Impact of Auto-Reclosing on Transmission to Large-Scale Grid-Connected PV System in Cirata

Abstract

As the Indonesian government boosts the capacity of renewable resources to 23% of the energy mix in 2025, more intermittent generators such as large-scale wind and solar farms are coming. In terms of the Java-Bali system, the 145 MWp floating photovoltaic (PV) system in Cirata reservoir would be the first large-scale inverter-based generator to operate. Meanwhile, only some transmission lines utilise both single and three-phase auto-reclosing (SPAR and TPAR) scheme for selfhealing grid initiative. Auto-reclosing (AR) scheme of a transmission line connected to a generator busbar shall be evaluated to maintain the grid stability. This paper discusses the effect of AR scheme on the transmission near to the PV system in Cirata. Delayed AR sequence and synchronism parameters are according to IEEE and PLN. Dynamic simulations with several possible fault scenarios have been performed using the generic PV model in the power system analysis software to analyse the impact of the AR on the large scale PV system. The result shows that the proposed AR scheme would maintain the transient stability in the grid while the PV system would also be capable to comply the fault ride through (FRT) requirement.