How to choose a suitable oil immersed power transformer?

Oil immersed power transformer is a common equipment in the power system, used to convert electrical energy from one voltage level to another to meet the needs of the power system. Choosing a suitable oil immersed power transformer requires consideration of multiple factors, such as power, voltage level, operating environment, maintenance requirements, etc. In the selection process, these factors should be comprehensively considered to ensure the selection of a suitable transformer.

Firstly, the capacity of the transformer should be selected based on the required power. Generally speaking, the capacity of a transformer should be selected based on the load requirements. The capacity of a transformer is usually expressed in kilovolt amperes (kVA), and the required transformer capacity can be calculated based on load demand and current. At the same time, it is necessary to consider the characteristics of peak load and transient load, and leave a certain margin of appropriate power to cope with the uncertainty of transformer load.

Secondly, the rated voltage of the transformer should be selected based on the voltage level. Oil immersed power transformers generally have different rated voltage levels to choose from, such as 10 kV, 35 kV, etc. The appropriate voltage level needs to be determined based on the power supply standards of the power grid and the required load voltage level. The rated voltage of the transformer needs to match the voltage level of the power grid in order to function properly.

In addition, the usage environment is also one of the important factors to consider when selecting an appropriate oil immersed power transformer. Oil immersed power transformers generally need to be installed in sealed transformer rooms to prevent leakage and pollution. The transformer room needs to have good ventilation and heat dissipation conditions. If the environmental humidity is high and it is rich in corrosive or flammable gases, it is necessary to choose an oil immersed power transformer with good sealing and explosion-proof performance.

In addition, maintenance requirements for transformers should also be considered. Oil immersed power transformers require regular maintenance and upkeep, including checking the oil level, oil quality, insulation performance, and cooling system. Therefore, when choosing a transformer, it is necessary to consider the difficulty and cost of maintenance. Some modern oil immersed power transformers are designed with automatic monitoring and alarm systems, which can provide more convenient maintenance and management.

When selecting oil immersed power transformers, attention should also be paid to the manufacturer's credibility and product quality. Oil immersed power transformers are one of the core equipment in the power system, and their quality and reliability have a significant impact on the operation of the power grid. We should choose products produced by reputable and reliable manufacturers, while paying attention to the technical parameters, design characteristics, and practical application of transformers, in order to select transformers that are suitable for our needs.

In summary, selecting a suitable oil immersed power transformer requires comprehensive consideration of factors such as power, voltage level, operating environment, and maintenance requirements. In the selection process, analysis and comparison should be conducted based on specific needs and situations, and an oil immersed power transformer that matches the requirements should be selected. A correct understanding and selection of oil immersed power transformers is crucial for ensuring the normal operation and reliable power supply of the power system.