This project is locating fault in a power distribution line is a complicated and severe problem in power system. This is designed with micro controller, GSM mobile, Driver circuit, control circuit interfaced with GSM modem. It is useful for remote monitoring and control of multiple stand-alone distribution transformers plants. In normal conditions, the system records and periodically reports the overall performances, whereas, in case of incorrect behaviours , it immediately informs the operators. Moreover, through appropriate instructions, users are able to modify some elements of the plant and the settings of the measurement system . In order to adapt the system to the specific operative conditions, several means of communications and plant configurations. The work described is a development of Microcontroller-based Protection of Electric Distribution system for the purpose of effective monitoring and sending information of distribution system. However, for a more general, flexible and cost-effective implementation, the remote communications are based on a powerful GSM networking is designed when the voltage through the line falls below a programmed voltage, an immediate indication is provided by the microcontroller through the GSM modem. The interfaced GSM modem will receive the signal and to send data from Distribution side to the substation and to the line patrol staffs as a message.
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