Title :
An Approximate Method for Loss Sensitivity Calculation in Unbalanced Distribution Systems
Author_Institution :
Electr. Eng. & Comput. Sci. Dept., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
Recent studies have shown that locational marginal pricing (LMP) model can be extended to the electric distribution system to create better economic and operational signals. Loss sensitivity calculation is an important requirement for calculating distribution LMP. This letter proposes a novel approximate approach for calculating nodal loss sensitivities for large unbalanced radial distribution networks. The method has been further validated through perturbation studies performed with the IEEE 8500-node model. The results from this work can help facilitate further studies and implementation of distribution LMP in practical electrical distribution systems.
Keywords :
approximation theory; losses; power distribution economics; pricing; IEEE 8500-node model; LMP model; approximate method; locational marginal pricing model; nodal loss sensitivity calculation; perturbation study; unbalanced radial electric distribution system; Approximation methods; Load modeling; Mathematical model; Pricing; Reactive power; Sensitivity; Substations; Distribution locational marginal pricing (LMP); electric distribution system; loss sensitivity;
Journal_Title :
Power Systems, IEEE Transactions on
DOI :
10.1109/TPWRS.2013.2288022
