On-load integrated treatment of giant power transformers in a severe scenario
For transmission enterprises, asset and risk management is a core function, and it is strongly linked with both revenue and reliability of electricity supply.
byVander Tumiatti et al.
For transmission enterprises, asset and risk management (according to ISO 55001:2014 [1] and ISO 31000:2018 [2]) is a core function, and it is strongly linked with both revenue and reliability of electricity supply.
Understanding that transformers are the backbone of its grids, a primary electrical company in the Middle East area invested a lot of resources in the assessment of its strategic assets.
Looking to increase the resilience of its system, the electrical company appointed GCC LAB as assets manager, particularly in the project of maintenance service for the prevention of failures / damages to improve the reliability and availability and to extend transformer service lifetime.
Problems encountered with corrosive sulfur in mineral insulating oil are related to the formation of metallic sulfides (copper and silver) in the active part of the transformer under operating conditions, which can be the cause and contributing factor to transformer failures. Metallic sulfides deposited in the paper insulation or detached from metal surfaces significantly reduce dielectric status of the transformer’s active part.
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