báo cáo thực tập tại trạm biến áp 500kv hà tĩnh
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Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
A-giíi thiÖu chung.
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%&'()*+,-./+012
34-5678--9-:-;3+-<=+1
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$-@A9'B$+%-C$<D%E-
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1
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
B - báo cáo nội dung thực tập.
I- Vai trò, nhiệm vụ của trạm biến áp 500kV Hà Tĩnh trong hệ
thống điện.
1. Vai trò :
78--9f-:-;3+-<
-91()*+,*FFF8-%+-g;3+-<-9%4
-Af+12)%12+6X-32-Y%A4
-]2++2),
2. Nhiệm vụ:
F4%C@+3J
! $-@A9'B$+%-C
$<BCDJ Y -Y=+'heY-4-D
V/44-Ah 8-fV/h- Y V
/=+4-AhiA7@3N-Y-94-A
UY-V-N-=+4-A,
# (V4N3A4##^$
-U3Q#bX-A%&-##%1I
&%&CD7N4-]4-A-32-Y63N4
93%)2-3,
R (V4N##3A4!!^$
-U3Q?bX3N4934-38-5
,
II - Liên hệ của trạm với các công trình điện lực khác của hệ
thống .
-7.4%&-E47
B?'6R'##%R'!!J
1'>!%>?A%&-1
*M,
1'P%P#A%&-*9j3+,
1'#>#%#>ZA%&-##
1-A-5*4Q,
1'#>?A%&-##1I&-5
j3Y(E,
1'!>#A%&-!!e+7834e+78-5
E,
1'!>?A%&-!!W-/0E,
1'!>ZA%&-!!d á34[\Q
-5,
III - Các thiết bị chính của trạm.
1- Sơ đồ nối điện chính của trạm.
2
Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
2- M¸y biÕn ¸p lùc:
2.1 - M¸y biÕn ¸p tù ngÉu 500kV(AT2):
W-VR!+
*043JAMH500.
e@3N-+/JSđm = 150000/150000/50000 kVA.
14+/J 500/√3 ± 8 x 1,25/225/√3 /35 ,
VN3J Y
0TN
/∆-11.
14)klJ eJ!#,"Zl,
eJRP,Pl,
J!>,!l,
m&2354J 500/√3 ± 8 x 1,25 kV.
2.2 - M¸y biÕn ¸p tù ngÉu 220kV (AT4):
*043JOBF225
e@3N-+/JSđm = 125000/125000/45000 kVA.
14+/J 225 ± 8x1,25/115/23 ± 2.2,5%,
VN3J Y
0TN
/∆-11.
14)klJ eJ!#,l,
eJ?l,
J#?l,
m&2354J 225 ± 8x1,25,
3
Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
3 - M¸y c¾t ®iÖn:
e-@AD=+)-@nC--
74-.-9Y&J
eN4
500kV 220kV 110kV
MHMe-
4Y
FX-32D FXT-14F
3AP1-
245
S1-
145F
1
U
đm
500 500 220 245 145 kV
U
max
550 550 245 145 kV
I
đm
2000 2000 2000 1250 3150 A
I
cắt đm
40 40 40 31,5 31,5 kA
I
n đm
100 100 100 80 kA
t
In
3 3 3 3 3 s
C
tụ/pha
1200 pF
R
đóng trước
600 432/pha
Ω
P khí nén định
mức
18 37 bar
P dừng máy nén 18 37 bar
P khởi động máy
nén
17,6 35,5 bar
P khí nén khóa
mạch TĐL
17 bar
P khí nén mở
mạch TĐL
17,4 bar
P khí nén khóa
mạch đóng
15,5 25 bar
P khí nén mở
mạch đóng
15,9 bar
P khí nén khóa
mạch cắt
15 21,5 bar
P khí nén đóng
mạch cắt
15,4 bar
P SF6đm 6 7,65 7,5 6 6,8 bar
P khí SF6 báo tín
hiệu
5,6 7,2 6,2 5,2 5,8 bar
P khí SF6 khóa
mạch thao tác
5,5 7,1 6,0 5,0 5,5 bar
P ban đầu trong
bình N
2
170
4
W9Le
e7o
Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
4 - M¸y biÕn dßng:
THÔNG SỐ MÁY BIẾN DÒNG .
T
T
Vị
trí
*0
43
Hảng sản
xuất
Tỷ số biến
GA38%-p@A@n
C
C1 C2 C3 C4 C5
1 571 CTH-550 ALSTOM
600-800-1000-
1200/1
1200
/1
1200
/1
1200
/1
1200
/1
1200
/1
2 572
OSKF-
1800
Trench
Elec
600-1200/1
1200
/1
1200
/1
1200
/1
600/
1
1200
/1
3 573 CTH-550 MAGRINI
600-800-1000-
1200/1
1200
/1
1200
/1
1200
/1
600/
1
1200
/1
4 574 CTH-550 ALSTOM
600-1200-
2000/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
5 580 CTH-550 ALSTOM
600-1200-
2000/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
6 581 CTH-550 ALSTOM
600-1200-
2000/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
7 582 CTH-550 ALSTOM
600-1200-
2000/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
8
580-
7
CTH-550 ALSTOM
600-1200-
2000/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
9
582-
7
CTH-550 ALSTOM
600-1200-
2000/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
10 200 QDR-245 ALSTOM
600-800-
1200/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
11 232 QDR-245 ALSTOM
600-800-
1200/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
12 234 QDR-245 ALSTOM
400-600-800-
1200/1
800/1
400/
1
600/
1
1200
/1
1200
/1
13 272 QDR-245 ALSTOM
600-800-
1200/1
1200/
1
1200
/1
600/
1
1200
/1
1200
/1
14 274 QDR-245 ALSTOM
600-800-
1200/1
1200/
1
1200
/1
600/
1
1200
/1
1200
/1
15 276 IOSK245 Trench
1200-800-600-
400/1
1200/
1
1200
/1
1200
/1
1200
/1
1200
/1
16 100
QDR-
123/2
ALSTOM
400-800-
1200/1
1200/
1
1200
/1
1200
/1
1200
/1
17 134
QDR-
123/2
ALSTOM
400-800-
1200/1
800/1
800/
1
800/
1
1200
/1
18 172
QDR-
123/2
ALSTOM
400-800-
1200/1
800/1
800/
1
800/
1
800/
1
19 174
QDR-
123/2
ALSTOM
400-800-
1200/1
800/1
800/
1
800/
1
800/
1
20 176
QDR-
123/2
ALSTOM
400-800-
1200/1
800/1
800/
1
800/
1
800/
1
5
Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
21 342 QDR-72/2 ALSTOM 50-100/1 100/1
100/
1
22 341
GSWF45
W
MAGRINI 400/1 400/1
e@3N--SN+/%ND=+qJ
eq=+N4 ## !!
e38N9 ( 1W ( 1W ( 1W
e@3N--SN+/
^Qb
? R R R R R
eND i# , i# , i# ,
5 - M¸y biÕn ®iÖn ¸p:
th«ng sè m¸y biÕn ®iÖn ¸p
T
T
Vị trí Loại
Hãng sản
xuất
U
đm
kV
Tỉ số biến
Tổ đấu
dây
1 TU571 CPTf500/5 MAGRINI 500
500.000/√3/110/√3
Y/Y
2 TU574 CPTf500/5 MAGRINI 500
500.000/√3/110/√3
Y/Y
3 TU 5AT2 CCV525 ALSTOM 500
500.000/√3/110/√3
Y/Y
4 TU580-7 CCV525 ALSTOM 500
500.000/√3/110/√3
Y/Y
5 TU580-6 CCV525 ALSTOM 500
500.000/√3/110/√3
1 fa
6 TU582-7 CCV525 ALSTOM 500
500.000/√3/110/√3
Y/Y
7 TU582-4 CCV525 ALSTOM 500
500.000/√3/110/√3
1 fa
8 TU C22 CCV245 ALSTOM 225
225.000/√3/110/√3 Y/∆hở
9 TU C29 CCV245 ALSTOM 225
225.000/√3/110/√3
1 fa
10 TU272 CCV245 ALSTOM 225
225.000/√3/110/√3 Y/∆hở
11 TU274 CCV245 ALSTOM 225
225.000/√3/110/√3 Y/∆hở
12 TU276 TEVP SIMEN 242
225.000/√3/110/√3 Y/Y/∆hở
13 TU C12 CCV123 ALSTOM 110
123.000/√3/110/√3 Y/∆hở
14 TU C19 CCV123 ALSTOM 110
123.000/√3/110/√3
1 fa
15 TU172 CCV123 ALSTOM 110
123.000/√3/110/√3 Y/∆hở
16 TU174 CCV123 ALSTOM 110
123.000/√3/110/√3 Y/∆hở
17 TU176 CCV123 ALSTOM 110
123.000/√3/110/√3 Y/∆hở
18 TU342 ŨT-72 ALSTOM 35
35.000/√3/110/√3 Y/∆hở
e@3N--SN+/=+kJ #Q
eNDJ KN9Y9%4J Ri
KeN997'J,
6
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
IV - Các thiết bị bảo vệ của trạm:
1 - Bảo vệ đờng dây 571.
1.1- Bảo vệ khoảng cách và qúa dòng có hớng.
GnCH7_>GQ!R,
r-=+H7_J
1100 POWER SYSTEM DATA
1101 Current transformer: Towards line
1102 System star-point condition: Solidly earthed
1103 Primarry rated voltage: 500 kV
1104 Secondary rated voltage: 110 V
1105 Primarry rated current: 1200 A
1109 Voltage transformer connection: Not connected
1110 Ching factor Uph/Udelta (sec. earth voltage): 1.73
1111 Ie Current transformer connection: Protected line
1112 Matching factor Ie/Iph for Protected line: 1.000
1113 Matching factor Ie/Iph for Parallel line: 1.000
1114 Ip Current transformer connection: Parallel line
1116 Voltage transformer U2 input: L1 - L2
1117 Earth impedance matching RE/RL: 2.64
1118 Earth impedance matching XE/XL: 0.57
1119 Mutual impedance coupling RM/RL: 0
1120 Mutual impedance coupling XM/XL: 0
1121 Line angle: 85.0 Grad
1122 Line secondary reactance Xsec: 0.074 Ohm/km
1123 Line secondary capacitance CBsec: 0.042 myF/km
1124 Line length: 390 km
1132 Phase angle between U1 and U2 (matching): 0 Grad
1133 Closing(operating) time of circuit breaker: 0.06 s
1134 Trip command minimum duration: 0.06 s
1135 close command duration: 0.06 s
1136 3 pole coupling after 1 pole trip: with trip comm.
1137 Trip type with 2 phase faults: Three-pole
1138 Load compensation: Yes
1140 Current level to detect CB position I-RES: 0.10 I/In
1141 Voltage level to detect CB position U-RES: 20 V
1142 CB close zone release extension: 0.05 s
1143 Checking of circuit breaker position: CB AUX and I<
1145 Manual close zone release extension: 0.30 s
1300 DISTANCE PROTECTION: INDEPENDENT ZONES
1301 Zone 1: Resistance (phase-phase)R1: 15.00 Ohm
7
Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
1302 Zone 1: Resistance (reach) X1: 3.88 Ohm
1303 Zone 1: Resistance (phase-earth)R1E: 20.00 Ohm
1304 Zone 1: Drection: Forwards
1305 Zone 1: Delay for single phase faults: 0.00 s
1306 Zone 1: Delay for multi- phase faults: 0.00 s
1311 Zone 2: Resistance settingR2: 15.00 Ohm
1312 Zone 2: Resistance X2: 10.37 Ohm
1313 Zone 2: Resistance (phase-earth)R2E: 20.00 Ohm
1314 Zone 2: Drection: Forwards
1315 Zone 2: Delay for single phase faults: 0.50 s
1316 Zone 2: Delay for multi- phase faults: 0.50 s
1321 Zone 3: ResistanceR3 : 15.00 Ohm
1322 Zone 3: Resistance X3 : 36.33 Ohm
1323 Zone 3: Resistance (phase-earth)R3E: 20.00 Ohm
1324 Zone 3: Drection: Forwards
1325 Zone 3: Delay for all faultsT3: 4.00 s
1400 DISTANCE PROTECTION: CONTROLLED ZONES
1401 Zone 1B: Resistance (phase-phase)R1B: 15.00 Ohm
1402 Zone 1B: Resistance (reach)X1B: 36.33 Ohm
1403 Zone 1B: Resistance (phase-earth)R1BE: 20.00 Ohm
1404 Zone 1B: Drection: Forwards
1405 Zone 1B: Delay for single phase faults: 0.00s
1406 Zone 1B: Delay for multi- phase faults: 0.00 s
1411 Zone 1L: Resistance (phase-phase)R1L: 15.00 Ohm
1412 Zone 1L: Resistance (reach)X1L: 36.33 Ohm
1413 Zone 1L: Resistance (phase-earth)R1LE: 20.00 Ohm
1414 Zone 1L: Drection: Forwards
1415 Zone 1L: Delay for all faults T1L: *
1600 DISTANCE PROTECTION: FAULT DETECTION
1620 Earth fault detection Ie>: 0.10 I/In
1621 Min. current for imped. measurement Iph>: 0.10 I/In
1622 Fault detection polygon setting X+A: 50.00 Ohm
1623 Fault detection polygon setting X-A : 50.00 Ohm
1624 Fault detection polygon setting RA1: 20.00 Ohm
1625 Fault detection polygon setting RA2: 35.00 Ohm
1626 Fault detection polygon for earthfaultRA1E : 25.00 Ohm
1627 Fault detection polygon for earthfaultRA2E : 45.00 Ohm
1628 Fault detection polygon angle PHI A: 45
0
1629 Fault detection polygon angle(earth) PHI AE: 45
0
1700 FAULTS IN EARTHED NETWORKS
8
Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
1701 Earthfault detection using Ue> : 20 V
1702 Loop selection with Ph-Ph-E fault detection: Block leading
1703 Loop selection with 3ph fault detection: E/F dependent
1707 Earthfault detection with: Ue> OR Ie>
2200 TELEPROTECT.: PERMISSIVE OVERREACH(P.O.T.T)
2201 Permissive overreach transfer trip is : ON
2202 Permissive overreach transfer trip feature: Z1B RELEASE
2203 Transient block. time after external flt : 0.01 s
2204 Waiting time for tran sient blocking : *s
2206 Send signal prolongation for P.O.T.T : 0.00 s
2210 Effective direct.for direct. comparison: Forwards
2212 Send signal delay for P.O.T.T : 0.10 s
2220 Echo function for weak infeeds : ON
2221 Echo delay time : 0.01 s
2222 Duration of echo impulse : 0.10 s
2223 Echo blocking time: 0.20 s
2400 SWITCH-ON-TO-FAULT PROTECTION
2401 Switch-on-to-fault function is : ON
2402 Release of switch-on-to-fault function: Only M/C
2404 Current for fault recognition:Isc : 1.80 I/In
2500 WEAK INFEED PROTECTION
2501 Weak infeed function is : ON
2502 Under voltage Uph : 50 V
2505 Reception signal delay(for stabilisation): 0.01 s
2506 Reception signal extension : 0.20 s
3700 OVER VOLTAGE PROTECTION
3701 Over voltage protection stage is: ON
3703 Over voltage pick-up value U> : 1.16 U/Un
3704 Over voltage reset ratio: U> reset/ U> : 0.9
3705 Trip time delay TU> : 1.00 s
3706 Over voltage compensation function : OFF
3708 Over voltage trip action: Local trip
3711 Highset over voltage protection stage is: ON
3712 Highset over voltage selection: Phase-Earth
3713 Highset over voltage pick-up value U>>: 1.75 U/Un
3714 Highset over voltage reset: U>> reset/ U>>: 0.9
3715 Highset over voltage fault detection action: OR COMBINET
3716 Delay time with closed circuit breaker: 0.06 s
3717 Delay time with open circuit breaker: 0.02 s
3718 Time for block. of highset over voltage: 0.06 s
3720 Highset over voltage trip action: Local trip
9
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
3721 Duration of sed signal: 0.25 s
1.2- Bảo vệ so lệch dọc(F87L):
GnCH7_Wse(!#,
@Ar-=+H7_J
tg@974uqG!J ,?Q
4@A0[!J Rl
tg@974uqG#J #,Q
4@A0[#J !l
'+-v-D43)-7.8^iqbJ @
G+@A-'+-v.-32J #9@_
'+-vw'-32J ,!@_
e89-8F7J e)-7.8%@AR+
e8)-J !+,
1.3- Bảo vệ so lệch dọc(F87L):.
GnCH7_J>Gt##
@Ar-=+H7_J
87-1 Pickup : 0.35 A
87-1 Value under switch on condition: 0.43 A
87-1 Trip time delay: 0.00 s
Delay 1ph-fault (comp/ isol. star-point): 0.00 s
87-2 Pickup: 2.00 A
2nd. harmonic in % of fundamental: 15%
Maximum inrush-peak value: 15.0 A
Time for Crossblock with 2nd harmonic: 0.00 s.
1.4- Bảo vệ quá dòng thứ tự không và quá áp:.
GnCH7_L9i!?!,
@Ar-=+H7_J
xL_+@3
6
-L9_J i+@_*_3-+7
V> Operrate Mode: Any phase
V> 1 Function: DT
V> 1 Voltage set: 74 V
V> 1 Time delay: 1.00 s
V> 2 Status: Enable
V> 2 Voltage set: 111 V
V> 2 Time delay: 0.00 s
Relay 1 (blocking signal): not used
Relay 2 (block AR): V>1/V>2 TRIP
Relay 3 (alarm): not used
Relay 4 (trip): V>1/V>2 TRIP
Relay 5 (intertrip): V>1/V>2 TRIP
Relay 6 (alarm): V>1 TRIP
10
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
Relay 7 (alarm): V>2 TRIP
^e5@nCS Y9%4;3-9%TE-'b
2 - Bảo vệ đờng dây 574(Hà tĩnh - Đà Nẵng):
2.1- Bảo vệ khoảng cách và qúa dòng có hớng:
GnCH7_>GQ!R,
r-=+H7_J
1100 POWER SYSTEM DATA
1101 Current transformer: Towards line
1102 System star-point condition: Solidly earthed
1103 Primarry rated voltage: 500 kV
1104 Secondary rated voltage: 110 V
1105 Primarry rated current: 1200 A
1109 Voltage transformer connection: Not connected
1110 Ching factor Uph/Udelta (sec. earth voltage): 1.73
1111 Ie Current transformer connection: Protected line
1112 Matching factor Ie/Iph for Protected line: 1
1113 Matching factor Ie/Iph for Parallel line: 1
1114 Ip Current transformer connection: Parallel line
1116 Voltage transformer U2 input: L1 - L2
1117 Earth impedance matching RE/RL: 3.6
1118 Earth impedance matching XE/XL: 0.59
1119 Mutual impedance coupling RM/RL: 0
1120 Mutual impedance coupling XM/XL: 0
1121 Line angle: 85.0 Grad
1122 Line secondary reactance Xsec: 0.073 Ohm/km
1123 Line secondary capacitance CBsec: 0.049 myF/km
1124 Line length: 391 km
1132 Phase angle between U1 and U2 (matching):0 Grad
1133 Closing(operating) time of circuit breaker: 0.06 s
1134 Trip command minimum duration: 0.06 s
1135 close command duration: 0.06 s
1136 3 pole coupling after 1 pole trip: with trip comm.
1137 Trip type with 2 phase faults: Three-pole
1138 Load compensation: Yes
1140 Current level to detect CB position I-RES: 0.10 I/In
1141 Voltage level to detect CB position U-RES: 20 V
1142 CB close zone release extension: 0.05 s
1143 Checking of circuit breaker position: CB AUX and I<
1145 Manual close zone release extension: 0.30 s
1300 DISTANCE PROTECTION: INDEPENDENT ZONES
11
Trêng ®¹i häc b¸ch khoa hµ néi
B¸o c¸o thùc tËp tèt
nghiÖp
1301 Zone 1: Resistance (phase-phase)R1: 15.00 Ohm
1302 Zone 1: Resistance (reach) X1: 3.78 Ohm
1303 Zone 1: Resistance (phase-earth)R1E: 20.00 Ohm
1304 Zone 1: Drection: Forwards
1305 Zone 1: Delay for single phase faults: 0.00 s
1306 Zone 1: Delay for multi- phase faults: 0.00 s
1311 Zone 2: Resistance settingR2: 15.00 Ohm
1312 Zone 2: Resistance X2: 10.10 Ohm
1313 Zone 2: Resistance (phase-earth)R2E: 20.00 Ohm
1314 Zone 2: Drection: Forwards
1315 Zone 2: Delay for single phase faults: 0.50 s
1316 Zone 2: Delay for multi- phase faults: 0.50 s
1321 Zone 3: ResistanceR3 : 15.00 Ohm
1322 Zone 3: Resistance X3 : 35.90Ohm
1323 Zone 3: Resistance (phase-earth)R3E: 20.00 Ohm
1324 Zone 3: Drection: Forwards
1325 Zone 3: Delay for all faultsT3: 1.00 s
1400 DISTANCE PROTECTION: CONTROLLED ZONES Z1B, Z1L
1401 Zone 1B: Resistance (phase-phase)R1B: 15.00 Ohm
1402 Zone 1B: Resistance (reach)X1B: 35.90 Ohm
1403 Zone 1B: Resistance (phase-earth)R1BE: 20.00 Ohm
1404 Zone 1B: Drection: Forwards
1405 Zone 1B: Delay for single phase faults: 0.00s
1406 Zone 1B: Delay for multi- phase faults: 0.00 s
1411 Zone 1L: Resistance (phase-phase)R1L: 15.00 Ohm
1412 Zone 1L: Resistance (reach)X1L: 35.90 Ohm
1413 Zone 1L: Resistance (phase-earth)R1LE: 20.00 Ohm
1414 Zone 1L: Drection: Forwards
1415 Zone 1L: Delay for all faults T1L: *
1600 DISTANCE PROTECTION: FAULT DETECTION
1620 Earth fault detection Ie>: 0.10 I/In
1621 Min. current for imped. measurement Iph>: 0.10 I/In
1622 Fault detection polygon setting X+A: 50.00 Ohm
1623 Fault detection polygon setting X-A : 50.00 Ohm
1624 Fault detection polygon setting RA1: 20.00 Ohm
1625 Fault detection polygon setting RA2: 35.00 Ohm
1626 Fault detection polygon for earthfaultRA1E : 25.00 Ohm
1627 Fault detection polygon for earthfaultRA2E : 45.00 Ohm
1628 Fault detection polygon angle PHI A: 45
0
1629 Fault detection polygon angle(earth) PHI AE: 45
0
12
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B¸o c¸o thùc tËp tèt
nghiÖp
1700 FAULTS IN EARTHED NETWORKS
1701 thfault detection using Ue> : 20 V
1703 Loop selection with Ph-Ph-E fault detection: Block leading
1704 Loop selection with 3ph fault detection: E/F dependent
1707 Earthfault detection with: Ue> OR Ie>
2200 TELEPROTECT.: PERMISSIVE OVERREACH(P.O.T.T)
2201 Permissive overreach transfer trip is : ON
2202 Permissive overreach transfer trip feature: Z1B RELEASE
2203 Transient block. time after external flt : 0.01 s
2204 Waiting time for tran sient blocking : *s
2206 Send signal prolongation for P.O.T.T : 0.10 s
2210 Effective direct.for direct. comparison: Forwards
2212 Send signal delay for P.O.T.T : 0.00 s
2220 Echo function for weak infeeds : ON
2221 Echo delay time : 0.01 s
2222 Duration of echo impulse : 0.10 s
2223 Echo blocking time: 0.20 s
2400 SWITCH-ON-TO-FAULT PROTECTION
2401 Switch-on-to-fault function is : ON
2402 Release of switch-on-to-fault function: Only M/C
2404 Current for fault recognition:Isc : 1.80 I/In
2500 WEAK INFEED PROTECTION
2501 Weak infeed function is : ON
2502 Undervoltage Uph : 50 V
2505 Reception signal delay(for stabilisation): 0.01 s
2506 Reception signal extension : 0.20 s
3700 OVERVOLTAGE PROTECTION
3701 Overvoltage protection stage is: ON
3703 Overvoltage pick-up value U> : 1.16 U/Un
3704 Overvoltage reset ratio: U> reset/ U> : 0.9
3705 Trip time delay TU> : 1.00 s
3706 Overvoltage compensation function : OFF
3708 Overvoltage trip action: Local trip
3711 Highset overvoltage protection stage is: ON
3712 Highset overvoltage selection: Phase-Earth
3713 Highset overvoltage pick-up value U>>: 1.75 U/Un
3714 Highset overvoltage reset: U>> reset/ U>>: 0.9
3715 Highset overvoltage fault detection action:OR COMBINET
3716 Delay time with closed circuit breaker: 0.06 s
3717 Delay time with open circuit breaker: 0.02 s
3718 Time for block. of highset over voltage: 0.06 s
13
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
3720 Highset overvoltage trip action: Local trip
3721 Duration of sed signal: 0.25 s
2.2- Bảo vệ so lệch dòng có hãm(F87L).
GnCH7_Wse(!#,
@Ar-=+H7_J
tg@974uqG!J ,?Q
4@A0[!J Rl
tg@974uqG#J #,Q
4@A0[#J !l
'+-v-D43)-7.8^iqbJ @
G+@A-'+-v.-32J #9@_
'+-vw'-32J ,!@_
e89-8F7J e)-7.8%@AR+
e8)-J !+,
2.3- Bảo vệ quá dòng pha (F51).
GnCH7_JLemmZ#,
@Ar-=+H7_J
tg5/J q@y!,#q
'+5/J -y!@
^8%TE-'Y9%4-w%Tb,
2.4- Bảo vệ quá dòng chậm đất có hớng
GnCH7_JLemm##KLzq!!,
@Ar-=+H7_J
MCGG : Current setting : Is = 0.1 In
Time setting: t = 0.1 s
METI11: Internal angles setting: +45.
3 - Bảo vệ đờng dây 580 (Hà tĩnh - Nho Quan1):
3.1- Bảo vệ khoảng cách hợp bộ :
GnCH7_>GQ!R,
@Ar-=+H7_J
1100 POWER SYSTEM DATA
1101 Relay will internally roll CT polarity: Zero Degrees
1102 System star-point condition: Solidly earthed
1103 Primarry rated voltage: 500 kV
1104 Secondary rated voltage: 110 V
1105 Primarry rated current: 1200 A
1107 Min. current for CT-saturation: 20.00 I/In
1109 Ux voltage transformer connection: Not connected
1110 Nomimal Ph to nomimal 3V0 .sec. voltage ratio : 1.73
1111 I4 Current transformer connection: Protected line
14
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B¸o c¸o thùc tËp tèt
nghiÖp
1112 Matching factor Ie/Iph (Ie Protected line): 1
1113 Matching factor Ie/Iph (Ie Parallel line): 1
1114 I5 Current transformer connection: Not connected
1117 RG/RL- Ratio of ground to line resistance: 2.65
1118 XG/XL- Ratio of ground to line resistance: 0.57
1119 Mutual compensating factor RM/RL: 0
1120 Mutual compensating factor XM/XL: 0
1121 Line angle: 85.3 Grad
1122 Line secondary reactance Xsec: 0.74 Ohm/km
1123 Line secondary capacitance CBsec: 0.048 µ F/km
1124 Line length: 307.5 km
1125 Earth current ratio parallel line comp. 85%
1130 Trip command min. duration for I > I-RES: 0.06 s
1131 Trip command min. duration for I < I-RES: 0.15 s
1135 Maximum close command duration: 0.06 s
1136 3 pole coupling after 1 pole trip: with trip comm.
1137 Trip type with 2 phase faults: Three-pole
1138 Load compensation: Yes
1140 Current threshold for open line detect. I-RES: 0.10 I/In
1141 Voltage threshold for open line detect. U-RES: 30 V
1142 CB close zone release extension: 0.05 s
1143 Checking of circuit breaker position: CB AUX and I-RES.<
1145 Prolongation time after manual closing: 0.30 s
1149 Stabilization time for external trip: 0.01 s
1300 DISTANCE PROTECTION: INDEPENDENT ZONES
1301 Zone 1: Resistance (phase-phase)R1: 15.00 Ohm
1302 Zone 1: Resistance (reach) X1: 3.21 Ohm
1303 Zone 1: Resistance (phase-earth)R1E: 20.00 Ohm
1304 Zone 1: Drection: Forwards
1305 Zone 1: Delay for single phase faults T1 1PH: 0.00 s
1306 Zone 1: Delay for multi- phase faults T1: 0.00 s
1311 Zone 2: Resistance settingR2: 15.00 Ohm
1312 Zone 2: Resistance X2: 28.26 Ohm
1313 Zone 2: Resistance (phase-earth)R2E: 20.00 Ohm
1314 Zone 2: Drection: Forwards
1315 Zone 2: Delay for single phase faults T2 1PH: 0.50 s
1316 Zone 2: Delay for multi- phase faults T2: 0.50 s
1321 Zone 3: ResistanceR3 : 15.00 Ohm
1322 Zone 3: Resistance X3 : 28.56 Ohm
1323 Zone 3: Resistance (phase-earth)R3E: 20.00 Ohm
15
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1324 Zone 3: Drection: Forwards
1325 Zone 3: Delay for all faultsT3: 1.00 s
1400 DISTANCE PROTECTION: CONTROLLED ZONES Z1B, Z1L
1401 Zone 1B: Resistance (phase-phase)R1B: 15.00 Ohm
1402 Zone 1B: Resistance (reach)X1B: 28.56 Ohm
1403 Zone 1B: Resistance (phase-earth)R1BE: 20.00 Ohm
1404 Zone 1B: Drection: Forwards
1405 Zone 1B: Delay for single phase faults: 0.00s
1406 Zone 1B: Delay for multi- phase faults: 0.00 s
1407 Coord Timer for blocking scheme : 0.01 s
1411 Zone 1L: Resistance (phase-phase)R1L: 15.00 Ohm
1412 Zone 1L: Resistance (reach)X1L: 28.56 Ohm
1413 Zone 1L: Resistance (phase-earth)R1LE: 20.00 Ohm
1414 Zone 1L: Drection: Forwards
1415 Zone 1L: Delay for all faults T1L: +*s
1600 DISTANCE PROTECTION: FAULT DETECTION
1602 Earth fault detection Ie>: 0.10 I/In
1602 Earth fault detection(independent of1707) Ie>>: 0.10 I/In
1621 Min. current for imped. measurement Iph>: 0.10 I/In
1622 Fault detection polygon setting X+A: 45.00 Ohm
1623 Fault detection polygon setting X-A : 45.00 Ohm
1624 Fault detection polygon setting RA1: 20.00 Ohm
1625 Fault detection polygon setting RA2: 45.00 Ohm
1626 Fault detection polygon for earthfaultRA1E : 30.00 Ohm
1627 Fault detection polygon for earthfaultRA2E : 55.00 Ohm
1628 Fault detection polygon angle PHI A: 45
0
1629 Fault detection polygon angle(earth) PHI AE: 45
0
1630 Overcurrent fault detection Iph>> : +* I/In
1700 FAULTS IN EARTHED NETWORKS
1701 Earthfault detection using Ue> : 20 V
1703 Loop selection with Ph-Ph-E fault detection: Block leading
1707 Earthfault detection with: Ue> and Ie>
2200 TELEPROTECT.: PERMISSIVE OVERREACH(P.O.T.T)
2201 Permissive overreach transfer trip is : ON
2202 Permissive overreach transfer trip feature: Z1B release
2203 Transient block. time after external flt : 0.05 s
2204 Waiting time for trans. blocking : +*s
2206 Send signal prolongation for P.O.T.T : 0.05 s
2210 Effective direct.for direct. comparison: Forwards
2211 Waiting time for trans. block. (reverse faults): 0.04 s
2212 Send signal delay for P.O.T.T : 0.00 s
16
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
2220 Echo function for weak infeeds : ON
2221 Echo delay time : 0.04 s
2222 Duration of echo impulse : 0.05 s
2223 Echo blocking time: 0.15 s
2400 SWITCH-ON-TO-FAULT PROTECTION
2401 tch-on-to-fault function is : ON
2402 ease of switch-on-to-fault function: Only man. close
2404 Current for fault recognition:Isc : 1.80 I/In
2500 WEAK INFEED PROTECTION
2501 Weak infeed function is : ON
2502 Under voltage Uph : 50 V
2505 Reception signal delay(for stabilisation): 0.01 s
2506 Reception signal extension : 0.20 s
3100 EARTH FAULT PROTECTION: DRECT/NON DIRECT
3101 Earth fault protection is: ON
3102 Earth fault overcurrent characteristic: Del.inite Time
3103 Earth fault overcurrent threshold Ie> , Iep: 0.50 I/In
3104 Minimum voltage for direct. measurment Ue> : 5.0 V
3106 Delay time for directional trip T-Direc : 1.50 s
3107 Direction: Forword
3108 Delay time for non-direct. trip T Non-Dir>: +*s
3111 Directional decision: With Ue and IY
3112 Ue inverse time characteristic Ue> INV: 0.2 V
3113 Rapid trip (w/3115) w/ rapid auto reclose(RAR): off
3114 Mode of operation with manual close (M/C): off
3115 Delay for RAR(3113) and MC w/ F/ D dir (3114): 0.00 s
3200 EARTH FAULT DIRECTIONAL COMPARISON PROTECTION.
3201 Earth fault directional comparison is: ON
3202 Delay time for transmission and trip: 0.00s
3203 Transient blocking time after external fault: 0.05 s
3204 Waiting time for trans. block. (missing recept): +*s
3206 Waiting time for trans. block. (reverse faults): 0.04 s
3210 Echo funtion for weak infeed: OFF
3211 Echo delay time: 0.04 s
3212 Duration of echo impulse: 0.05 s
3213 Echo blocking time: 0.40 s
3.2- Bảo vệ so lệch dòng có hãm (F87L).
GnCH7_Wse(!#,
@Ar-=+H7_J
tg@974uqG!J ,>Q
4@A0[!J Rl
17
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
tg@974uqG#J #,Q
4@A0[#J !l
'+-v-D43)-7.8^iqbJ @
G+@A-'+-v.-32J #9@_
'+-vw'-32J ,!@_
e89-8F7J e)-7.8%@AR+
e8)-J !+,
3.3- Bảo vệ so lệch dòng có hãm (F87L).
GnCH7_Lqe{L?Z,
@Ar-=+H7_J
tg@974uqG!J ,RQ
4@A0[!J Rl
tg@974uqG#J #,Q
4@A0[#J !l
'+-v-D43)-7.8^iqbJ @
G+@A-'+-v.-32J #9@_
'+-vw'-32J ,!@_
e89-8F7J e)-7.8%@AR+
e8)-J !+,
3.4- Bảo vệ quá áp ,quá dòng Io .
GnCH7_Lqe{Li!?!,
@Ar-=+H7_J
GROUP 1 EARTH FAULT 1
IN1>1 Function: DT
IN1> 1Drirection: Drirection Fwd
IN1> 1Current: 500.0 mA
IN1>1 Time delay: 1.500 s
IN1>1 T.RESET: 0.000 s
IN1>2 Function: DT
IN1>2 Drirection: Drirection Rev
IN1> 2Current: 80.00 mA
IN1> 2Time delay: 0.000 s
IN1>2 T.RESET: 0.300 s
IN1> Char Agle: - 45
0
GROUP 1 VOLT. PROTECTION.
UNDERVOLTAGE:
V< Measur
t Mode: Phase-Neutral
V< Operate Mode: Any phase
V< 1Function: Disabled
V< 2 Status: Disabled
OVERVOLTAGE:
18
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
V> Measur
t Mode: Phase-Neutral
V> Operate Mode: Any phase
V> 1Function: DT
V> Voltage set: 74 V
V> Time delay: 1.00 s
V> 2 Status: Enable
V> 1 Voltage set: 111 V
V> Time delay: 0.00 s
3.5- Bảo vệ quá áp.
GnCH7_Lqe{Li!?!,
@Ar-=+H7_J
GROUP 1 VOLT. PROTECTION.
UNDERVOLTAGE:
V< Measur
t Mode: Phase-Neutral
V< Operate Mode: Any phase
V< 1Function: Disabled
V< 2 Status: Disabled
OVERVOLTAGE:
V> Measur
t Mode: Phase-Neutral
V> Operate Mode: Any phase
V> 1Function: DT
V> Voltage set: 74 V
V> Time delay: 1.00 s
V> 2 Status: Enable
V> 1 Voltage set: 111 V
V> Time delay: 0.00 s
4 - Bảo vệ đờng dây 582 (Hà tĩnh - Nho Quan1):
4.1- Bảo vệ khoảng cách , quá áp, chống đóng vào điểm sự cố:
GnCH7_>GQ!R,
@Ar-=+H7_J
1100 POWER SYSTEM DATA
1101 Relay will internally roll CT polarity: Zero Degrees
1102 System star-point condition: Solidly earthed
1103 Primarry rated voltage: 500 kV
1104 Secondary rated voltage: 110 V
1105 Primarry rated current: 1200 A
1107 Min. current for CT-saturation: 20.00 I/In
1109 Ux voltage transformer connection: Not connected
1110 Nomimal Ph to nomimal 3V0 .sec. voltage ratio : 1.73
1111 I4 Current transformer connection: Protected line
1112 Matching factor Ie/Iph (Ie Protected line): 1
19
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1113 Matching factor Ie/Iph (Ie Parallel line): 1
1114 I5 Current transformer connection: Not connected
1117 RG/RL- Ratio of ground to line resistance: 2.65
1118 XG/XL- Ratio of ground to line resistance: 0.57
1119 Mutual compensating factor RM/RL: 0
1120 Mutual compensating factor XM/XL: 0
1121 Line angle: 85.3 Grad
1122 Line secondary reactance Xsec: 0.74 Ohm/km
1123 Line secondary capacitance CBsec: 0.048 µ F/km
1124 Line length: 290 km
1125 Earth current ratio parallel line comp. 85%
1130 Trip command min. duration for I > I-RES: 0.00 s
1131 Trip command min. duration for I < I-RES: 0.15 s
1135 Maximum close command duration: 1.00 s
1136 3 pole coupling after 1 pole trip: with trip comm.
1137 Trip type with 2 phase faults: Three-pole
1138 Load compensation: Yes
1140 Current threshold for open line detect. I-RES: 0.10 I/In
1141 Voltage threshold for open line detect. U-RES: 30 V
1142 CB close zone release extension: 0.05 s
1143 Checking of circuit breaker position: CB AUX and I-RES.<
1145 Prolongation time after manual closing: 0.30 s
1149 Stabilization time for external trip: 0.01 s
1300 DISTANCE PROTECTION: INDEPENDENT ZONES
1301 Zone 1: Resistance (phase-phase)R1: 12.00 Ohm
1302 Zone 1: Resistance (reach) X1: 2.15 Ohm
1303 Zone 1: Resistance (phase-earth)R1E: 17.00 Ohm
1304 Zone 1: Drection: Forwards
1305 Zone 1: Delay for single phase faults T1 1PH: 0.00 s
1306 Zone 1: Delay for multi- phase faults T1: 0.00 s
1311 Zone 2: Resistance settingR2: 15.00 Ohm
1312 Zone 2: Resistance X2: 27.00 Ohm
1313 Zone 2: Resistance (phase-earth)R2E: 20.00 Ohm
1314 Zone 2: Drection: Forwards
1315 Zone 2: Delay for single phase faults T2 1PH: 0.50 s
1316 Zone 2: Delay for multi- phase faults T2: 0.50 s
1321 Zone 3: ResistanceR3 : 15.00 Ohm
1322 Zone 3: Resistance X3 : 27.00 Ohm
1323 Zone 3: Resistance (phase-earth)R3E: 20.00 Ohm
1324 Zone 3: Drection: Forwards
20
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1325 Zone 3: Delay for all faultsT3: 1.00 s
1400 DISTANCE PROTECTION: CONTROLLED ZONES Z1B, Z1L
1401 Zone 1B: Resistance (phase-phase)R1B: 15.00 Ohm
1402 Zone 1B: Resistance (reach)X1B: 27.00 Ohm
1403 Zone 1B: Resistance (phase-earth)R1BE: 20.00 Ohm
1404 Zone 1B: Drection: Forwards
1405 Zone 1B: Delay for single phase faults: 0.00s
1406 Zone 1B: Delay for multi- phase faults: 0.00 s
1407 Coord Timer for blocking scheme : 0.01 s
1411 Zone 1L: Resistance (phase-phase)R1L: 15.00 Ohm
1412 Zone 1L: Resistance (reach)X1L: 27.00 Ohm
1413 Zone 1L: Resistance (phase-earth)R1LE: 20.00 Ohm
1414 Zone 1L: Drection: Forwards
1415 Zone 1L: Delay for all faults T1L: +*s
1600 DISTANCE PROTECTION: FAULT DETECTION
1602 Earth fault detection Ie>: 0.10 I/In
1602 Earth fault detection(independent of1707) Ie>>: 0.10 I/In
1621 Min. current for imped. measurement Iph>: 0.10 I/In
1622 Fault detection polygon setting X+A: 45.00 Ohm
1623 Fault detection polygon setting X-A : 45.00 Ohm
1624 Fault detection polygon setting RA1: 20.00 Ohm
1625 Fault detection polygon setting RA2: 45.00 Ohm
1626 Fault detection polygon for earthfaultRA1E : 30.00 Ohm
1627 Fault detection polygon for earthfaultRA2E : 55.00 Ohm
1628 Fault detection polygon angle PHI A: 45
0
1629 Fault detection polygon angle(earth) PHI AE: 45
0
1630 Overcurrent fault detection Iph>> : +* I/In
1700 FAULTS IN EARTHED NETWORKS
1701 Earthfault detection using Ue> : 20 V
1703 Loop selection with Ph-Ph-E fault detection: Block leading
1707 Earthfault detection with: Ue> or Ie>
2200 TELEPROTECT.: PERMISSIVE OVERREACH(P.O.T.T)
2201 Permissive overreach transfer trip is : ON
2202 Permissive overreach transfer trip feature: Z1B release
2203 Transient block. time after external flt : 0.05 s
2204 Waiting time for trans. blocking : +*s
2206 Send signal prolongation for P.O.T.T : 0.05 s
2210 Effective direct.for direct. comparison: Forwards
2211 Waiting time for trans. block. (reverse faults): 0.04 s
2212 Send signal delay for P.O.T.T : 0.00 s
2220 Echo function for weak infeeds : OFF
21
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
2221 Echo delay time : 0.04 s
2222 Duration of echo impulse : 0.05 s
2223 Echo blocking time: 0.15 s
2403 SWITCH-ON-TO-FAULT PROTECTION
2404 Switch-on-to-fault function is : ON
2405 Release of switch-on-to-fault function: Only man. close
2404 Current for fault recognition:Isc : 1.80 I/In
3700 OVER VOLTAGE PROTECTION
3701 Over voltage protection stage is: ON
3703 Over voltage pick-up value U> : 1.3 U/Un
3704 Over voltage reset ratio: U> reset/ U> : 0.9
3705 Trip time delay T-U> : 1.00 s
3706 Over voltage compensation function : OFF
3708 Over voltage trip action: Local trip
3711 Highset over voltage protection stage is: ON
3712 Highset over voltage selection: Phase-Earth
3713 Highset over voltage pick-up value U>>: 1.75 U/Un
3714 Highset over voltage reset: U>> reset/ U>>: 0.9
3715 Highset over voltage fault detection action: OR COMBINET
3716 Delay time with closed circuit breaker: 0.06 s
3717 Delay time with open circuit breaker: 0.02 s
3718 Time for block. of highset over voltage: 0.06 s
3720 Highset over voltage trip action: Local trip
3721 Duration of sed signal: 0.25 s
4.2- Bảo vệ so lệch dọc (F87L).
GnCH7_J>Gt##
@Ar-=+H7_J
87-1 Pickup : 0.54 A
87-1 Value under switch on condition: 0.86 A
87-1 Trip time delay: 0.00 s
Delay 1ph-fault (comp/ isol. star-point): 0.00 s
87-2 Pickup: 1.200 A
4.3- Bảo vệ so lệch dòng có hãm (F87L).
GnCH7_Lqe{L?Z,
@Ar-=+H7_J
tg@974uqG!J ,Q
4@A0[!J Rl
tg@974uqG#J #,Q
4@A0[#J !l
4.4- Bảo vệ quá áp ,quá dòng Io :
^mI#8J@nC$79H7_%-@Ar-+3b,
22
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
GnCH7_Lqe{Li!?!,
@Ar-=+H7_J
GROUP 1 EARTH FAULT 1
IN1>1 Function: DT
IN1> 1Drirection: Drirection Fwd
IN1> 1Current: 500.0 mA
IN1>1 Time delay: 1.500 s
IN1>1 t.RESET: 0.000 s
IN1>2 Function: DT
IN1>2 Drirection: Drirection Rev
IN1> 2Current: 80.00 mA
IN1> 2Time delay: 0.000 s
IN1>2 t.RESET: 0.300 s
IN1> Char Agle: - 45
0
GROUP 1 VOLT. PROTECTION.
UNDERVOLTAGE:
V< Measur
t Mode: Phase-Neutral
V< Operate Mode: Any phase
V< 1Function: Disabled
V< 2 Status: Disabled
OVERVOLTAGE:
V> Measur
t Mode: Phase-Neutral
V> Operate Mode: Any phase
V> 1Function: DT
V> Voltage set: 74 V
V> Time delay: 1.00 s
V> 2 Status: Enable
V> 1 Voltage set: 111 V
V> Time delay: 0.00 s
5 - Bảo vệ đờng dây 272.
5.1- Bảo vệ khoảng cách và qúa dòng có hớng(F21).
GnCH7_ziQeR
@Ar-=+H7_J
LINE CHARACTERISTICS:
Nominal frequency: 50 Hz
Nominal voltage: 110V
Nominal current: 1A
Line lenght: 63.04 km
Voltage ratio (Ku): 2045
Current ratio (Ki): 1200
R1 positive sequence Resistance: 3.81Ohm
23
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B¸o c¸o thùc tËp tèt
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X1 positive sequence Resistance: 15.86 Ohm
Z1 positive sequence Resistance: 16.31 Ohm
Argument of Z1: 76 Degree
R01 positive sequence Resistance: 9.36 Ohm
X01 positive sequence Resistance: 55.51Ohm
Z01 positive sequence Resistance: 56.294 Ohm
Argument of Z01: 80 Degree
R02 positive sequence Resistance: 9.36 Ohm
X02 positive sequence Resistance: 55.51 Ohm
Z02 positive sequence Resistance: 56.294 Ohm
Argument of Z1: 80 Degree
K01r Real of K01: 0.81
K01x Imaginary of K01: 0.07
K02r Real of K02: 0.81
K02x Imaginary of K02: 0.07
ZONE SETTING:
Zone 1 impedance: 13.05 Ohm LV
Zone 2 impedance: 19.68 Ohm LV
Zone 3 impedance: 49 Ohm LV
Zone 4 impedance: 49 Ohm LV
Zone 5 impedance: 13 Ohm LV
Zone 3 Direction: Forwards
Zone 1 Time delay (T1): 0 ms
Zone 2 Time delay (T2): 500 ms
Zone 3 Time delay (T3): 4000 ms
Zone 4 Time delay (T4): 5000 ms
Zone 5 Time delay (T5): 5000 ms
Phase - earth resistance zone 1: 21 Ohm LV
Phase - phase resistance zone 1: 21 Ohm LV
Limit resistance for zone 2: 23 Ohm LV
Limit resistance for zone 3: 30 Ohm LV
Starting limit resistance: 65 Ohm LV
FUSE FAILURE SETTING:
I0 and I2 threshold detection: 0.05 In
Fuse failure alarm time delay: 1 s
Ifus> enabled
Ifus> threshold: 1 In
Tfus> time-delay: 1000 ms
Ifus> enabled
Ifus> threshold: 2.5 In
Tfus> time-delay: 300 ms
24
Trờng đại học bách khoa hà nội
Báo cáo thực tập tốt
nghiệp
5.2- Bảo vệ khoảng cách và qúa dòng có hớng(F21).
GnCH7_>GQ!!,
@Ar-=+H7_J
1100 POWER SYSTEM DATA
1101 Current transformer: Towards line
1102 System star-point condition: Solidly earthed
1103 Primarry rated voltage: 225 kV
1104 Secondary rated voltage: 110 V
1105 Primarry rated current: 1200 A
1109 voltage transformer connection: Not connected
1110 Matching factor Uph/Udelta (sec. earth voltage): 1.73
1112 Matching factor Ie/Iph for earth current: 1.000
1117 Residual compensating factor: RE/RL 0.49
1118 Residual compensating factor: XE/XL 0.83
1122 Secondaryreactance per unit line length Xsec: 0.252 Ohm/km
1124 Line length: 63.04 km
1130 Trip command min.duration for I > I-RES: 0.05 s
1131 Trip command min.duration for I < I-RES: 0.15 s
1135 Maximum close command duration: 1.00 s
1136 3 pole coupling: with fault detection
1137 Trip type with 2 phase faults: Three-pole
1145 Prolongation time after manual closing: 0.30 s
1149 Stabilization time for external trip: 0.01 s
1300 DISTANCE PROTECTION: INDEPENDENT ZONES
1301 Zone 1: Resistance (phase-phase)R1: 3.05 Ohm
1302 Zone 1: Resistance (reach) X1: 12.69 Ohm
1303 Zone 1: Resistance (phase-earth) R1E: 21.00 Ohm
1304 Zone 1: Drection: Forwards
1305 Zone 1: Delay for single phase faults T1 1PH: 0.00 s
1306 Zone 1: Delay for multi- phase faults T1: 0.00 s
1311 Zone 2: Resistance (phase-phase) R2: 4.58 Ohm
1312 Zone 2: Resistance (reach) X2: 19.04 Ohm
1313 Zone 2: Resistance (phase-earth) R2E: 23.00 Ohm
1314 Zone 2: Drection: Forwards
1315 Zone 2: Delay for single phase faults T2 1PH : 0.50 s
1316 Zone 2: Delay for multi- phase faults T2: 0.50 s
1317 Single pole trip for faults in Z2: no
1321 Zone 3: Resistance (phase-phase) R3: 11.39 Ohm
1322 Zone 3: Resistance (reach) X3: 47.65 Ohm
1323 Zone 3: Resistance (phase-earth) R3E: 30.00 Ohm
1324 Zone 3: Drection: Forwards
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