Hardware-in-loop Experimental Verifications for Hourly Dispatching Solar PV Power with Battery Energy Storage

This study demonstrates a dispatching scheme of a solar power system for a specific dispatching horizon for an entire day utilizing a battery energy storage system (BESS). This paper also presents a control hardware-in-the loop (CHIL) based test system for validating the proposed BESS controller for dispatching the photovoltaic (PV) power. The CHIL has been utilized to justify the proposed BESS controller performance under various scenarios of the BESS charging-discharging for tracking the desired grid reference power (PG
rid, ref
). For the CHIL, the PV farm is modeled in the real-time digital simulator (RTDS), and the BESS controller is designed in the digital signal processor (DSP). In this research, the power converter connected to the BESS is controlled by the DSP, which is coupled between the gigabit transceiver analogue output (GTAO) card and the gigabit transceiver digital input (GTDI) card in the RTDS interface boards.