Transformer Substation – Learn About Its Different Types

The electrical power is consumed on a large scale. It is a difficult task to fulfill this demand. This can be accomplished with the help of power generating substations. These are built at various locations and the power is transmitted from the substations to the location of the load center. So, there is a need for high transmission networks to complete this work.

Surplec supplies substation transformers in Canada. It has inventory in abundance of high voltage transformers and switchgear. It also buys surplus and accepts exchanges. These devices can be modified according to your needs.

Meaning of Substation

It is a type of electrical system having a high voltage capacity. It is mainly used to control the apparatus, electrical circuits, etc. The main purpose is to convert AC (alternating current) to DC (direct current).

A few of these are very small in size and has an inbuilt transformer and switches. Some are very big and have different types of equipment, circuits switches, and types of transformers.

Kinds of Transformer Substations

These are Step-up type substation, customer substation, system Stations, distribution type substation, step down type substation, underground distribution substation, switchyard

Step- Up Type Substation

This makes use of a big power transformer to increase the voltage levels so that the transfer can be done to faraway locations. It includes the circuit breakers and transmission circuits as needed.

Customer Substation

These are meant to supply power to a specific client for a particular business. The necessities of the customers are fulfilled up to a large extent.

System Stations

In this type of substation, a large amount of power is transferred across the stations. The electrical energy is supplied to the circuits. These make use of excellent services. It is very difficult to build and maintain the system stations.

Distribution Type Substation

The substation is placed where the main voltage distributions are available and stepped down. It is done to supply voltages to the customers who use the distribution network. Two phases have a voltage of 400 volts and the voltage between neutral and any other phase is around 230 volts.

Step-down Type Substation

These are placed in electrical networks at different points. It is possible to connect these at various locations of the network that work as the distribution lines. It can change the transmission to 69 kV.

Underground Distribution Substation

These substations are installed underground in the urban areas as space is scarce in the same. The problem related to space is solved. The area can be used for constructing, buildings and malls, etc.


This serves as a mediator among transmissions and it is possible to maintain equal voltage in the switchyard. The generated energy is supplied from the power plant to the closest transmission lines.


Thus, a transformer substation is an integral part of an electrical generation, transmission, and distribution system. The substation is an essential component of a power grid. It forms an essential connection among various transmissions.

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