1. Centralised Traffic Control Working On Dhamra line of ECoR
P. Venkata Ramana, Senior Professor (Signal)
Indian Railway Institute of Signal Engg & Telecommunication, Secunderabad
Railway Convention on 3Cs Systems
Manekshaw Convention Centre, New Delhi
28th & 29th August, 2015

2. DHAMRA PORT BAY OF BENGAL
Dhamra Port – Deep draught, All Weather, Multiuser Sea Port
At the mouth of River Dhamra
On East Coast of India located between Haldia & Paradeep Ports
In Bhadrak District of Odisha State

3. DHAMRA LINE Ranital Link Bhatatira Bhadrak Tihiri Gurudaspur Bansara
PPP Model 62KMs Railway Line from Port to Nearest Railhead Bhadrak
Connectivity to HWH-CEN Trunk Route
Opened for Freight Traffic in May, 2011
Today – 10 rakes per day
Dhamra

4. DHAMRA LINE

5. SYSTEM OF WORKING Ranital Link: Special Class Station
Bhatatira Jn: B Class 6 line Station
Tihiri: C Class Station
Gurudaspur: B Class 4 line Station
Bansara: C Class Station
Dhamra Terminal: B Class 8 line Station
Port Bulb 1: Special Class Station
Port Bulb 2: Special Class Station

6. SYSTEM OF WORKING Multiple Aspect Colour Light Signalling (MACLS)
Interlocking Controller
Single Processor with Diverse Software
Hot Standby
Keyboard, Video, Mouse (KVM)
Data logging & Diagnostics
Track detection by track circuits
LED Signals

7. SYSTEM OF WORKING Conventional Double line Block:
Bhatatira – Bhadrak -- Ranital link junction cabin
Inter-cabin Slot working
Dhamra Terminal - Port Bulb 1 & Port Bulb 2 
Electronic Block:
Bhatatira – Tihiri – Gurudaspur – Bansara –Dhamra Terminal
Block Section Proving by Axle Counters

8. WAYSIDE STATION Interlocking Controllers – Main and Standby
Interlocking Controller – certified for ATM or CTC working
Diagnostic Terminal
KVMs for Panel Operation
Optical Fibre Switches for CTC Connectivity to adjacent stations
Westrace – Westinghouse Train Radio Advanced Control Equipment
Marik 1 VLM6

9. CTC CONFIGURATION Application Servers – CTC, in duplicate
WestCAD: Westinghouse Control And Display system
Control Terminals – Controller Workstation, Supervisory Workstation, Operations Manager Workstation
GPS based Time Servers - with GPS Antenna in duplicate for synchronising the clocks of all central and wayside systems
Network Devices – Switches & Routers for dark fibre connectivity and local Ethernet
Diagnostic & Maintenance Panel – Video Replay, Data logging and diagnostics

10. CTC NETWORK Bhathatira – Dhamra terminal – Port Bulb stations
Centralised Operations - Dhamra Control Centre
Network Connectivity to all stations over 2 dark fibres on Ring topology to achieve redundancy paths
Single Mode fibres, Full duplex – Separate Tx/Rx

11. CTC FEATURES Application Servers Control Terminals
In duplicate
Control Terminals
Controller, Supervisory, Operations
GPS based Time Servers
GPS Antenna
Network Devices
Industrial Grade Switches & Routers for Dark fibre & Local Ethernet
Diagnostic & Maintenance Panel
Video Replay, Data logging & Diagnostics

12. CTC FEATURES Application Modules Alarms & Enunciators Algorithm
Station Layouts
Status of Interlocking Controllers
Alarms & Enunciators
Local & Remote Faults
Algorithm
Application Data design
User Authentication
Route Stacking
Fleet mode
KVM
NMS

13. CTC FEATURES Local/Remote Operation All Emergency Cancellations
Signals, Switches, Crank Handle & Gate Controls
Block Operation
All Emergency Cancellations
Except Emergency Switch Operation

14. CTC NETWORK

15. CTC NETWORK Bhathatira – Dhamra terminal – Port Bulb stations
Centralised Operations - Dhamra Control Centre
Network Connectivity to all stations over 2 dark fibres on Ring topology to achieve redundancy paths
Single Mode fibres, Full duplex – Separate Tx/Rx

16. Essentials of Absolute Block Working
For Single line provided with MACLS
Line Clear has been received from the Block Station in advance
The line is clear of trains running in the same direction, up to the first stop signal and an adequate distance beyond it
The line is clear of trains running in the opposite direction
The adequate distance shall not be less than 180 meters in MACLS
Essentials of Absolute Block System for Single line provided with mutli-aspect signalling as per General & Subsidiary Rules:
Where trains are worked on the Absolute Block System, no train shall be allowed to leave a block station unless Line Clear has been received from the Block Station in advance,
and on Single Line such Line Clear shall not be given unless the line is clear of trains running in the same direction, not only up to the first stop signal at the Block Station at which such Line Clear is given,
but also for an adequate distance beyond it, and is clear of trains running in the direction towards the block station to which such Line Clear is given.
Unless otherwise directed by approved special instructions, the adequate distance shall not be less than 180 meters in case of multiple aspect colour light signalling

17. Special Requirements - Indications
LINE CLOSED
At both the stations
When the instruments are normal and there is no train in the block section
TRAIN COMING FROM
At the receiving station
When Line Clear for a train to leave the Block station in rear has been given
TRAIN GOING TO
At the sending station
When Line Clear for a train to leave a Block station has been received from the Block station ahead
TRAIN ON LINE
For Token less Block Instruments
Special requirements for Single Line Block Instruments as per Signal Engineering Manual:
The instruments shall be provided with visual indication clearly giving the-following indications :
·  When the instruments are normal and there is no train in the block section, ‘Line Closed’ at both the stations.
·  When Line Clear for a train to leave the Block station in rear has been given, ‘Train Coming From’ at the receiving station
·  When Line Clear for a train to leave a Block station has been received from the Block station ahead, ‘Train Going To’ at the sending station.
In addition to the fixed indications in Token less Block Instruments, the instrument shall be provided with means to indicate ‘Train On Line’ at both the sending and receiving stations when a train has entered the block section.

18. Special Requirements – Push Button
TRAIN GOING TO & COMING FROM
Button for TRAIN GOING TO
Co-operation of the Station Masters be dispensed with
TRAIN ON LINE be automatic
LINE CLOSED
Button for LINE CLOSED
Can be dispensed with where an automatic device of closing the Block section is provided

19. BLOCK WORKING

20. BLOCK WORKING Steps Involved Establishment of Direction of Traffic
Obtaining ‘Line Clear’
Closing of Block Section

21. DIRECTION SETTING Bhattathira Tihiri Gurudaspur Signals S1 RECR Up
Bhattathira
Tihiri
Gurudaspur
Signals
S1 RECR Up
S22 RECR Up
S2 RECR Up
S2 RCER Up
S17 RECR Up
Track Circuits
1T Up
BAXT Up
2T Up
Bhathatira-Tihiri-Gurudaspur Section
Single line
Bhathatita and Gurudaspur B Class stations
– Loop lines
Tihiri C Class Station
– No Loop line for giving Precedence or arranging crossing of two trains

22. DIRECTION SETTING

23. LINE CLEAR Bhatatira Tihiri Signals S1 RECR up S22 RECR up S1 RECR Up
Track Circuits
1T Up
BAXT Up
2T Up
ZR1 Up, ZR2 Up, ZR3 Up
Bhathatira-Tihiri-Gurudaspur Section
Single line
Bhathatita and Gurudaspur B Class stations
– Loop lines
Tihiri C Class Station
– No Loop line for giving Precedence or arranging crossing of two trains

24. LINE CLEAR

25. LINE CLOSED CONDITIONS FOR LINE CLOSED Bhatatira Tihiri Signals
S1 RECR Up
S22 RECR Up
S2 RECR Up
Track Circuits
1T Up
BAXT Up
2T Up
ZR1 Up
ZR2 Up
ZR3 Up
SEQUENTIAL RELAY PROVING
FOR TRAIN TIHIRI
ZR1 Up
ZR2 Up
ZR3 Up
BAXT Dn
2T Dn
1T Dn
S2 SET
2T Up
BAXT Up
1T Up

26. BLOCK WORKING IMPLEMENTATION
Block Control Chart
Application Data design & Logic

27. CONCLUSION
Showcase
Integration of Absolute Block Working with Interlocking Controllers at Wayside stations
Centralized Remote Operation
Traffic operations are found to be economical & efficient
Less manpower & NMS
Throughput, Fleet mode
Marginal cost - next phase of expansion
30MTPA freight traffic – Current Year
57MTPA freight traffic – Year 2020
Loading rakes Unloaded MT
rakes MT
July rakes 4.6 MT
Calculated Line Capacity – 16 trains
Demonstrated trains
Additional Line Capacity Trains with loops at Bansara and Tihiri

28. WAY AHEAD
15% Electronic Interlocking Systems in IR (880/5944 block stations)
Multiple Vendors
Requirement for Networking Standards for interoperability for Centralised Monitoring & Opeartion

29. Dhamra Line – CTC Working
Any Questions?

30. Dhamra Line – CTC Working
Thank You