Analysis of Performance Index in Transmission Expansion Planning of Sulawesi's Electricity System

Sulawesi's electricity system needs to maintain the sustainability of the electricity supply which is stable, reliable, safe, eco-friendly, and able to meet the needs of the community. For that reason, the transmission expansion-planning program 2018-2050 is proposed. Considering the load growth, primary energy, and the power flow, it is necessary to build the transmission backbone, which for Indonesian case maybe 275 kV or 500 kV. The determination of the backbone's voltage requires some criteria, one of them is to performing contingency analysis which can be obtained by performance index analysis. Performance index analysis, consist of voltage performance index and active power performance index, is simulated using the DIg-SILENT PowerFactory 15.1.7 software for two generation planning scenarios, regional balanced and resourced based. If the transmission system has exceeded the level of set severity of the contingency case, it is necessary to choose the 500 kV Extra High Voltage Overhead Transmission Line.