...
the
following:
puX 0072.1
1
B 4000 MVA
puX
puX
7556.1
0100 .1
0
2
1
B
ase:
4000
MVA
eBook for You
Steps for Equivalent Network
10
REDUCED POWER SYSTEM
Steps
for
Equivalent
Network
5
Sh ... tie lines connected to the
external system and find the new short-circuit
le el
le
v
el
The chosen value for the equivalent machine
base is 4000 MVA. This will represent the
contribution ... The result is
equivalentcompletemachine
X
X
X
X
puX
pu
X
04389
0
02525.0
02518.0
2
1
Base: 100 MVA
pu
X
04389
.
0
0
eBook for You
Vietnamese Power System
21
REDUCED POWER SYSTEM
Vietnamese
...
... ANALYSIS
• To address the low voltage at buses 4, 5, 6, 8, 9,
10, 11 and 14, we placed a fixed shunt capacitor
of 115 MVAR at bus 10
• Why did we placed the shunts on the low
voltage side?
eBook ...
Reliability Test System
4
SYSTEM COMPONENTS
• Two areas (230kV &
138kV)
• 21 branches
•
10 generators (implicit
•
10 generators (implicit
GSU transformers)
• 20 loads
• 5 two-winding
transformers ... solution (ACCC) and
build the distribution factor data file
N-1 CONTINGENCY ANALYSIS
eBook for You
10
IEEE 24 – N-1 CONTINGENCY
ANALYSIS
eBook for You
AC Contingency Analysis Report
18
• Go to Power...
... to the value that will require a voltage
regulator output of (V
/10) to maintain the present
regulator
output
of
(V
RMAX
/10)
to
maintain
the
present
value of excitation voltage ... 1.0
T
E
= 0.46 V
RMIN
= -0.9
K
F
= 0.1
T
F
= 1.0
S
E
[E
1
]
=
033
S
E
[E
1
]
0
.
33
S
E
[E
2
] = 0 .10
eBook for You
DC Excitation Systems
13
TYPES OF EXCITERS
DC
Excitation
Systems
The saturation ... values E
1
and E
2
should
The
field
voltage
values
E
1
and
E
2
should
normally be chosen near the knee of the
exciter’s magnetization curve and near
the exciter ceiling
eBook for...
... plants) are
nuclear
and
hydro
plants)
are
represented
eBook for You
Hydraulic Turbine
10
TYPES OF GOVERNORS
Hydraulic
Turbine
Action (impulse-type) turbines
Pelton turbine
eBook...
... Generator Model
17
DYNAMIC FILE
(GENSAL)
CONs to be
inserted by
user
eBook for You
Generator Models
10
DYNAMIC FILE
Generator
Models
GENCLS: Classical generator model
GENROU: Round rotor generator ... You
Models Used for Dynamic File
42
DYNAMIC FILE
Models
Used
for
Dynamic
File
Generator at bus 100 (x3)
eBook for You
Models Used for Dynamic File
38
DYNAMIC FILE
Models
Used
for
Dynamic
... You
Models Used for Dynamic File
45
DYNAMIC FILE
Models
Used
for
Dynamic
File
Exciter at bus 100 (x3)
eBook for You
Round Rotor Generator (GENROU)
15
DYNAMIC FILE
Round
Rotor
Generator
...
... Frequency response plots
Linear impulse and step response
eBook for You
APPLICATION OF THE APPROACH
10
APPLICATION
OF
THE
APPROACH
Initial Conditions
Steady‐stateLoadFlow
OperatingScenarios
•
Peak...
... – 4100 ) after 100 ms
Sin
g
le-Line-to-Ground fault followin
g
b
y
a tri
p
of
g
gy p
line DI LINH – TAN DINH (4020 – 4100 ) after
100 ms (with and without auto-reclose)
TAN DINH ( 4100 )
TAN
... ( 4100 )
TAN
DINH
( 4100 )
Three-phase fault following by a trip of line DI
LINH
–
TAN DINH (4020
–
4100 ) after 100 ms
LINH
TAN
DINH
(4020
4100 )
after
100
ms
Single-Line-to-Ground ... (50902 – 59052)
after 100 ms
Single-Line-to-Ground fault following by a trip of
line NMDHTRHC21– MYTHO 2 C22 (50902 –
59052)
after 100 ms
(successful and
59052)
after
100
ms
(successful
...
... the
create
the
distribution
factor file
• Make sure to
choose the
right settings
• Select the
source and sink
subsystems
eBook for You
10
IEEE 24
–
QV
ANALYSIS
IEEE
24
–
QV
ANALYSIS
eBook ... frequency relays (loads and
t)
genera
t
ors
)
Prepare for transient simulation and
choose the following channels
choose
the
following
channels
Machine angles
Bus voltage
Bus
voltage
... voltage relays (loads and
t)
genera
t
ors
)
Prepare for transient simulation and
choose the following channels
choose
the
following
channels
Machine angles
Bus voltage
Bus
voltage
...
...
application
eBook for You
Operators
35
CONTROL FLOW TOOLS
Operators
Python assignment operators
a =10 and b=20
a =10
and
b=20
eBook for You
Lists
25
VARIABLES
Lists
Most versatile of Python’s compound...
... You
46
RESULTS DATA RETRIEVAL
RESULTS
DATA
RETRIEVAL
MODULE
eBook for You
Default Values
10
APPLICATION PROGRAM INTERFACE
Default
Values
_i: Default integer value
_f: Default real...
... a
volta
g
e below 0.9
p
u or above 1.1
p
u
gp p
eBook for You
Running the Load Flow Simulation
10
LOAD FLOW ANALYSIS
Running
the
Load
Flow
Simulation
• Run the
p
ower flow simulation
p
•...
...
Zsorce
4
CtttMVAld
4
.
C
onver
t
cons
t
an
t
MVA
l
oa
d
s:
• If active power is 100 %
constant current
,
then it
,
depends on V
• If reactive power is 100 %
t t d itt th
cons
t
an
t
a
d
m
itt
ance,
th
en
it ...
d
a
t
a o
f
thi
s
d
ynam
i
cs
fil
e
t
o
th
e a
l
rea
d
y
existing data
• So in this case, choose the dynamics data file
option
eBook for You
Running the system before any faults
29
RUNNING ...
cleared
•
Click on
OK
to trip
Click
on
OK
to
trip
the selected
branch
• Now, run the
simulation for 10
more seconds
eBook for You
Example 1
Test system information
6
INTRODUCTION TO THE TEST SYSTEM
Example
...
... Fault
Single
Phase
to
Ground
Fault
021
021
Z+Z+Z
E3
=I=I=I
0=I=I
0=V
CB
A
PhasetoPhaseFault
E
I
I
PhasetoPhasetoGroundFault
0
2
E
)
Z+Z
(
0=I
Z+Z
=
I
‐=
I
0
21
21
0
100 221
0
2
1
EZ‐
=
I
ZZ+ZZ+ZZ
)
(
=I
2
0
100 221
2
EZ‐
=I
ZZ+ZZ+ZZ
=
I
100 221
0
ZZ+ZZ+ZZ
eBook for You
ZERO SEQUENCE TRANSFORMER
15
CONNECTIONS
WARNINGNOTICE
0
0
H L
T
Yg Yg
HLPSSE
X
0
H‐N
N
X
0
L‐N
X0
T
N
D
T
Rg
3Rg
X0
T
‐
N
H ... Power
POWER SYSTEM STABILITY CALCULATION TRAINING
D5
FltAli
D
ay
5
-
F
au
lt
A
na
l
ys
i
s
July 10, 2013
Prepared by: Peter Anderson
eBook for You
ZERO SEQUENCE TRANSFORMER
13
CONNECTIONS
H L
A
A
B
B
ZO
B
B
SwitchesA&BinitiallyOPEN
ForGroundedWye ...
CONDITIONS
ThreePhaseFault
0
=
I
+
I
+
I
C
B
A
V
=
V
=
V
=
V
C
B
A
0
=
I
3
+
)
a
+
a
+
1
(
I
+
)
a
+
a
+
1
(
I
0=)I+Ia+aI(+)I+aI+Ia(+)I+I+I(
0
=
I
+
I
+
I
0
2
2
2
1
02
2
102 1
2
021
C
B
A
V=ZIa‐ZIa‐Ea=V
V=ZI‐ZI‐E=V
V
=
V
=
V
=
V
2
2
1
1
22
B
2211A
C
B
A
0=I,0=)a+a+1(Since
0
=
I
3
+
)
a
+
a
+
1
(
I
+
)
a
+
a
+
1
(
I
0
2
0
2
1
V3=0=V+V+V
V=ZIa‐ZIa‐aE=V
CBA
22
2
11C
2
2
1
1
B
0=V=V=V
CBA
2
2
3
3
0=I
0=V)a‐1(=ZI)1‐a(=)ZIa‐ZIa‐Ea(‐)ZI‐ZI‐E(=aV‐V
2
22
2
22
2
11
3
3
2211BA
eBook...