Comparison of Reactive Power Control Techniques for Solar PV Inverters to Mitigate Voltage Rise in Low-Voltage Grids

The greater integration of solar photovoltaic (PV) systems into low-voltage (LV) distribution networks has posed new challenges for the operation power systems. violation voltage limits attributed to reverse flow been recognized as one significant consequences high PV penetration. Thus, reactive control inverters emerged a viable solution localized regulation. This paper presents detailed study on typical Malaysian LV network demonstrate effectiveness different techniques in mitigating overvoltage issues due integration. performance four namely, fixed factor control, scheduled function injected active power, and voltage-dependent were analyzed compared terms number customers with violations, compensation, losses. Three-phase, time-series, high-resolution power-flow simulations performed investigate potential assess adoption controls network. simulation results revealed that incorporation aids successfully networks. In particular, Volt-Var outperformed other by providing effective regulation while requiring less compensation. Furthermore, comparative analysis highlighted significance employing most appropriate technique improved performance.