phần 5 khóa đào tạo tính toán ổn định và ứng dụng trên phần mềm psse cho kỹ sư hệ thống điện thực hiện tính toán mô phỏng trên phần mềm psse với hệ thống điện 24 nút của ieee
... and 24,
we added a fixed shunt capacitor of 75 MVAR at
bus 3
LOAD FLOW ANALYSIS
• To address the low voltage at buses 4, 5, 6, 8, 9,
10, 11 and 14, we placed a fixed shunt capacitor
of 1 15 ... the shunts on the low
voltage side?
eBook for You
22
IEEE 24 – SHORT-CIRCUIT
ANALYSIS
eBook for You
Negative and Zero Sequence Parameters
24
• Negative-sequence impedance is equal to positive-
sequence ... ANALYSIS
• Match the events in the progress window to the plot
eBook for You
39
IEEE 24 – DYNAMIC ANALYSIS
eBook for You
The IEEE 1996
Reliability Test System
4
SYSTEM COMPONENTS
• Two areas (230kV...
...
for
operating
flexibility
eBook for You
DC Exciters 3
50
EXCITER MODELS IN PSS®E
DC
Exciters
3
IEEET4, IEEEX4, IEEET5, IEET5A and
DC3A
Rtldtitilth
R
epresen
t
very o
ld
sys
t
ems, ... ESDC2A
Sample data
K
300
E
3 05
K
A
=
300
E
1
=
3
.
05
T
A
= 0.01 E
2
= 2.29
T
B
= 0 K
E
= 1.0
B
E
T
C
= 0 V
RMAX
= 4. 95
T
E
= 1.33 V
RMIN
= -4.9
K
F
= 0.1
T
F
= 0.6 75
S
E
[E
1
]
=
0 279
S
E
[E
1
]
... nowadays
Widely
used
nowadays
eBook for You
DC Exciters 1
45
EXCITER MODELS IN PSS®E
DC
Exciters
1
IEEET1, IEET1A, IEEEX1 and ESDC1A
Sample data
K
46
E
31
K
A
=
46
E
1
=
3
.
1
...
... PROCEDURE
Performance
Verification
Transient response to a step change
[IEEE4 21.2-1990]
eBook for You
Dynamic Simulation Control Flags
25
DYNAMIC SIMULATION SEQUENCE
Dynamic
Simulation
Control
Flags
MODE
MODE
... instant b
y
lo
g
ic outside
pyyg
the dynamic simulation
eBook for You
Data Space Allocation
15
CLASSIFICATION OF VARIABLES
Data
Space
Allocation
Th PSS®E di f th l t l
Th
e
PSS®E
... Excitation system open-circuit test
3: Governor test
4: Extended term dynamic simulation
5: Dynamics data is present but an initialization
activity has been successfully run
activity
...
... PSS®E
Steam
Turbine
Models
TGOV1
TGOV1
Typical parameters:
R = 0. 05 pu
T
1
= 0 .50 s
T
2
/T
3
= 0.3
T
5t 9
T
3
=
5
t
o
9
s
eBook for You
Introduction
4
TYPES OF GOVERNORS
Introduction
... TGOV3
Modification of IEEEG1 and PTI recommended
Modification
of
IEEEG1
and
PTI
recommended
model for fast valving studies
Same definitions used for IEEEG1 can be used
P
RMAX
has ... Gas Turbine Models
50
GOVERNOR MODELS IN PSS®E
Gas
Turbine
Models
GAST
Typical parameters
Typical
parameters
...
...
for
Dynamic
File
Governor at bus 201
eBook for You
IEEE T
yp
e 1 S
p
eed-Governin
g
Model
25
DYNAMIC FILE
yp p
g
(IEEEG1)
IEEE recommended general model for
steam turbine and can ...
File
Generator at bus 201
eBook for You
Governor Models
24
DYNAMIC FILE
Governor
Models
General model (IEEEG1)
General
model
(IEEEG1)
Gas turbine (GAST)
Gas
turbine
(GAST)
Steam ... You
3
DYNAMIC FILE
eBook for You
Generator Re
p
resentation in Power
31
DYNAMIC FILE
p
Flow
5
The
Var
limits must reflect:
5
.
The
Var
limits
must
reflect:
a. The effective admittance of the controlled...
... Modes
28
SMALL-SIGNAL STABILITY
Nature
of
Modes
Inter-area/global modes
Natural frequency: 0.1 – 0 .5 Hz
Generators of one system swing against
t f th t k ti
genera
t
ors o
f
ano
th
er sys
t
em ...
rotor speed deviation weighted by the
generator size
generator
size
eBook for You
Launch NEVA
35
NEVA – PSS NETOMAC
Launch
NEVA
From PSS®E, load a saved case and
difil
d
ynam
i
c
fil
e
Launch ... Mode
32
SMALL-SIGNAL STABILITY
Dominant
Mode
Very significant mode
eBook for You
Modal Analysis
5
SMALL-SIGNAL STABILITY
Modal
Analysis
eBook for You
Calculation of
Eigenvalue
37
NEVA – PSS...
... Single-Line-to-Ground fault following by a trip of
line NMDHTRHC21– MYTHO 2 C22 (50 902 –
59 052 )
after 100 ms
(successful and
59 052 )
after
100
ms
(successful
and
unsuccessful auto-reclose)
eBook ... (4400
–
350 0) after
100 ms (successful and unsuccessful auto-
reclose)
eBook for You
Load Flow
24
SCENARIO 5
Load
Flow
N-0:
PMY 1 S4 (bus 52 040 ID 1)
PMY
_
1
_
S4
(bus
52 040
,
ID
... found
eBook for You
Load Flow
15
SCENARIO 3
Load
Flow
N-0:
Line PHU LAM
DAK NONG (4400
350 0)
Line
PHU
LAM
–
DAK
NONG
(4400
–
350 0)
856 MVA (48 .5% )
Low voltages at PHU LAM...
... Study
–
IEEE 24 Bus Test System
Day
12
-
Case
Study
–
IEEE
24
Bus
Test
System
PART 1
July 19, 2013Prepared by: Frida Ceja-Gomez
eBook for You
42
IEEE 24
–
N
-
1 CONTINGENCY
IEEE
24
... 3
IEEE 24
–
SAVED CASE
IEEE
24
–
SAVED
CASE
BUILD-UP
eBook for You
38
LOAD FLOW ANALYSIS
Correcting the voltage issues
• To address the low voltage at buses 4, 5, 6, 8, 9,
10, ... for You
Branch Data
7
SAVED CASE BUILD-UP
Branch
Data
• The transmission line data for the IEEE 24- bus system can be found in
the table below
eBook for You
47
N-1 CONTINGENCY ANALYSIS
Creating...
... Pinit (400MW)
• Therefore, change Vmax to 1pu
• Bus 22
• Mbase= 775MVA
• Pmax= Vmax*Mbase= 0. 85* 7 75= 658 . 75 MW < Pinit (660MW)
• Therefore, change Vmax to 1pu
eBook for You
Governor Data
16
BUILDING ... You
Generator V
Curves
30
DYNAMICS DATA VERIFICATION
Generator
V
-
Curves
eBook for You
3
IEEE 24
–
BUILDING A
IEEE
24
–
BUILDING
A
DYNAMICS DATA FILE
eBook for You
Dynamics Data File Verification
18
DYNAMICS ... DATA VERIFICATION
Dynamics
Data
File
Verification
•
Prepare the IEEE24 saved case file (the
Prepare
the
IEEE
24
saved
case
file
(the
one satisfying N-0 reliability conditions)...
... to
choose the
right settings
• Select the
source and sink
subsystems
eBook for You
10
IEEE 24
–
QV
ANALYSIS
IEEE
24
–
QV
ANALYSIS
eBook for You
Long
Term Voltage Stability
24
IEEE24 – ... Turbine and Boiler TGOV5
17
IEEE 24 – LONG TERM STABILITY
Steam
Turbine
and
Boiler
TGOV5
Typical data for TGOV5
eBook for You
Small Signal Stability using NEVA
31
IEEE 24 – SMALL SIGNAL ... You
Long
Term Voltage Stability
25
IEEE24 – LONG TERM STABILITY
Long
-
Term
Voltage
Stability
eBook for You
Undervolta
g
e Load Sheddin
g
Models
19
IEEE 24 – LONG TERM STABILITY
gg
(LVSH)
...
... str1[0] # Prints first character of the string
H
d
th
>>>print str1[2 :5] # Prints characters starting from 3
r
d
to 5
th
llo
>>>print str1[2:] # Prints string starting from 3
rd
character ...
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 ... can be used to span the
t i lti l li
s
t
r
i
ng across mu
lti
p
l
e
li
nes
eBook for You
Loops
50
CONTROL FLOW TOOLS
Loops
For loop statements
Examples
Examples
eBook for You
Operators
32
CONTROL...
... Global Power
POWER SYSTEM STABILITY CALCULATION TRAINING
D14
15
A t ti i P th
D
ay
14
-
15
-
A
u
t
oma
ti
on us
i
ng
P
y
th
on
December 5, 2013Prepared by: Mohamed El Chehaly
eBook for You
Dynamic ... You
29
SUBSYSTEM DEFINITION
SUBSYSTEM
DEFINITION
eBook for You
Introduction to PSS®E Automation
5
INTRODUCTION
Introduction
to
PSS®E
Automation
Python
programs
:
Python
programs
:
... You
PURG
22
POWER FLOW OPERATION
PURG
Use this API to delete an equipment
eBook for You
Data Retrieval
45
SINGLE ELEMENT AND SUBSYSTEM DATA RETRIEVAL
Data
Retrieval
Type of retrieved data:
Return...
... 4000 MVA
puX
puX
755 6.1
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 t
iitll
5
.
Sh
or
t
-c
i
rcu
it
... sequence impedances
111
The result is
equivalentcompletemachine
X
X
X
X
puX
pu
X
04389
0
0 252 5.0
0 251 8.0
2
1
Base: 100 MVA
pu
X
04389
.
0
0
eBook for You
Vietnamese Power System
21
REDUCED ...
for
Equivalent
Network
5. Short-circuit levels
3. Verify that the error difference between the
original and the new short-circuit levels does not
exceed 5%
exceed
5%
4. In the original system,...
... for the
50 0kV Buses
(Flat pre-fault
diti )
con
diti
ons
)
eBook for You
28
N-1 CONTINGENCY ANALYSIS
Contingencies causing non-convergence
• For the loss of line from Bus 52 002 to Bus 52 062
,
... in
MVA (Misc options menu)
MVA
(Misc
,
options
menu)
eBook for You
Limit Checking Reports
15
LOAD FLOW ANALYSIS
Limit
Checking
Reports
•
V
erif
y
if there are an
y
volta
g
e violations ...
bus
bus
acceptable?
Iit
•
I
s
it
necessary to
split the bus?
eBook for You
AC Contingency
25
N-1 CONTINGENCY ANALYSIS
AC
Contingency
Analysis Reports
• Go to Power Flow,
Reports, AC...
... requ
i
re
d
t
o per
f
orm
t
o
d
ay
’
s
exercise are the following:
• Day5_savnw.sav
• Day5_savnw.sld
D5 d
•
D
ay
5
_savnw.
d
yr
eBook for You
Example 1
Inter
area flow report
8
INTRODUCTION ... cannot be used for
steady state power flow
analysis
eBook for You
Viewing the recorded channels
35
PLOTTING THE OUTPUTS
Viewing
the
recorded
channels
• Go to the Plot Tree View, double-click ... system
•
23
bus
system
• System divided in 3 areas:
• FLAPCO
• LIGHTCO
• WORLD
• Voltage levels: 50 0kV, 230kV, 21.6kV, 20kV, 18kV, and 13.8kV
•
No motors present
•
No
motors
present
• Generators,...