today's economic environment, SCADA requirements in
the petroleum, Oil & Gas industries are changing
at a rapid pace. Clearly, the need for reliable, centralized
control and monitoring is more important than ever.
The drive to reduce costs, increase system reliability
and improve throughput demands effective centralized
control. There is also a renewed interest in operational
Ten years ago SSGC embarked on a major mission to
use technology as a strategic assets and embarked
on the use of open-architecture, distributed-intelligence
and platform independent SCADA systems.
In the first phase of this effort this effort the
Transmission network of SSGC saw the use of Modbus
protocol based PLCs running AGA-3/7 analysis for both
flow and compressor performance monitoring. Block
valve control was implemented shortly thereafter.
LAN based redundant Host systems at Karachi and Shikarpur
provided both online and historical data.
In the second phase SSGC is now undertaking a distribution
SCADA systems that will provide for custody Transfer,
Load Forecasting, Gas Analysis and other Gas Management
In the execution of the Distribution SCADA system
the Transmission and Distribution SCADA systems will
be integrated. This will facilitate a seamless exchange
of data between the different parts of SSGC resulting
in streamlined reporting and higher efficiency.