An Approach for Transmission Usage & Loss Allocation by Graph Theory

Restructuring of Electricity supply industry introduced many issues such as transmission pricing, transmission loss allocation and congestion management. Many methodologies and algorithms were proposed for addressing these issues. In this paper a power flow tracing based method is proposed which involves Matrices methodology for the transmission usage and loss allocation for generators and demands. This method provides loss allocation in a direct way because all the computation is previously done for usage allocation. The proposed method is simple and easy to implement in a large power system. Further it is less computational because it requires matrix inversion only a single time. Results are shown for the sample 6 bus system and IEEE 14 bus system. Key-Words: Modified Kirchhoff Matrix, Power flow tracing, Transmission Pricing, Transmission Loss Allocation