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Shubhani ShuklaElectronics & Communication
Shobhit University
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What is SCADA..??y SCADA is Supervisory Control and Data
Acquisition real
time industrial process control systems used to centrally
monitor and control remote or local industrial equipment
such
as motors, valves, pumps, relays, sensors, etc.
y SCADA is used to control chemical plant processes, oil and
gas
pipelines, electrical generation and transmission equipment,
manufacturing facilities, water purification and
distribution
infrastructure, etc.
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Objectivey To study the basic design parameter for 1x6 MW
Captive
power plant using scada.
y Describe typical architecture of 1x6 MW captive power.
y To plan & build up adequate capacities in generation,
transmission and distribution of power through efficient
and cost effective means.
y To achieve utilization of existing equipments and assets
through renovation and modernization.
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List of ActivitiesActivity 1 2 3 4 5 6 7 8 9 10
Preparation ofproject
synopsis
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Function of Scada System in Captive Power
Planty Periodic Monitoring and logging of data such as
frequency,
voltage, current, etc. from electrical auxiliaries
y Classification of alarms in order of priority and
providing
annunciations at the time of events
y Displaying status of isolators, breakers and single
linediagram of various systems in switch yard
y Controlling circuit breakers and Isolators in switch yard
.
yData Acquisition
y Data Transmission
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Features of Scada System in Power Planty Real Time and
Historical Trend.y Alarmsy Recipe Managementy
Secu
rityy Device Connectivity
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Components of Scada Systemy Man Machine Interface (MMI):
Man Machine Interface is process and display units from where
the data is
process and displayed to the operator for monitoring and control
by
human. It is also called Human Machine Interface.y Remote
Terminal Units (RTU):
Remote Terminal Units are located at the process side of the
plant. They
are connected to the sensors in process and data is converted
from sensor
signal to digital data and sends to the Supervisory control. In
simple, RTU is
a micro controller and located at the remote side of the process
systemtheir objective is to collect data from process side and
deliver to
Supervisory control
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y Programmable Logic Controller (PLCs):
PLCs are more versatile than RTUs and does the job ofRTUs and
also
control the process when command receive from supervisory
control.
y Communication System:
These are the software protocols used for transferring the data
from the
supervisory control to RTU and vise-versa.
y Supervisory Controller:
This is the master controller of the System which receives the
data from
RTUs and PLCs, monitors the data, process the data display data
to
operator via HMI or MMI and gives command signal to RTUs and
PLCs to
carry out certain operation.
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Communication in Scada System
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SCADASecurityy The industry has generated a large base of
relatively insecure
systems, with chronic and pervasive vulnerabilities that
have
been observed during security assessments.
y Security for SCADA is typically five to ten years behind
typical
information technology (IT) systems
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Place /equipment and tools requiredy Computer for preparation of
reports and searching of
related study materials from internet.
yMS excel software to prepare cost module.
y Design handbook e.g. 'Electrical substation-Engineering &
Practice by Sunil S Rao.
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