
local Ch1 Tx connects to a remote Ch2 Rx, and the corresponding Ch1 Rx and Ch2 Tx are connected together as
shown in the earlier figure (Fibre Teleprotection Connections for a Three Terminal Scheme).
This Three Terminal scheme uses a triangulation approach and is designed to function if a communications link
between two terminals is not present or is degraded. 8 duplex teleprotection commands are available between
any pair of terminals even if one communication channel fails.
Logical Channel 1 is associated with Physical Channel 1, and Logical Channel 2 is associated with Physical Channel
2.
Consider a Three terminal scheme where the terminals are referenced as Local, Remote1, and Remote2. Remote 1
correlates to Ch1, and Remote 2 correlates to Ch2. The Local terminal will send the commands that it wants
Remote 1 to act on to both Remote 1 and Remote 2. Upon receipt, Remote 1 acts upon the commands that the
Local terminal wants it to use. Remote 1 also packages the commands that it wants Remote 2 to use, together
with a copy of the commands that Local wants Remote 2 to use, and also the commands it wants Local to use.
Remote 1 sends the message to Remote2. Remote 2 acts similarly. The same process occurs in the opposite
direction around the ring, so in the event of a single channel failure, and if all terminals have the same mappings
for the 8 IM64 bits integrity will be maintained for all 8 duplex commands between connected terminals.
In a triangulated scheme, at each terminal, Logical Channel 1 commands are assigned to Physical Channel 1, and
Logical Channel 2 commands are assigned to Physical Channel 2. At each terminal, the eight IM64 commands
transmitted on Physical Channel 1 are intended for the device connected as its Remote 1, and the eight IM64
commands transmitted on Channel 2 are intended for the device connected as its Remote 2. So, eight full-duplex
commands are available between any two terminals. Each device transmits both channels of eight IM64
commands to the connected devices. At the Remote 1 device, the eight Channel 1 IM64 commands are used
directly by the receiving device which passes through the eight Channel 2 IM64 commands to the remote 2 device.
All three devices in the scheme perform similarly, ensuring that, so long as one device is able to communicate with
the other two, scheme integrity is maintained.
This Chain topology (normally invoked when a communication link fails) can be used to save cost in a three-
terminal scheme. This is because two legs are cheaper to install than full triangulation implementation. Also if a
suitable communication link is not available between two of the line ends, it may be the only option. If a Chain
topology is used, or one link in a fully triangulated scheme is lost, the operating delay of the teleprotection
commands increases by approximately 7 ms, plus the communications channel signalling delay, due to the
extended path length and additional processing.
3.1.6
PHYSICAL CONNECTION
The protection communications into and out of the products are fibre-optic. Connections are made using BFOC/2.5
connectors (BFOC/2.5 connectors are commonly referred to as “ST” connectors where “ST” is a registered
trademark of AT&T).
According to application, different fibre-optic interfaces are available described in the following table:
Wavelength of light (nm)
Fibre type
Maximum transmission distance (km)
850
Multi-mode
1
1300
Multi-mode
50
1300
Single-mode
100
1550
Single-mode
150
Connections are made using appropriate fibre-optic cables terminated with BFOC/2.5 connectors. The transmitter
of one device (for example Tx1) is connected to the receiver of another (Rx1 or Rx2 according to the scheme set-
up)
Products can be supplied with the following fibre-optic channel arrangements:
Ch 1
Ch2
850 nm
850 nm
P446SV
Chapter 19 - Fibre Teleprotection
P446SV-TM-EN-1
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Содержание MiCOM P40 Agile
Страница 2: ......
Страница 24: ...Contents P446SV xxii P446SV TM EN 1 ...
Страница 33: ...CHAPTER 1 INTRODUCTION ...
Страница 34: ...Chapter 1 Introduction P446SV 2 P446SV TM EN 1 ...
Страница 46: ...Chapter 1 Introduction P446SV 14 P446SV TM EN 1 ...
Страница 47: ...CHAPTER 2 SAFETY INFORMATION ...
Страница 48: ...Chapter 2 Safety Information P446SV 16 P446SV TM EN 1 ...
Страница 60: ...Chapter 2 Safety Information P446SV 28 P446SV TM EN 1 ...
Страница 61: ...CHAPTER 3 HARDWARE DESIGN ...
Страница 62: ...Chapter 3 Hardware Design P446SV 30 P446SV TM EN 1 ...
Страница 88: ...Chapter 3 Hardware Design P446SV 56 P446SV TM EN 1 ...
Страница 89: ...CHAPTER 4 SOFTWARE DESIGN ...
Страница 90: ...Chapter 4 Software Design P446SV 58 P446SV TM EN 1 ...
Страница 101: ...CHAPTER 5 CONFIGURATION ...
Страница 102: ...Chapter 5 Configuration P446SV 70 P446SV TM EN 1 ...
Страница 124: ...Chapter 5 Configuration P446SV 92 P446SV TM EN 1 ...
Страница 125: ...CHAPTER 6 SAMPLED VALUE OPERATION ...
Страница 126: ...Chapter 6 Sampled Value Operation P446SV 94 P446SV TM EN 1 ...
Страница 136: ...Chapter 6 Sampled Value Operation P446SV 104 P446SV TM EN 1 ...
Страница 137: ...CHAPTER 7 DISTANCE PROTECTION ...
Страница 138: ...Chapter 7 Distance Protection P446SV 106 P446SV TM EN 1 ...
Страница 196: ...Chapter 7 Distance Protection P446SV 164 P446SV TM EN 1 ...
Страница 197: ...CHAPTER 8 CARRIER AIDED SCHEMES ...
Страница 198: ...Chapter 8 Carrier Aided Schemes P446SV 166 P446SV TM EN 1 ...
Страница 240: ...Chapter 8 Carrier Aided Schemes P446SV 208 P446SV TM EN 1 ...
Страница 241: ...CHAPTER 9 NON AIDED SCHEMES ...
Страница 242: ...Chapter 9 Non Aided Schemes P446SV 210 P446SV TM EN 1 ...
Страница 256: ...Chapter 9 Non Aided Schemes P446SV 224 P446SV TM EN 1 ...
Страница 257: ...CHAPTER 10 POWER SWING FUNCTIONS ...
Страница 258: ...Chapter 10 Power Swing Functions P446SV 226 P446SV TM EN 1 ...
Страница 281: ...CHAPTER 11 AUTORECLOSE ...
Страница 282: ...Chapter 11 Autoreclose P446SV 250 P446SV TM EN 1 ...
Страница 376: ...Chapter 11 Autoreclose P446SV 344 P446SV TM EN 1 ...
Страница 377: ...CHAPTER 12 CB FAIL PROTECTION ...
Страница 378: ...Chapter 12 CB Fail Protection P446SV 346 P446SV TM EN 1 ...
Страница 389: ...CHAPTER 13 CURRENT PROTECTION FUNCTIONS ...
Страница 390: ...Chapter 13 Current Protection Functions P446SV 358 P446SV TM EN 1 ...
Страница 416: ...Chapter 13 Current Protection Functions P446SV 384 P446SV TM EN 1 ...
Страница 417: ...CHAPTER 14 VOLTAGE PROTECTION FUNCTIONS ...
Страница 418: ...Chapter 14 Voltage Protection Functions P446SV 386 P446SV TM EN 1 ...
Страница 431: ...CHAPTER 15 FREQUENCY PROTECTION FUNCTIONS ...
Страница 432: ...Chapter 15 Frequency Protection Functions P446SV 400 P446SV TM EN 1 ...
Страница 438: ...Chapter 15 Frequency Protection Functions P446SV 406 P446SV TM EN 1 ...
Страница 439: ...CHAPTER 16 MONITORING AND CONTROL ...
Страница 440: ...Chapter 16 Monitoring and Control P446SV 408 P446SV TM EN 1 ...
Страница 476: ...Chapter 16 Monitoring and Control P446SV 444 P446SV TM EN 1 ...
Страница 477: ...CHAPTER 17 SUPERVISION ...
Страница 478: ...Chapter 17 Supervision P446SV 446 P446SV TM EN 1 ...
Страница 490: ...Chapter 17 Supervision P446SV 458 P446SV TM EN 1 ...
Страница 491: ...CHAPTER 18 DIGITAL I O AND PSL CONFIGURATION ...
Страница 492: ...Chapter 18 Digital I O and PSL Configuration P446SV 460 P446SV TM EN 1 ...
Страница 504: ...Chapter 18 Digital I O and PSL Configuration P446SV 472 P446SV TM EN 1 ...
Страница 505: ...CHAPTER 19 FIBRE TELEPROTECTION ...
Страница 506: ...Chapter 19 Fibre Teleprotection P446SV 474 P446SV TM EN 1 ...
Страница 522: ...Chapter 19 Fibre Teleprotection P446SV 490 P446SV TM EN 1 ...
Страница 523: ...CHAPTER 20 ELECTRICAL TELEPROTECTION ...
Страница 524: ...Chapter 20 Electrical Teleprotection P446SV 492 P446SV TM EN 1 ...
Страница 534: ...Chapter 20 Electrical Teleprotection P446SV 502 P446SV TM EN 1 ...
Страница 535: ...CHAPTER 21 COMMUNICATIONS ...
Страница 536: ...Chapter 21 Communications P446SV 504 P446SV TM EN 1 ...
Страница 606: ...Chapter 21 Communications P446SV 574 P446SV TM EN 1 ...
Страница 607: ...CHAPTER 22 CYBER SECURITY ...
Страница 608: ...Chapter 22 Cyber Security P446SV 576 P446SV TM EN 1 ...
Страница 625: ...CHAPTER 23 INSTALLATION ...
Страница 626: ...Chapter 23 Installation P446SV 594 P446SV TM EN 1 ...
Страница 637: ...CHAPTER 24 COMMISSIONING INSTRUCTIONS ...
Страница 638: ...Chapter 24 Commissioning Instructions P446SV 606 P446SV TM EN 1 ...
Страница 695: ...CHAPTER 25 MAINTENANCE AND TROUBLESHOOTING ...
Страница 696: ...Chapter 25 Maintenance and Troubleshooting P446SV 664 P446SV TM EN 1 ...
Страница 712: ...Chapter 25 Maintenance and Troubleshooting P446SV 680 P446SV TM EN 1 ...
Страница 713: ...CHAPTER 26 TECHNICAL SPECIFICATIONS ...
Страница 714: ...Chapter 26 Technical Specifications P446SV 682 P446SV TM EN 1 ...
Страница 741: ...APPENDIX A ORDERING OPTIONS ...
Страница 742: ...Appendix A Ordering Options P446SV P446SV TM EN 1 ...
Страница 744: ...Appendix A Ordering Options P446SV A2 P446SV TM EN 1 ...
Страница 745: ...APPENDIX B SETTINGS AND SIGNALS ...
Страница 746: ...Appendix B Settings and Signals P446SV P446SV TM EN 1 ...
Страница 954: ...Appendix B Settings and Signals P446SV B208 P446SV TM EN 1 ...
Страница 955: ...APPENDIX C WIRING DIAGRAMS ...
Страница 956: ...Appendix C Wiring Diagrams P446SV P446SV TM EN 1 ...
Страница 960: ......
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