PROJECT:- SUBSTATION GSM

ABSTRACT:



GSM (Global System for Mobile communications: originally from Group Special Mobile) is the most popular standard for mobile phones in the world. Its promoter, the GSM Association, estimates that 80% of the global mobile market uses the standard. GSM is used by over 3 billion people across more than 212 countries and territories. Its ubiquity makes international roaming very common between mobile phone operators, enabling subscribers to use their phones in many parts of the world. GSM differs from its predecessors in that both signaling and speech channels are digital.

Here we introduces a new system which is very much applicable in the field of electrical power transmission and thus in our day today life. The remote controlling of substation machines is possible with this system.

Load shedding is very much common in our state. The proper switching of electrical machines mainly transformers are possible with this system via SMS from the mobile phones of the operators.




The functions of distribution transformers for the corresponding areas are controlled by finger touch remotely in accurate manner. Proper timing and accurate functioning are the main advantages of this system.


WORKING PRINCIPLE:

Mobile phone and GSM modem are the main part of this project. The SMS from the mobile phone is detected by the GSM modem. There are unique SMS codes are assigned with the mobile phone for the control of different electrical machines (transformers).

These different codes are detected by the GSM modem and it communicates with the MCU either directly or through the computer.

The MCU received the digital data from the modem for particular operations, According to the stored program inside it. The information from the modem are as per the SMS from the mobile phone.

The machines are connected with the relays .the functions of these relays are controlled by the MCU through relay interfacing buffer circuits.

Thus the distribution transformers are controlled by the messages from the mobile phone of the operators.

MCU-micro controller unit

BLOCK DIAGRAM



CIRCUIT DIAGRAM



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