Development and Challenges Faced by Insulating Materials for Environmentally Friendly Dry-type Transformers
The insulating materials in dry-type transformers currently suffer from issues such as non-degradability and low recycling rates.This contradicts the fact that green and low-carbon goal for China's economic and social development.It is urgent to carry out development and applications of environmentally friendly dry-type transformers.To address this issue,two main technical routes are explored.One is the development of degradable and recyclable epoxy resins.Despite the challenges of improving performance and thermal stability,innovative molecular structure design has the potential to enhance their application performance.The other is the use of degradable materials such as silicone rubber as alternatives.Silicone rubber,with its excellent thermal resistance,insulating properties,and recyclability,is a promising option,although its electrical and mechanical properties need to be further enhanced to meet industrial requirements.At present,the application of silicone rubber in dry-type transformers has not been fully studied,especially regarding its long-term operational reliability and durability,which still need to be verified.Looking forward,the development of environmentally friendly dry-type transformers will focus on the creation of safe,stable,and long-life materials and improving their recyclability to better align with China's green development strategy.Although degradation and recycling of materials have been achieved under laboratory conditions,performance and efficiency improvements remain key in practical applications.Therefore,optimizing recycling technology,reducing costs,and enhancing recycling efficiency will be crucial directions for the sustainable development of electrical insulating materials.
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