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Power System Stsbility

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 ELKL5350 - Power System Stability   3+0+0  ECTS: ?

 
Year / Semester : Fall
:Course Level : Graduate
Compulsory / Elective :  Elective
Department : Electrical and Electronics Engineering
Prerequisite : None
Education system : Face to face
Course Duration : 14 weeks – 3 hours per week
Faculty Member : Prof. Dr. İsmail H. ALTAŞ
Alternative Faculty Member : None
Language of Instruction : English
Internship :: None


 

Objectives of the Course

The students are subject to learn stability concepts in power systems including those of synchronous machine modeling, load-frequency control modeling of synchronous machines, excitation system types and their dynamic models, single machine dynamic models. multi-machine dynamic models, small-signal models and stability of synchronous machines, computer-based simulations of developed models, transient stability and stability margin enhancement.

 

Contents of the Course
The course covers the basic concepts of power system stability. Transients, dynamics, and steady-state stability concepts are covered. Nonlinearity of synchronous machine parameters is shown. Park's transformation and two-axis d-q modeling of synchronous machines is given. Besides the synchronous machine model, turbine, load, and excitation system models are also obtained and combined to yield a power system model. Different types of excitation systems are studied and modeled. IEEE type excitation systems are studied. Small-signal dynamic models are obtained and represented by block diagrams in conjunction with the dynamic models of stabilizer models. Therefore, the power system models are simulated with and without stabilizers. A direct solution method of transient stability is studied. A power system stability program combined with a power flow solution program is described and operated to show the results and importance of transient stability.

 


Learning Outcomes

Upon successful completion of the course, the students will be able to :
LO - 1 : Have sufficient knowledge on the operation of synchronous generators
LO - 2 : Have sufficient information on governor (prime) control of synchronous generators
LO - 3 : Have sufficient knowledge on excitation control of synchronous generators
LO - 4 : Develop small signal model of power systems
LO - 5 : Model, analyze and control single and multi-area power systems
LO - 6 :.Model and analyze voltage and stability issues in power systems
LO - 7 : Use equal area criterion to analyze power system stability (PSS)
LO - 8 : Analyze and control voltage and frequency oscillations in PSS


Teaching Plan

Week 1 Transient, sub-transient and steady state stability definitions in power systems
Week 2 Understanding governor and excitation control
Week 3 Modelling power system for governor control
Week 4 Developing controllers for governor control
Week 5 Modelling power system for excitation control
Week 6 Developing controllers for excitation control
Week 7 Modelling single machine infinite bus system
Week 8 Modelling multi machine systems
Week 9 Midterm exam
Week 10 Voltage and frequency control of single area power systems
Week 11 Voltage and frequency control of multi-area power systems
Week 12 Equal area criterion and its use for power system stability
Week 13 Simulation examples for power system stabilities
Week 14 Evaluating term projects
Week 15 Evaluating term projects
Week 16 Final exam

Text Book / Course Material

  1. Ismail H. Altas, unpublished lecture notes
  2. Ismail H. Altas, "Fuzzy Logic Control in Energy Systems with design applications in MATLAB/Simulink", The Institution of Engineering and Technology (The IET) Books, 2017.


Additional resources
 

  1. P.M. Anderson and A.A. Fouad, Power System Control and Stability, John Wiley & Sons, Inc, 2003.
  2. P. S. Kundur, Power System Stability and Control, McGraw-Hill Professional, 1994.
  3. E. W. Kimbark, Power System Stability, Wiley-IEEE, 1995.
  4. J. W. Bialek, J. Machowski, Power System Dynamics and Stability, John Wiley, 1997.
  5. P. W. Sauer, M. A. Pai, Power System Dynamics and Stability, Prentice Hall,1998.
  6. K. R. Padiyar, Power System Dynamics: Stability and Control, John Wiley, 1996.
  7. L. L. Grigsby, Power System Stability and Control, Taylor & Francis, 2007
  8. H. Saadat, Power System Analysis, McGraw Hill Book Company, 1999.


Evaluation Methods
 

Method Week Date Duration (Hour) Contribution (%)
Midterm 9   2 30
Preoject 1 5 - 11   12 20
Project 2 (as of final exam) 10-15   12 50
Total     26 100


Student Work Load and its Distribution

Type of work Duration (hours pw) Number of weeks
Lectures (face to face teaching) 3 14
extracurricular work 2 10
Preparation for the Midterm Exam 2 8
Midterm 2 1
Homework 0 0
Project 1 2 6
End of term exam (Project 2) 2 6
Other 1 2 1