Power Electronics Application to Power System (EX-702 (A)) - Important Questions

What is a Flexible AC Transmission System (FACTS) controller? Explain the classification and different types of FACTS controllers.

Explain with equivalent circuit diagram the working principle and operation of Thyristor Controlled Series Compensator (TCSC). What are its merits and demerits?

Explain the working principle and operation of a Unified Power Flow Controller (UPFC) with necessary circuit diagram.

What is STATCON (static condenser)? Explain in detail its working and operation.

What is a Static VAR Compensator (SVC)? Explain its design, operation, working and characteristics with series vs shunt compensation.

What is power quality? Explain the various power quality problems in distribution systems and the impact of poor power quality on system efficiency, reliability and operation.

What are harmonics? Which types of harmonics are generated by loads? Explain the causes and adverse effects of harmonics on the power system.

Explain HVDC converters and their characteristics.

What is the use of filters in transmission and distribution lines? Explain the different types of filters used.

Distinguish between voltage sag and undervoltage. Briefly discuss the techniques used for sag/dip mitigation.

Explain the factors to be considered when designing active filters. Also explain their limitations.

Explain the working, design and operation of D-STATCOM for power quality improvement in distribution systems.

What do you mean by rotor angle stability? How is it enhanced by FACTS controllers?

How does an energy storage device help to store and reuse energy? Discuss the applications of energy storage devices.

Explain the working of pumped storage hydroelectric power plant.