Phần 22 KHÓA ĐÀO TẠO TÍNH TOÁN ỔN ĐỊNH VÀ ỨNG DỤNG TRÊN PHẦN MỀM PSSE CHO KỸ SƯ HỆ THỐNG ĐIỆN (Mô phỏng các sự kiện ổn định trên Phần mềm PSSE)

TRANSMISSION &
DISTRIBUTION
A Division of Global Power
POWER SYSTEM STABILITY CALCULATION TRAINING
D10
12
Si l ti f D i E t
D
ays
10
-
12
-
Si
mu
l
a
ti
on o
f

D
ynam
i
c
E
ven
t
s
December 2, 2013Prepared by: Mohamed El Chehaly
eBook for You

OUTLINE
2
OUTLINE
• Scenario 1
• Scenario 2
• Scenario 3
•
Scenario 4
•
Scenario

4
• Scenario 5
• Scenario 6
• Scenario 7
eBook for You
3
SCENARIO 1:
FAULTS
AT DI
-
SCENARIO

1:

FAULTS
AT

DI
-

LINH & TAN DINH
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Slider Diagram
4
SCENARIO 1
Slider

Diagram
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Load Flow
5
SCENARIO 1
Load

Flow
 N-0:

Line DI LINH
TAN DINH (4020
4100)

Line

DI

LINH

–
TAN

DINH

(4020

–
4100)
 878 MVA (53.1%)

Low voltages at TAN DINH but above limits

Low

voltages

at

TAN

DINH

but

above

limits

N
-
1:


N
-
1:

 System collapse
 One of the most severe contin
g
encies
g
 Special protection scheme is employed
eBook for You
Special Protection Scheme
6
SCENARIO 1
Special

Protection

Scheme
 If the voltage at PHU LAM 500 (4400) is
less than 400 kV (0 8
pu
) for 0 5 seconds
less

than

400

kV

(0
.
8

pu
)

for

0
.
5

seconds

 PLAM_T5 (bus 43678, load 43 MW)

PLAM T6 (bus 43688 load 42 MW)

PLAM
_
T6

(bus

43688
,
load

42

MW)

 Trip 2 auto-transformers at LONG AN 2
 If
t
h
e
v
o
l
tage

at
PH
U
LAM
500

(
44
00)
i
s

t e o tage at U 500 ( 00) s
less than 430 kV (0.86 pu) for 5 seconds
 PLAM_T5 (bus 43678, load 43 MW)
 PLAM_T6 (bus 43688, load 42 MW)

 Trip 2 auto-transformers at LONG AN 2
eBook for You
Faults
7
SCENARIO 1
Faults
 DI LINH (4020)

Three
phase fault following by a trip of line DI

Three
-
phase

fault

following

by

a

trip

of

line

DI

LINH – TAN DINH (4020 – 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

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 fault following by a trip of
line DI LINH – TAN DINH (4020 – 4100) after 100
ms (with and without auto-reclose)
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8
SCENARIO 2: FAULTS AT
SCENARIO

2:

FAULTS

AT

PLEIKU & DI-LINH
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Slider Diagram
9
SCENARIO 2
Slider

Diagram
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Load Flow
10
SCENARIO 2
Load

Flow
 N-0:

Line PLEIKU
DI LINH (3300
4020)

Line

PLEIKU

–
DI

LINH

(3300

–
4020)
 835 MVA (46.8%)
 N-1:

System collapse

System

collapse

 One of the most severe contingencies
 S
p
ecial
p
rotection scheme is em
p
lo
y
ed
pp py
eBook for You
Special Protection Scheme
11
SCENARIO 2
Special

Protection

Scheme
 If the voltage at PHU LAM 500 (4400) is
less than 400 kV (0 8
pu
) for 0 5 seconds
less

than

400

kV

(0
.
8

pu
)

for

0
.
5

seconds

 PLAM_T5 (bus 43678, load 43 MW)


PLAM T6 (bus 43688 load 42 MW)

PLAM
_
T6

(bus

43688
,
load

42

MW)

 Trip 2 auto-transformers at LONG AN 2
 If
t
h
e
v
o
l
tage

at
PH
U
LAM

500

(
44
00)
i
s

t e o tage at U 500 ( 00) s
less than 430 kV (0.86 pu) for 5 seconds
 PLAM_T5 (bus 43678, load 43 MW)
 PLAM_T6 (bus 43688, load 42 MW)
 Trip 2 auto-transformers at LONG AN 2
eBook for You
Faults
12
SCENARIO 2
Faults
 PLEIKU (3300)

Three
phase fault following by a trip of line

Three
-
phase

fault

following

by

a

trip

of

line

PLEIKU – DI LINH (3300 – 4020) after 100 ms
 Sin
g
le-Line-to-Ground fault followin
g
b
y
a tri
p
of
g
gy p
line PLEIKU – DI LINH (3300 – 4020) after 100 ms
(successful and unsuccessful auto-reclose)

DI LINH (4020)

DI

LINH

(4020)
 Three-phase fault following by a trip of line
PLEIKU
–
DI LINH (3300
–
4020) after 100 ms
PLEIKU

DI

LINH

(3300

4020)

after

100

ms
 Single-Line-to-Ground fault following by a trip of
line PLEIKU – DI LINH (3300 – 4020) after 100 ms
(successful and unsuccessful auto-reclose)
eBook for You
13
SCENARIO 3: FAULTS AT PHU

SCENARIO

3:

FAULTS

AT

PHU

LAM & DAK NONG
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Slider Diagram
14
SCENARIO 3
Slider

Diagram
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Load Flow
15
SCENARIO 3
Load

Flow
 N-0:

Line PHU LAM
DAK NONG (4400
3500)


Line

PHU

LAM

–
DAK

NONG

(4400

–
3500)
 856 MVA (48.5%)

Low voltages at PHU LAM but above limits

Low

voltages

at

PHU

LAM

but

above

limits

N
-
1:

N
-
1:

 System collapse
 One of the most severe contin
g
encies
g
 Special protection scheme is employed
eBook for You
Special Protection Scheme
16
SCENARIO 3
Special

Protection

Scheme
 This fault will cause instant trip of the

following loads
following

loads

 PLAM_T5 (bus 43678, load 43 MW)

PLAM T6 (bus 43688 load 42 MW)

PLAM
_
T6

(bus

43688
,
load

42

MW)

 Trip 2 auto-transformers at LONG AN 2
eBook for You
Faults
17
SCENARIO 3
Faults
 PHU LAM (4400)


Three
phase fault following by a trip of line PHU

Three
-
phase

fault

following

by

a

trip

of

line

PHU

LAM – DAK NONG (4400 – 3500) after 100 ms
 Sin
g
le-Line-to-Ground fault followin
g
b

y
a tri
p
of
g
gy p
line PHU LAM – DAK NONG (4400 – 3500) after
100 ms (successful and unsuccessful auto-
reclose)
reclose)
 DAK NONG (3500)

Three
-
phase fault following by a trip of line PHU

Three
-
phase

fault

following

by

a

trip

of

line

PHU

LAM – DAK NONG (4400 – 3500) after 100 ms
 Single-Line-to-Ground fault following by a trip of
line PHU LAM
–
DAK NONG (4400
–
3500) after
100 ms (successful and unsuccessful auto-
reclose)
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18
SCENARIO 4: FAULTS AT O
SCENARIO

4:

FAULTS

AT

O

MON & NHABE
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Slider Diagram
19
SCENARIO 4
Slider

Diagram
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Load Flow
20
SCENARIO 4
Load

Flow
 N-0:

Line O MON
NHABE (4750
4450)

Line

O

MON

–
NHABE

(4750

–
4450)
 418 MVA (20.2%)

Low voltages at O MON below limits

Low

voltages

at

O

MON

below

limits

N
-
1:

N
-
1:

 Voltages at O MON below 0.90 pu
 Contin

g
enc
y
that can lead to load tri
pp
in
g
in the
gy ppg
area
eBook for You
Faults
21
SCENARIO 4
Faults
 O MON (4750)

Three
phase fault following by a trip of line O MON

Three
-
phase

fault

following

by

a

trip

of

line

O

MON

– NHABE (4750 – 4450) after 100 ms
 Sin
g
le-Line-to-Ground fault followin
g
b
y
a tri
p
of
g
gy p
line O MON – NHABE (4750 – 4450) after 100 ms
(successful and unsuccessful auto-reclose)

NHABE (4750)

NHABE

(4750)
 Three-phase fault following by a trip of line O MON
–
NHABE (4750
–
4450)
after 100 ms
NHABE

(4750

4450)
after

100

ms
 Single-Line-to-Ground fault following by a trip of
line O MON – NHABE (4750 – 4450) after 100 ms
(successful and unsuccessful auto-reclose)
eBook for You
22
SCENARIO 5: TRIPPING OF
SCENARIO

5:

TRIPPING

OF

LARGEST GENERATOR IN
SOUTH
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Slider Diagram
23
SCENARIO 5
Slider

Diagram
PHU MY 1 S4
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Load Flow
24
SCENARIO 5
Load

Flow
 N-0:

PMY 1 S4 (bus 52040 ID 1)

PMY
_
1
_
S4

(bus

52040
,
ID

1)
 Swing bus for the reduced system

P
GEN
=
360 MW (86% of MBASE)

P
GEN

360

MW

(86%

of

MBASE)
 3.2% of total generation in the region
 N-1:
 With correct re-dis
p
atch of the

g
eneration
,
no bi
g

pg,g
issues should be found
eBook for You
Faults
25
SCENARIO 5
Faults
 PMY_1_S4 (52040)

Three
phase fault at PMY 1 S4 (52040) following

Three
-
phase

fault

at

PMY
_
1
_

S4

(52040)

following

by a trip of the generator after 100 ms
 Sin
g
le-Line-to-Ground fault PMY 1 S4
(
52040
)

g
__
()
following by a trip of the generator after 100 ms
(successful and unsuccessful auto-reclose)
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