This paper presents a practical scheme that can be used for allocating the transmission loss to generators and loads. In this scheme first the share of a generator or load on the current through a branch is determined using Z-bus modified matrix. Then the current components are decomposed and the branch loss allocation is obtained. A motivation of proposed scheme is to improve the results of Z-bus method and to reach more fair allocation. The proposed scheme has been implemented and tested on several networks. To achieve practical and applicable results, the proposed scheme is simulated and compared on the transmission network (400kv) of Khorasan region in Iran and the 14-bus standard IEEE network. The results show that the proposed scheme is comprehensive and fair to allocating the energy losses of a power market to its participants.<\/p>\r\n","references":"[1] V. S. C. Lim, J. D. F. McDonald, and T. K. Saha,\"Comparative\r\ndistribution of system losses to market participants using different loss\r\nallocation methods.\" 2005 IEEE\/PES Transmission and Distribution.\r\nAsia and Pacific Dalian, China. 1-7.\r\n[2] J. Conejo, J. Contreras, I. Kockar, D.A. Lima and A. Padilha, \"Z-Bus\r\nTransmission Network Cost Allocation,\" IEEE Trans. on Power\r\nSystems, vol. 22, no. 1, pp. 342-349, Feb. 2007.\r\n[3] C. Unsihuay and O. R. Saavedra, \"Transmission loss unbundling and\r\nallocation under pool electricity markets,\" IEEE Trans. Power Syst.,vol.\r\n21, no. 1, pp. 77-84, Feb. 2006.\r\n[4] J. Conejo, F. D. Galiana, I. Kockar, \"Z-Bus Loss Allocation,\" IEEE\r\nTrans. on Power Systems, vol. 16, no. 1, pp. 105-110, Feb. 2001.\r\n[5] Ilic M, Galiana FD, Fink L. \" Power systems restructuring: engineering\r\nand economics\" .Norwell, MA: Kluwer; 1998.\r\n[6] Bialek JW. \"Tracing the flow of electricity\". IEE Proc Gener Transmand\r\nDistrib 1996;143:313-20.\r\n[7] Kirschen D, Strbac G. \"Tracing active and reactive power between\r\ngenerators and loads using real and imaginary currents\". IEEE Trans\r\nPower Syst 1999;14:1312-9.\r\n[8] Strbac G, Kirschen D, Ahmed S. \"Allocating transmission system usage\r\non the basis of traceable contributions of generators and loads to flows\".\r\nIEEE Trans Power Syst 1998;13:527-34.\r\n[9] Galiana FD, Conejo AJ, Kockar I . \"Incremental transmission loss\r\nallocation under pool dispatch\".IEEE Trans Power Syst 2002;17:26-33.\r\n[10] M.Ehsan, S.N.Keshmiri, \"Transmission Loss Allocation Using\r\nNormalized Loss Weight Factors\", International Power Engineering\r\nConference Nanjing China, pp. 431-435, 6-9 April 2008.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 55, 2011"}