⚡️ Reactor in Power Systems — Why It Is Used?

A reactor is an inductive component used in power systems to limit current and absorb reactive power.

It mainly provides inductive reactance (XL) to control system conditions and improve grid stability.

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🔹 Why Reactors are Used?

✅ Limit short circuit current
✅ Control overvoltage
✅ Absorb excess reactive power
✅ Reduce switching surges
✅ Improve system stability
✅ Protect equipment from fault stress

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🔹 Types of Reactors

⚡️ Shunt Reactor
Connected in parallel with the system.
Used in long transmission lines to absorb charging reactive power during light-load conditions.

⚡️ Series Reactor
Connected in series with the line.
Used for fault current limitation.

⚡️ Neutral Grounding Reactor (NGR)
Connected between neutral and ground to limit earth fault current.

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🔹 Where Used?

• Transmission substations
• Capacitor bank protection
• EHV/UHV systems
• Industrial power systems
• Renewable energy grids

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🔹 Simple Concept

Capacitor supplies reactive power.
Reactor absorbs reactive power.

Too much capacitive effect can raise system voltage dangerously — reactors help keep the grid balanced and stable ⚡️

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