In order to coordinate with the implementation of the Energy Efficiency Improvement Plan for Distribution Transformers (2015-2017) and to implement the key task of "upgrading the industrialization ability of high-efficiency distribution transformers" defined in the plan, the National Transformer Energy Efficiency Improvement Industry Alliance started the work of upgrading the industrialization ability of high-efficiency distribution transformers this year. An expert seminar organized by the China Electrical Appliance Industry Association was held in Beijing on March 24. The meeting was chaired by Mr. Guo Zhenyan, Vice President and Secretary-General of China Electrical Appliance Industry Association. Dozens of experts, scholars and business leaders from transformer-related industries from all over the country participated in the seminar.

This year is the third year of the implementation of the Distribution Transformer Energy Efficiency Improvement Plan (2015-2017). It is also the most important year for the improvement of the energy efficiency of distribution transformers. It is also the key year for the success of the improvement plan. The main content of this seminar is to analyze the main bottlenecks existing in the distribution transformer industry in China from the aspects of new technology, new materials, key components, tooling equipment and so on, and put forward measures and ways to improve the industrialization ability of high-efficiency distribution transformers, which are the main basis for the relevant work of the national industry management departments. In view of the bottleneck problems existing in the distribution transformer industry in China, it is proposed to set up several special working groups to determine the leading units, participating units and participants of the working groups. Determine the internal task division, work schedule and main technical achievements of each special working group.

With the continuous development of China's economy and the rapid growth of electricity demand, China has promulgated policies to accelerate the development and application of distribution transformers. In recent years, the industrial structure has been gradually adjusted. Power grid companies pay more and more attention to improving the efficiency of power supply and distribution systems. Under the impetus of these policies, the output of high-efficiency and energy-saving distribution transformers has increased, but the overall energy efficiency level is still low. The development of energy-saving transformers is relatively lagging behind, and the potential of energy-saving is huge. China Electrical Appliance Industry Association (CEIA) actively joins the Chinese Academy of Electrical Sciences and the State Grid to promote the product finalization of distribution transformers under the situation that there are many types of distribution transformers. Small-capacity distribution transformers 50KVA, 100KVA, 200KVA and 400KVA are the main models to be promoted. The General Administration of Quality Supervision and Inspection (AQSIQ) promotes the work of quality equivalence of distribution transformers, promotes the identification and consensus of energy efficiency standards and labels of transformers, solves the problem of improving the quality of amorphous ribbons and the design and application of iron cores, improves the production capacity of processing equipment for silicon and steel cores, improves the automation of electrical equipment with the help of intelligent manufacturing 2025, and raises the technology of processing equipment for stacked cores, coiled cores and fold Promotion and promotion.

Since the promulgation and implementation of the Energy Efficiency Improvement Plan for Distribution Transformers (2015-2017), how to speed up the development and application of high-efficiency and energy-saving Distribution Transformers has become the focus of attention of the entire transformer industry. We have seen a large number of transformer enterprises and even some listed companies report and criticize the quality of transformers because they are listed as bad suppliers by the State Grid. As early as 2003, the China Electrical Appliance Industry Association (CEIA) made the development of distribution transformers in the direction of "miniaturization and coiling core" as one of the technical development directions of domestic transformer industry. The product quality of triangular three-dimensional coil core has been fully brought into play, and the bidding volume has shown an upward trend. The three-dimensional coil core transformer is an energy-saving power transformer. It creatively reforms the laminated magnetic circuit structure and three-phase layout of traditional distribution transformer (micro-signal: peidianbianyaqi), so as to optimize the product performance. The three-phase magnetic circuit is completely symmetrical, and the effect of energy saving is remarkable. Noise is greatly reduced, heat dissipation and overload ability is stronger, compact structure and small volume. Nowadays, three-dimensional coiled core transformer has been widely used in the national power grid.

Through individual speeches by various enterprises, the conference discussed the problems found in the process of their own development and the analysis of the current situation of their own industry development, actively discussed how to strengthen industry self-discipline and find the right direction, and some enterprises put out their own tooling equipment video sharing. The whole seminar truly exchanged views on all the major issues found in recent years, the most important of which was the seminar. The big bright spot is that besides the analysis of the industry by the host and the prospect for the future, we should listen to your voices more. Even the opinions of the grass-roots representatives are recorded one by one. Although there is little applause at the seminar, more meditation makes every participant feel responsible and responsible. Perhaps it is this kind of voice from the heart that can really reveal the pain points of the industry and make the industry associate. First-hand information will be obtained to actively promote the distribution transformer industry to grasp the direction of future development trend.

In terms of technology and industrialization, it is necessary to enhance the industrialization ability of high-efficiency distribution transformers. Solve the key raw materials and basic production technology problems of distribution transformer, strengthen the research of energy-saving technology of distribution transformer system, strengthen the application research of new technology, new structure and new materials of high-efficiency distribution transformer, and focus on single-phase distribution transformer, on-load capacity-regulating distribution transformer, folding open-core transformer, aluminum winding distribution transformer, High-Ignition point vegetable insulation oil distribution. Applicable occasions and technical reliability of electric transformers can improve the sustainable innovation ability of distribution transformer industry.

After all the participants'speeches, Director Guo made a comprehensive summary, affirmed the active participation and enthusiastic speech of all the participants in the seminar, and deployed the division of labor of the leading group of "Enhancing the Industrialization Ability of High Efficiency Transformers", which was roughly divided into eleven leading groups for the corresponding branch industries: 1. Oil to Dry Transformer 2, Component 3, Process 4, Design. Computation principle 5, structural design principle 6, tooling equipment 7, test 8, operation 9, price evaluation 10, quality assurance 11, intellectual property rights. At the seminar site, leaders and members will be collected for each group. It is hoped that each group will come up with its work plan and results as soon as possible and report at the recent annual meeting of the High Efficiency Transformer Industry Alliance. (Wen/Wu Yinchuan)