City grid construction will face historic changes

Shenzhen's original world's first non-toxic, non-toxic and environmental protection power transformer was re-transmitted at this year's Hi-tech Fair. On November 16th, the Shenzhen Economic, Trade and Information Committee held a press conference to report that the 110 kV evaporative cooling transformer independently researched and developed by the privately-owned company Austrian High Voltage Company has been safely operated for 15 months and can be fully entered into the commercial batch installation phase. . It is reported that the planned substation construction site in Shenzhen can save more than 30%.

According to the “Operational Explanation” provided by Shenzhen Power Supply Bureau on November 14th, this new transformer was operated on the hanging net of Dapeng Substation on July 31 last year. During this period, the management personnel monitored the operation indicators and performed multiple operations. No obvious abnormalities were found in the tests. The overall operation of the equipment was good.

The expert group of the Shenzhen Power Supply Bureau believes that the 110 kV evaporative cooling transformer adopts an independent research and development of new insulating materials and uses the theory of high-efficiency latent heat cooling. It not only has the non-flammable and explosion-proof characteristics of the gas-insulated transformer, but also has better thermal and aging characteristics than the oil. Immersion transformers, and fundamentally overcome the local overheating problems in the operation of the above two transformers, to solve the problems that plagued the power industry for many years solved.

Xie Shiying, Technical Director of AOL High Voltage Company, said at the press conference that the new liquid insulation material is non-combustible, explosion-proof and capable of extinguishing the fire. It can eliminate potential fire hazards; evaporative cooling technology can effectively solve the hidden dangers caused by transformer heating and ensure the safety of equipment during the peak load period. Operation, so as to achieve and the office area "hug"; In addition, the new liquid insulation material is non-toxic, no impact on the environment, can be recycled and reused, truly green.

This new type of transformer has the highest safety factor in terms of "non-combustible". Compared to the "non-combustible" sulfur hexafluoride gas transformer, the new fluorocarbon medium is more environmentally friendly; the use of evaporative cooling technology makes the transformer overload resistant A great improvement.

China Electric Power Enterprise Association's appraisal committee believes that the Austrian electric high voltage 110 kV evaporative cooling transformer is "initiated in China and its comprehensive performance has reached the international advanced level." Experts of the China Power Industry Standardization Technical Committee for Power Transformers unanimously believe that the evaporative cooling transformer is a transformer technology. The revolution provided a new solution for the realization of the substation's "indoorization and miniaturization." This will bring about historic changes to the construction of power grids in central cities.

Xu Jitai, known as China's "Transformer Industry Expert," made a special trip to attend the press conference. He said, "This new evaporative cooling transformer is currently unique in the world."

According to statistics, as the economy continues to develop, Shenzhen will build more than 170 substations in the next 20 years and the land area will exceed 1 million square meters. The construction of "attached-type substations" means that substations can be built in commercial or residential buildings or office buildings, which can effectively increase the value of land utilization. The new evaporative cooling transformer is non-combustible, explosion-proof, environmentally friendly, and energy-efficient, providing exactly technical support for this purpose. According to estimates, the construction of substations planned in the city can reduce the use of land by more than 400,000 square meters. Jia Xingdong, deputy director of the Shenzhen Economic and Trade Information Commission, said that it will soon introduce specifications for attached substations and support the promotion and application of new evaporative cooling transformers.

Gao Guohui, deputy secretary-general of the Shenzhen Municipal Government, said that the promotion and application of new evaporative cooling transformers will effectively solve the contradiction between future electricity supply and land use requirements in the city, and in particular help the development of Shenzhen's Qianhai region and even the country's innovation zones.