Operating Voltage and Frequency Regime Validation of Grid Code Requirements in South Africa

Figure 1

Main testbed circuit. Vnu normal upper voltage boundary limit as defined by South African grid codes for grid-connected RPPs. Vnl normal lower voltage boundary limit as defined by South African grid codes for grid-connected RPPs. Vpu spreadsheet pu voltage values imported from dataset spreadsheet, representing the replayed voltage conditions. f spreadsheet frequency values imported from the dataset spreadsheet, representing the replayed frequency conditions.