With the increasing saturation of construction land resources in big cities, the research on "indoor, miniaturization and oil-free" of substations is of great significance to realize the coordinated development of substation construction and economic, social and ecological environment. A few days ago, Shenzhen Aodian High Voltage Electric Co., Ltd. released an innovative product-220kV evaporative cooling power transformer. As the key to promote the landing of the "embedded attached substation" project, the new power transformer will realize the construction of substations in high-density urban centers.

According to reports, the 220kV evaporative cooling power transformer uses a new type of fluorocarbon material as the insulating cooling medium, no flash point, non-flammable, non-explosive, to achieve the integration of fire protection, environmental protection and heat dissipation. "Compared with past products, this product has a higher voltage level, a new high in non-combustible power transformer capacity, and is more energy-efficient, more environmentally friendly and more efficient." Xiao Xia, chairman of Shenzhen Aodian High Voltage Electric Co., Ltd., said that the product took five years to develop and broke through a series of core technical key problems. Among them, Shenzhen has played a great role in providing a good environment for innovative technologies.

Li Hanming, former deputy chief engineer of Shenzhen Power Supply Bureau Co., Ltd., believes that 220kV evaporative cooling power transformer is a breakthrough product with milestone significance in the history of power transformer technology development. On the one hand, it can prevent power transformer fire and explosion accidents and protect people's lives and property safety; on the other hand, evaporative cooling power transformers can be "embedded" in office areas, production areas, and living areas, greatly saving urban land space.

Guangdong, Hong Kong and Macao Great Bay Area city contiguous, densely populated, electricity demand is huge. Take Shenzhen as an example. In 2019, Shenzhen's power load will reach 19.1 million kilowatts, ranking first in the country. There are about 270 substations in Shenzhen, and more than 100 will be built in the future. According to the regular, the construction area is huge. It is estimated that if the embedded substation is replaced, more than ten substations can be reduced in Guangming District of Shenzhen City alone.

Jia Xingdong, director of the Shenzhen Municipal Bureau of Industry and Information Technology, said that in many large cities, due to the increasing saturation of construction land resources, promoting the construction of embedded attached substations is of great significance for improving the comprehensive land development benefits and the coordinated development of the economic, social and ecological environment.