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An Approach to Optimal Distribution System Planning Through Conductor Gradation

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2 Author(s)
M. Ponnavaikko ; Department of Electrical Engineering and Centre of Energy Studies Indian Institute of Technology ; K. s. Prakasa Rao

An optimal conductor gradation procedure for radial distribution feeders is proposed in this paper. Models to represent feeder cost, energy loss cost and voltage regulation as a function of conductor cross-section and an objective function for optimizing the conductor cross-section have been formulated. The problem has been posed as a multistage decision dynamic programming problem, and the optimal conductor cross- sections for the fender segments are obtained by solving the same. The proposed method takes into account the non-uniform distribution of loads along the length of the feeders and also the maximum permissible voltage drop along a feeder. Further, the method takes into account the load growth in future years of the plan period. The results of the design of a typical radial feeder using thp proposed method are presented and discussed.

Published in:

IEEE Transactions on Power Apparatus and Systems  (Volume:PAS-101 ,  Issue: 6 )