With the increasing saturation of construction land resources in big cities, the research on substation "indoor, miniaturization, oil-free" 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. The new power transformer, as the key to promote the implementation of the project of "embedded attached substation", will realize the construction of substation in high-density urban center.

According to the introduction, 220kV evaporative cooling power transformer adopts new fluorocarbon material as insulation cooling medium, with no flash point, no combustion and no explosion, realizing the integration of fire protection, environmental protection and heat dissipation“ Compared with the past products, this product has a higher voltage level, a new high capacity of non combustible power transformer, and is more energy-saving, more environmentally friendly and more efficient. " Xiao Xia, chairman of Shenzhen aodian High Voltage Electric Co., Ltd., said that the product development took five years and broke through a series of key technical problems. Among them, Shenzhen has played a great role in providing a good environment for innovative technology.

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 put an end to the fire and explosion accidents of power transformer and ensure the safety of people's lives and property; On the other hand, evaporative cooling power transformer can be embedded in office area, production area and living area, which greatly saves urban land space.

The Dawan District of Guangdong, Hong Kong and Macao is densely populated and has a huge demand for electricity. Take Shenzhen as an example. In 2019, the power load of Shenzhen will reach 19.1 million kilowatts, ranking first in China. There are about 270 substations in Shenzhen, and more than 100 will be built in the future. According to the conventional construction, it covers a huge area. It is estimated that if the embedded substation is replaced, more than 10 substations will be reduced in Guangming District of Shenzhen.

Jia Xingdong, director of Shenzhen Bureau of industry and information technology, said that in many big cities, due to the increasing saturation of constructable land resources, it is of great significance to promote the construction of embedded substation to enhance the comprehensive land development benefits and the coordinated development of economic, social and ecological environment.