Where are dry-type transformers used?

Dry-type transformers, also known as air-cooled transformers, are a type of transformer that uses air as the cooling medium. Due to their excellent safety, environmental compatibility, and economic benefits, these transformers are widely used across various fields. This article will explore the working principle, characteristics, and specific application scenarios of dry-type transformers.

Working Principle and Characteristics of Dry-Type Transformers

The main working principle of dry-type transformers is based on electromagnetic induction to achieve voltage conversion. They do not contain liquid insulating oil and use gas as the insulation and cooling medium. Their main characteristics include:

1. High safety: Since they do not use flammable oil, the fire risk of dry-type transformers is significantly reduced, making them particularly suitable for places with high safety requirements.

2. Good environmental protection: Dry-type transformers do not contain any oil substances, avoiding environmental pollution from oil spills, and they comply with modern environmental standards.

3. Low noise: Dry-type transformers operate with relatively low noise levels, making them suitable for densely populated areas.

4. Low maintenance costs: Unlike oil-immersed transformers, dry-type transformers do not require regular oil level checks and replacements, thereby reducing maintenance costs and workload.

Application Fields of Dry-Type Transformers

Due to their superior characteristics, dry-type transformers are widely used in several key areas:

1. Building power distribution: Dry-type transformers are commonly used in the electrical distribution systems of large buildings, such as commercial complexes, office buildings, and residential communities. In these places, where people are densely packed and fire risks are high, the use of dry-type transformers is particularly important.

2. Industrial sector: In factories and production workshops, dry-type transformers can provide the necessary voltage and current to meet the operational needs of various equipment. Especially in industries with strict environmental requirements, such as food processing and pharmaceutical production, the pollution-free characteristics of dry-type transformers make them the preferred choice.

3. Transportation: In transportation hubs like railways, subways, and airports, dry-type transformers are often used in power supply systems to ensure the stable operation of transportation equipment. Their high reliability and safety provide strong support for transportation.

4. Wind and solar power generation: Dry-type transformers have also been widely applied in the renewable energy sector. In wind and photovoltaic power generation systems, dry-type transformers can boost the generated low-voltage current for grid connection. Given that these sites are often located in remote areas, the stability and lower maintenance requirements of dry-type transformers make them an ideal choice.

5. Electrified railways: To ensure the safe and efficient operation of electrified railways, dry-type transformers are widely used in power conversion and distribution. These transformers are usually installed at substations and convert high voltage to provide stable power for electric locomotives.

6. Data centers and communication bases: In the context of rapid development in modern information technology, data centers and communication bases have very high requirements for power stability and safety. Due to their superior performance, dry-type transformers have become the preferred equipment for supplying power in these places, ensuring the normal operation of equipment.

Given their advantages in safety, environmental protection, low noise, and low maintenance costs, dry-type transformers are widely used in building power distribution, industry, transportation, renewable energy, and data centers. With ongoing technological advancements and increasing demands for safety and environmental protection, the application prospects of dry-type transformers will be broader, making positive contributions to the modernization of the power system. In the future power distribution network, dry-type transformers will continue to play an increasingly important role.