New transformer energy efficiency standards lead the green upgrade and transformation of transformer manufacturing

On the afternoon of June 30, 2020, the high-efficiency transformer technology exchange meeting and the new transformer energy efficiency standard interpretation meeting were held in Beijing. Ouyang Haoming, Department of Energy Conservation and Comprehensive Utilization, Ministry of Industry and Information Technology, Han Shagen, Director of Power Distribution Institute, China Electric Power Research Institute, Liu Jie, Vice President of China Electrical Equipment Industry Association, Dean of Shenyang Transformer Research Institute, Liang Qingning, Vice President of Haihong Electric Co., Ltd., and Pang Jing, Vice President of Qingdao Yunlu Advanced Materials Co., Ltd., around the implementation of GB20052- on June 1, 2020 The 2020 "Power Transformer Energy Efficiency Limits and Energy Efficiency Ratings" new standard explains the impact of the transformer industry and users.

 

"Transformer Loop" sorts out some key points for your reference based on the speeches of experts at the conference:

 

1. As a key energy-consuming equipment, transformers are of great significance to reduce energy consumption

 

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2. The Ministry of Industry and Information Technology will use comprehensive policy measures to promote transformer companies to implement standards and meet standards in the future

 

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3. The no-load and load loss indicators in the new energy efficiency standards for transformers have improved significantly

 

1) 10kV oil transformer

 

Level 1 energy efficiency air loss decreased by an average of 20%, and negative loss decreased by an average of 10%

Level 2 energy efficiency air loss decreased by an average of 10%, and negative loss decreased by an average of 20%

Level 3 energy efficiency air loss decreased by an average of 30%, and the negative loss remained unchanged

 

2) 10kV dry transformer

 

Level 1 energy efficiency air loss decreased by an average of 20%, and the negative loss remained unchanged

Level 2 energy efficiency air loss decreased by an average of 15%, and negative loss decreased by an average of 10%

The level 3 energy efficiency air loss is reduced by an average of 20%, and the negative loss remains unchanged

 

3) 10kV amorphous oil transformer

 

Level 1 energy efficiency air loss decreased by an average of 20%, and negative loss decreased by an average of 10%

The level 2 energy efficiency air loss remains unchanged, and the negative loss drops by an average of 15%

 

4) 10kV amorphous dry transformer

 

Level 1 energy efficiency air loss decreased by an average of 30%, and negative loss decreased by an average of 5%

Level 2 energy efficiency air loss decreased by an average of 15%, and negative loss decreased by an average of 10%

 

4. Impact on the manufacturing structure of transformer technology

 

The emergence of the three-dimensional wound core structure, its unique structural characteristics have significant advantages over laminated transformers in terms of complete symmetry of the three-phase magnetic circuit, material and energy saving, noise reduction, improved heat dissipation and overload capacity, and less volume. Immersed transformers or open dry-type transformers, the three-dimensional wound core transformer structure has comprehensive advantages. With the improvement of equipment and manufacturing technology, the production capacity will increase steadily, especially with the successful application of 220kV and 330kV railway traction transformers, the three-dimensional wound core transformer The applicability of the structure has been rapidly expanded, which will play a positive role in guiding the future transformer technology, especially the structural optimization, and will become a mainstream direction in the future.

 

5. The impact of new energy efficiency standards on the structure of the transformer industry

 

1) Powerfully promoted the technological upgrading and innovative development of electrical steel and amorphous alloy products;

 

2) Putting forward higher requirements for the comprehensive performance of transformers will lead to the overall reshuffle of the transformer manufacturing industry. Enterprises must comprehensively improve technology research and development, manufacturing processes, quality control, etc., and accelerate the transformation and integration of transformer manufacturing;

 

3) Relevant government departments will be encouraged to intensify their efforts to guide and require transformer users to transform the market through laws, fiscal and taxation policies, including 1) speed up the elimination of high-energy-consuming transformers; 2) eliminate the production of high-energy-consuming transformers from the source;

 

4) The enthusiasm for the manufacture of high-efficiency and energy-saving transformers will be significantly increased, so that the promotion and application of high-efficiency and energy-saving transformers will penetrate into customers and continue to expand market share.