Determination of Optimal PV Energy Share Considering Voltage Stability Index

Abstract

In this study, the FPA (flower pollination algorithm) method is used for optimize the location and capacity of photovoltaic distributed considering voltage stability index (VSI). The proposed method is used in the KTN 03 bus system case study (Yogyakarta city). This operation is conducted for a half-day (10:00 AM - 2:00 PM) operation. There are two scenarios used in this study. Scenario 1 with PV placed on one bus and scenario 2 assuming all buses can be installed PV.The value generated in the two-scenario simulation, the total loss becomes 3.060 MW in scenario 1 and 3.1459 MW in scenario 2. Increased stability index values are seen on all lines. However, the smallest VSI values were obtained at lines 9, 18, and 35. The total energy loss in scenario 1 is 1.5300 MWh and scenario 2 is 1.5729 MWh. The PV energy share was obtained for 4.72% and 5.86% in both scenarios.