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A hybrid particle swarm optimization for distribution state estimation

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4 Author(s)
Naka, S. ; Tech. Res. Center, Kansai Electr. Power Co. Inc., Hyogo, Japan ; Genji, T. ; Yura, T. ; Fukuyama, Y.

This paper proposes a hybrid particle swarm optimization (HPSO) for a practical distribution state estimation. The proposed method considers nonlinear characteristics of the practical equipment and actual limited measurements in distribution systems. The method can estimate load and distributed generation output values at each node by minimizing the difference between measured and calculated voltages and currents. The feasibility of the proposed method is demonstrated and compared with an original particle swarm optimization-based method on practical distribution system models. Effectiveness of the constriction factor approach of particle swarm optimization is also investigated. The results indicate the applicability of the proposed state estimation method to the practical distribution systems.

Published in:

Power Systems, IEEE Transactions on  (Volume:18 ,  Issue: 1 )