What is the substation transformer?

Substations play an important role in handling the electrical power consumed from generation to distribution. They also ensure that power is transformed and converted to suit different electrical needs. Transformers are used for various functions to accomplish that efficiently.

What is the substation transformer

The substation transformer is the heart of the electrical substation. Substation transformers are designed for the installation of large or small three-phase transmission and distribution systems. Substation transformers are installed indoors or outdoors on concrete pads, high and low voltage cables through closed side wall installation bushing or through the cover, and some are through the side wall installation bushing into the operation room.

substation transformers can be divided into distribution substation transformers and station-type transformers：

distribution substation transformer: A distribution transformer designed for installation in a station or substation. It have cover-mounted primary and secondary bushings and can be provided with load tap changers (OLTC).

station-type transformer: A transformer designed for installation in a station or substation. Station transformers are typically located in power substations, which are facilities that control and distribute electricity.

Substation Transformer Benefits

Advanced water-cooling system

Operation of a transformer in an underground cavern always increases the demand for its cooling capabilities. For these transformers, that withstand increased levels of voltage and load, traditional air-cooling was not sufficient. As a solution, an advanced water-cooling system was designed and built.

Powerful and compact go well together

When installing a transformer bank of three 500-kV auto transformers, size is always an issue. This is even more important when the transformer is located under the streets of a megacity. The overall size of the units, how -ever, is considerably compact, measuring just 9 x 5.6 x 7.3 meters (L x W x H) each.

lmpedance reach losses

Not only were the specifications in terms of voltage level extraordinary, the requirements for short-circuit strengths were also more demanding than usual, Each transformer should withstand a certain amount of short-circuit load. However, the auto transformers for the underground substation in Shanghai can stand impedance of up to 22 percent. This means that the units will operate as usual even when exposed to a load 22percent higher than their rated current.

Control of hot spot and excessive losses

High impedance presented challenges for hot spot and stray loss control. Fully supported by a 3D magnetic model tool, the shielding structure design, especially on the tank and clamping frame, increases overall efficiency.

Application of substation transformer

Substation transformers are essential for the safe and efficient transmission of electrical energy through the electrical grid. They are designed to be integrated into transmission and distribution systems of all sizes.

Power distribution

Substation transformers are used to adjust voltage levels to prepare power for local distribution and long-distance transmission.

Critical infrastructure

Substation transformers support critical infrastructures, such as large-scale power distribution grids, mining ventures, and the Canadian 66 kV Power system.

Industrial and residential developments

Substation transformers meet the power requirements of modern industrial and residential developments.

QXG Technology provides you with a one-stop solution for transformers!