Phần 11 KHÓA ĐÀO TẠO TÍNH TOÁN ỔN ĐỊNH VÀ ỨNG DỤNG TRÊN PHẦN MỀM PSSE CHO KỸ SƯ HỆ THỐNG ĐIỆN (Mô phỏng và tính toán hệ thống điện Việt Nam trên Phần mềm PSSE)

TRANSMISSION &
DISTRIBUTION
A Division of Global Power
POWER SYSTEM STABILITY CALCULATION TRAINING
Day 4
-
Overview of the Vietnamese Power System
Day

4

-
Overview

of

the

Vietnamese

Power

System
November 21, 2012Prepared by: Frida Ceja-Gomez
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2
OUTLINE
OifthVit P St
•
O
verv

i
ew o
f

th
e
Vi
e
t
namese
P
ower
S
ys
t
em
• Load Flow Anal
y
sis
y
• N-1 Contingency Analysis
• Short-Circuit Analysis
PV & QV A l i
•
PV

&

QV

A
na
l
ys
i
s
eBook for You
3
THE VIETNAMESE POWER
THE

VIETNAMESE

POWER

SYSTEM
Overview of the Vietnamese Power System
&
Load Flow Analysis
Load

Flow

Analysis
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Saved Case File and Slider File
4
THE VIETNAMESE POWER SYSTEM
Saved

Case

File

and

Slider

File
Today’s exercises will require the following
•
Today’s

exercises

will

require

the

following

files:
September_2013_max.sav
500 kV sld
500

kV
.

sld
• The slider file only represents the 500kV
tiit
t
ransm
i
ss
i
on sys
t
em
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The Vietnamese Power System
5
THE VIETNAMESE POWER SYSTEM
The

Vietnamese

Power

System
• High voltage
transmission at
transmission

at

500kV and 220kV
•

Medium voltage
•
Medium

voltage

transmission at
110kV
• Divided in 3 regions:
• North
• Central
Sth
•
S
ou
th
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Region Totals
North
6
THE VIETNAMESE POWER SYSTEM
Region

Totals
-
North
• Generate a zone based
report including all the zones
belonging to the North
belonging

to

the

North

region
•
What can be said of this
•
What

can

be

said

of

this

region?
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Region Totals
South
7
THE VIETNAMESE POWER SYSTEM
Region

Totals
-
South
• Generate a zone based report including all the
zones belonging to the South region
• How is this region different from the North
region?
eBook for You
Region Totals
Central
8
THE VIETNAMESE POWER SYSTEM
Region

Totals
-
Central
• Generate a zone based report including all the
zones belonging to the South region
• How does this region compare to the other
two?
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Links to Other Countries
9
THE VIETNAMESE POWER SYSTEM
Links

to

Other

Countries
• Generate an inter-area flow re
p
ort for the links
p
with China, Laos and Cambodia
•
Is power imported from or exported to these
Is

power

imported

from

or

exported

to

these

countries?
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Running the Load Flow Simulation
10

LOAD FLOW ANALYSIS
Running

the

Load

Flow

Simulation
• Run the
p
ower flow simulation
p
• Verify the Progress window. Are there any problems?
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Single Line Diagram
11
LOAD FLOW ANALYSIS
Single

Line

Diagram
• Does the dia
g
ram ran
g
e checkin
g

fla
g
an
y

p
roblems?
gg ggyp
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Limit Checking Reports
12
LOAD FLOW ANALYSIS
Limit

Checking

Reports
•
V
erif
y
if there are an
y
branch overloads
yy
• At what voltage level are the overloads more severe?
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Pl i R li bilit C it i
13
N-1 CONTINGENCY ANALYSIS

Pl
ann
i
ng
R
e
li
a
bilit
y
C
r
it
er
i
a
• The table below shows the current voltage
reliability criteria used in Vietnam
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Limit Checking Reports
14
LOAD FLOW ANALYSIS
Limit

Checking

Reports
•
V
erif

y
if there are an
y
volta
g
e violations at the 500kV
yyg
level
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Limit Checking Reports
15
LOAD FLOW ANALYSIS
Limit

Checking

Reports
•
V
erif
y
if there are an
y
volta
g
e violations at the 220kV
yyg
level
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Limit Checking Reports

16
LOAD FLOW ANALYSIS
Limit

Checking

Reports
•
V
erif
y
if there are an
y
volta
g
e violations at the 110kV
yyg
level
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17
IEEE 24
–
N
-
1 CONTINGENCY
IEEE

24

–

N
-
1

CONTINGENCY

ANALYSIS
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18
N-1 CONTINGENCY ANALYSIS
Preparing the input files for the DFAX file
• Create a subsystem file as shown below
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19
N-1 CONTINGENCY ANALYSIS
Preparing the input files for the DFAX file
• Create a monitoring file
• overloads on all branches
• the buses for each subsystem having a
volta
g
e below 0.9
p
u or above 1.1
p
u
gp p
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20
N-1 CONTINGENCY ANALYSIS

Preparing the input files for the DFAX file
• Finally, write a contingency file to trip each of
the branches in the high voltage transmission
t
sys
t
em
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21
N-1 CONTINGENCY ANALYSIS
Creating the DFAX file
• Go to AC contingency solution (ACCC) and build
the distribution factor data file
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Creating the DFAX file
22
N-1 CONTINGENCY ANALYSIS
Creating

the

DFAX

file
• Verify the output bar for any problems with the
distribution factor file
distribution

factor

file
• Note that several contingencies create islands
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23
N-1 CONTINGENCY ANALYSIS
AC Contingency Solution
• Name the contin
g
enc
y
solution out
p
ut file and
gy p
solve
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AC C ti S l ti
24
N-1 CONTINGENCY ANALYSIS
AC

C
on
ti
ngency
S
o
l
u
ti

on
•
V
erif
y
if the
p
ower flow solution conver
g
ed for all
yp g
contingencies
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AC Contingency
25
N-1 CONTINGENCY ANALYSIS
AC

Contingency

Analysis Reports
• Go to Power Flow,
Reports, AC
Contingency
Contingency

reports to generate
a report of the non-
converged cases
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