Abstract
Integration of large-scale renewable energy (RE) sources in particular, wind and solar energy into the grid introduces current and voltage harmonics due to power electronics devices as well as inverter connected into the RE sources. Ensuring adequate harmonics in the line currents of RE integrated power system is one of the biggest challenges today. Therefore, this study investigates the potential impacts in particular current and voltage harmonics causes due to large-scale integration of RE into the Berserker Street Feeder, Frenchville Substation under Rockhampton distribution network (DN), Central Queensland, Australia. From the model analyses, it has clearly evident that harmonics across the network increases with the increase of RE integration and causes uncertainties in the feeder as well as in the DN. This study also explores possible mitigation measures and it has seen that optimized STATCOM effectively reducing the adverse harmonic impacts of integrating large-scale RE into the DN.
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