3. Overview
SBOQ- Standard Bill of
Quantities
TRD- Traction Distribution
TPC- Traction Power
Control
TSS- Traction Substation
OHE- Over Head
Equipments
Mast(Poles)- used for
Cantilever Assembly
7. Reviewed Sanctioned Estimate for Power Supply &
Distribution and Traction Third Rail for Kavi
Subhash(New Garia) to VIP Road Section on Kavi
Subhash(New Garia)- Biman Bandar(Airport)
Corridor for Kolkata Metro Project
9. Some Projects Under
RVNL
Electrification- Rani-
Palampur(RE/High Rise)
Metro- Kolkata Metro
Joka- BBD bagh(16.72 km)
New Garia- Airport(32 km)
Bara nagar- Barrackpur(12.5
km)[Focus on the above both
right now.]
Others(GEW)
Rishikesh- Karnaprayag= New
Line
Lucknow- Pilibhit= Gauge
conversion
Ahmedabad- Botad= Gauge
Conversion
Palampur- Samakhiali= Doubling
10. Interruptor No
Relay provided
with this
Isolator Manual
motor by TPC
Circuit
Breaker(C
.B.)
ABCB(in
GSS)
BOCB(Bul
k Oil)
MOCB(Me
tal Oil)
SF6(Gas)
VCB(Vacu
um)
SCADA
Supervision
Control and Data
Acquisition-
Centralised Control
System(For
ON/OFF)
SCADA System
reads the
measured flow and
level, and sends
the setpoints to the
PCCs.
E&M Design
(ASS-
Auxillary
Substation)
Transformer
Sizing
DG Sizing,
UPS System
Fault
Calculation
Lighting
Cable Sizing
HVAC
Fire Action
Fire Alarm &
Detection
Fire Fighting
11. Transport Networks
Rail Network:
12 rail alignments
105 suburban passenger railway stations(with an
avg. interval of 2-2.5 km)
Important Terminals: Sealdah and Howrah
Administered by Eastern Railway and SE Railway
Circular Rail
Total Length: 34 km
16 km over the existing suburban route of Majerhat-
Ballygunge- Dum Dum via Kankgachi Chord of
Sealdah division
18 km over Old Calcutta Port Trust Railways and
Eastern Railway’s Chitpur Yard
Suburban Railway
10 rail alignments of 1230 km length
Metro System
Extension from Dum Dum to Naopara- Metro
Railway
East West Corridor(from Howrah Maidan upto Salt
Lake Sector V)- KMRCL
Naopara to Dashineshwar- RVNL
Naopara to Barasat- Metro Railway
Study of Final Detailed Project Report for
New Metro Corridors in
Kolkata(December- 2012)- Joka to
Majerhat(Phase- I)
1
12. System Selection
Gauge Selection
Broad Gauge has been adopted for proposed
Kolkata Metro corridors
Transport System Capacity
Design Capacity of about 42,000 passengers per
hour per direction
Train Length upto 8 coaches
Traction System Selection
750V dc third rail in Kolkata Metro
1500V dc catenary in Mumbai suburban of
Central and Western Railways
25kV ac catenary in Delhi Metro and Indian
Railways
Signaling and Tele-communication
DMRC, BMRCL, HYD. METRO, JMRC
CATC- Continuous Automatic Control System:
ATS- Automatic Train Supervision
ATP- Automatic Train Protection
Computer based interlocking
AFTC- Audio Frequency Track Circuits
Train Operations
COMPOSITION
MC: Motor Coach
DTC: Driving Trailer Coach
TC: Non- Driving Trailer Coach
DTC-MC-TC-MC-MC-TC-MC-DTC
CAPACITY: 2600(430- Sitting & 2180-
Standing) 2
13. POWER SUPPLY SYSTEM
Overview of existing PSS
Kolkata Metro receives power from
CESC at 33kV
PS is controlled through SCADA system
Need for high reliability of power
supply
Requirement of electric power supply
For running trains
For station services(lighting, ventilation,
lifts, escalators
For depots and maintenance of
infrastructure
Designed Load estimation
8 car rake- headway of 150 seconds
Specific Energy Consumption-
80kW/1000 GTKM
Elevated/at grade station load(initially)-
250kW
Underground Station load-
1500kW(initially)
Depot auxiliary load- 1500kW(initially)
3
14. Selection of Traction System
750V dc third rail system
1500V dc overhead catenary system
25kV ac overhead catenary system
Traction Power demand
estimation Year
2015 2025 2035
Train
Composition
8 car 8 car 8 car
Headway 8.6 min 7.5 min 6 min
No. of train/hr. 7 nos. 8 nos. 10 nos.
Section(Corridor) Year
2015 2025 2035
Joka-
Majerhat
section
(Joka-BBD
Bagh
Traction 4.12 4.71 5.89
Auxiliar
y
3.06 3.53 4.00
Total 7.18 8.24 9.89
Net demand considering
5% distribution losses
7.54 8.65 10.39
Train Operation Plan
Power Demand Estimation (MVA)
4
15. Section
(Corridor)
Grid sub-
station (input
source)
Location of
RSS
Approx.
Length
of 33kV
cables
Joka-
Majerhat
(Joka-BBD
Bagh)
Joka sub-
station
(WBSEDCL)
Joka Station 1 km,
(Double
circuit)
Majerhat sub-
station
(CESC)
Majerhat
Station
1 km,
(Double
Circuit)
Power Supply Source
Power Supply Distribution
Arrangement
33 kV drawn from two RSSs via
Joka and Majerhat distributed
through 33 kV ring main cable
network for feeding to traction as well
as auxiliary loads.
Elimination of intermediate voltage grade of
11kV
Advantages
Improved Reliability
Reduced Space Requirement
Reduced Operational Cost
Improved Voltage Regulation 5
16. MAJOR POWER SUPPLY EQUIPMENTS/SYSTEMS
Traction Substations(33kV/780V dc)
Traction Substation converter for energy recovery
Third Rail
Made of composite Aluminum Steel
Switch Gear
GIS(Gas Insulated Switch gear)
Rectifier HSCB (High Speed Circuit Breaker)
Feeder HSCB
Cables
33kV cable network
DC cable between rectifier to rectifier HSCB
DC cable from TSS to third rail
Auxiliary Power Supply and Emergency Backup
Auxiliary supply arrangements for stations and
depot(ASS)
Two dry type cast resin transformers(33/0.415kV) of
500kVA & 2500kVA
Standby Power Supply
Standby DG set of 200kVA
SCADA SYSTEM
Receiving, traction and auxiliary supply of power
supply shall be monitored and controlled from a
centralized operation Control centre (OCC) through
SCADA system.
6
17. E & M SYSTEM
Design Criteria
System Voltage: 4/5V 3 phase 4
wires/240V 1 phase 2 wires, 50 Hz
Ambient Temp.: 40˚C
Demand Factor: 80%
Load Power Factor: 0.95
Voltage Drop(Final Circuit): 5%
Colour Code
For Cable and Busbar-
Phase A: Red
Phase B: Yellow
Phase C: Blue
Neutral: Black
Ground: Green or Yellow Strip Green
Emergency Lighting Cable: Orange
Standards, Codes and Regulations
ASME American Society of Mech. Engrs.(USA)
ASTM American Society of Testing Materials
IS/BIS Bureau of Indian Standards
BS British Standard
EA The Electricity Act, 2008
EN European Norms
IEC International Electro-Technical Commission
IS Indian Standards
ISO International Organization for
Standardization
NBC National building Code of India, 2008
NEC National Electrical Code
NEMA National Electrical Manufacturers
7
18. Low Voltage Power Distribution System
Transformers and Cables
Two dry type cast resin transformers(33/0.415kV) of 500kVA & 2500kVA
IEC60502
IEC60331 and BS6387- Fire resistant cables(for safety purposes)
Low Voltage Switchboards
Over Current Protection
Earth Fault Protection
Under Voltage and Over Voltage Protection
Voltmeter and Selector Switch
Ammeter and Selector Switch
Indicating Lamps
Digital meter for kW, kVA, kVAR and Power Factor meter
Power Factor Control
ACB Shunt trip
Auxiliary contacts for remote monitoring via E&M SCADA System
Lighting System
240V, Single Phase 50Hz Power Supply
Emergency Power Supply
Lift Operation
Essential Lighting
Signaling and Telecommunication
Fire Fighting System
Fare Collection System
E&M SCADA System
Microprocessor based distributed controllers interface directly with sensors,
actuators and environment delivery systems, i.e. HVAC units, electrical
system, Fire Alarm system, Fire Fighting System, and Plumbing & Drainage
System.
Remote Processing Units (RPU) required for interface with different stations.
A serial link communication network to allow data exchange between devices
in the system, i.e. Fire Alarm System, Fire Fighting System, Lifts and
Escalators, HVAC, Plumbing and Drainage. System, Lighting System, Low
Voltage Power Supply System, etc.
Marshalling Cabinets for terminating E&M SCADA interface monitor and
control signal wiring.
Associated Power & Control Cables.
8
21. Traction Power Control- NDLS
Control Office- NDLS
Traction Substation-
Chanakyapuri
Power System Installation-
NDLS
FIELD TRIPS
22. Control office where operation of
lines(power supply facilities) are
held with the help of SCADA
Traction Power
Control- NDLS
23. The arrival time and
the departure time of
a specific train at a
specific station is give
as a input with the
help of the received
feedback.
Trains moving on
Line no. 2 and Line
no. 3 can gain their
maximum speeds,
whereas loop 1 and
loop 4 are used near
the stations and the
trains are required
to slow down on
these lines.
Control Office-
NDLS
Mapping of the timings of
the specific trains is done
simultaneously and
automatically, resulting in
a graph/map which is
used to track a train.
Delhi-Ambala
Division
