Why Substation Transformers Are So Important In Power System?

In North America, substation transformers serve as the backbone of power distribution networks, seamlessly stepping up or stepping down voltage levels to facilitate the efficient transmission of electricity. These transformers enable electricity generated at power plants to be transmitted over long distances, reducing energy losses and optimizing the utilization of electrical energy.

Versatility and Customization

One of the key strengths of substation transformers lies in their versatility and customizable design. Manufacturers like Daelim Transformer specialize in tailoring transformers to meet specific project requirements, whether for industrial, commercial, or residential applications. From compact designs suitable for urban installations to robust units serving expansive mining operations, these transformers adapt to diverse operational needs with precision.

Compliance and Reliability

Certified under UL, cUL, CSA, and CE standards, substation transformers from reputable manufacturers ensure compliance with rigorous safety and performance benchmarks. Daelim Transformer, with over 20 years of experience in international projects, adheres to ANSI, IEEE, CSA, DOE, and NEMA standards, guaranteeing reliability and longevity in operation.

Applications Across Industries

The utility of substation transformers extends across various sectors, exemplified by projects such as the Canadian 66 kV Power system, Australian mining ventures, and large-scale power distribution grids in the USA. These transformers support critical infrastructures, enhancing operational efficiency and meeting the demanding power requirements of modern industrial and residential developments.

Technological Advancements

Advancements in transformer technology, including innovative cooling systems, enhanced energy efficiency, and smart monitoring capabilities, further underscore their importance in modern power systems. Features like forced air cooling, HV lightning arresters, and advanced temperature indicators contribute to optimized performance and reduced maintenance overheads.

Economic and Operational Benefits

From an economic standpoint, the selection of an appropriate substation transformer capacity is crucial. Over-sizing can lead to unnecessary initial investments and operational inefficiencies, while under-sizing risks equipment damage and operational constraints. Daelim Transformer's expertise ensures optimal transformer selection, balancing capacity requirements with operational flexibility and cost-effectiveness.

What Is The Purpose Of A Substation Transformer?

The Substation Transformer can not only increase the voltage to send electric energy to the electricity-consuming area, but also reduce the voltage to the voltage used at all levels to meet the needs of electricity consumption. In short, both step-up and step-down must be completed by the transformer.

Read on:10.5MVA-13.8/2.4kV Substation Transformer 

 In the process of transmitting electrical energy in the power system, two losses of voltage and power will inevitably occur. When the same power is transmitted, the voltage loss is inversely proportional to the voltage, and the power loss is inversely proportional to the square of the voltage. The use of transformers to increase the voltage reduces transmission losses.

What Role Does A Substation Transformer Play In The System?

Substation transformers are one of the main equipment in power plants and substations. The function of the transformer is multi-faceted. It can not only increase the voltage and send the electric energy to the electricity-consuming area but also reduce the voltage to the voltage used at all levels to meet the needs of electricity consumption.

Using a substation transformer to increase the voltage reduces transmission losses.

The main functions include:

1. Transmission and distribution of electrical energy. If it is a step-up transformer, it can send electricity out. If it is a step-down transformer, the electric energy can be transmitted or distributed separately;

2. The rated voltage of the primary and secondary sides can be changed;

3. The phase angle of the primary and secondary sides can be changed.

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What Is The Basic Principle And Working Principle Of A Substation Transformer?

Basic Principle:

The basic structural components of a substation transformer are the iron core and windings, which form the body of the transformer.

 To improve the heat dissipation conditions, the body of the large and medium-capacity transformers is immersed in a closed oil tank filled with transformer oil, and the connection between each winding and the external circuit is led out through an insulating sleeve.

To make the transformer operate safely and reliably, accessories such as an oil conservator, gas relay, and safety air passage are also provided.

 Read more: What are the main parts of a 1500kva substation transformer that affect the price？

What Is An Ideal Substation Transformer?

An ideal substation transformer is an idealized model of an actual transformer, an ideal scientific abstraction of mutual inductance components, and a coupled inductance in the extreme case.

Several idealized conditions for an ideal transformer:

Condition 1: There is no loss, it is considered that the wire around the coil has no resistance, and the magnetic permeability of the ferromagnetic material used as the core is infinite.

Condition 2: There is no leakage flux, that is, Φs1=Φs2=0, coupling coefficient K=1, it is full coupling, so Φ11=Φ21, Φ22=Φ12.

Condition 3: The parameters are infinite, that is, the self-inductance coefficient and the mutual inductance coefficient.

but satisfy:

In the above formula, N 1 and N 2 are the turns of the primary and secondary coils of the transformer, respectively, and n is the turns ratio. The above three conditions cannot be satisfied in engineering practice, but in some practical engineering estimates, within the allowable error range, the actual substation transformer is treated as an ideal transformer, which can simplify the calculation process.

Since K=1, L1→∞, L2→∞, there is M→∞.

In short, an ideal substation transformer is a transformer with no magnetic loss, no copper loss, and no iron loss.

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Daelim Substation Transformer Projects

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Substation Transformer Ratings

Substation transformers are primarily utilized in power distribution systems, with ratings typically not exceeding 25 MVA and high voltages up to 46 kV. The following table illustrates Daelim's substation transformer ratings.

If you require information on other substation transformer ratings, please contact Daelim Transformer.

Learn more: Ultimate Guide To Transformer Sizes and Ratings

Substation Transformer Sizes

The sizes of substation transformers vary based on capacities, voltages, materials, standards, and designs. The following table provides a list of Daelim substation transformer sizes.

For additional information on sizes, please contact Daelim Transformer.