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Oil-immersed transformerLike the dry-type transformer, it is a very important part of the power system.The design and manufacturing process affects the stable operation and efficiency of the power system. It is mainly composed of iron core, winding and oil tank.

Today we will introduce it to you in detail through this article.Oil-immersed transformerHope to help you better choose the right power transformer.

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What isOil-immersed transformer

‌Oil-immersed transformerIt is a kind of power equipment that the iron core and winding are soaked in insulating oil, and the oil is used to insulate and dissipate heat.‌ It usesPrinciple of electromagnetic inductionConvert voltage.

Oil-immersed transformerThe composition of

First of all, the iron core is the core part of the transformer, which is made of silicon steel sheet. The purpose of the core is to provide a low reluctance path to concentrate the magnetic field on the windings and improve the efficiency of the transformer. At the same time, the iron core can also reduce the fluctuation of the magnetic flux density and the loss of the iron core.

Secondly, the windings of the transformer are the high voltage side winding, the low voltage side winding and the neutral point winding, which are used to transmit and transform electric energy respectively. The windings are bound on the iron core by insulating materials, and the windings are in quarantine through insulating gaskets. The material of the winding is usually copper wire, because copper has excellent electrical and thermal conductivity.

Finally, the oil tank is the shell of the transformer, which is used to store the insulating oil of the transformer. Insulating oil is a kind of liquid with good insulating properties, which is used to separate the winding and the core and play a cooling role. Insulating oil can also effectively isolate the damage of air and moisture to the winding and prolong the service life of the transformer.

Oil-immersed transformerThe role of

First of all, oil-immersed power transformers have excellent insulation performance, which enables them to work safely and reliably under high voltage. By providing insulation between the windings of the transformer and between the windings and the ground, the oil-immersed power transformer effectively prevents the breakdown and short circuit of electrical equipment and ensures the stable operation of the power system.

Secondly, the oil-immersed power transformer also has good cooling effect. The transformer is filled with insulating oil, which can not only improve the insulation performance, but also effectively dissipate the heat generated by the transformer, ensure that the transformer will not be overheated and damaged under long-term high-load operation, and prolong the service life of the equipment.

In addition, the oil-immersed power transformer can also provide the stable voltage required by the power system. In the power system, it is often necessary to reduce the power transmitted by high-voltage transmission lines to low-voltage power suitable for users through transformers. Oil-immersed power transformer can adjust the voltage by changing the number of turns of the winding to ensure the voltage stability of each link in the power system, thus ensuring the normal operation of user equipment.

Oil-immersed transformerApplication of

Firstly, oil-immersed power transformers are widely used in power transmission and distribution systems. In the power grid, oil-immersed transformer plays an important role in voltage regulation and power distribution.

Secondly, in the industrial production process, power transformers are used to adjust the voltage and current required by different equipment to ensure the normal operation of production equipment. Especially in the field of heavy industry, such as metallurgy, chemical industry and so on, high-power oil-immersed power transformers are indispensable energy conversion equipment.

In addition, oil-immersed power transformers are also widely used in urban construction and infrastructure construction.

Design principle of oil-immersed transformer

Power matching principle

Oil-immersed power transformers need to be designed according to the actual load demand to determine the rated capacity and rated voltage and other parameters to ensure that the output power of the transformer can meet the needs of the system, while not causing energy waste due to over-design.

Material selection principles

The core components of oil-immersed power transformer include winding and iron core. The selection of high-quality insulating materials and magnetic materials can improve the efficiency and reliability of the transformer and reduce energy loss and heat loss.

Design principle of cooling system

A good cooling system can effectively reduce the working temperature of the oil-immersed power transformer, prolong the service life of the equipment, improve the load capacity and stability of the transformer, and reduce the failure rate.

Oil-immersed transformerMaintenance

1.Oil quality inspection: transformer oil is an important insulating medium and cooling medium, so it is very important to check the oil quality regularly. The color, turbidity, acid value and other indicators of the oil should be checked, and if abnormal oil quality is found, it should be replaced or treated in time.

2.Oil level check: Maintaining a proper oil level is essential for the proper operation of the transformer. Regularly check whether the oil level is within the specified range, and add or drain the oil in time to keep the oil level at a proper position.

3.Insulation performance inspection: It is essential to inspect the insulation performance of the transformer regularly. Insulation performance can be evaluated by dielectric strength test of insulating oil and bushing insulation test, so as to find and solve potential problems in time.

4.Temperature monitoring: The transformer will generate a certain amount of heat during operation, so it is necessary to monitor the temperature to ensure that the temperature of each component of the transformer is within the normal range. The temperature of the transformer can be monitored by the infrared thermometer and other equipment, so that abnormal conditions can be found in time and measures can be taken.

5.Dehumidification treatment: There is a certain amount of moisture inside the transformer, and long-term accumulation will affect its insulation performance and operation stability. Therefore, regular dehumidification is necessary, and the moisture inside the transformer can be removed by vacuum dehumidification and other methods.

Sum up

Through the above introduction, we are interested inOil-immersed transformerWith a deeper understanding, today's power shortage is a global challenge, as an indispensable transformer in the power system, it has become a problem that many large enterprises need to consider.

We have served many customers from all over the world, who have strong demand for transformer manufacturing, not only that, we also provide transformer production equipment sales and installation for the United States, Mexico, Italy, Germany, Vietnam, India, Pakistan and South Africa and other countries.

If you are also interested in our equipment, or want to purchase winding machine, slitting machine, forming machine and other equipment, please contact our online engineers.