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A Method for Estimating Technical Losses in Primary Feeder Conductors

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One of the engineers’ concerns is the loss of energy in the electric power system. Actually, most of the energy losses occur in the distribution system, i.e., about 4-8%. Therefore, efforts should be made in order to improve the performance of the distribution networks. Evaluating losses in the distribution networks should be done in order to reduce losses. The problem is that there are many nodes, several lateral feeders, and the un-uniform current flowing in the feeder so that calculating the losses becomes very difficult. In addition, the big distribution system has so many feeders, generally more than 1000 feeders, with various types. Thus, the calculation of the losses in the distribution system will face very complex and large-scale problems. Therefore, calculating losses for large scale distributed systems that use load flow or measurement methods is not possible. This paper proposes an effective method that uses a lump load model for technical losses in distribution systems. By approaching, the current is proportional to power, the input current into the feeder can be distributed to each lateral feeder. Thus, the current flow in each segment of the feeder can be determined. For typical feeder with the load currents changed linearly by linearity factor, then-current flows of each segment feeder can be easily determined as c function. This function is created as a calculation model of losses with a clear derivative of the mathematical formulations. The results of numerical studies show that this method is accurate enough with the error of 1.26% when compared to the load flow method using an 8-node feeder. The calculation result is based on the IEEE 13-node test feeder; its loss is smaller than 3.86% compared to the load flow method.
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Technical Losses; Input Current; Lump Load Model; Accurate; Effective

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T. V. Meghana, G. Swetha and R. Prakash, Power Losses Estimation in Distribution Network (IEEE-69 bus) with Distributed Generation Using Second-Order Power Flow Sensitivity Method, International Research Journal of Engineering and Technology (IRJET), Vol. 2(No. 2):938-94, May-2015.

Hidayat, M., Li, F., Energy-Based Distributed Generation Incentives for Distribution Network Operators, (2016) International Review of Electrical Engineering (IREE), 11 (6), pp. 673-679.

K. V. S. Murthy and M. Raju, Electrical Energy Loss in Rural Distribution Feeders: A Case Study, ARPN Journal of Engineering and Applied Sciences, Vol. 4 (No. 2):33-37, 2009.

I.A. Adejumobi I.A and O.I Adebisi, Power Loss Reduction on Primary Distribution Networks Using Tap-Changing Technique, IJRRAS, Vol. 10 (No. 2): 272-279, February 2012.

Priyesh K. and Somvir, Analysis of Network Reconfiguration Technique for Loss Reduction in Distribution System, International Journal of Advanced Research in Electronics and Communication Engineering (IJARECE), Vol. 5(No.4):988-993, April 2016.

Adesina L. M. and Ademola A., Determination of Power System Losses in Nigerian Electricity Distribution Networks, International Journal of Engineering and Technology, Vol. 6(No. 9):322-326, September 2016.

S. Sameer, MH. Yasen and HH. Abdullah, Evaluation of Electric Energy Losses in Kirkuk Distribution Electric System Area, Journal Electrical and Electronic Engineering, Vol. 7(No. 2):144-150, 2011.

T. Gonen, Electric power distribution system engineering, McGraw-Hill Book Company, International editions, Copyright@1986, Chong Moh Offset Printing Pte, LTD, Chapter 7:318-374, 1987.

P. Chandra Sekar, R.S. Shivakumara Aradhya and M.M.Babu Narayanan, A Novel Method for Estimation of HT and LT Feeder Losses in Distribution System, Fifteenth National Power Systems Conference (NPSC), IIT Bombay, pp.450-455, December 2008.

Ayaz, M., Mustafa, G., Usman, M., Yameen, G., Bifurcation and Rehabilitation of 11 kV Distribution Feeder to Reduce the Technical Losses, (2017) International Journal on Energy Conversion (IRECON), 5 (3), pp. 88-95.

Sayyed M.B. S., M. Yazdani-Asrami and Mir-Mohammad M. T., Decreasing Length of Distribution Network for Loss Reduction: Technical and Economical Analysis, Research Journal of Applied Sciences Engineering and Technology, Vol. 4(No.7): 813-818, 2012.

M. Barukcic, S. Nikolovski and Z. Hederic, Estimation of Power Losses on Radial Feeder Using Minimum Electrical Measurements and Differential Evolution Method, International Journal of Soft Computing And Software Engineering (JSCSE), Vol. 2(No. 4):1-13, 2012.

S. Sambath, P. Palanivel and C. Subramani, Reduction of Line Losses in Presence of Distributed Power Generation: India-A Case Study, World Applied Sciences Journal, Vol. 27(No. 9): 1168-1174, 2013.

Y. Al-Mahroqi, I.A. Metwally, A. Al-Hinai, and A. Al-Badi, Reduction of Power Losses in Distribution Systems, World Academy of Science, Engineering and Technology International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering, Vol. 6(No. 3):315-323, 2012.

K.A. Ibrahim, M.T. Au, C.K. Gan and J. H. Tang, System wide MV distribution network technical losses estimation based on reference feeder and energy flow mode, International Journal of Electrical Power & Energy Systems, Vol. 93: 440-450, December 2017.

Exposito, A.G., Santos, J.M.R., Garcia, T.G and E.A. Velasco, E.A.R., Fair allocation of transmission power losses, IEEE Trans. on Power System, Vol. 15(No. 1):184-188, 2000.

S. Pande and Prof. J.G. Ghodekar, Computation of Technical Power Loss of Feeders and Transformers in Distribution System using Load Factor and Load Loss Factor, International Journal of Multidisciplinary sciences and engineering, Vol. 3(No. 3):22-25, 2012.

H. Zein and D. Erwin, Cost Allocation of Transmission Losses in Electric Market Mechanism, TELKOMNIKA Indonesia Journal of Electrical Engineering, Vol.10(No. 2): 211-218, 2012.

Adams and Douglas, An Implementation on Calculation of Technical Losses in Transmission and Distribution System, IPASJ International Journal of Management (IIJM), Vol. 6(No.1):3-5, January 2018 .

Zahoor H., M. Hammad-u-Salam, Shahid M.S., Raza H.S., Nisar A. M., Muhammad M., Rahaat A.K., Technical Losses Ratio: Analysis of Electric Power Transmission and Distribution Network, IJCSNS International Journal of Computer Science and Network Security, Vol.18(No.9):132-136, September 2018.

L. Ramesh, S.P. Chowdhury, S. Chowdhury, A.A. Natarajan, C.T. Gaunt, Minimization of Power Loss in Distribution Networks by Different Techniques, International Journal of Electrical and Computer Engineering, Vol. 3(No.4): 661-667, 2009.

Kazsoki, A., Hartmann, B., Data Analysis and Data Generation Techniques for Comparative Examination of Distribution Network Topologies, (2019) International Review of Electrical Engineering (IREE), 14 (1), pp. 32-42.

Wachjoe, C., Zein, H., Fairness in Allocation of Transmission Losses to Bilateral Contracts with Superposition and Decomposition Techniques, (2020) International Journal on Energy Conversion (IRECON), 8 (1), pp. 1-7.

Younis, E., Al-Attar, M., Kerdphol, T., Mitani, Y., Optimization of Reactive Compensation in Distribution Networks Based on Moth Swarm Intelligence for Multi-Load Levels, (2017) International Review of Electrical Engineering (IREE), 12 (4), pp. 342-352.


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