Power Flow Analysis of Weakly Meshed Distribution Network Including DG

A. Al-Sakkaf, M. AlMuhaini


Power flow is one of the essential studies in power system operation and planning. All steady-state parameters for power distribution systems, such as bus voltage magnitudes, angles, power flows, and power losses, can be calculated by conducting power flow analysis. Distribution system features differ from those of transmission system, rendering conventional load flow algorithms inapplicable. In this paper, three distribution power flow techniques are presented and tested to evaluate their performance when applied to a networked distribution system including distributed generation (DG). These are the distribution load flow (DLF) matrix, the enhanced Newton Raphson (ENR), and the robust decoupled (RD) method. IEEE 33-bus system is adopted for implementing the above methods. Radial and weakly meshed configurations are applied to the tested system with DG inclusion to investigate their influence on the power flow study findings.


power flow analysis; distribution systems; load flow algorithms; weakly meshed configuration; distributed generator

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H. Saadat, Power System Analysis, McGraw Hill, 2004

R. Guguloth, T. K. Sunil Kumar, “Optimal power flow-based congestion management by classical and intelligent methods”, International Journal of Electrical Power and Energy Systems, Vol. 36, No. 3, pp. 104-111, 2016

M. S. Srinivas, “Distribution load flows: A brief review”, 2000 IEEE Power Engineering Society Winter Meeting, Singapore, Singapore, January 23-27, 2000

D Shirmohammadi, H. W. Hong, A. Semlyen, G. X. Luo, “A compensation-based power flow method for weakly meshed distribution networks”, IEEE Transactions on Power Systems, Vol. 3, No. 2, pp. 753-762, 1988

W. M. Lin, J. H. Teng, “Three-phase distribution network fast decoupled power flow solutions”, International Journal of Electrical Power and Energy Systems, Vol. 22, No. 5, pp. 375-380, 2000

P. Aravindhababu, S. Ganapathy, K. R. Nayar, “A novel technique for the analysis of radial distribution systems”, International Journal of Electrical Power and Energy Systems, Vol. 23, No. 3, pp. 167-171, 2001

R. Ashokkumar, P. Aravindhababu, “An Improved Power Flow Technique for Distribution Systems”, Computer Science, Informatics and Electrical Engineering, Vol. 3, No. 1, pp. 1-8, 2009

A. Alsaadi, G. Gholami, “An effective approach for distribution sys-tem for power flow solution”, International Journal of Electrical and Computer Engineering, Vol. 3, No. 1, pp. 1-5, 2009

P. Aravindhababu, R. Ashokkumar, “A robust decoupled power flow for distribution systems”, Energy Conversion and Management, Vol. 52, No. 4, pp. 1930-1933, 2011

K. Prakash, M. Sydulu, “Topological and Primitive Impedance-Based Load Flow Method for Radial and Weakly Meshed Distribution Systems”, Iranian Journal of Electrical and Computer Engineering, Vol. 10, No. 1, pp. 10-18, 2011

H. Shateri, M. Ghorbani, N. Eskandari, A. H. Mohammad-Khani, “Load Flow Method for Unbalanced Distribution Networks with Dispersed Generation Units”, 47th International Universities Power Engineering Conference, London, UK, September 4-7, 2012

M. E. Baran, F. F. Wu, “Network reconfiguration in distribution systems for loss reduction and load balancing”, IEEE Transactions on Power Delivery, Vol. 4, No. 2, pp. 1401-1407, 1989

J. Z. Zhu, “Optimal reconfiguration of electrical distribution net-work using refined genetic algorithm”, Electric Power Systems Research, Vol. 62, pp. 37-42, 2002

M. P. Selvan, K. S. Swarup, “Distribution system load flow using object oriented methodology”, 2004 International Conference on Power System Technology, 2004, Singapore, Singapore, November 21-24, 2004

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