What is SCADA in
Electrical Engineering?
Nowadays, internet and intelligentization become the
mainstream of the times, also in the electrical engineering field, computer control and automation system , like PLC, SCADA system, microcomputer protection device etc, play significant
role in engineering project and power system operation.
SCADA system is short for Supervisory Control and Data
Acquisition, it is a control system based on computer process control and dispatching automation system. By
monitoring and controlling equipments, SCADA system has the data acquisition,
equipment control, measure and parameters adjustment, monitor and control
system covering large geographical areas, and all kinds of signal alarm and
other functions.
The concept of SCADA is developed as a universal means of
remote access to a variety of local control modules. The systems are mostly
used for the implementation of monitoring and control system of an equipment or
a plant in several industries, such as power plants, water and waste control
etc.
Components of SCADA Systems
1, Supervisory computers
Supervisory computers is the core part of SCADA system,
it works by gathering data on the process and sending control commands to the
process.
2, Remote terminal units (RTUs)
Remote terminal units, RTUs for short, it connects to
sensors and actuators in the process, covering the signals to digital data and
sending digital data to the supervisory system.
3, Programmable logic controllers (PLCs)
Programmable logic controllers, PLCs for short, same way
like RTUs, it’s also connected to sensors and actuators in the process, usually
used in place of RTUs as field devices. Cause PLC has more sophisticated embedded
control capabilities, and more economical, versatile, flexible and configurable
than special-puposed RTUs.
4, Human-machine interface (HMI)
The human-machine interface, HMI for short, presents process
data and plant information to a human operator. It is regards as the operator
window of the supervisory system, the human operators monitor and control the
process through HMI.
5, Communication infrastructure
The communication infrastructure provides connectivity to
the supervisory system to the RTUs and PLCs. It’s kind of bridge for data among
supervisory computer, the field data interface devices and control units.
Application of Scada Systems for Electric
Engineering Project
Scada system is type of automation system
for electrical distribution, it provides the functions, like real-time view
into operations, data tending and logging, maintaining desired voltages,
currents and power factors, generating alarms etc to maximize the power
distribution system efficiency. It is able to perform automatic monitoring,
protecting and controlling to varies of equipments in electrical engineering
items. The SCADA function could have substation control, feeder control and end
user load control etc.
If you want to learn more about SCADA or
need the system for your project, please leave us message or contact HNAC(marketing@cshnac.com).
