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Volt/var optimization of unbalanced distribution feeders via Mixed Integer Linear Programming

TitleVolt/var optimization of unbalanced distribution feeders via Mixed Integer Linear Programming
Publication TypeConference Paper
Year of Publication2014
AuthorsBorghetti, A., F. Napolitano, and C. A. Nucci
Conference NameProceedings - 2014 Power Systems Computation Conference, PSCC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN Number9788393580132
KeywordsCapacitors, Current limiting reactors, distribution feeders, Electric generators, Electric machine theory, Feeding, Integer programming, Mixed integer linear programming, Mixed integer linear programming model, On- load tap changers, Operating condition, Power distributions, power transformers, Scheduling, Unbalanced distribution, Volt/var optimizations, Voltage control

The paper presents a Mixed Integer Linear Programming (MILP) model for the solution of the three-phase volt/var optimization (WO) of medium voltage unbalanced distribution feeders. The WO of a distribution feeder is aimed at calculating the most efficient operating conditions by means of the scheduling of transformers equipped with an on-load tap changer and distributed reactive power resources (such as embedded generators and switchable capacitors banks). The proposed model allows the representation of feeders composed by three-phase, two-phase, and single-phase lines, by transformers with different winding connections, by unbalanced wye- and delta-connected loads, by three-phase and single phase capacitor banks and embedded generators. The accuracy of the results is verified by using IEEE Test Feeders. © 2014 Power Systems Computation Conference.