PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
(Important Changes Since PCFLO Version 3.7: Linear and Nonlinear Components of Load and Generation at a Bus
are Now Specified Entirely Separately, as Highlighted in Bold Type. Also, Nonlinear DPF is now in pu instead of %)
BUS DATA
(File = BDAT, one record per bus. May use CSV/TSV format if preferred)
Variable
Columns Format
Comments
Number
1-4
I4
Name
5 - 16
A12
Type
17
I1
1 = Swing Bus
2 = PV Bus
3 = PQ Bus
Linear P Generation
18 - 25
F8
Percent
Linear Q Generation
26 - 33
F8
Percent
Linear P Load
34 - 41
F8
Percent
Linear Q Load
41 - 49
F8
Percent
Desired Voltage
50 - 57
F8
Percent
Shunt Reactive Q Load
58 - 65
F8
Percent @ Voltage = 100%
Maximum Q Generation
66 - 73
F8
Percent
Minimum Q Generation
74 - 81
F8
Percent
Page 1
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
Control Area
82 - 83
I2
Remote-Controlled Bus Number
84 - 87
I4
Used for controlling voltage at a remote bus. For these
cases, the desired voltage specified above applies to the
remote bus.
Connection Type for Shunt Reactive Q Load
88 - 89
I2
0 or 1 = Grounded Wye.
Otherwise, ungrounded wye or delta (i.e. no zero
sequence path)
Subtransient R, X (Pos. Sequence)
90 - 97
98 - 105
F8
F8
Series impedance of motor or generator, in percent
Subtransient R, X (Neg. Sequence)
106 - 113
114 - 121
F8
F8
Series impedance of motor or generator, in percent
Subtransient R, X (Zero Sequence)
122 - 129
130 - 137
F8
F8
Series impedance of motor or generator, in percent
(ignoring connection type and grounding impedances)
(do not multiply by 3)
Connection Type for Subtransient Impedances 138 - 139
I2
0 or 1 = Grounded Wye.
Otherwise, ungrounded wye or delta (i.e. no zero
sequence path)
Grounding Impedance R, X for SubTransient Impedances
140 - 147
148 - 155
F8
F8
Series impedance from wye point to ground, in percent.
(do not multiply by 3).
Nonlinear Device P Generation
156 - 163
F8
P Generation that comes from the nonlinear device,
in percent.
Nonlinear Device P Load
164 - 171
F8
P Load of the nonlinear device,
in percent.
Page 2
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
Nonlinear Device Displacement Power Factor 172 - 179
F8
Per Unit (positive for lagging is positive, negative for
leading).
Nonlinear Device Type
I4
1
2
3
4
5
6
7
8
9
180 - 183
=
=
=
=
=
=
=
=
=
2-pulse current source
2-pulse voltage source
6-pulse current source
6-pulse voltage source
12-pulse current source
12-pulse voltage source
18-pulse current source
18-pulse voltage source
Diversified 6-pulse current source (like
type 3, but with the 11 & 13th harmonics
multiplied by 0.75, the 17 & 19th harmonics
by 0.50, and all higher harmonics by 0.25)
Single-phase electronic GY-GY
Single-phase electronic Delta-GY
Magnetic fluorescent GY-GY
Magnetic fluorescent Delta-GY
User-specified type 14
10 =
11 =
12 =
13 =
14 =
...
...
...
33 = User-specified type 33
Nonlinear Device Phase Shift
184 - 191
F8
Degrees for positive sequence, on system side with
respect to device side. This is the additional phase shift
by which the current injection phase angles will be
advanced for positive sequence, and delayed for
negative sequence.
Connection Type for Harmonics Model
of Linear Load
192 - 193
I2
0 or 1 = Grounded Wye. Otherwise, ungrounded wye
or delta (i.e. no zero sequence path)
Page 3
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
CSV/TSV Header and Structure for Bus Data File BDAT
A
1
:Bus Data
:
:
:
:Bus
:Number
:(I)
I
9
Shunt
Reactive
Q Load
(%)
(F)
Q
17
Negative
Sequence
Subtransient
R
(%)
(F)
B
2
Bus
Name
(A)
C
3
Linear
P
Generation
(%)
(F)
Bus
Type
(I)
J
10
Maximum
Q
Generation
(%)
(F)
R
18
Negative
Sequence
Subtransient
X
(%)
(F)
D
4
K
11
Minimum
Q
Generation
(%)
(F)
S
19
Zero
Sequence
Subtransient
R
(%)
(F)
E
5
Linear
Q
Generation
(%)
(F)
L
12
Bus
Control
Area
(I)
M
13
RemoteControlled
Bus No.
(I)
T
20
Zero
Sequence
Subtransient
X
(%)
(F)
U
21
Connection
Type for
Subtransient
R and X
(I)
Page 4
F
6
Linear
P
Load
(%)
(F)
G
7
Linear
Q
Load
(%)
(F)
N
14
H
8
Desired
Voltage
(%)
(F)
O
15
Connection
Type for
Shunt
Reactive
Q Load
(I)
Positive
Sequence
Subtransient
R
(%)
(F)
V
22
Grounding
Impedance
R for
Subtransient
Impedances
(%)
(F)
W
23
Grounding
Impedance
X for
Subtransient
Impedances
(%)
(F)
P
16
Positive
Sequence
Subtransient
X
(%)
(F)
X
24
Nonlinear
Device
P
Gen
(%)
(F)
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
Y
25
Nonlinear
Device
P
Load
(%)
(F)
Z
26
Nonlinear
Device
Displacement
Power Factor
(%)
(F)
AA
27
Nonlinear
Device
Type
(I)
AB
28
Nonlinear
Device
Phase Shift
(Degrees)
(F)
AC
29
Linear
Load
Connection
Type
(I)
Format: (I) Integer, (F) Floating point, including E±00, (L) Logical, (A) Character
Note: The header lines must begin with a colon so that they will be properly treated as comments.
Any line beginning with a colon is treated as a comment.
Page 5
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
LINE AND TRANSFORMER DATA
(File = LDAT, one record per branch. May use CSV/TSV format if preferred)
Variable
Columns Format
Comments
FROM BUS Number
1-4
I4
TO BUS Number
5-8
I4
Circuit Number
9 - 10
I2
R, X (Positive/Negative Sequence)
11 - 22
23 - 34
F12
F12
Series impedance, in percent
Charging (Positive/Negative Sequence)
35 - 46
F12
Percent, for entire length of line
Rating
47 - 54
F8
Percent
Minimum Tap, or Minimum Phase Shift Angle 55 - 61
F7
Per unit tap, or degrees, FROM BUS side
wrt. TO BUS side
Maximum Tap, or Maximum Phase Shift Angle 62 - 68
F7
Per unit tap, or degrees, on FROM BUS side
wrt. TO BUS side
Tap Step Size, or Phase Shift Step Size
69 - 75
F7
Per unit, or degrees
Tap
76 - 82
F7
Per unit, on FROM BUS side
Phase Shift
83 - 90
F8
Degrees, FROM BUS side wrt. TO BUS side
Voltage-Controlled Bus Number
91 - 95
I5
Used for controlling voltage at a remote bus. For these
cases, the desired voltage specified applies to the
remote bus.
Page 6
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
Voltage-Controlled Bus Side
96 - 97
I2
When controlling the voltage at a remote bus, enter 1
when the remote bus is on the FROM BUS side of the
transformer. Enter 2 when the remote bus is on the
TO BUS side of the transformer.
Desired Voltage for Voltage-Controlled Bus,
or Desired Active Power Flow for Phase
Shifting Transformer
98 - 105
F8
Percent Voltage, or Percent Active Power (FROM BUS
toward TO BUS)
R, X (Zero Sequence)
106 - 117
118 - 129
F12
F12
Series impedance, in percent (ignoring connection type
and grounding impedances), (do not multiply by 3)
Charging (Zero Sequence)
130 - 141
F12
Percent, for entire length of line
Connection Type for Transformers and
Shunt Elements
142 - 143
I2
For transformers:
Type
FROM BUS
0 or 1
GY
2
GY
3
Y
4
Y
5

6
GY
7
Y
8

9

TO BUS
GY
Y
GY
Y



GY
Y
For shunt elements:
0 or 1 = Grounded Wye.
Otherwise, ungrounded wye or delta (i.e. no zero
sequence path)
Page 7
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
Grounding Impedance R, X
144 - 155
156 - 167
F12
F12
Series impedance from wye point to ground, in percent
Applies to wye-connected transformers and shunt
elements. (do not multiply by 3)
Resistive Skin Effect Factor for
Positive/Negative Sequence
168 - 175
F8
Harmonic h (h > 2, fractional values OK) at which
the conductor resistance is double the fundamental
frequency resistance.
Resistive Skin Effect Factor for
Zero Sequence
176 - 183
F8
Harmonic h (h > 2, fractional values OK) at which
the conductor resistance is double the fundamental
frequency resistance. This value applies to the
combined conductor and grounding resistance.
Page 8
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
CSV/TSV Header and File Structure for Line and Transformer Data File LDAT
A
B
1
2
:Line and Transformer Data
:
:
:From
To
:Bus
Bus
:(I)
(I)
I
9
Max.
Tap (pu), or
Max. Phase
Angle (Deg.)
(F)
Q
17
Zero
Sequence
X
(%)
(F)
C
3
Circuit
Number
(I)
J
10
Tap
Step Size (pu)
or Phase Shift
Step Size
(Deg.)
(F)
R
18
Zero
Sequence
Charging
(%)
(F)
D
4
Positive
Sequence
R
(%)
(F)
K
11
Fixed
Tap
(pu)
(F)
S
19
Connect.
Type
for Trans.
and Shunt
Elements
(I)
E
5
Positive
Sequence
X
(%)
(F)
L
12
M
13
VoltageCont.
Bus
Number
(I)
Phase
Shift
(Deg.)
(F)
T
20
Grounding
R
(%)
(F)
U
21
Grounding
X
(%)
(F)
F
6
Pos/Neg
Sequence
Charging
(%)
(F)
N
14
VoltageCont.
Bus
Side
(I)
V
22
Pos/Neg
Resistive
Skin
Effect
Factor
(F)
G
7
Page 9
Min.
Tap (pu), or
Min. Phase
Angle (Deg.)
(F)
Rating
(%)
(F)
O
15
Desired Volt. at
V-Cont. Bus (%)
or Desired P
in Phase Shifter
FROM-TO (%)
(F)
W
23
Zero
Resistive
Skin
Effect
Factor
(F)
Format: (I) Integer, (F) Floating point, including E±00, (L) Logical, (A) Character
Note: The header lines must begin with a colon so that they will be properly treated as comments.
Any line beginning with a colon is treated as a comment.
H
8
P
16
Zero
Sequence
R
(%)
(F)
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
AREA INTERCHANGE DATA
(File = ADAT, one record per loadflow area. May use CSV/TSV format if preferred)
Variable
Number
Columns Format
Comments
1-2
I2
3
I1
Control Bus Number
4-7
I4
Desired Export Power
21 - 28
F8
Percent
Solution Tolerance for Export
30 - 35
F6
Percent
Name
37 - 56
A20
Tie-Line Loss Assignment
Page 10
If non-zero, then power losses on tie lines are assigned
equally between the two areas. If zero, the TO BUS
area for each tie line is assigned the loss (i.e., meter at
the FROM BUS).
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
CSV/TSV Header and File Structure for Area Interchange Data File ADAT
A
B
1
2
:Area Interchange Data
:
Tie Line
:
Loss
:
Assignment
:
(1 for
:
Splitting,
:
0 for To
:Area
Bus
:Number
Ownership
:(I)
(I)
C
3
Control
Bus
Number
(I)
D
4
Desired
Export
Power
(%)
(F)
E
5
Solution
Tolerance
for Export
(%)
(F)
F
6
Area
Name
(A)
Format: (I) Integer, (F) Floating point, including E±00, (L) Logical, (A) Character
Note: The header lines must begin with a colon so that they will be properly treated as comments.
Any line beginning with a colon is treated as a comment.
Page 11
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
USER-SPECIFIED HARMONIC CURRENT SPECTRAL DATA
(File = SPECTRA, one record per harmonic per nonlinear load type. May use CSV/TSV format if preferred)
Variable
Columns Format
Comments
Type of Series
1-3
A3
Must be sin for a sine series, cos for a cosine series.
All entries in this file must be either sin, or cos, and
cannot be mixed.
Nonlinear Load Type
5-9
I5
Must be 14, 15, 16, . . . , 33.
Harmonic Order
10 - 14
I5
1, 2, 3, etc.
Current Harmonic Magnitude
15 - 24
F10
Percent. If the fundamental is given, its magnitude
must be 100.0, and the other harmonic magnitudes for
the same nonlinear load type are assumed to be relative
to 100.0. The actual injection currents will be scaled
according to bus load/generation.
If the fundamental is not given for a nonlinear load
type, then the harmonic magnitudes are assumed to be
given on the system base.
Current Harmonic Phase Angle
25 - 34
F10
Degrees, using load current convention. If the
fundamental angle is given, it must be 0.0. The actual
phase angles will be adjusted internally according to
bus power factor and fundamental voltage angle.
If the fundamental is not given, the phase angles are
assumed to be given with respect to the bus
fundamental frequency voltage phase angle.
Page 12
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
CSV/TSV Header and File Structure for Spectra Data File SPECTRA
A
B
1
2
:Harmonic Current Spectral Data
:
:Type of
:Series
Nonlinear
:(SIN or
Load
:COS)
Type
:(A)
(I)
C
3
Harmonic
Order
(Integer)
(I)
D
4
Current
Harmonic
Mag.
(%)
(F)
E
5
Current
Harmonic
Phase
Angle
(Degrees)
(F)
Format: (I) Integer, (F) Floating point, including E±00, (L) Logical, (A) Character
Note: The header lines must begin with a colon so that they will be properly treated as comments.
Any line beginning with a colon is treated as a comment.
Page 13
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
SOLUTION OPTIONS
(File = OPTIONS. Must use CSV/TSV format.)
For Loadflow and Motor Starting (sample file OPTIONS.LF shown below)
A
B
C
D
1
2
3
4
One Line Case Title Goes Here
:Loadflow and Motor Starting Solution Options
:
:Optimal
P,Q
Accel.
:Bus
Mismatch
Factor
:Ordering
Gauss- for Gauss- for Gauss:Method
Seidel
Seidel
Seidel
:(Integer)
Start?
Start
Start
:(1-2-3)
(T or F)
(0.5 pu)
(1.2 pu)
(I)
(L)
(F)
(F)
E
5
Voltage
Update
Cap
for GaussSeidel
Start
(0.005 pu)
(F)
K
11
L
12
M
13
N
14
O
15
Limit
Output
to This
Control
Area?
(I)
and
This
Control
Area?
(I)
and
This
Control
Area?
(I)
and
This
Control
Area?
(I)
and
This
Control
Area?
(I)
F
6
P,Q
Mismatch
Solution
Tolerance
(5E-06 pu)
(F)
G
7
H
8
Disable
Remote
Disable
Volt. Reg.
Area
by PV
Intrchnge
Busses? P Adjust?
(T or F)
(T or F)
(L)
(L)
I
9
J
10
Disable
Transf.
Ignore
Tap
Q Limits Adjust. for
on PV
Voltage
Busses? Control?
(T or F)
(T or F)
(L)
(L)
Format: (I) Integer, (F) Floating point, including E±00, (L) Logical, (A) Character
Note: The first line of these option files should be the case title. Additional header lines, prior to the actual data,
must begin with colons. Any line beginning with a colon is treated as a comment.
Page 14
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
For Short Circuit (sample file OPTIONS.SC shown below)
A
B
1
2
One Line Case Title Goes Here
:Short Circuit Solution Options
:Optimal
:Bus
:Ordering
:Method
Enter T for Diagonal and Neighbor ZBUS Elements Only (recommended)
:(Integer)
Enter F for All ZBUS Elements (not recommended and not to be followed by FAULTS)
:(1-2-3)
(T or F)
(I)
(L)
For Full Harmonics Study (sample file OPTIONS.HS shown below)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
One Line Case Title Goes Here
:Full Harmonic Solution Options
:
:
Harmonic Load Model
:Optimal
P,Q
Accel.
Update
Highest for PQ Linear Loads
:Bus
Mismatch
Factor
Cap
P,Q
Harmonic 0 or 1: Resistive-only (recommended)
:Ordering
Gauss- for Gauss- for Gauss- for Gauss- Mismatch
of
2: Parallel R,L Model
:Method
Seidel
Seidel
Seidel
Seidel
Solution
Interest 3: Series R,L Model
:(Integer)
Start?
Start
Start
Start
Tolerance (Integer) 4: Ignore PQ Loads (i.e., No Model)
:(1-2-3)
(T or F)
(0.5 pu)
(1.2 pu) (0.005 pu) (5E-06 pu) (1 - 49)
(0 - 4)
(I)
(L)
(F)
(F)
(F)
(F)
(I)
(I)
Format: (I) Integer, (F) Floating point, including E±00, (L) Logical, (A) Character
Note: The first line of these option files should be the case title. Additional header lines, prior to the actual data,
must begin with colons. Any line beginning with a colon is treated as a comment.
Page 15
R
17
Global
Resistance
Doubling
Harmonic
(0,2,3,4 …)
(I)
PCFLO Version 5.2, 500 Bus, Windows 95. http://www.ece.utexas.edu/~grady/, July 28, 1998.
For Harmonic Impedance Scan (sample file OPTIONS.HZ shown below)
A
B
C
D
1
2
3
4
One Line Case Title Goes Here
:Harmonic Impedance Scan
:
:Optimal
P,Q
Accel.
:Bus
Mismatch
Factor
:Ordering
Gauss- for Gauss- for Gauss:Method
Seidel
Seidel
Seidel
:(Integer)
Start?
Start
Start
:(1-2-3)
(T or F)
(0.5 pu)
(1.2 pu)
(I)
(L)
(F)
(F)
L
12
Scan
This
Bus *
(I)
M
13
and
This
Bus
(I)
N
14
and
This
Bus
(I)
O
15
and
This
Bus
(I)
E
5
F
6
G
7
H
8
I
9
J
10
K
11
Update
Cap
for GaussSeidel
Start
(0.005 pu)
(F)
P,Q
Mismatch
Solution
Tolerance
(5E-06 pu)
(F)
Lowest
Harmonic
of
Interest
(Integer)
(1 - 49)
(I)
Highest
Harmonic
of
Interest
(Integer)
(1 - 49)
(I)
Number
of Steps
per
Harmonic
(Integer)
(1 - 100)
(I)
Phase
Sequence
0: Zero
1: Pos.
2: Neg.
(0, 1, 2)
(I)
Limit the
Output to
Diagonal
Elements
Only?
(T or F)
(L)
P
16
and
This
Bus
(I)
Q
17
Harmonic Load Model
for PQ Linear Loads
0 or 1: Resistive-only (recommended)
2: Parallel R,L Model
3: Series R,L Model
4: Ignore PQ Loads (i.e., No Model)
(0 - 4)
(I)
R
17
Global
Resistance
Doubling
Harmonic
(0,2,3,4 …)
(I)
Format: (I) Integer, (F) Floating point, including E±00, (L) Logical, (A) Character
Note: The first line of these option files should be the case title. Additional header lines, prior to the actual data,
must begin with colons. Any line beginning with a colon is treated as a comment.
* Note: A negative number in any of the “Scan This Bus” columns will invoke a scan of all system busses.
Page 16