In this study we will investigate, and gain a greater understanding of, the chemical effects of passivation through laboratory based experiments, and visits into the field. The proposed work will involve collaboration between the School of Chemistry at the University of Southampton and the Tony Davies High Voltage Laboratory, building upon a highly effective collaborative relationship developed during the recently completed, IFI-funded feasibility study on corrosion in the gas phase. Questions that are to be addressed during this study include:
The objective of this proposal is to reduce the risk of transformer failure and unreliability resulting from corrosive sulphur in oil.
This key objective will be met by:
Better understanding of the mechanism by which copper sulphide failures occur and the effectiveness of passivation
Fully understanding the effects, both chemical and electrical, of passivation on transformer insulation performance
Investigating the reasons for silver corrosion in tap changers and to formulate monitoring/assessment strategies in order to provide a measure of asset health.