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EE 361 Electrical Power Systems Final Exam Coverage

Dr. Ali Mehrizi-Sani mehrizi@eecs.wsu.edu

School of Electrical Engineering and Computer Science

December 11, 2015

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Final Exam Coverage

All Material Covered – Closed book; calculator allowed.

– A double-sided letter-sized equation single-sheet is allowed. You are free to write anything you deem helpful for the exam.

– The equation sheet MUST be handed in with the exam WITH those equations used circled, otherwise your paper will be graded out of 80.

Textbook (Chapman) – Chapters 2 to 11.

Course Notes – Read the course notes. (Re-)watch lectures if needed.

Homeworks 1-11 – All solutions are posted on the course website.

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Chapter 2: Three-Phase Circuits (midterm 1)

Real, reactive, apparent, and complex power in single- and three-phase circuits

Wye and Delta connection of circuits

Three-phase circuit analysis

Relationship between line and phase quantities

Phasor diagrams

One-line diagram <-> Three-phase circuit

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Chapter 3: Transformers (midterms 1 and 2)

Midterm 1: Sections 3.1 to .8

Midterm 2: Sections 3.9 to 3.12

Efficiency

Voltage regulation

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Chapter 5: Synchronous Machines (midterm 3)

Sections 5.1 to 5.14 with emphasis on 5.9

Both synchronous generators and motors

Equivalent circuit

Phasor diagram

Power and torque calculations

Mechanical speed vs. electrical frequency

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Chapter 6: Parallel Operation of SG (midterm 3)

Sections 6.1 to 6.5

Frequency-power droop characteristics – P = s (fnl – fsys)

Voltage-reactive power droop characteristics

Droop characteristic for the infinite bus

Multimachine operation

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Chapter 7: Induction Motors (midterm 3)

Sections 7.1 to 7.5 and 7.8 to 7.11

Nominal speed calculations

Equivalent model and tests

Maximum torque

Torque and power calculation

Efficiency calculations

Slip calculation

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Chapter 8: DC Motors

Sections 8.1, 8.3-8.8, 8.10-8-14

Separately excited, shunt, compound machines

Equivalent model and tests

Power, torque, and Ea calculations: Eb = k Φ n

Efficiency calculations

Terminal characteristics

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Chapter 9: Transmission Lines

Sections 9.1-9.10

Short, medium, and long line models

ABCD parameters

R, L, and C of the line

Bundling

V, I, and S calculations

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Chapter 10: Power System Representation

Sections 10.1-10.5

Per unit representation and conversion between different systems

Ybus calculations

Nodal equations

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Chapter 11: Power Flow Studies

Sections 11.1-11.3

Voltage update equation

Reactive power calculation

Bus types (SL, PV, PQ)

Iterative solution method

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Practice Probems

All book’s examples and end of chapter problems… .

Chapter 8: 5, 8, 10, 12, 14, 15, 17-19

Chapter 9: 4, 5, 7, 8, 11, 14, 16, 17

Chapter 10: 2, 5, 7

Chapter 11: (forming the equations is sufficient for this course) 5, 9

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Questions later? – Email: mehrizi@eecs.wsu.edu