Optimal power flow based coordinated reactive and active power control to mitigate voltage violations in smart inverter enriched distribution network

Voltage violations are the main problem faced in distribution networks (DN) with a higher penetration of inverter-based generations (IBG). Active and reactive power control from smart inverters (SI) can mitigate such violations. Optimal flow (OPF)-based provides more accurate operating set points for coordinated operation SIs. Therefore, this paper presents three-phase OPF-based on SI-enriched unbalanced networks. To consider this, first model using current injection (CIM) is developed. Later, optimal active SIs obtained by solving quasi-dynamic optimization problem. The uniqueness proposed method that it regulates voltage at affected nodes obtaining inverter. OPF implemented mathematical CIM Pyomo solved Knitro solver. compared sensitivity-based Volt-Var Control (VVC), Volt-Watt (VWC), combined VVC VWC methods. effectiveness verified European low-voltage CIGRE medium-voltage network 100% penetration. analysis shows optimizes less loss maintain support.