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

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

Explain the equivalent circuit diagram and working principle of Thyristor Controlled Series Compensator (TCSC), including its merits and demerits.

What is a FACTS controller and classification / different types of FACTS controllers

Explain static VAR compensator (SVC) including series vs shunt compensation, design, operation, working and characteristics

Explain what STATCON (static condenser) is and how it works.

Explain the difference between series and shunt compensation with diagrams, including the working of Static Var Compensator (SVC).

Objectives of FACTS and how reactive power is controlled in FACTS devices

Define these terms: static phase shifter and super capacitors.

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

Define rotor angle stability and explain how it is enhanced by FACTS controllers.

Define power system reliability and explain its enhancement using FACTS controllers in a multi-machine system.

Explain how FACTS controllers control power flow and improve system stability.

What is the use of filters in transmission and distribution lines and what are the different types of filters used?

Explain HVDC converters and their characteristics.

Explain what harmonics are, their causes and types generated by loads, and their adverse effects on the power system.

Describe the following :

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

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

Compare active filters and passive filters.

What should be the standards of power quality in power system?

Explain the terms voltage sag, voltage swell, and series resonance.

What is the fundamental principle of operation for controlling harmonics?

How do power electronic conditioners help to reduce the power quality problems in the power system?

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

Explain the working and applications of dynamic static synchronous series controllers.

How does an energy storage device help store and reuse energy, and what are its applications?

Explain the working of pump storage hydro electric power plant.

Write a short note on the following terms.

Describe the structure of energy/power storage systems/devices in detail.

Explain any two of the following