Lecture 10: Power

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Material to Review for Final
EE 340
Spring 2011
Y. Baghzouz
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Power definitions and their relationships
(P, Q, S, S, I, V, PF, Z)
Power factor correction by shunt
capacitors
Per-unit system including change of
base
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Transformers
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Measurement of series and shunt
impedances,
Equivalent circuit (r.p.s. or r.s.s)
Efficiency and voltage regulation
Load Tap Changing
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Transmission Line
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Series impedance, shunt admittance
Equivalent circuit (ABCD parameters)
Voltage and current relations
Voltage regulation and efficiency
Real and reactive power flow
Long line compensation (series & shunt)
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Synchronous Generators
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Equivalent circuit parameters
Synchronization with the grid
Control of active and reactive power
Voltage regulation
Efficiency
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Electric Load and Induction
Motors
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General load Model (ZIP model, P or Q =
aV2+bV+c)
Induction motor equivalent circuit
Power loss and efficiency
Torque characteristics
Relation of motor current and power
factor with load (or slip)
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Economic Dispatch
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Economic solution in lossless systems
with generator power limit constraints
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Power system represention
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Conversion of one-line diagram to
equivalent circuit
Per-unit conversion
Y-Bus Matrix
Injected currents and node voltages
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Power flow
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Given a power flow solution, determine
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System efficiency and power loss in various
components
MW and MVAR flow
Voltage regulation by LTC and shunt
capacitors
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Symmetrical Faults
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Subtransient, transient and steady-state
reactance, currents and voltages, time
constants, DC component.
Read Section 12. 1 including examples.
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Additional Info.
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Bring calculator, book, notes, old tests and
quizzes
The old tests & quizzes will be collected
after the exam!
The final will consist of 30-35 multiple
choice questions.
Good Luck!
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