Due to the need for power transmission, the world's first transformer was born in 1876, and this transformer was dry-type. But until the middle of the twentieth century, dry-type transformers were limited to the manufacture of low-voltage and small-capacity transformers. In the late 1950s and early 1960s, with the emergence of new materials such as epoxy resin, the world successfully developed epoxy resin vacuum-cast dry-type transformers, and quickly gained wide application in many fields such as distribution transformers with voltage levels of 35kV and below. With the adjustment and development of society, the rapid progress of science and technology, the emergence of new materials, new production equipment and newly developed technologies, dry-type transformers have been upgraded to various types, and the capacity has also increased significantly.
Dry-type transformers are widely used in various fields due to their high safety, environmental protection and good performance. The main application scenarios of dry-type transformers include:
1. Commercial and civil buildings
The main functions of transformers include voltage rise and fall, transmission loss reduction, power distribution and interconnection of power systems. By using transformers, high voltage can be reduced to the required low voltage, or low voltage can be increased to the required high voltage to meet different load requirements. This not only reduces the power loss during transmission, but also ensures that electricity is safely and efficiently supplied to various types of users.
According to the characteristics of dry-type transformers, such as strong overload capacity, fire and explosion prevention, no pollution, low noise, obvious energy saving effect, and maintenance-free. Dry-type transformers are widely used in shopping malls, large supermarkets, office buildings, hotels, and residential buildings in communities, providing safe and stable power supply, ensuring the normal operation of equipment such as elevators, lighting, and air conditioning, and providing personnel with a comfortable working and living environment.
2. Industrial field
Transformers play a vital role in the power system in the industrial field, and can realize voltage rise and fall transformation to meet the needs of different equipment and transmission.
According to the characteristics of dry-type transformers, such as high mechanical strength, strong short-circuit resistance, small partial discharge, good thermal stability, and high reliability.
In the fields of manufacturing, petrochemical industry, power station, power production and transmission, dry-type transformers provide power support for production lines, automation equipment, power transmission, robots, etc., ensuring the continuity and stability of various industries in the process of using electricity, and providing a stable foundation for the development of the country.
Common types of transformers in industry include: electric furnace transformers, rectifier transformers, frequency converter transformers, auto-coupling transformers, etc.
3. Public facilities
According to the high safety, environmental protection, easy maintenance, and applicability to special environments of dry-type transformers. Hospitals, schools, libraries, museums and other places also widely use dry-type transformers to provide stable power supply for medical equipment, teaching equipment, lighting, etc., to ensure the normal operation of these facilities.
For example, the main reason for the medical transformer is to provide electrical isolation, voltage conversion, filter power supply noise and ensure safety. Medical isolation transformers can electrically isolate medical equipment from the main power supply to reduce the risk of electric shock to patients and medical staff. This isolation can prevent the current from interfering with each other, ensure the electrical isolation between medical equipment and the external power grid, and thus reduce the risk of leakage current harming the human body. Voltage conversion is also an important reason for installing transformers. Medical isolation transformers can convert the power supply voltage into a voltage suitable for medical equipment to ensure the normal operation of the equipment. This is especially important for medical equipment, because different equipment may require different voltage supplies, and transformers can provide accurate voltage conversion to ensure the stable operation of the equipment.
4. Special environment
According to the unique structure and characteristics of dry-type transformers, it performs well in harsh environments such as humidity and corrosion. Dry-type transformers are suitable for high temperature, humid areas and areas with severe pollution, such as deserts, oceans, and chemical industries. They are also used in places that require high security, such as nuclear power plants and other facilities, and are highly favored for their high security and environmental protection.
For example, marine transformers or offshore platform transformers. The role of transformers on offshore platforms is mainly reflected in ensuring the stability and safety of power supply. The environment in which offshore platforms are located is complex and harsh. Transformers are an important part of the power system. At the same time, offshore platform transformers are mainly used to boost the power generated by generators and transmit them to land. Transformers in special environments must be able to withstand extreme conditions such as high salinity, high humidity and temperature fluctuations to ensure the continuity and safety of power supply.
5. New energy field
Due to the characteristics of dry-type transformers, such as high safety, oil-free, low loss, strong heat dissipation and moisture resistance, dry-type transformers have also begun to be widely used in wind power, photovoltaic power generation and other fields. They are used to boost the power generated by new energy power generation equipment and connect it to the power grid to achieve effective utilization of renewable energy.
With the in-depth development of the power industry and the innovation of science and technology, the application field of dry-type transformers will be broader in the future. It is an indispensable part in the future renewable energy field and smart grid construction.
