This paper reports a new and accurate method for load-flow solution of radial distribution networks with minimum data preparation. The node and branch numbering need not to be sequential like other available methods. The proposed method does not need sending-node, receiving-node and branch numbers if these are sequential. The proposed method uses the simple equation to compute the voltage magnitude and has the capability to handle composite load modelling. The proposed method uses the set of nodes of feeder, lateral(s) and sub lateral(s). The effectiveness of the proposed method is compared with other methods using two examples. The detailed load-flow results for different kind of load-modellings are also presented.<\/p>\r\n","references":"[1] N. Vempati, R.R.Shoults, M.S. Chen, L. Schwobel ,\" Simplified feeder\r\nmodeling for load flow calculations,\" IEEE Trans. on Power Systems; vol.2, no.1, pp.168 -174,1987.\r\n[2] T.H.Chen, M.Chen, K.J. Hwang, P. Kotas, E.A.Chebli,\" Distribution system power flow analysis\u00d4\u00c7\u00f6a rigid approach,\" IEEE Trans. on Power\r\nDelivery; vol.6,no.3 pp. 1146-1152,1981.\r\n[3] \"Distribution automation: a practical tool for shaping a more profitable\r\nfuture: Special report,\" Electrical World ,pp. 43-50, December 1986.\r\n[4] S.Iwamoto, Y.A.Tamura,\" Load flow calculation method for ill\u2212conditioned power systems,\" IEEE Transactions Power Apparatus\r\nand Systems, vol. PAS\u2212100, No. 4, pp. 1706\u22121713,1981.\r\n[5] D. Rajicic, Y. Tamura, \" A modification to fast decoupled load flow for networks with high R\/X ratios,\" IEEE Transactionson Power Systems; vol. 3, no.2, pp.743\u2212746,1988.\r\n[6] W.H.Kersting, D.L. Mendive, \" An Application of Ladder Theory to the\r\nSolution of Three-Phase Radial Load-Flow Problem,\" IEEE Transactions on Power Apparatus and Systems; vol. PAS\u221298 no.7,\r\npp.1060 - 1067, 1976.\r\n[7] W.H.Kersting, \" A Method to Teach the Design and Operation of a Distribution System,\" IEEE Transactions on Power Apparatus and\r\nSystems; vol. PAS\u2212103, no.7, pp.1945 - 1952, 1984.\r\n[8] R.A. Stevens , et al., \" Performance of Conventional Power Flow Routines for Real Time Distribution Automation Application,\" Proceedings 18th Southeastern Symposium on Systems Theory: IEEE Computer Society: 196 - 200, 1986.\r\n[9] D, Shirmohammadi, H.W. Hong, A. Semlyn, G.X. Luo, \" A Compensation Based Power Flow Method for Weakly Meshed Distribution and Transmission Network,\" IEEE Transactions on Power\r\nSystems, vol. 3, no.2, pp. 753 - 762,1988.\r\nWorld Academy of Science, Engineering and Technology 21 2008\r\n[10] M.E. Baran ME and F.F. Wu , \" Optimal Sizing of Capacitors Placed on\r\na Radial Distribution System,\" IEEE Transactions on Power Delivery; vol. 4, no. 1, pp. 735 - 743, 1989.\r\n[11] C.G. Renato, \"New Method for the Analysis of Distribution Networks,\"\r\nIEEE Transactions on Power Delivery; vol. 5, no. 1, pp. 9 - 13,1989.\r\n[12] H.D.Chiang , \" A Decoupled Load Flow Method for Distribution Power\r\nNetworks: Algorithms Analysis and Convergence Study,\" International Journal of Electrical Power Systems; vol. 13, no.3, pp.130 -138,1991.\r\n[13] S.K. Goswami and S.K. Basu, \"Direct Solutions of Distribution Systems,\" IEE Part C (GTD), vol.138, no.1, pp.78 - 88,1991.\r\n[14] G.B.Jasmon and L.H.C.C. Lee , \" Stability of Load-Flow Techniques for Distribution System Voltage Stability Analysis,\" Proceedings IEE Part C (GTD), vol.138, no. 6, pp. 479 - 484, 1991.\r\n[15] D. Das, H.S.Nagi and D.P. Kothari , \"Novel Method for solving radial\r\ndistribution networks,\" Proceedings IEE Part C (GTD), vol.141, no.\r\n4, pp. 291 - 298, 1991.\r\n[16] T.K.A. Rahman and G.B. Jasmon, \"A new technique for voltage stability\r\nanalysis in a power system and improved loadflow algorithm for distribution network,\" Energy Management and Power Delivery Proceedings of EMPD '95; vol.2, pp.714 - 719, 1995.\r\n[17] S. Ghosh and D. Das, \"Method for Load\u2212Flow Solution of Radial\r\nDistribution Networks,\" Proceedings IEE Part C (GTD), vol.146,\r\nno.6,pp.641 - 648, 1999.\r\n[18] S. Jamali. M.R.Javdan. H. Shateri and M. Ghorbani , \"Load Flow Method for Distribution Network Design by Considering Committed\r\nLoads,\" Universities Power Engineering Conference , vol.41, no.3, pp. 856 - 860, sept.2006.\r\n[19] P. Aravindhababu, S. Ganapathy and K.R. Nayar, \" A novel technique for\r\nthe analysis of radial distribution systems,\" International Journal of\r\nElectric Power and Energy Systems, vol. 23, pp. 167-171, 2001.\r\n[20] S.F. Mekhamer et.al., \" Load Flow Solution of Distribution Feeders: A\r\nnew contribution,\" International Journal of Electric Power Components\r\nand Systems,vol. 24, pp.701 \u2212707, 2002.\r\n[21] A. Afsari, S.P. Singh, G.S. Raju, G.K.Rao , \" A fast power flow solution\r\nof radial distribution networks,\" International Journal Electric\r\nComponents and Systems, vol. 30, pp.1065\u22121074,2002.\r\n[22] R. Ranjan and, D. Das , \u201c Simple and Efficient Computer Algorithm to \r\nSolve Radial Distribution Networks,\u201d International Journal of Electric \r\nPower Components and Systems, vol.31, no. 1,: pp.95 \u0010107, 2003. \r\n[23] M.Chakravorty and D.Das, \u201c Voltage stability analysis of radial \r\ndistribution networks,\u201d International Journal of Electric Power and \r\nEnergy Systems, vol.23, pp. 129\u0010135, 2001. \r\n[24] R.Ranjan, B.Venkatesh and D.Das, \u201cVoltage Stability Analysis of Radial \r\nDistribution Networks,\u201d International Journal of Electric Power \r\nComponents and Systems, vol. 33, pp.501 \u0010511, 2004. \r\n[25] M.E.Baran and F.F. Wu, \u201c Network Reconfiguration in Distribution \r\nSystems for Loss Reduction and Load Balancing,\u201d IEEE Transactions \r\non Power Delivery; vol.4, no.2, pp.1401 \u2013 1407, 1989. ","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 21, 2008"}