• Kishore MP
• Rangma Tiwari

The research presents a model of a Microcontroller based differential relay for protection of a transformer with multiple auto close settings. The differential Protection scheme which utilizes the current difference between terminals of the transformer to detect faults is employed utilizing Arduino and Current sensors. Arduino is used to detect the abnormal condition and send the trip signal to electromechanical relay. The circuit is designed in Proteus and results were analyzed in MATLAB. Primary Current of transformer v/s Time plot was found satisfactory. The additions of auto close setting in the relay increase its application to standby transformers and Bus Couplers. A hardware prototype of the same was created. Simulation of a three-phase transformer was also performed on Proteus software.

The research presents a model of a Microcontroller based differential relay for protection of a transformer with multiple auto close settings. The differential Protection scheme which utilizes the current difference between terminals of the transformer to detect faults is employed utilizing Arduino and Current sensors. Arduino is used to detect the abnormal condition and send the trip signal to electromechanical relay. The circuit is designed in Proteus and results were analyzed in MATLAB. Primary Current of transformer v/s Time plot was found satisfactory. The additions of auto close setting in the relay increase its application to standby transformers and Bus Couplers. A hardware prototype of the same was created. Simulation of a three-phase transformer was also performed on Proteus software.

"ANALYSIS AND IMPLEMENTATION OF 3 LEVEL DC TO DC CONVERTERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 1, page no.1114-1119, January-2021, Available :http://www.jetir.org/papers/JETIR2101140.pdf

"ANALYSIS AND IMPLEMENTATION OF 3 LEVEL DC TO DC CONVERTERS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 1, page no. pp1114-1119, January-2021, Available at : http://www.jetir.org/papers/JETIR2101140.pdf