EE455 Introduction to
Energy Distribution
Systems
Colin Christy
1111 Coover Hall
colin@iastate.edu
Anatomy of a Distribution
System
This is basic, but relates some good
basics before we go deeper:
http:/www.youtube.com/watch?v=TQg2Y0kp2
More distribution
EE455 Introduction to Energy
Distribution Systems
Colin Christy
1111 Coover Hall
colin@iastate.edu
Anatomy of a Distribution System
This is basic, but relates some good basics
before we go deeper:
http:/www.youtube.com/watch?v=TQg2Y0kp
2vI
More distrib
EE455 - Test 2 Topics
Chapter 6
1) Generalized matrices and equations for a distribution line
a. How developed?
2) Voltage Line to Line from line to neutral
3) Voltage unbalance
4) Load current, for balanced or unbalanced
5) Power per phase and total powe
Syllabus: EE455 Power System Analysis I
Catalog description:
E E 455. Introduction to Energy Distribution Systems.
(3-0) Cr. 3. F. Prereq: E E 303, credit or registration in E E 324
Overhead and underground distribution system descriptions and characteris
Distribution System Line Model
OK, so you know how to calculate the series impedance
and the shunt admittance for a distribution line.
We will use these in the model above to calculate actual
(not approximate) voltages and currents in the system.
Distribu
Chapter 2: Nature of Loads
Load is constantly
changing.
There (actually) is no
steady-state.
Calculate:
(from AMI, notice 15 min. incr.)
1) maximum demand
2) Average demand
3) Energy usage (total kWh)
4) Load factor
(from AMI, notice 15 min. incr.)
Sum th
Capacitance of OH and UG
distribution lines
Now well find the capacitance of the line.
To do that, we need Gausss law.
ow use this result to find potential differences. Remember
at C=Q/V:
Generalize this equation for multiple line charges:
Where Vij is th
Series Z of Overhead Lines
1)
2)
3)
Resistance from table of
conductor data. (appendix A)
Self inductance analysis of
magnetic field
Mutual inductance analysis of
magnetic field
Consider a set of long transmission line conductors:
Consider a set of long t
Series Impedance
Underground
Parallel
To Do
Go to www.milsoft.com and request the
student version of the Windmil software.
You will need this for an upcoming
assignment.
Week of
January
12
19
26
February
2
9
16
23
March 2
9
16
23
30
April 6
13
20
27
Monda