Voltage Stability Improvement in Optimal Placement of Voltage Regulators and Capacitor Banks Based on FSM and MMOPSO Approach

Installation of Shunt Capacitor Banks (SCBs) and Voltage Regulators (VRs) within distribution system is one the most effective solutions in reactive power control for improving voltage profile reducing losses along feeder. However, presence VRs can deteriorate Stability Margin (VSM) feeders. To address this issue, paper proposes a multi-objective programming model simultaneous optimal allocation SCBs network to improve minimize installation costs. In proposed model, Index (VSI) considered prevent instability during SCBs/VRs allocation. A new Modified Multi-Objective Particle Swarm Optimization (MMOPSO) algorithm which includes dynamic inertia weight mutation operator obtain as Pareto set. Thereinafter, Fuzzy Satisfaction Method (FSM) determines solution. practical long radial feeder has been employed demonstrate efficiency efficacy with comparison between MMOPSO original MOPSO.