What does a transformer do in a transmission line system?

Transformers transfer electrical energy between circuits completely insulated from each other and this allows using very high (stepped-up) voltages for transmission lines, resulting in a lower (stepped-down) current.

What is overcurrent protection of transformer?

Transformer overcurrent protection is required to protect the primary windings from short circuits and overloads and the secondary windings from overloads. The first factor is the voltage at which the transformer operates. Section 450.3(A) contains the rules for transformers rated over 600 V, nominal.

How do transformer helps in the transmission and distribution of electric power?

For example, a transformer near the generating plant increases the electrical voltage (“steps it up”) at the transmission line, and a transformer at the distribution substation decreases the voltage (“steps it down”) from transmission voltages to voltages appropriate for distribution.

Is transformer used in transmission of electricity?

In electric power transmission, transformers allow transmission of electric power at high voltages, which reduces the loss due to heating of the wires. This allows generating plants to be located economically at a distance from electrical consumers.

What are the different types of protection of transmission line?

If we consider about the protection of transmission line there are three protection types are used to protect these lines .

• Differential Protection.
• Phase Comparison.
• Over Current Protection.
• Earth fault overcurrent protection (Use for protect from large residual current)
• Distance Protection.

Why is a transformer necessary in the transmission of electricity?

Electrical utilities use transformers to change the voltage of electricity as it travels from the power plant to you. The higher the voltage the lower the current that must flow within the transmission lines to deliver the same power. Lower currents produce much less heating and much less power loss.