Implementation of Protective Device for Lineman Protection in Real Time Operation

this paper is proposed to control an electrical switch with the assistance of OTP based password. A keypad is associated with the task to enter the secret password. During the electric line fixing Lethal electrical accidents to the lineman are increasing because of the lack of communication between the linemen working staff and the electric substation officers. This proposed framework gives an answer, which can guarantee the wellbeing of the lineman. Since the control to turn on/off lies with the lineman. So there is the arrangement in the system and a password is required to operate the electrical switch i.e. on and off. The lineman has to carry the RF-ID tag that will be inserted into RF-ID reader to generate a one-time password. OTP will be received by the lineman. After inserting correct OTP Lineman will trip the supply and after securely repairing it, again he can turn the supply for respective phase. A microcontroller from ARDUINO family is used in the framework for complete operation and control. The microcontroller is interfaced with the matrix keypad to enter the secret one time password. The entered secret OTP is compared with the password stored in the microcontroller’s Read-only memory. If OTP matches with the stored one than only electrical switches can be turned on or off otherwise it will say the wrong password. A light emitting diode is used to intimate the activation and deactivation of the electrical switch. Because of the use of EEPROM, the user does not have to remember the secret password. The microcontroller is interfaced with the Global system of mobile (GSM) to monitor the operation by lineman by the means of SMS. When lineman trip the supply a message will be sent to a higher authority about the Activation and deactivation of the electrical switch.