With the increasing limitation of conventional energy and environmental issues, new energy sources with environmental and renewable characteristics are receiving more and more attention from countries. In recent years, China has been vigorously applying green energy based on solar and wind energy, and photovoltaic and wind power stations have been promoted in policy.

Urban distribution network refers to the power network of residential distribution, road lighting, line renovation, public distribution, high-rise buildings, etc. It can use dry-type transformers, oil immersed transformers, European style box transformers, American style box transformers, and buried box transformers to meet the demand for urban electricity.

Rail transit includes fields such as highways, railways, underground tracks, and communication. For power applications, multiple small capacity transformers are used to arrange the power network in a linear chain or mesh topology structure.

High risk areas such as petroleum, chemical, and mining attach great importance to equipment safety, followed by power stability. Generally, dry-type transformers are used or installed.