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

Are you fascinated by the equipment inside the substation? Use this 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.

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

Phase-to-ground short-circuit

Switching surge

Temporary overvoltage

Lightning strike

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 breaker

Disconnect switch

Circuit switcher

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

Wave trap and line tuner

Wave trap, capacitor voltage transformer and line tuner

Wavetrap, capacitor coupled voltage transformer, and line tuner

What's the purpose of a conventional power transformer?

Transform power, voltage, and current

Transform voltage only

Transform voltage and current

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

Install capacitor bank

Harmonic filter bank

Voltage regulator

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 current limiting fuses in series on the switchgear

Add inductor in the transformer neutral

Add series inductors

Buy new transformer with higher impedance (%Z)

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?

Ideal transformer

Voltage transformer

Current transformer

Power transformer

Your score is

The average score is 38%

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

Knowledge Check

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

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

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

What's the purpose of a conventional power transformer?

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

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?

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?

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