Major Substation Equipment - Learn the Purpose, Cost, and Lead Time to Procure

Are you fascinated by the equipment inside the substation? Use this definitive resource to learn about major substation equipment.

Start with the power transformer image below.

Think you have this covered? Test your knowledge, attempt the quiz at the end of this post.

Knowledge Check

Major Substation Equipment - Learn the Purpose, Cost, and Lead Time to Procure 1

Substation Major Equipment

It's only stupid-simple, let's begin.

What's the purpose of a conventional power transformer?

Transform voltage and current

Transform power, voltage, and current

Transform voltage only

A transformer develops an internal fault. Which device would you install on the transformer high-side to interrupt fault current?

Either a breaker or a circuit switcher

Circuit switcher

Disconnect switch

Circuit breaker

An industrial facility is plagued with voltage flicker and poor power factor at the service entrance. What's the remedy?

Voltage regulator

Harmonic filter bank

Install capacitor bank

You are building an interconnect station, tying wind farm generation to the power grid. At the substation, the sources are tied through a tie-breaker. Which device would you install to check voltage magnitude and synchronization?

Voltage transformer

Current transformer

Ideal transformer

Power transformer

For which event should a surge arrester operate? Check all that apply.

Phase-to-ground short-circuit

Switching surge

Lightning strike

Temporary overvoltage

In a distribution substation, the available ground-fault current on the low side of the step-down transformer is excessive, over-dutying the switching equipment. What is your cost-effective solution to reducing the fault current?

Add series inductors

Add current limiting fuses in series on the switchgear

Add inductor in the transformer neutral

Buy new transformer with higher impedance (%Z)

Which combination of devices would you use to implement power line carrier?

Wave trap, capacitor voltage transformer and line tuner

Wave trap and line tuner

Wavetrap, capacitor coupled voltage transformer, and line tuner

Your score is

The average score is 40%

Major Substation Equipment – Learn the Purpose, Cost, and Lead Time to Procure

Knowledge Check

What's the purpose of a conventional power transformer?

A transformer develops an internal fault. Which device would you install on the transformer high-side to interrupt fault current?

An industrial facility is plagued with voltage flicker and poor power factor at the service entrance. What's the remedy?

You are building an interconnect station, tying wind farm generation to the power grid. At the substation, the sources are tied through a tie-breaker. Which device would you install to check voltage magnitude and synchronization?

For which event should a surge arrester operate? Check all that apply.

In a distribution substation, the available ground-fault current on the low side of the step-down transformer is excessive, over-dutying the switching equipment. What is your cost-effective solution to reducing the fault current?

Which combination of devices would you use to implement power line carrier?

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