U
I Getting PSCAD/EMTDC
ECE 404/504
Lecture 6
 Education Edition available in the Senior Design
and
d PC lab,
l b h
hopefully
f ll on VLAB ttoo.
» Version 4.2 and 4.5.1
 Also a free student edition (15 node limit)
» Version 4.5.1
» Only available for Windows Vista or later (not XP)
 Go to: http://www.pscad.com/
» Create account through “MyCentre”
» Follow installation instructions—including Fortran
compiler
1
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I PSCAD 4.2 versus 4.5.1
Spring 2013
ECE 404/504
Lecture 6
 Examples will be created using version 4.2
» Will run under 4.5.1
» Cases created using 4.5.1 can’t go back to
version 4.2
 May run into issues with 15 node limit in free
edition
 Try to learn from the examples that install
with the program
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Spring 2013
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Creating a file in
PSCAD/EMTDC vers 4.2
ECE 404/504
Lecture 6
 Create new project
 Set project as active
(blue icon)
 Double click on project
to open schematic
d
drawing
i pallet
ll t
» Can view an inactive
project by not run it
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U
I Adding components (1)
Spring 2013
ECE 404/504
Lecture 6
 A few basic
components in
bars on right of
screen
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Spring 2013
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U
I Adding components (2)
ECE 404/504
Lecture 6
 Can also add
components by
right clicking
mouse in
drawing area
» Add Component
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Adding Components (3)
Master Library
Spring 2013
ECE 404/504
Lecture 6
 Libraries for
different types of
components
» Select one to
expand it
» Copy the
component you
want to use
» Need to double
click on your
project
» Paste the
component
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Spring 2013
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Moving Up Modules
ECE 404/504
Lecture 6
 When yyou are
in a submodule
you can move
up with:
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Setting up your simulation
Spring 2013
ECE 404/504
Lecture 6
 Right
g click in
drawing area
» Select “Project
Settings”
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Spring 2013
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Project Settings
ECE 404/504
Lecture 6
 Usuallyy interested in
“Runtime”
» Duration
» Solution time step
» Channel plot step
 May want to save
channel to disk
Spring 2013
9
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Adding a Single Phase
Source
 Copy
py source
ECE 404/504
Lecture 6
1 0 [ohm]
1.0
from library
» Double-click
for dialog box
 Several
pulldown
menus
» First
configuration
10
Spring 2013
5
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Source Configuration
ECE 404/504
Lecture 6
 Enter source name
 Source impedance
» For example ideal
– Circuit symbol changes when
done
 Can also specify
» Grounding
» AC/DC
» Input internal or external
– External allows user interactive
or control loop
R=0
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U
I Other data entry points
Spring 2013
ECE 404/504
Lecture 6
 Signal parameters
» RMS magnitude
» Ramp-up time
– Remember no steadystate solution
» Initial phase (sine wave)
» Frequency
 Impedance fields won’t
allow entry for ideal
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Spring 2013
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Resistors, Capacitors,
Inductors
ECE 404/504
Lecture 6
 For single phase branches can get from
menus in
i window
i d
or master
t lib
library
» Need to get from master library for
polyphase
» Have option of 3 phase view of single line
diagram view in later versions of program
 Enter R in ohms, L in H and C in F
Spring 2013
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Switches and Faults
»
»
»
»
Need the fault “switch” itself
And the fault timing control
And need a signal node
Signal name matches input name for
fault (default is “Fault”)
Fault )
 Similar for a breaker
Fault
F
 Copy from Master Library
 For
F example,
l for
f a fault
f lt
ECE 404/504
Lecture 6
Timed
Fault
Logic
SignalName
» Need three parts
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Spring 2013
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Faults
Fault
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I
ECE 404/504
Lecture 6
 Configuration:
» Fault name (control input)
– Must match signal_name
» Clearing and chopping are
for switches
 Main data
» On and Off resistance
(same for switches—open
close)
Spring 2013
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Faults
Fault
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ECE 404/504
Lecture 6
 Internal Output
» Can request current
output (can reduce
node count)
 Signal name:
SignalName
» Set to match fault
control input
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Spring 2013
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ECE 404/504
Lecture 6
Fault Timed Logic
 Set start time and
d ti off fault
duration
f lt
 Attach signal name to
end of line on icon:
» Set to match fault
control input
Timed
Fault
Logic
Fault
Spring 2013
17
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Breakers
BRK
ECE 404/504
Lecture 6
 Configuration
» Breaker name is again
control input
 Can specify interrupting
current
» Current chopping limit
 Preinsertion resistance
» Current limiting R
 Symbol type
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Spring 2013
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Breakers
BRK
ECE 404/504
Lecture 6
 Main Data
» Open/Closed
resistance
 Preinsertion
Spring 2013
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Breakers
ECE 404/504
Lecture 6
 Output data
» Current measure
– Name appears on circuit
symbol
BRK
IS1
20
Spring 2013
10
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Breaker Timing Logic
 Controls timing of
BRK
ECE 404/504
Lecture 6
Timed
Breaker
Logic
Closed@t0
switching
it hi
» Again need signal input to
match breaker control
 Timingg control
» Number operations
» Initial state
» Timing of operations
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Transformer Models
Spring 2013
ECE 404/504
Lecture 6
 Several Options
» One
O will
ill b
be shown
h
 Main dialog box
» Per unit leakage
reactance
» No load losses from
open circuit test
» Copper losses from rated
current through winding
resistances
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Spring 2013
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Winding voltages
ECE 404/504
Lecture 6
 Note that three phase
transformer uses RMS
L-L voltages for ratio
and to convert per unit
values to ohms and mH
 Additional menu options
p
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Connecting circuit together
Spring 2013
ECE 404/504
Lecture 6
 Wire icon on top toolbar
» Pencil symbol appears
» Trace with left mouse clicks
– Click each time change direction
» Right click or escape to complete
– Right click lets you select points to rescale
 “Junction”
Junction to connect wires as cross each
other (otherwise disconnected
» Get from right click in drawing space
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Spring 2013
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Voltage and Current
measurements
ECE 404/504
Lecture 6
 Voltage measurements
» Can do line to ground and arbitrary
V
Vs
Ea
– Need to connect to circuit
– Name the measurement (default is Ea)
 Current measurement
» Need to connect to the line
line, don’t
don t
copy on top of a wire.
Spring 2013
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Ia
Output Channels
ECE 404/504
Lecture 6
 Create output channel next
» Again need signal
Vs
» Connect to “Output channel”
 Choose Input/Output
IFault
Vs
IFault
Reference
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Spring 2013
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Input/Output Reference
Graphs
ECE 404/504
Lecture 6
 Several Options
» Add Overlay Graph Most
Common
» If choose “Add as Curve”
» Paste to existing graph
Main : Graphs
2.00
Vs
1.50
– Right
g click in white p
part
1.00
y (kV)
0.50
0.00
-0.50
-1.00
-1.50
-2.00
0.000
0.010
0.020
0.030
0.040
0.050
0.070
0.080
0.090
0.100
Spring 2013
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0.060
Input/Output Reference:
Meters
ECE 404/504
Lecture 6
 Add as Meter
 Then select put a control
panel in your drawing
(from right side tool bars or
right click of mouse)
: Co...
» Right click - Paste
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Spring 2013
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ECE 404/504
Lecture 6
Complete Circuit
Main : Graphs
Vs
30
20
0.149 [ohm]
10
0.00473[H]
Fault
Fault
Timed
Fault
Logic
y (kV)
R=0
Vs
0
-10
-20
-30
Vs
0.000
Vs
0.010
0.020
0.030
0.040
0.050
0.060
0.070
0.080
0.090
0.100
0.060
0.070
0.080
0.090
0.100
Main : Graphs
IFault
IFault
IFault
15.0
Main ...
Vs
10.0
5.0
y (kA)
0.0
6.38536e-010
-5.0
-10.0
-15.0
-20.0
-25.0
-30.0
0.000
0.010
0.020
0.030
0.040
0.050
Spring 2013
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Complete Circuit:
without graphs shown
Vs
0.149 [ohm]
ECE 404/504
Lecture 6
0.00473[H]
R=
=0
U
I
Vs
IFault
Fault
Fault
Timed
Fault
Logic
Main ...
Vs
V
Vs
IFault
6.38536e-010
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Spring 2013
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Power Electronic Circuits
ECE 404/504
Lecture 6
 Start with the master
library
 Can build a converter
from switches
 Or use a completed
modules
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Power Electronic Devices
Spring 2013
ECE 404/504
Lecture 6
 Symbols for several
devices
 Transistor, IGBT and
GTO all very similar
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Spring 2013
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Switch dialogs
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ECE 404/504
Lecture 6
Spring 2013
ECE 404/504
Lecture 6
Switching controls
 Interpolated switching
» Adjusts if switching instance falls between
time steps
» Allows larger time steps
» Also interpolated controls to improve
accuracy
y
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Spring 2013
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ECE 404/504
Lecture 6
Switching controls
 Interpolated switching
H
» Adjusts if switching
instance falls between
time steps
» Allows larger time steps
» Also interpolated
p
controls
to improve accuracy
H
OFF
L
L
H
ON
L
Interpolated firing
pulse generator
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Switching controls
Spring 2013
ECE 404/504
Lecture 6
» One for thyristor and
one for
f controlled
t ll d
turn off devices
H
H
OFF
L
L
H
ON
L
Interpolated firing
pulse generator
36
Spring 2013
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Simple firing control
ECE 404/504
Lecture 6
D + 0.4
Duty Ratio
1.0
D + -
Tria_off
F
Tria_on
37
F
H
OFF
L
H
ON
L
Spring 2013
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