INTRODUCTION
Electrification of MYS Division started with electrification of MYS(Mysuru)-NHY(Naganahalli) double line section (21TKM) in Feb-2018 and electrification of MNGT Yard was completed by Feb-2019 by RE/SC Organization. Further it was extended up to Y-Yeliur by Railway Board orders for Jurisdiction Bifurcation in October-2019 (93TKM).
Electrification of JRU(Chikjajur)-RDG(Rayadurga) section of MYS Division was taken up by RVNL/Bellary in Jan-2020. In 1st Phase of this project, RDG(Rayadurga) – THKU(Thalaku) 53TKM was electrified and CRS was conducted on 30.06.2020.
The traction distribution branch is responsible for maintenance of power supply to 25 KV AC overhead equipment which gets power through sub-stations located en-route. The total Track kilometres electrified in MYS division is 143 TKM and power is fed through 02 TSS (at Yeliur and Bellary) and sectionalised with 2 SP and 2 SSP.
ACTIVITIES
- Maintenance of Traction Power Supply installations
- Maintenance of Traction Overhead equipment
- Supervisory Remote Control System
- Construction activities pertaining to this section
- Monitoring of Railway Electrification Works.
Electrified sections:
- Mysuru-Yeliur : 93TKM (MYS-SBC Side)
- Raydurga-Thallaku : 53TKM
Electrification under progress:
- Thallaku-Chitradurga
- Chitradurga-Chikjajur
Working of Electric Traction :
The Electric supply from the State Grid is availed at 220/132 KV, 2 Phase and is stepped down to 25 KV, Single Phase at the Traction sub-stations. This 25 KV single phase supply is fed to the overhead conductor system consisting of a grooved contact wire suspended from catenary wire by flexible droppers. There is a continuous sliding contact between the pantograph pan of the locomotive and the bottom of the contact wire. The pantograph of the locomotive when raised applies a pressure of 7.0 Kg/Cm² against the contact wire which ensures the continuous and smooth collection of current from the Over Head Conductor to the locomotive. The 25 KV supply is further stepped down and rectified and fed to the Traction Motors. The return current flows through the loco wheels to the Rails and form the Rails to the earthed terminal of the traction transformer thus completing the single phase electric circuit. As the rails are earthed, it is ensured that the potential of the return current, is not increased above the earth potential. This ensures that there is no electric hazard to the public coming in contact with electrified tracks. The speed variation of the locomotive is achieved by varying the input voltage to the traction motors.
Special Features of SCADA:
A interim Remote Control Centre(RCC) was set up in MYS HQ 09.08.2020 and was inaugurated by PCEE/SWR/UBL in presence of DRM/MYS and BOs.
All operations of Circuit Breakers, Interrupters etc., situated in the Sub-stations and Switching Stations over the length of Railway line can be remotely operated from the Divisional Control Office by simple commands through key board/mouse
- The status of different equipment and values of voltages and currents are continuously monitored and displayed on the video monitors attached to the operator workstations.
- Automatic fault isolation is done by SCADA system in case of faults on OHE
- All the operations of the TPC and events are automatically logged in the system.
- All the traction masts and structures are earthed properly so as to negate any possibility of electric shock due to any leakage of power. Sufficient clearances are maintained with earthed structures. A working clearance of two meters is maintained from the live OHE.
Some of the Safety Tips to be followed by "PUBLIC" to Safely travel in Electrified section are here under:
- Do not carry vertically long poles/ any other articles in the vicinity of overhead live conductors.
- Do not touch/ walk on Rails.
- Do not travel on roof of coaches and wagons, as overhead live conductors are fatal.
- Tress-passing in electrified station yards is strictly prohibited for your own safety.
- Do not project any metallic parts from Foot over bridge / Road over bridge towards live wires and conductors.
- Do not pour water from Road over bridges/ Foot over bridges on the overhead wires and conductors.
- Do not lean out from compartment while train is in motion.
- Do not travel on top of Road vehicles passing through Level Crossing Gates.
- Do not try to pass through Level Crossing Gates with consignments higher than the height gauge level.
- Do not forget that Overhead Traction wires are always live and dangerous.
Upcoming Electrification Work
·Mysuru-Chamarajanagar
·Mysuru-Hassan-Arsikere
·Hassan-Mangalore
·Birur-Talguppa
·Sampigae Road-Karjagi
·Kadur-Chikmangaluru
