| Monitoring and Control of processes are
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| | the entire power system with the help of
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| implemented using SCADA systems. SCADA is
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| | various sub-station oriented displays in
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| an acronym for Supervisory Control and
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| | several computer consoles. The
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| Data Acquisition. Variables of a process
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| | sub-station oriented displays in several
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| are constantly monitored and processed
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| | computer consoles. The sub-station level
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| for computation of various parameters for
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| | data acquisition such as status of CB's,
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| issue of control commands, if necessary,
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| | disconnectors, / isolators and analog
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| in both open and closed loop manner with
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| | values such as MW, MVAR, Hz, KV, Amps
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| the help of a combination of
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| | etc. are first captured with the help of
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| electromechanical and digital elements
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| | respective interfacing elements in the
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| equipments.The implementation of fairly
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| | RTU.Master station scans the RTUs either
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| large SCADA system used in applications
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| | on cyclic fashion or on poll-by-exception
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| like power system monitoring and control,
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| | method. Depending on the communication
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| involves a centralized process computer
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| | channel that exists between Master and
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| connected to a large number of Remote
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| | RTU's, the exchange of data between the
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| Terminal Units (RTUs) which are
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| | Master and RTUs are implemented using
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| geographically distributed in vast areas,
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| | either analogue or digital communication
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| using efficient communication channels.
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| | media. The Characteristics of transfer of
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| The process computer acquires
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| | data between Master and the RTUs is
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| intelligence from these remote terminal
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| | typical of a Master/ Slave protocol, in a
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| units and does the necessary processing
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| | SCADA system. There exists a variety of
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| internally with the help of numerous
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| | different types of Master/ Slave
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| application software programs that are
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| | protocols that are implemented in a SCADA
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| executed in the computer either on demand
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| | system. Most of these protocols in the
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| basis.The Power system Dispatchers are
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| | past were only supporting analog
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| responsible for the dispatch operations
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| | communication channels. However, with the
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| like, issue of supervisory controls to
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| | advent digital communication technology,
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| either open or close Circuit Breakers
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| | getting migrated to digital SCADA
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| (C.Bs) in substation, lower or raise the
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| | protocols like IEC60870-104 protocols
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| scheduled interchange of power with the
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| | supported using digital communication
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| neighboring power systems, to maintain
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| | media. This would also support an RTU
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| system parameters like voltage,
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| | talking to more than one Master
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| frequency, power flow, to monitor and
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| | Station.Praise is the Professor and Head
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| analyze various system alarms as well as
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| | of the Dept of
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| to take appropriate actions against each
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| | Information Technology of
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| alarm etc.In order to enable the
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| | Calicut University. with more than 25
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| Dispatchers to do these functions, they
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| | years of Professional Experience in
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| are provided with a complete snap-shot of
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| | University of Calicut.
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