Transmission Loss Allocation via Loss Function Decomposition and Current Projection Concept

One of the major problems in liberalized power markets is loss allocation. In this paper, a different method for allocating transmission losses to pool market participants is proposed. The proposed method is fundamentally based on decomposition of loss function and current projection concept. The method has been implemented and tested on several networks and one sample summarized in the paper. The results show that the method is comprehensive and fair to allocating the energy losses of a power market to its participants.

Authors:

• M.R. Ebrahimi
• Z. Ghofrani
• M. Ehsan

Keywords:

• Transmission loss
• loss allocation
• current projectionconcept
• loss function decomposition.

References:

[1] A.M.Silva and J.G.Costa, "Transmission Loss Allocation: Part1-Single
Energy Market" IEEE Trans. on Power Systems, Vol.18, No.4,
November 2003, pp.1389-1393.
[2] J. Conejo, F. D. Galiana, I. Kockar, "Z-Buss Loss Allocation," IEEE
Trans. on Power Systems, vol. 16, no. 1, pp. 105-110, Feb. 2001.
[3] Ilic M, Galiana FD, Fink L. "Power systems restructuring: engineering
and economics" .Norwell, MA: Kluwer; 1998.
[4] Galiana FD, Conejo AJ, Kockar I . "Incremental transmission loss
allocation under pool dispatch".IEEE Trans Power Syst 2002;17:26-33.
[5] Finney J, Othman HA, Rutz WL. "Evaluating transmission congestion
constraints in system planning". IEEE Trans Power Syst
1997;12(3):1143-50.
[6] Bialek JW. "Tracing the flow of electricity". IEE Proc Gener Transmand
Distrib 1996;143:313-20.
[7] Kirschen D, Strbac G. "Tracing active and reactive power between
generators and loads using real and imaginary currents". IEEE Trans
Power Syst 1999;14:1312-9.
[8] Strbac G, Kirschen D, Ahmed S. "Allocating transmission system usage
on the basis of traceable contributions of generators and loads to flows".
IEEE Trans Power Syst 1998;13:527-34.
[9] M.Ehsan, S.N.Keshmiri, "Transmission Loss Allocation Using
Normalized Loss Weight Factors", International Power Engineering
Conference Nanjing China, pp. 431-435, 6-9 April 2008.
[10] S. Abdelkader, "A new method for transmission loss allocation
considering the circulating currents between generators" IEEE Power
Systems Conference 12th International Middle-East, pp.282-286, March
2008.
[11] C. Unsihuay and O. R. Saavedra, "Transmission loss unbundling and
allocation under pool electricity markets," IEEE Trans. Power Syst., vol.
21, no. 1, pp. 77-84, Feb. 2006.