# 程序代写案例-EE 589A

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
– 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
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• 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).
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