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Advantages of SCADA System | disadvantages of SCADA System

This page covers advantages and disadvantages of SCADA System. It mentions SCADA advantages or benefits and SCADA disadvantages or drawbacks. It provides link on SCADA tutorial.

What is SCADA?

Introduction:
The full form of SCADA is Supervisory Control and Data Acquisition. As the name suggests it is not the fully control system. It focuses on supervisory level.

Following are the functions of SCADA system in general.
• It is computer system which collects and analyzes real time data with the help of sensors.
• The system is used for monitoring and control operations of a plant or equipments.

scada basics

The SCADA system is composed of three main systems viz. MTU (Master Terminal Unit), RTU (Remote Terminal Units) & Human Machine Interface (HMI). Sensors are installed at various locations spread across the earth for various functions. Refer SCADA basic tutorial>>.

Benefits or advantages of SCADA

Following are the benefits or advantages of SCADA:
➨The system provide facility to store large amount of data.
➨The data can be displayed in various formats as per user requirements.
➨It provides interface to connect thousands of sensors across wide region for various monitoring and controlling operations.
➨It is possible to obtain real data simulations with the help of operators.
➨Many types of data can be gathered from RTUs (Remote Terminal Units) connected with the master unit.
➨With the advanced protocols and application softwares, the data can be monitored from anywhere and not just from local site.
➨The redundancy of units are incorporated in the SCADA system in order to have backup in the event of faults or failures. This makes system more robust.
➨It is fast in obtaining response.
➨It is scalable and flexible in adding additional resources.
➨It is used in wide industries and departments including telecommunications, energy, transportation, oil & gas, water, military, meteorological etc.

Drawbacks or disadvantages of SCADA

Following are the disadvantages of SCADA:
➨PLC based SCADA system is complex in terms of hardware units and dependent modules.
➨As the system is complex, it requires skilled operators, analysts and programmers to maintain SCADA system.
➨Installation costs are higher.
➨The system increases unemployment rates.
➨The system supports use of restricted softwares and hardware equipments.



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