Strategies to replace, refurbish, repair and upgrade power transformers: The Spanish experience

摘要

Different strategies to replace, repair, refurbish and upgrade power transformers and the Spanish experience in this field are presented, covering both high voltage transmission and generator step up applications. Those include repair and refurbishment operations on site and in manufacturing facilities, the alternative to replace windings of existing units to increase the power output and to reduce load losses, the use of standardized units, universal transformers and multi-voltage polytransformers for contingency planning and the progressive re-powering on site of the main transformers in a nuclear power plant.