical reactions, formation, and deposition of copper sulfide in power transformers. Irrespective of the sulfur corrosion mechanism, monitoring the progression of sulfur corrosion in power transformers is crucial before effective countermeasures can be implemented. The capability and limitations of standard and non-standard corrosion test methods based on the quality of the insulating oils and paper insulations are extensively reviewed in this article. This sets out the ultimate goal of searching for a reliable and quantifiable online condition monitoring tool to track the progression of sulfur corrosion in transformer insulating oils in real-time and facilitate timely remedial intervention. © 1994-2012 IEEE.
date: 2022
volume: 29
issue: 6
is part of: IEEE Transactions on Dielectrics and Electrical Insulation
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Institute of Electrical and Electronics Engineers Inc.
type: Organization

IEEE Transactions on Dielectrics and Electrical Insulation
type: Collection
issn: 10709878

Norazhar Abu Bakar
type: Person
given name: Norazhar Abu
family name: Bakar

Sharin Ab Ghani
type: Person
given name: Sharin Ab
family name: Ghani

Mohd Shahril Ahmad Khiar
type: Person
given name: Mohd Shahril Ahmad
family name: Khiar

Imran Sutan Chairul
type: Person
given name: Imran Sutan
family name: Chairul

Mohd Aizam Talib
type: Person
given name: Mohd Aizam
family name: Talib

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primary topic: Sulfur Corrosion Mechanism in Power Transformers and Its Detection Techniques: A Review