An Adaptive NRLF with PQV and P/Q Buses for Loss Minimization and Voltage Stability Improvement of Optimally Reconfigured and DG Integrated Radial Distribution Systems

This paper proposes an adaptive Newton Rapson Load Flow (NRLF) method and a multi-objective function for loss minimization and Voltage Stability (VS) enhancement of Radial Distributed System (RDS) in presence of PQV and P/Q buses. Enhancement in VS of the network is presented in terms of maximum loadability. In presence of two novel set of buses, generation bus (i.e. P/Q-bus) and remotely controlled bus (i.e. PQV-bus), optimal DG integration and network reformation in RDS is also presented in this paper. The specified or known quantity for the P/Q bus is only active/reactive power generation, and for the PQV bus the known quantities are Watt and VAr power generations together with voltage magnitude to be maintained by generation bus (i.e. P/Q-bus). A multi-objective function is proposed here for P/Q-bus selection, optimal DG integration and network reformation of RDS. Simulation has been carried out on IEEE 33-bus and 69-bus RDS to demonstrate the effectiveness of the proposed method. Also, the simulation findings are compared with relevant peers in the literature to justify the validity of the proposed work.