The structural function of oil-filled transformers

In the main substation of the urban rail transit power supply system, the main transformer usually uses oil-filled transformers. Oil-filled transformers are constructed with iron cores, windings, pressure regulators, and heat sinks. So what is the role of its structure?

This is the content list:

• Iron core

• Winding

• Pressure regulator

• Heat sink

Iron core

The iron core of oil-filled transformers is composed of laminated silicon steel sheets with good magnetic permeability. It forms a closed magnetic flux circuit. The primary and secondary windings of oil-filled transformers are wound on the iron core. The core of oil-filled transformers is divided into the core type and shell type. The oil-filled transformers currently widely used are all core-type structures. The heart-shaped iron core consists of a south iron core column and an iron yoke. The iron core of oil-filled transformers has oil channels for cooling the iron core, which facilitates the circulation of transformer oil and also enhances the heat dissipation effect of oil-filled transformers.

Winding

Oil-filled transformers windings, also known as coils, are conductive loops of oil-filled transformers. The oil-filled transformers are made of copper or aluminum wire wound into a multilayer cylinder. The secondary windings are concentrically sleeved on the iron core column of the oil-filled transformers. For insulation, the low-voltage windings are generally inside the high-voltage windings. The insulating material of oil-filled transformers is wrapped around the wires to ensure the insulation between the wires and the wires to the ground.

Pressure regulator

The oil-filled transformers voltage regulator is set up to ensure the stability of the secondary voltage of the oil-filled transformers. When the power supply voltage fluctuates, the tap switch of the oil-filled transformers is adjusted by the voltage regulator to ensure the stability of the secondary side output voltage. Oil-filled transformers pressure regulating devices are divided into two types: on-load pressure regulating devices and unloaded pressure regulating devices.

Heat sink

The oil-filled transformers radiator is installed on the wall of the oil tank, and the upper and lower parts communicate with the oil tank through pipes. When there is a temperature difference between the upper oil temperature of the oil-filled transformers and the lower oil temperature, the oil-filled transformers pass through the radiator to form oil convection and pass through the radiator. After cooling, it flows back to the oil tank to reduce the oil temperature of the oil-filled transformers. To improve the cooling effect of oil-filled transformers, measures such as self-cooling, forced air cooling, and forced water cooling can be adopted.

Zhejiang Shuntong Electric Co., Ltd. is a professional manufacturing enterprise integrating development, production, sales, and service. The main products are dry-type transformers, oil-filled transformers, special transformers, box-type substations, substations, interconnection pricing, high and low voltage equipment kits, voltage regulating equipment, etc. The above is the structure and related content of the structure. The role of oil-filled transformers. If you are interested in oil-filled transformers, you can contact us, our website is www.sntoom.com. I look forward to working with you very much and hope you can come.