Power System Dynamics and Control — Summer 2024

What do you mean by power system dynamics? State the advantages of power system dynamic analysis.

Discuss the role of Damper winding in synchronous generators’ performance analysis.

Draw and explain the equivalent circuit of a salient pole synchronous generator. Also, explain various time constants of the equivalent circuit.

Give the classification of power system stability studies and briefly explain the voltage stability analysis.

Explain the necessary assumptions made in the classical model of the synchronous generator for steady-state stability analysis.

Analyze the power system steady-state stability and discuss the concept of eigenvalue.

With the help of a neat and clean block diagram, explain the different operating states of a typical power system network.

What is Park’s transformation? Discuss the advantages of this transformation.

Define transient stability and explain the need for transient stability analysis of a power system network.

Define per unit system and obtain the per unit values of a power system network components from their rated values.

Why the excitation system is required? Give the classification of excitation systems.

Analyze the synchronizing and damping torque without an automatic voltage regulator (AVR).

Draw a general functional block diagram of an excitation control system and explain the function of each block.

Enlist and differentiate the generator models suggested by the IEEE Task Force report published in 1986.

What are the various data required for synchronous machines? Discuss the tests performed on synchronous machines to obtain such data.

Discuss in detail the application of synchronous generator Model 1.1 as suggested by the IEEE Task Force. OR1

What is the compensation of a transmission line? Which compensation (series or shunt) is suitable for a transmission line? Justify your answer.

List the methods of static VAR compensations (SVCs). Explain to anyone in detail.

Discuss in detail the control characteristic of SVC.

What is a Power System Stabilizer (PSS)? Discuss the need for using PSS for dynamic studies.

Discuss in detail the use of HVDC links and static VAR controllers (SVCs) for power system stabilization.

Explain transmission line modelling by D-Qtransformation using α-β variables.

Why load is considered as a constant impedance model?

Explain polynomial and exponential representation of static load.

Explain in detail any two sub-synchronous resonance (SSR) mitigation techniques.