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SUPERVISORY CONTROL

AND DATA ACQUISITION

PRESENTED TO:

SIR ANWAR SAHITO

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PRESENTATION FLOW

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INTRODUCTION

TO

SCADA

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INTRODUCTION TO SCADA

A system that collects data from various sensors at a factory, plant or

in other remote locations and then sends this data to a central

computer which then manages and controls the data .

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It generally refers to the computer systems that monitor and controls following

process

INTRODUCTION TO SCADA

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INTRODUCTION TO SCADA

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SCADA

IN

POWER SYSTEM

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SCADA

Master

Station

SubstationRTU

Substation SCADA

Communication Channel

SubstationRTU

Substation SCADA

SCADA IN POWER SYSTEM

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SCADA IN POWER SYSTEM

3. Power System Control

2. Power System Supervision

1. Data Acquisition

AS FAR AS POWER SYSTEM IS CONCERNED SCADA CONSISTSOF 3 MAJOR PROCESSES.

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DATA ACQUISITION

It is the process of collecting data from the equipment through RTUs.

Data includes meter reading and equipment status that transmit tocontrol operator through communication media in such a way that a

control room operator can make supervisory decisions on it.

SCADA IN POWER SYSTEM

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POWER SYSTEM SUPERVISION

Power system supervision is carried out by the operator throughacquired data from data acquisition process.

SCADA IN POWER SYSTEM

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POWER SYSTEM CONTROL

It refers to send signals to device in order to operate the instrumentation

and control (I & C).For example: Closing and tripping of switch gears, tap changing of

transformers etc

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SCADA IN POWER SYSTEM

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MASTER STATION

FUNCTIONS

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MASTER STATION FUNCTIONALITY

DATA DISPLAY

CONTROL OF PRODUCTION

DATA LOGGING

ALARM

DATA ACQUISITION

MONTORING

MASTER STATION FUNCTIONALITY OF SCADA IN POWERSYSTEM INCLUDES,

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MONTORING

Master station monitors overall power system behavior. It sends andreceives signal to and from RTUs and thus handling a system effectively.

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DATA ACQUISITION

Data acquisition is accomplishes by means of CTs, PTs, transducers etc. Inshort we can say Ability to get various information from the field by

some means.

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ALARM

SCADA system process the collected data and alerts the control center tooperate immediately if an alarm signal is detected.

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DATA LOGGING

Data logging is performed on cyclic basis. Data logging is initiated if anydata changes. For E.g. if certain file size, time period is reached then data

will be overwritten.

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CONTROL OF PRODUCTION

Control of production is accomplishes by mean of AGS (automaticgeneration control) in order to make the system frequency within a safe

limit.

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DATA DISPLAY

For display purpose CRT is used in control room. It provides theinformation to the operator about system parameters whenever he

wants.

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SUB-SYSTEM

OFSCADA

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SUB-SYSTEM OF SCADA SYSTEM

Sub-system of SCADA in power system includes,

1. Human-Machine Interface

2. Remote Terminal Units

3. Programmable LogicController

4. Communication infrastructure

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SUB-SYSTEM OF SCADA SYSTEM

HUMAN-MACHINE INTERFACE

Human-MachineInterface is the apparatus which presents process datato a human operator, and through this, the human operator monitors and

controls the process.

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SUB-SYSTEM OF SCADA SYSTEM

REMOTE TERMINAL UNITS

Remote Terminal Units connecting to sensors in the process,

converting sensor signals to digital data and sending digital data to thesupervisory system.

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SUB-SYSTEM OF SCADA SYSTEM

PROGRAMMABLE LOGIC CONTROLLER

Programmable Logic Controller used as field devices because they aremore economical, versatile, flexible, and configurable than special-purpose RTUs.

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SUB-SYSTEM OF SCADA SYSTEM

COMMUNICATION INFRASTRUCTURE

Communication infrastructure connecting the supervisory system to theRemote Terminal Units. It could be satellite communication or microwavelink etc.

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USES

OFSCADA SYSTEM

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USES OF SCADA SYSTEM

Manufacturing Department

Engineering Department

EnterpriseI

nformation

Maintenance Department

Quality Department

Production Department

SCADA SYSTEM USED IN VARIOUS DEPARTMENT SUCH AS,

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BENEFITS

OFSCADA SYSTEM

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BENEFITS OF SCADA SYSTEM

Automated Operations With Real Time Control

Data Management (Engineering And Operations)

Protection Against Terrorism/Vandalism-alarm

Long Distance Training

Long Distance Monitoring

BENEFITS OF SCADA SYSTEM INCLUDES,

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CONCLUSIONS

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CONCLUSIONS

And Finally Various Applications

Are Less Expensive Than DCS, But Offer Different Functionality Than DCS

But System Wide Configuration Tools Are Needed

More Record Or Device Oriented Configuration

More Interfaces And Efficient Storage

SCADA IS A CONTROL SYSTEM WITH

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LOGO