EE2026 POWER SYSTEM DYNAMICS L T P C
3 0 0 3
To understand the concept of modelling the power system and the components for simulating the
transient and dynamic behaviour of power system meant for the stability studies.
i. To review the modeling of synchronous machine, the excitation system and speed-governing
ii. To study small signal stability analysis of a single-machine infinite bus system with excitation
system and power system stabilizer.
iii. To study transient stability simulation of multimachine power system.
UNIT I INTRODUCTION 9
Basics of system dynamics – numerical techniques – introduction to software packages to study the
Concept and importance of power system stability in the operation and design - distinction between
transient and dynamic stability - complexity of stability problem in large system – necessity for
reduced models - stability of interconnected systems.
UNIT II SYNCHRONOUS MACHINE MODELLING 9
Synchronous machine - flux linkage equations - Park’s transformation - per unit conversion -
normalizing the equations - equivalent circuit - current space model - flux linkage state space model.
Sub-transient and transient inductances - time constants.
Simplified models (one axis and constant flux linkage) - steady state equations and phasor
UNIT III MACHINE CONTROLLERS 9
Exciter and voltage regulators - function and types of excitation systems - typical excitation system
configuration - block diagram and state space representation of IEEE type 1 excitation system -
saturation function - stabilizing circuit.
Function of speed governing systems - block diagram and state space representation of IEEE
mechanical hydraulic governor and electrical hydraulic governors for hydro turbines and steam
UNIT IV TRANSIENT STABILITY 9
State equation for multimachine system with one axis model and simulation – modelling of
multimachine power system with one axis machine model including excitation system and speed
governing system and simulation using R-K method of fourth order (Gill’s technique) for transient
stability analysis - power system stabilizer. For all simulations, the algorithm and flow chart have to
UNIT V DYNAMIC STABILITY 9
System response to small disturbances - linear model of the unregulated synchronous machine and
its modes of oscillation - regulated synchronous machine - distribution of power impact - linearization
of the load equation for the one machine problem – simplified linear model - effect of excitation on
dynamic stability - approximate system representation - supplementary stabilizing signals - dynamic
performance measure - small signal performance measures.
TOTAL : 45 PERIODS
1. P.M. Anderson and A.A.Fouad, ‘Power System Control and Stability’, Galgotia Publications,
New Delhi, 2003.
2. P. Kundur, ‘Power System Stability and Control’, McGraw Hill Inc., USA, 1994.
1. M.A.Pai and W.Sauer, ‘Power System Dynamics and Stability’, Pearson Education Asia, India,
2. James A.Momoh, Mohamed.E. EI-Hawary. “ Electric Systems, Dynamics and stability with
Artificial Intelligence applications”, Marcel Dekker, USA First