EE · SEMINAR TOPIC FACTS Devices
Electrical Engineering Seminar Report

FACTS Devices

Flexible AC Transmission Systems (FACTS) use power electronic devices to control and improve the performance of AC transmission networks.

They enhance power flow control, voltage stability and system capacity.

Types of FACTS Devices

Shunt devices like the Static VAR Compensator (SVC) and STATCOM control voltage by injecting or absorbing reactive power. Series devices like the Thyristor Controlled Series Capacitor (TCSC) control line impedance and power flow. Combined devices like the UPFC do both.

By controlling reactive power and impedance electronically, FACTS devices increase transmission capacity and stability without building new lines.

Quick Facts

AspectDetails
BranchElectrical Engineering (EE)
Topic TypeTechnical Seminar / Project Report
DifficultyIntermediate – Advanced
Best ForFinal-year BTech seminars & presentations
IncludesExplanation, key points, FAQs & references

Important Points to Remember

  • Power-electronic controllers for AC transmission.
  • Shunt devices: SVC, STATCOM control voltage.
  • Series devices: TCSC control line impedance.
  • UPFC combines series and shunt control.
  • Improve power flow, stability, and capacity.
  • Avoid the cost of building new transmission lines.

Frequently Asked Questions

FACTS devices are power electronic controllers used in AC transmission systems to control power flow, voltage, and stability.

Both control reactive power, but SVC uses thyristor-switched reactors and capacitors, while STATCOM uses a voltage-source converter for faster, smoother control.

They improve power flow control, voltage stability, and transmission capacity without the need to construct new transmission lines.