PROJECT PROFILE
SUPERVISORY CONTROL SYSTEM
FOR NORTH-SOUTH, EAST-WEST MRT LINES, SINGAPORE
CUSTOMER
Land Transport Authority of Singapore
(previously known as MRTC Singapore)
GENERAL
Singapore Technologies Electronics Ltd, together
with its French consortium partner, was awarded
the contract in 1984 to provide a Supervisory
Control System (SCS) for the North-South,
East-West (N-S/E-W) Mass Rapid Transit (MRT)
Lines.
The N-S/E-W lines form the backbone of
Singapore's rail transportation system. Covering a
total route length of 83km and 48 stations, the
MRT system transports over one million
passengers daily.
The SCS was designed to enable the railway to
operate smoothly and efficiently while ensuring
the best conditions for safety and comfort.
The system provides facilities for integrated,
centralized and local control and supervision of
Electrical & Mechanical (E&M) sub-systems
remotely located at stations, depots, tunnels and
etc.
The completion of this milestone project is
testimony to ST Elect's capability in offering
turnkey solutions on an integrated platform for rail
systems.
It further underscores ST Elect's strength and
ability to take on and successfully complete large
and complex electronic engineering projects.
N12 Yishun
N11 Khatib
N10 Yio Chu Kang
N9 Ang Mo Kio
N8 Bishan
N7 Braddell
N6 Toa Payoh
B1 Choa Chu Kang
W12 Boon Lay
W11 Lakeside
E11 Tampines
N4 Newton
B3 Bukit Batok
W10 Chinese Garden
W9 Jurong East
W8 Clementi
E12 Pasir Ris
N5 Novena
B2 Bukit Gombak
N3 Orchard
N2 Somerset
N1 Dhoby Ghaut
W7 Buona Vista
W6 Commonwealth
W5 Queenstown
E10 Simei
E9 Tanah Merah
E6 Eunos
E5 Paya LebarE8 Bedok
E4 Aljunied E7 Kembangan
E3 Kallang
E2 Lavender
E1 Bugis
C2 City Hall
W4 Redhill
W3 Tiong Bahru
W2 Outram Park
W1 Tanjong Pagar
C1 Raffles Place
Phase I & IA (1987/ 88)
M1 Marina Bay
Phase II (1990)
North Line
South Line
East Line
West Line
It is responsible for the overall
supervision of the entire E&M
subsystems of the Mass Rapid
Transit Network. It is equipped with
a hot standby computer system,
consoles, programmer terminals,
printers, workstation operators'
dialogue terminals for System
Controller,
Power
Controller,
Environmental Control System and
Tunnel Ventilation System and
Information Controller.
SYSTEM OVERVIEW
The SCS system is configured using
hierarchical computer architecture.
The Master computer is configured
with hot standby to improve on the
overall SCS System Availability.
Data acquired from the RTU are
updated in real-time on both the
master and hot-standby computer
allowing the seamless fail-over from
the Master Computer.
b) Data Transmission
(DTS)
To allow for the further autonomy of
operations, the control intelligence is
distributed or decentralized to the
Remote Terminal Unit (RTU)
located at the Stations, On-line
Stations and Depot. The RTU is
responsible
for
the
SCADA
acquisition and control functionality
and to manage all interfaces at the
Plant level.
System
The DTS between the Plant
Management System (PMS RTUs)
and the CCS is via a dedicated PCM
channel. A modem in the RTU will
be connected to the PCM channel to
provide data communication for data
acquired from the RTU and
command sent from the Master
Computer in the Operations Control
Centre (OCC).
SYSTEM CONFIGURATION
The SCS is structured into three
levels consisting of the following
components. These are:
c) Plant Management
(PMS)
FUNCTIONS PERFORMED
• Basic Remote Control and
Monitoring
Time Schedule Program
Reaction Program
Fault Statistics
Instruction List
Tunnel Congestion and
Emergency
Inhibition/Validation Avalanche
Filtering Report Generation
Trending
Reaction Program
Time Keeper
Decision Support
Peak load Supervision and load
shedding.
•
•
•
•
•
•
•
•
•
System
SCOPE OF WORK
The PMS consisting of the RTU is
responsible for data acquisition and
executing of control commands sent
from the CCS at the OCC.
a) Central Computer System
(CCS)
It is responsible to manage all serial
and hardwired interfaces at the
Plant levels in the Passenger
Stations, On-Line Substations and
Depots.
The CCS is located at the Mass
Rapid Transit Operations Control
Centre.
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Design
Supply
Project Management
Installation
Testing & Commissioning
Warranty
CONTROL ROOM
Printers
Information
Desk
System Controller
Console
Power Supervisor
Console
ECS Console
Color Graphic
Printer
Power
System
Fire
Safety
Alarm
E.C.S
Mimic Controller
EQUIPMENT ROOM
132MB
y
67MB
From Computer A
From Computer B
Central
Computer A
9.5MB
Disk A
Central
Computer B
9.5MB
Watchdog
132MB
y
67MB
Disk B
Programmer’s
Console
Programmer’s
Console
Modem 1
Modem 8
Modem
CTS Interface OCC/ Local
STATION
SCR
Modem
Modem
Modem
Modem
RTU 1
RTU 7
RTU 1
RTU 8
Station 7
Subsystem
Subsystem
1
N
Station 1
Subsystem
Subsystem
1
N
Station 8
Subsystem
Subsystem
1
N
Station 1
Subsystem
Subsystem
1
N
Group No 1 of 7 RTU (Part of Phase I/ IA of 30 RTU)
SCR
SCR
Group No 8 of 8 RTU (Part of Phase IIA/ IIB of 29 RTU)
System Configuration Diagram
SINGAPORE TECHNOLOGIES ELECTRONICS LIMITED
24 ANG MO KIO STREET 65 SINGAPORE 569061
TEL: (65) 6481 8888 FAX: (65) 6482 1803
WEBSITE: www.stee.stengg.com
(Regn. No.: 196900084E )
SCR
Modem
MMS
Provision for
Connection to
Maintenance
Management
System