POWER GRID CONTROL SYSTEM USING GSM MODEM
POWER GRID CONTROL.ppt (Size: 491 KB / Downloads: 40)
Nowadays there are various electronic equipment available for remote operation of grid control.
However, the main disadvantage of these systems is that they can be operated only from short ranges and also less reliable.
To overcome the above drawbacks, we are using one of the wireless communication technique i.e., GSM (Global System for Mobile communications).
GSM is a digital cellular communications system which has rapidly gained acceptance and market share worldwide.
The development of GSM is the first step towards a true personal communication system that will allow us to communication anywhere, anytime and with anyone.
GSM is vastly used because of its simplicity in both transmitter and receiver design, can operate at 900 or 1800MHZ band, faster , more reliable and globally network .
This project is designed for seven power grids.
8051 Microcontroller is the heart of the project.
A GSM modem is interfaced to microcontroller.
This modem receives the messages from control mobile and sends as input to microcontroller.
The microcontroller verify for authentication of the number and, if the number is authorized, grid control will be taken place.
And EEPROM is interfaced to this controller to save the grid position at every instant.
This grid position information will not be deleted even in power failure conditions.
3X4 keypad is interfaced to change the mobile number at any time.
16X2 LCD is interfaced to display user-required information.
In this project TRAIC is used as load controller (as a switch), MOC3021 used as a Triac driver.
GSM network operators have roaming facilities, user can often continue to use there mobile phones when they travel to other countries etc….
This project uses regulated 5v, 750mA power supply.
7805 and 7812 three terminal voltage regulators are used for voltage regulation.
Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12v step down transformer.
System can be monitored and controlled from any where.
Mobile number can be changed at any time.
Grid status will not be lost in power failure condition.
Scopes for Advancements:
This system is developed for mobile reporting application only. It also can be interfaced to computer system to record and process data base.
Process Industries, Power Grids
Hence by this project we can control power grid using wireless communication system i.e., Global system for mobile communications modem.