In the current era of rapid changes in the energy landscape, the new-generation oil-immersed transformer redefines the standards of power transmission with technological innovations. It uses nano-composite insulating oil. Compared with traditional mineral oil, its insulation strength is increased by 30%, and the breakdown voltage can reach more than 70kV, effectively reducing the risk of partial discharge and building a solid safety line for high-voltage and high-capacity power transmission. Meanwhile, the high thermal conductivity of the nano-oil, combined with the design of spiral heat-dissipating oil pipes, increases the heat dissipation efficiency by 25%. Even in extreme high-temperature environments, it can ensure the stable operation of the transformer.​

In terms of structural design, the oil-immersed transformer introduces the modular concept. The iron core adopts the stepped joint lamination technology, which reduces no-load losses and also minimizes magnetostrictive noise. The windings are manufactured using the foil winding process, optimizing the current distribution and enhancing the short-circuit withstand capability. The oil tank shell is integrally formed by laser welding technology. Combined with the double-layer corrugated plate structure, it not only strengthens the mechanical strength but also realizes the self-cooling function, adapting to complex outdoor environments. In addition, the transformer is equipped with an array of multi-parameter sensors that can monitor key data such as oil temperature, oil chromatogram, and winding deformation in real-time, and upload the data to the cloud through the Internet of Things module. Operation and maintenance personnel can use AI algorithms for fault prediction and health diagnosis, realizing the transformation from passive maintenance to proactive operation and maintenance.​

In terms of environmental protection and energy conservation, the oil-immersed transformer performs outstandingly. It replaces traditional mineral oil with biodegradable insulating oil, with a natural degradation rate of over 90% within 3 years after disposal, significantly reducing the risk of pollution to soil and water sources. With the application of low magnetic density design and amorphous alloy cores, the no-load losses are reduced by 70% compared with conventional products, and the annual power savings are equivalent to the carbon sequestration of planting 12,000 adult trees. Its overload capacity is also remarkable. Equipped with an intelligent load management system, it can dynamically adjust the output power according to the real-time load and operate continuously for 8 hours without abnormalities under 1.5 times the rated load.​

In special application scenarios, the oil-immersed transformer plays an irreplaceable role. On offshore wind power platforms, its fully sealed and salt-fog-resistant design effectively withstands the strongly corrosive marine environment and ensures the stable grid connection of wind power. In large-scale mining sites, its vibration-resistant and dust-proof structural design enables it to operate reliably under harsh working conditions. In energy storage power stations, it works in tandem with lithium battery packs to achieve efficient power conversion and flexible allocation. From traditional energy to the new energy field, the oil-immersed transformer is helping to build a safer, more efficient, and greener power ecosystem with its all-around performance.