18-09-2012, 10:58 AM
FUNCTIONAL REQUIREMENT SPECIFICATION FOR SCADA FOR RAILWAYS’ GENERAL ELECTRIC POWER SUPPLY AND BUILDING MANAGEMENT SYSTEM FOR LARGE STATIONS, ETC
[attachment=33915]
Foreword
On the Indian Railways (IR), remote supervision and control is well
established in the area of traction power supply. But in the case of general
electric power supply, supervision and control is largely manual. Here, the
word ‘general’ refers to non-traction i.e. other than traction power supply.
Introduction of automation and remote supervision/ control in general electric
power supply will help IR to conserve electric energy and manpower
resources; besides, this will bring about an overall improvement in the
management of non-traction power supply and the quality of electrical
services. It has therefore been decided to introduce remote supervision and
control in non-traction power supply as well.
Scope
It is envisaged that major locations will be provided with Supervisory Control
and Data Acquisition System (SCADA) and the same will cover the various
non-traction sub-stations and their respective distribution feeders. It is also
planned to introduce intelligent Building Management System (BMS) for
large stations, their associated service/ operational areas and other important
service buildings. Although the terms SCADA and BMS are often used
interchangeably, here they are referring to different things. Here, SCADA
relates to power supply system from incoming supply at sub-station down to
feeder level. BMS also relates to power supply but to a finer level of
granularity i.e. floors, blocks, rooms, important electrical loads of a building,
HVAC, etc.
Components of SCADA and BMS systems
Remote Terminal Units
Remote Terminal Units (RTU)s will be installed at the sub-stations and other
important locations for acquiring data from power system devices. In addition,
RTUs will also be used for direct control of devices from the Master station/
RCC. The RTU shall be capable of working with the relevant IEC 60870-5
family of protocols i.e. IEC 60870-5-101 (for direct serial data transmission
through permanent direct links) and IEC 60870-5-104 (for data transmission
between RTU and Master station/ RCC through TCP/IP). If there are any other
suitable protocols, the same can also be considered. The choice of protocol
will depend on considerations of lifecycle cost, interoperability with other
popular standards, freedom with regard to extensibility of the system, etc. The
telecommands, telesignals and measurands shall be discussed and finalized
during the interactive sessions with firms.
Communication Medium
The feasibility of using radio communication between RTUs and Master
station/ RCC needs to be examined. Only where this is not feasible, the
provision of copper cable or OFC will be considered. The essential
specification of routers, network switches and LAN extenders shall be laid
down.
Software
The software should be capable of working on latest version of MS Windows
or Linux operating system. There should be adequate protection against
intrusions and viruses. The software and its modules should cover the entire
system functionality. It should support the IEC 60870-5 family of standards,
including IEC 60870-5-101 and IEC 60870-5-104. The software should be
versatile and easily configurable. It should be suitable for all communication
media, including wireless.
Master Station
The master station/ RCC shall consist of latest MS Windows operating system
based SCADA software, running on server grade computers in dual-redundant
mode and MMI running on desktop PCs. All equipment required for
interconnection and smooth functioning shall form a part of Master station.
This shall include laptop for trouble-shooting, LCD projectors for providing
an enlarged view of the system in emergency situations, printers, suitable
furniture, etc. The Master station should have a flexible architecture so as to
support future extension in power supply infrastructure.
[attachment=33915]
Foreword
On the Indian Railways (IR), remote supervision and control is well
established in the area of traction power supply. But in the case of general
electric power supply, supervision and control is largely manual. Here, the
word ‘general’ refers to non-traction i.e. other than traction power supply.
Introduction of automation and remote supervision/ control in general electric
power supply will help IR to conserve electric energy and manpower
resources; besides, this will bring about an overall improvement in the
management of non-traction power supply and the quality of electrical
services. It has therefore been decided to introduce remote supervision and
control in non-traction power supply as well.
Scope
It is envisaged that major locations will be provided with Supervisory Control
and Data Acquisition System (SCADA) and the same will cover the various
non-traction sub-stations and their respective distribution feeders. It is also
planned to introduce intelligent Building Management System (BMS) for
large stations, their associated service/ operational areas and other important
service buildings. Although the terms SCADA and BMS are often used
interchangeably, here they are referring to different things. Here, SCADA
relates to power supply system from incoming supply at sub-station down to
feeder level. BMS also relates to power supply but to a finer level of
granularity i.e. floors, blocks, rooms, important electrical loads of a building,
HVAC, etc.
Components of SCADA and BMS systems
Remote Terminal Units
Remote Terminal Units (RTU)s will be installed at the sub-stations and other
important locations for acquiring data from power system devices. In addition,
RTUs will also be used for direct control of devices from the Master station/
RCC. The RTU shall be capable of working with the relevant IEC 60870-5
family of protocols i.e. IEC 60870-5-101 (for direct serial data transmission
through permanent direct links) and IEC 60870-5-104 (for data transmission
between RTU and Master station/ RCC through TCP/IP). If there are any other
suitable protocols, the same can also be considered. The choice of protocol
will depend on considerations of lifecycle cost, interoperability with other
popular standards, freedom with regard to extensibility of the system, etc. The
telecommands, telesignals and measurands shall be discussed and finalized
during the interactive sessions with firms.
Communication Medium
The feasibility of using radio communication between RTUs and Master
station/ RCC needs to be examined. Only where this is not feasible, the
provision of copper cable or OFC will be considered. The essential
specification of routers, network switches and LAN extenders shall be laid
down.
Software
The software should be capable of working on latest version of MS Windows
or Linux operating system. There should be adequate protection against
intrusions and viruses. The software and its modules should cover the entire
system functionality. It should support the IEC 60870-5 family of standards,
including IEC 60870-5-101 and IEC 60870-5-104. The software should be
versatile and easily configurable. It should be suitable for all communication
media, including wireless.
Master Station
The master station/ RCC shall consist of latest MS Windows operating system
based SCADA software, running on server grade computers in dual-redundant
mode and MMI running on desktop PCs. All equipment required for
interconnection and smooth functioning shall form a part of Master station.
This shall include laptop for trouble-shooting, LCD projectors for providing
an enlarged view of the system in emergency situations, printers, suitable
furniture, etc. The Master station should have a flexible architecture so as to
support future extension in power supply infrastructure.