IJBTT

Over current Protection of Transmission Line using GSM and Arduino

	International Journal of Engineering Trends and Technology (IJETT)
	© 2017 by IJETT Journal
	Volume-50 Number-1
	Year of Publication : 2017
	Authors : Kunal Jagdale, A.Siddhartha Rao
	DOI :  10.14445/22315381/IJETT-V50P209

Citation 

Kunal Jagdale, A.Siddhartha Rao "Over current Protection of Transmission Line using GSM and Arduino", International Journal of Engineering Trends and Technology (IJETT), V50(1),53-57 August 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
This Project is about designing the controls of an Over current relay using a microcontroller. The relay is an electrical switch which operates depending upon the value of current through it. It works on the principle of electromagnetic induction to operate. When the current through the Over-current Relay rises or passes beyond a particular value then the relay operates to send a tripping signal to the circuit breaker. Microcontroller based relays have found their importance growing day-by-day since it is much more efficient in its working than the mechanical relay conventionally used. They have been observing a growing popularity because of its high speed of operation. In such type of relays, there are generally following components present responsible of its working which are: current transducer, a controller, current transformer and a circuit breaker. The microcontroller used in the relay provides much flexibility of operation through the use of above-mentioned components in the electrical system. A simple relay wouldn’t contain such characteristics. Microcontroller based relays use the controller to read the load current. The load current is read via a current transformer used in the circuit (C.T.), a current transducer and an Analog-to-Digital Converter i.e. the current is converted from Analog to Digital form and fed to one of the digital pins of the microcontroller. If the current is greater than the pickup value, then the relay is being sent a signal which then operates to send a tripping signal to the circuit breaker which then opens the circuit. IDMT characteristics of the relay can also be realized.

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Keywords
Over-Current, Microcontroller, Relay, Arduino.