@thesis{thesis,
		author={Pujotomo  Isworo and SUPRAYITNO  DODIK},
		title ={STUDI KERJA RELAI DIFERENSIAL TERHADAP PENGARUH PERUBAHAN VEKTOR GRUP TRANSFORMATOR DAYA 11,5/150 kV},
		year={2015},
		url={http://156.67.221.169/1187/},
		abstract={The power transformer is one of important tool in the power plant. If there is any damage of the power transformer and we must be replace it, at least replacement has the same spesification. With consideration of time, and the electricity supply must be filled, if the transformer can be replace with the same spesification but have different vektor group, and that is the best way to get transformer replacement in that time. In this paper the transformer assumtion stand-alone (isoalted). Because the power transformer working on parallel, if we repalce it with different vektor group it does not eligible parallel work. In this paper discuss the effect of the replacement of power transformer wih different vektor group to the relay differential work. Additionally, it will discuss the solving problem if the differential relay work to phase shifting because of the replacement of power transformer with different vektor group.}
		}