⎯
79
⎯
6
F
2
S
0
8
3
5
To determine the dead time, it is essential to find an optimal value while taking into
consideration the de-ionization time and power system stability factors, which normally
contradict each other.
Normally, a longer de-ionization time is required for a higher line voltage or larger fault current.
For three-phase autoreclose, the dead time is generally 15 to 30 cycles. In single-phase
autoreclose, the secondary arc current induced from the healthy phases may affect the
de-ionization time. Therefore, it is necessary to set a longer dead time for single-phase
autoreclose compared to that for three-phase autoreclose.
In three-phase autoreclose, if the voltage and synchronism check does not operate within the
period of time set on the on-delay timer TRR, which is started at the same time as the dead time
counter TTPR1 is started, reclosing is not performed and three-phase autoreclose is reset to its
initial state. Therefore, for example, the TRR is set to the time setting of the TTPR1 plus 100ms.
The TEVLV determines the possibility of three-phase reclosing for an evolving fault.
When the TEVLV is set to the same setting as the TSPR, three-phase reclosing is performed for
all evolving faults. As the setting for the TEVLV is made shorter, the possibility of three-phase
reclosing for an evolving fault becomes smaller and that of three-phase final tripping becomes
larger.
For the two-breaker autoreclose, the following additional settings are required.
Element Range
Step Default
Remarks
VTs2
1 - 20000
1
2000
VT ratio for voltage and synchronism checkSYN2
TSPR2
0.1 – 10.0s
0.1s
0.1s
Dead time for single-phase autoreclose of follower
breaker
TTPR2
0.1 – 10.0s
0.1s
0.1s
Dead time for three-phase autoreclose of follower
breaker
TMPR2
0.1 – 10.0s
0.1s
0.1s
Dead time for multi-phase autoreclose of follower
breaker
TRDY2
5 – 300s
1s
60s
Reclaim time of follower breaker
SYN2
Synchronism
check
SY2
θ
5 – 75°
1°
30°
SY2UV
10 – 150V
1V
83V
SY2OV
10 – 150V
1V
51V
OVL2
10 – 150V
1V
51V
Live line check
UVL2
10 – 150V
1V
13V
Dead line check
TSYN2
0.01 – 10.00s
0.01s
1.00s
Synchronism check time
TLBD2
0.01 – 1.00s
0.01s
0.05s
Voltage check time
TDBL2
0.01 – 1.00s
0.01s
0.05s
Voltage check time
TW2
0.1 – 10.0s
0.1s
0.2s
Reclosing signal output time
[ARC-CB]
ONE/O1/O2/L1/L2
L1
Two breaker autoreclose mode
[ARC-CCB] TPAR/MPAR/OFF
MPAR Center breaker autoreclose mode
[VCHK] OFF/LB1/LB2/DB/SYN
LB1 Energizing
direction
Note :
[ARC-CB]
is set to "
ONE
" only when the relay is applied to one-breaker system. Trip and
reclose commands are output only for CB1(bus CB).
Содержание GRL100-101A
Страница 8: ... 7 6 F 2 S 0 8 3 5 6 7 4 Resumption of Service 220 6 7 5 Storage 220 7 Putting Relay into Service 221 ...
Страница 223: ... 222 6 F 2 S 0 8 3 5 ...
Страница 228: ... 227 6 F 2 S 0 8 3 5 Appendix B Signal List ...
Страница 256: ... 255 6 F 2 S 0 8 3 5 Appendix C Variable Timer List ...
Страница 258: ... 257 6 F 2 S 0 8 3 5 Appendix D Binary Output Default Setting List ...
Страница 269: ... 268 6 F 2 S 0 8 3 5 ...
Страница 270: ... 269 6 F 2 S 0 8 3 5 Appendix E Details of Relay Menu ...
Страница 279: ... 278 6 F 2 S 0 8 3 5 ...
Страница 288: ... 287 6 F 2 S 0 8 3 5 Appendix G Typical External Connection ...
Страница 326: ... 325 6 F 2 S 0 8 3 5 Appendix J Return Repair Form ...
Страница 330: ... 329 6 F 2 S 0 8 3 5 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Страница 331: ... 330 6 F 2 S 0 8 3 5 ...
Страница 332: ... 331 6 F 2 S 0 8 3 5 Appendix K Technical Data ...
Страница 343: ... 342 6 F 2 S 0 8 3 5 ...
Страница 344: ... 343 6 F 2 S 0 8 3 5 Appendix L Symbols Used in Scheme Logic ...
Страница 347: ... 346 6 F 2 S 0 8 3 5 ...
Страница 348: ... 347 6 F 2 S 0 8 3 5 Appendix M Multi phase Autoreclose ...
Страница 351: ... 350 6 F 2 S 0 8 3 5 ...
Страница 352: ... 351 6 F 2 S 0 8 3 5 Appendix N Data Transmission Format ...
Страница 358: ... 357 6 F 2 S 0 8 3 5 Appendix O Example of DIF and DIFG Setting ...
Страница 360: ... 359 6 F 2 S 0 8 3 5 Appendix P Programmable Reset Characteristics and Implementation of Thermal Model to IEC60255 8 ...
Страница 364: ... 363 6 F 2 S 0 8 3 5 Appendix Q IEC60870 5 103 Interoperability ...
Страница 377: ... 376 6 F 2 S 0 8 3 5 ...
Страница 378: ... 377 6 F 2 S 0 8 3 5 Appendix R Failed Module Tracing and Replacement ...
Страница 384: ... 383 6 F 2 S 0 8 3 5 Appendix S PLC Setting Sample ...
Страница 386: ... 385 6 F 2 S 0 8 3 5 Appendix T Ordering ...
Страница 392: ......