Localization of Voltage Regulators in Distribution Systems by a Mixed Genetic–Tabu Search Algorithm


The optimal allocation of regulators banks in distribution systems is a merely combinatorial problem in which the best points of installation correspond to the best benefit, considering the admitted objective function, without violating and operating limits. The objective function must be chosen so that its value represents the operation state of the system. As the problem possesses combinatorial nature, its complexity will increase exponentially with the number of possibilities. Systems with large numbers of nodes and / or with the possibility of installing more than one bank require a large number of calculations to find the solution. An additional issue is the fact that the problem does not have a continuous nature, presenting discontinuity points in the objective function, limiting the application of optimization methods based on gradients. Based on the nature of the problem two optimization methods were used to solve the problem: Genetic Algorithm (GA) and modified Tabu Search (TS). The GA function will scour the search space and find regions with local minima that are candidates to be the solution. On the other hand the TS provides local search in the regions defined by GA so that the overall optimum is achieved.

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M. C. Pimentel Filho and M. F. Medeiros, "Localization of Voltage Regulators in Distribution Systems by a Mixed Genetic–Tabu Search Algorithm," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 751-755. doi: 10.4236/epe.2013.54B145.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] A. S. Safiagianni and G. J. Salis, “Optimum Voltage Regulator Placement in a Radial Power Distribution Network,” IEEE Transactions on Power Systems, [S.l.], Vol. 15, No. 2, 2000, pp. 879-886.
[2] S. A. Dolli and S. H. Jangamshetti, “Modeling and Optimal Placement of Voltage Regulator for a Radial System,” Power, Signals, Controls and Computation (EPSCICON), 2012 International Conference
[3] M. Júnior, M. F. de; P. Filho and M. Chianca, “Optimal Power Flow in Distribution Networks by Newton’s Optimization Methods,” IEEE International Symposium on Circuts and System, 1998, Monterey California.
[4] M. Júnior, M. F. De, P. Filho and M. Chianca, “Optimal Placement of Various Voltage Regulators by Means of Sensitivity Parameters from a Radial Load Flow,” IEEE Eletric Power and Energy Conference, Winnipeg, Canada, 2011.
[5] C. S. Cheng and D. Shirmohammad, “A Three Phase Power Flow Method for Real-time Distribution System Analysis,” IEEE Transactions on Power Apparatus and System, Vol. 10, No. 2, 1998, pp. 671-679.
[6] C. A. N. Pereira and C. A. Castro, “Optimal Placement of Voltage Regulator in Distribution Systems,” IEEE Bucharest Power Tech Conference, Bucharest, Romania, June 28th -July 2nd, 2009.
[7] M. E. Baran and F. F. Wu, “Optimal Sizing of Capacitors Placed on a Radial Distribution System,” IEEE Trans. on Power Delivery, Vol. 4, No. 1, 1989b, pp. 735-743.

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