Load Profile-Based Power Loss Estimation for Distribution Networks

In this paper, simple approximate formulas are established to estimate active and reactive power losses in distribution networks. The developed formulas based on load profiles are derived from Elgerd’s power loss formulas. A simple model is also proposed to estimate the load profile while considering several parameters, such as the average load demand and the load limitations. Derivation of the load model and the loss formulas are presented along with their applications on two distribution networks. The results show that the loss formulas, which depend on the proposed load profile, can estimate the power losses in distribution networks with high precision.

___

D. T. Nguyen, “Modeling Load Uncertainty in Distribution Network Monitoring”, IEEE Trans Power Syst, vol. 30, no. 5, pp. 2321-2328, 2015.

J. A. Jardini, C. M. V. Tahan, M. R. Gouvea, S. U. Ahn, F. M. Figueiredo, “Daily load profiles for residential, commercial and industrial low voltage consumers”, IEEE Trans Power Delivery, vol. 15, no. 1, pp. 375-380, 2000.

E. C. Bobric, G. Cartina, G. Grigoras, “Clustering Techniques in Load Profile Analysis for Distribution Stations”, Adv Electr Comput Eng, vol. 9, no. 1, pp. 63-66, 2009.

D. Q. Hung, N. Mithulananthan, “Loss reduction and loadability enhancement with DG: A dual-index analytical approach”, Appl Energ, vol. 115, pp. 233-241, 2014.

H. Saadat, “Power Systems Analysis”, PSA Publishing, USA, 2010.

C. F. Chang, “Reconfiguration and Capacitor Placement for Loss Reduction of Distribution Systems by Ant Colony Search Algorithm”, IEEE Trans Power Syst, vol. 23, no. 4, pp. 1747-1755, 2008.

O. Elgerd, “Electric Energy Systems Theory: An Introduction”, New York: McGraw-Hill, 1971.

L. Wang, C. Singh, “Environmental/economic power dispatch using a fuzzified multi-objective particle swarm optimization algorithm”, Elec Power Syst Res, vol. 77, no. 12, pp. 1654-1664, 2007.

D. Q. Hung, N. Mithulananthan, R. C. Bansal, “Analytical strategies for renewable distributed generation integration considering energy loss minimization”, Appl Energ, vol. 105, pp. 75-85, 2013.

D. Q. Hung, N. Mithulananthan, R. Bansal, “Analytical Expressions for DG Allocation in Primary Distribution Networks”, IEEE Trans Energy Convers, vol. 25, no. 3, pp. 814-820, 2010.

D. Q. Hung, N. Mithulananthan, “Multiple Distributed Generator Placement in Primary Distribution Networks for Loss Reduction”, IEEE Trans Ind Electron, vol. 60, no. 4, pp. 1700-1708, 2013.

M. Shahzad, I. Ahmad, W. Gawlik, P. Palensky, “Load Concentration Factor Based Analytical Method for Optimal Placement of Multiple Distribution Generators for Loss Minimization and Voltage Profile Improvement”, Energies, vol. 9, no. 4, p. 287, 2016.

N. A. Iqteit, A. B. Arsoy, B. Çakir, “A Simple Method to Estimate Power Losses in Distribution Networks”, 10th International Conference on Electrical and Electronics Engineering (ELECO), 2017, pp 135-140.

N. Mohandas, R. Balamurugan, L. Lakshminarasimman, “Optimal location and sizing of real power DG units to improve the voltage stability in the distribution system using ABC algorithm united with chaos”, Int J Elec Power Energ Syst, vol. 66, pp. 41-52, 2015.