Placement of Fixed and/or Nonsimultaneously Switched Capacitors on Unbalanced Three-Phase Feeders Involving Laterals

The modeling needed for radial distribution systems is made considerably complicated by the consideration of primary distribution feeders that are asymmetrical, multigrounded, supply unbalanced loads, and involve three-phase, two-phase, and single-phase laterals. This paper considers such radial feeders and sets forth for the first time, a new methodology for the determination of optimal sizes, locations, and switching times of fixed and/or nonsimultaneouly switched shunt capacitor installations for maximization of the overall net savings associated with the resultant peak power and energy loss reductions.