EE 589A Final Exam—Scope The final exam will cover Chapters 2–9. The scope of this exam includes: • Chapter 2: Fundamentals – Real power, reactive power, complex power, apparent power – Power factor (lagging or leading) – Power factor correction – Relationship between line-to-neutral (phase) and line-to-line voltages in Y or ∆ connection – Relationship between phase and line currents in Y or ∆ connection • Chapter 3: Power Transformers – Ideal transformer – Per unit system – Per unit impedance conversion from one base to another – Drawing per unit circuit • Chapter 4: Transmission Line Parameters – Basics about four transmission line parameters • Chapter 5: Transmission Lines: Steady-State Operation – Short, medium-length, and long line models – What determines loadability of short, medium-length, and long line? • Chapter 6: Power Flows – Bus admittance matrix – Solving power flow equations – Types of buses in power flow problem – Jacobian matrix of power flow equations – Assumptions in DC power flow calculation • Chapter 7: Symmetrical Faults – Assumptions for fault analysis 1 • Chapter 8: Symmetrical Components – Definition of symmetrical components – Transformation between phase and sequence voltages (currents) – Sequence network of impedance loads (Y or ∆ connected) – Sequence network of rotating machines – Per-unit sequence models of three-phase two-winding transformers • Chapter 9: Unsymmetrical Faults – Zero-, positive-, and negative-sequence networks – Thévenin equivalents as viewed from a bus – Interconnected sequence networks for different types of faults – Fault current calculation under unsymmetrical faults There will be 10 multiple choice questions (20 points, covering Chapters 2–9) and 3 problems: one on Chapters 2–3 (per unit circuit), one on Chapter 6 (determine bus admittance matrix and solve AC power flow), and one on Chapters 8–9 (unsymmetrical fault calculation based on symmetrical components and sequence networks). 2
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