With the continuous development, innovation and extensive application of dry-type transformer in China, the domestic design and manufacturing technology has reached the world-class level, and the future dry-type transformer is expected to get further development.
1. Energy saving and low noise
In China, the research on loss and noise and the manufacture of energy-saving and environment-friendly transformers have reached a high level. However, energy saving and environmental protection is an eternal topic of transformer research and development, and there are still many problems worthy of study. The introduction and development of new materials, new processes and new technologies, such as low loss silicon steel sheet, stepped core seam, foil winding structure, noise research, environmental protection requirements, computer optimization design, will make the future dry-type transformer more energy-saving and more peaceful.
2. High reliability
Tens of thousands of dry-type transformers have been produced in China, which are running in various fields, key projects and major projects. The requirements for product reliability are self-evident. A lot of basic research on electromagnetic field theory and its calculation, pouring process, hot spot temperature rise, partial discharge mechanism, quality assurance system, reliability engineering, etc., and actively carrying out reliability certification to further improve the reliability of dry-type transformer will be the unremitting pursuit of people, and also the long-term subject of dry-type transformer design and manufacture.
3. Environmental characteristics certification
In recent years, several dry change enterprises have passed the ISO14000 environmental certification. Based on IEC and European standard HD464, the test research and certification of thermal shock resistance, environmental adaptability and fire resistance of dry-type transformer are carried out. There is a lot of work to be done in the research and development of dry-type transformer (crovdt) and dry-type transformer.
4. Large capacity
The capacity of distribution transformer is usually below 2500kVA. At present, the development and production of dry-type transformer is mainly based on this. With the continuous increase of urban power load, the regional substation of urban power grid goes deeper and deeper into the urban central area, residential area, large and medium-sized factories and mines and other load centers. The 35kV large capacity dry-type power transformer for regional power supply will be widely used. At present, China has produced 35kV, 16000kva and 20000kva super large capacity dry transformers (several of which are on load voltage regulation by Mr switch). If the project needs, we can also design and manufacture a variety of dry transformers with larger capacity.
5. Multi function combination and intellectualization
From the transformer with single transformation function to the multi-functional combined transformer with forced air cooling, protective shell, power metering, enclosed bus, various low-voltage lateral outgoing lines, computer interface, etc., to the introduction of TTU intelligent terminal, which has the functions of data processing, state control, state display, etc., so that the transformer becomes a multi-functional intelligent, at any time in the most advanced state Electrical equipment in good working condition. With the continuous development of information technology, transformer will further accelerate the improvement of its intelligent process.
6. Multi field development
From the distribution transformer based, to power plant excitation, auxiliary, rail transit traction rectifier, high current furnace, nuclear power station, marine, oil platform and other multi-purpose and multi field development.
7. Multiple materials and varieties
Epoxy resin vacuum casting dry-type transformer occupies the global leading market. Many enterprises have done some product research and development on Nomex H-class insulation, amorphous alloy and other new materials and new processes, obtained a lot of data and experience, and will do in-depth research and development in many fields. The new development of material science and manufacturing technology in the future will provide new opportunities and new era for the development of transformer design and manufacturing technology.
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