An Efficient Primal-Dual Interior-Point Algorithm for Volt/VAR Optimization in Rectangular Voltage Coordinates

Security and reliability of electrical power supply has become indispensable to modern society, the system operator is challenged manage increasingly complex in a manner that ensures expected security operation. In this context, Volt/VAR optimization (VVO) plays key role efficient delivery through transmission system, contributing significantly security, reliability, quality economy This article presents design implementation an primal-dual interior-point algorithm for solution VVO problem. The method combines constraint handling by means logarithmic barrier functions, Lagrangian theory optimization, Newton constitute one most deterministic algorithms large-scale nonlinear optimization. developed also incorporates Newton-Raphson load flow computation, which feasible with respect balance equations at each iteration algorithm. Both problems are formulated rectangular coordinates voltages. departure from researchers, who make use polar formulation, adds considerably efficiency effectiveness been demonstrated case studies performed on 6-bus IEEE 14-bus, 30-bus 118-bus test systems, have selected analyse computational scalability as it applied systems various sizes. extensive analyses conducted reveal algorithm’s efficiency, particularly being able successfully solve problem widely varying sizes without disproportionate increase cost or deterioration results. exhibits characteristics fast convergence, high problems.