Oil-immersed transformers, as an indispensable and important equipment in the power system, have a series of remarkable characteristics, which not only ensure their efficient and stable operation, but also provide important guarantees for the safe and reliable operation of the power system. The following is a detailed description of the characteristics of oil-immersed transformers:
1. Stable and reliable performance
Oil-immersed transformers use transformer oil as an insulating and cooling medium. Its insulation performance is good, which can effectively reduce the insulation distance and reduce costs. At the same time, the transformer oil has low viscosity and good heat transfer performance, which can well protect the core and windings from the influence of moisture in the air. In addition, transformer oil can also protect the insulating paper and insulating cardboard from the effect of oxygen, reduce the aging of insulating materials, and thus extend the service life of the transformer. Therefore, oil-immersed transformers show high stability and reliability in performance.
2. Compact structure and large capacity
Oil-immersed transformers usually use cylindrical structure windings. Except for small-capacity transformers, most of them use copper wire, and the pancake structure is mainly used for high-voltage windings. This structure can balance the ampere-turn distribution of the windings in the transformer to a certain extent, reduce leakage flux, improve mechanical strength, and improve short-circuit resistance. At the same time, the core and winding of the oil-immersed transformer should be reinforced and tightened to ensure that it can withstand short-circuit faults that may occur in the power system and vibrations during transportation. In addition, the oil tank adopts a cylindrical and bell-shaped structure to effectively isolate the transformer from the external environment, play a sealing role, and avoid the infiltration of substances such as oxygen and moisture. These designs make the oil-immersed transformer compact in structure and large in capacity, which can meet the needs of various power systems.
3. Safe and reliable operation
The oil-immersed transformer shows a high degree of safety and reliability during operation. First, its insulation performance is good, which can effectively prevent the occurrence of electrical accidents. Secondly, the heat transfer performance of the transformer oil is good, which can ensure that the transformer maintains a low temperature during operation and avoid failures caused by overheating. In addition, the oil-immersed transformer is also equipped with a complete protection system, such as overcurrent protection, overvoltage protection, temperature protection, etc., to ensure that the power supply can be cut off in time when an abnormal situation occurs to protect the safety of equipment and personnel.
4. Small maintenance workload
The oil-immersed transformer has a simple structure and a relatively small maintenance workload. Since it uses transformer oil as insulation and cooling medium, it does not need to be cleaned and maintained as frequently as dry-type transformers. At the same time, the oil-immersed transformer has good sealing performance, which can effectively isolate the impact of the external environment on the equipment and reduce failures caused by changes in the external environment. In addition, the windings of oil-immersed transformers are usually made of copper wire, which has good thermal conductivity and corrosion resistance, further reducing maintenance costs.
V. Environmental protection and energy saving
With the continuous improvement of environmental awareness, oil-immersed transformers have also performed well in environmental protection and energy saving. Although transformer oil has a certain possibility of combustion, oil-immersed transformers have fully considered environmental factors during design. By adopting efficient and energy-saving design and materials, as well as strict manufacturing processes and quality control, oil-immersed transformers can achieve lower energy consumption and emissions during operation. At the same time, its long service life reduces waste and environmental pollution caused by frequent equipment replacement.
VI. Wide range of applications
Oil-immersed transformers are suitable for various power systems, including industrial, commercial and civil buildings. Its flexible model specifications and installation methods enable oil-immersed transformers to meet the needs of different power systems. At the same time, oil-immersed transformers also have high reliability and stability, and can operate normally in various harsh environments, providing important guarantees for the safe and reliable operation of the power system.
In summary, oil-immersed transformers have the characteristics of stable and reliable performance, compact structure, large capacity, safe and reliable operation, small maintenance workload, environmental protection and energy saving, and a wide range of applications. These characteristics make oil-immersed transformers play an important role in the power system and provide strong support for the safe and reliable operation of the power system.