Development trend of dry-type transformer in China in the ne
Release time：2021-03-27 11:23:10 Popularity： Source：未知
With the development and application of dry-type transformers in China, the domestic planning and manufacturing skills have reached the international first-class level, and the future dry-type transformers are expected to be further developed. 1. energy-saving and low-noise, China now has a high level in the study of loss and noise and the manufacture of energy-saving and environmental protection transformers. However, energy conservation and environmental protection is a permanent topic of transformer development, there are many questions worth studying. Introduction and development of new materials, new skills and new skills, such as low loss silicon steel sheet, step-by-step overlapping iron core joints, foil winding construction, deepening of noise discussion, environmental maintenance request, optimal accounting programming, etc. , will make the future dry-type transformer more energy-saving more quiet. High reliability, China has produced tens of thousands of dry-type transformers, running in various areas, key projects, major projects, the demand for commodity reliability is self-evident. In the electromagnetic field theory and its accounting, pouring skills, hot-spot temperature rise, partial discharge mechanism, quality assurance system, reliability engineering and other aspects of a lot of fundamental research, active reliability certification, further improvement of the reliability of dry-type transformer, will be the unremitting pursuit of all, but also dry-change planning producers for a long time. 3, environmental characteristic attestation, these years, already a few dry change company passed ISO14000 environmental attestation. Based on IEC and European code HD464, the experimental study and certification of Thermal Shock Resistance, environmental adaptation and fire resistance of dry-type transformers are carried out. Both the epoxy cast dry-type transformer (CRDT) and the varnished dry-type transformer (OVDT) have a lot of work to do in development and practice. 4. Large capacity, distribution transformer capacity is usually below 2,500 KVA. Now, the development and production of dry-type transformer is based on this. With the continuous increase of the city electric load, the city network regional substation is deepening the city base area, residential quarters, large and medium-sized factories and mines and other load bases, 35kV large-capacity regional power supply dry-type power transformer will be widely used. Now, China has produced 35 kv, 16,000 KVA and 20,000 KVA ultra-large capacity dry-transformer (in which rare units are on-load voltage regulator switch) , if the project needs, can also plan to make a greater capacity of a variety of dry-type transformers. 5. multi-functional combination and intelligentization, from transformers with only single transformer function, to carry out multi-functional combined transformers with forced Air Cooling, maintenance housing, power metering, bus closing, various low-voltage side outlets, computer interfaces, etc. , and to introduce intelligent terminal TTU, with the functions of rare data processing, condition control and condition display, the transformer becomes a kind of multi-functional and intelligent electrical equipment in the best running condition at any time. With the continuous development of information technology, the transformer will further accelerate the improvement of its intelligent process. 6. multi-category development, mainly from distribution transformers, to power plant excitation, auxiliary, Rail Transit Traction rectifier, large current electric furnace, nuclear power stations, marine, oil production platforms and other multi-purpose multi-category development. 7. Multi material, multi variety, epoxy has the status of the world's leading market. A number of companies have worked on new materials and techniques, such as NomexH grade insulation and Amorphous alloys, and have acquired a lot of data and experience, and will work on a variety of areas. In the future, the new development of materials science will certainly provide new opportunities and create a new era for the development of transformer planning and manufacturing skills.
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