Transient Stability Assessment of Large Scale Grid-Connected Photovoltaic on Transmission System

The purpose of this study is to measure the transient stability of large scale grid-connected photovoltaic in transmission line. This research used a transient stability analysis to measure the stability of the power angle stability, frequency stability, voltage stability, active power response, reactive power response of the synchronous generator and critical clearing time. It analyzed during the occurrence of the three-phase short-circuit interruption and the change in PV system power injection. This simulations was conducted in four conditions namely a system without PV and systems with solar radiation intensity 1000 W/m2, 700 W/m2 and 500 W/m2 respectively. The study used a large test system representing of the Gorontalo Province interconnection as a case study. The simulation results showed that the higher intensity of solar radiation resulted in the higher the stability of transient influence in the electrical transmission system.