@thesis{thesis, author={Erlina Erlina and Kajra Rasikhah Ghinandaputri}, title ={ANALISIS KONTINGENSI N-1 IBT 275/150kV 90MVA GITET WOTU LINE BACKBONE SULAWESI TENGGARA}, year={2023}, url={http://156.67.221.169/5742/}, abstract={The electric power system in general includes power plants, power transmission lines, substations to the electricity distribution network which in real time operational management requires schemes to carry out electrical system rescue in the event of an outage condition, both distribution system outage and system outage. generation. To predict the failures of the distribution system and generation system, it is necessary to analyze the contingency so that criterion N-1 can be met. As with the electricity of the Southeast Sulawesi Sub System, which is partially supplied by the Inter Bus Transformer Wotu 275/150kV 90MVA, a contingency analysis needs to be carried out to mitigate the widespread impact of this contingency. Contingency is an event caused by the failure or outage of 1 or more generators and/or transmissions. In terms of this analysis was carried out to photograph the condition of the 275/150kV 90MVA Wotu Inter Bus Transformer if an outage occurs to one of the generating units in the Southeast Sulawesi Sub-System. The analysis used in this study was to use the DIgSILENT Power Factory 15.1 software with post-contingency N-1 results with the outage case of one large generator unit at PLTU DSSP Moramo, an increase in the load of the Inter Bus Transformer 90MVA Wotu transformer, an increase of 34.1% from before the contingency by 78.6% or 70.10 MW to 138.1% or 123.9 MW} }