POWER GRID CONTROL SYSTEM USING GSM MODEM

Title of the project: Power Grid Control System Using GSM Modem
Domain: Embedded Systems Design, Electrical
Software: Embedded C, Keil, Proload
Microcontroller: AT89S52
Power Supply: +5V, 500mA Regulated Power Supply
Display: LED 5mm, 16 X 2 LCD
Crystal: 11.0592MHz
Communication Device: GSM Modem
Software: Keil, Proload
Applications: Electricity Boards, Power Stations




ABSTARCT
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. Thus, to overcome the above drawbacks, we are using one of the wireless communication technique i.e., GSM (Global System for Mobile communications) 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 (Global Systems for Mobile Communication) 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 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 MCU. The MCU verify for authentication of the number and, if the number is authorised, grid control will be taken place, 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


Advantages:
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.
Applications:
Process Industries, Power Grids