PS4010 Advanced Power System Dynamics Syllabus:
PS4010 Advanced Power System Dynamics Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES
To perform transient stability analysis using unified algorithm.
To impart knowledge on sub-synchronous resonance and oscillations.
To analyze voltage stability problem in power system.
To familiarize the methods of transient stability enhancement.
UNIT I SUBSYSNCHRONOUS RESONANCE (SSR ) AND OSCILLATIONS
Sub sysnchronous Resonance (SSR) – Types of SSR – Characteristics of series –Compensated transmission systems –Modelling of turbine-generator-transmission network- Self-excitation due to induction generator effect – Torsional interaction resulting in SSR – Methods of analyzing SSR – Numerical examples illustrating instability of sub synchronous oscillations –time-domain simulation of sub synchronous resonance – EMTP with detailed synchronous machine model- Turbine Generator Torsional Characteristics: Shaft system model – Examples of torsional characteristics – Torsional Interaction with Power System Controls: Interaction with generator excitation controls – Interaction with speed governors – Interaction with nearby DC converters.
UNIT II TRANSMISSION, GENERATION AND LOAD ASPECTS OF VOLTAGE STABILITY ANALYSIS
Review of transmission aspects – Generation Aspects: Review of synchronous machine theory – Voltage and frequency controllers – Limiting devices affecting voltage stability – Voltage reactive power characteristics of synchronous generators – Capability curves – Effect of machine limitation on deliverable power – Load Aspects – Voltage dependence of loads – Load restoration dynamics – Induction motors – Load tap changers – Thermostatic load recovery – General aggregate load models.
UNIT III SMALL SIGNAL STABILITY ANALYSIS AND ENHANCEMENT
Multi machine small signal stability analysis – Effects of Excitation System – Power System Stabilizer: Block diagram with AVR and PSS, Illustration of principle of PSS application with numerical example, Block diagram of PSS with description, system state matrix including PSS, analysis of stability with numerical example. Multi-Machine Configuration: Equations in a common reference frame, equations in individual machine rotor coordinates, illustration of formation of system state matrix with classical model and variable voltage behind transient reactant model of synchronous machines, illustration of stability analysis using a numerical example. Principle behind small-signal stability improvement methods: delta-omega and delta P-omega stabilizers.
UNIT IV UNIFIED ALGORITHM FOR DYNAMIC ANALYSIS OF POWERSYSTEMS
Need for unified algorithm- numerical integration algorithmic steps-truncation error- variable step size – handling the discontinuities- numerical stability- application of the algorithm for transient. Mid-term and long-term stability simulations.
UNIT V INSTABILITY MECHANISM AND COUNTER MEASURES
Types of Counter measures – Classification of Instability Mechanisms – Examples of Short term Voltage Instability- Counter measures to Short – term Instability – Case studies of Long Term voltage Instability – Corrective Actions against Long-term Instability.
TOTAL: 45 PERIODS
COURSE OUTCOMES
Students will be able to:
CO1: Understand the concepts behind sub-synchronous resonance and detect the SSR by suitable modeling
CO2: Analyze the effect of generation and transmission and load dynamics on voltage stability.
CO3: Analyze the effect of load dynamics on power system voltage stability.
CO3: analyze and enhance small signal stability of the power system.
CO4: Analyze the short-term and long-term stability of the power system using unified stability algorithm.
CO5: study and analyze the various instability mechanisms of voltage stability.
REFERENCES
1. R.Ramanujam,” Power System Dynamics Analysis and Simulation, PHI Learning Private Limited, New Delhi,2009
2. T.V. Cutsem and C.Vournas, “Voltage Stability of Electric Power Systems”, Kluwer publishers,1998.
3. P. Kundur, Power System Stability and Control, McGraw-Hill,1993.
4. H.W. Dommel and N.Sato, “Fast Transient Stability Solutions,” IEEE Trans., Vol. PAS- 91, pp, 1643-1650, July/August1972.
5. Roderick J.Frowd and J. C. Giri, “Transient stability and Long term dynamics unified”, IEEE Trans., Vol 101, No. 10, October1982.
6. M.Stubbe, A.Bihain,J.Deuse, J.C.Baader, “A New Unified software program for the study of the dynamic behaviour of electrical power system,” IEEE Transaction, Power Systems, Vol.4.No.1,Feb:1989,Pg.129 to 138.