EE 458 Electrical Distribution Systems

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EE 458Electrical Distribution Systems
Books Sallam, A. A., Electric Distribution
Systems (IEEE Press Series on Power
Engineering), Wiley-IEEE Press, First Edition,
2011.   Gönen, T., Electric Power Distribution
System Engineering, CRC Press, Second Edition,
2011.   Fehr, R. E., Industrial Power
Distribution, Prentice-Hall, Inc.,
2002.   Beaty, W., Electric Power Distribution
Systems A Nontechnical Guide, Penn Well Pub.
Company, 1998
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Basics

• Power Instantaneous consumption of energy
• Power Units
• Watts voltage x current for dc (W)
• kW 1 x 103 Watt
• MW 1 x 106 Watt
• GW 1 x 109 Watt

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Basics

• Energy Amount of Work
• Energy Units (for electrical power)
• Wh -- 1 x 100 Watthour
• kWh 1 x 103 Watthour
• MWh 1 x 106 Watthour
• GWh 1 x 109 Watthour
• Relationship of power and energy

Energy Consumed
Average Power
Duration
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Circular rotation of a magnetized rotor in
Synchronous Generator produces sinusoidal
voltage in stator windings due to FARADAY LAW.
(Look at EE 471 Notes)
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How do you write the mathematical equation for
this periodic function?
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Period 0.01 s. Frequency 100 Hz.
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Period 0.02 s. Frequency 50 Hz.
OR
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Attention
Rectangular
Polar
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Phasors are complex numbers used to represent
sinusoids.

• Phasor representation of a sinusoidal function

Phasor
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Consider the derivative of sinusoidal signal
represented as a phasor

• Derivative

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Examples
Inductor
Capacitor
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