A Study on the Decomposition of Nodal Price for the Zonal Evaluation of System Loss & Congestion Cost

손실 및 혼합비용의 지역별 산정을 위한 모선한계가격의 분해에 관한 연구

This paper presents the detailed derivation of optimal nodal price for active power to regionally evaluate system loss and congestion cost. The method is to decompose them into different components corresponding to system loss, transmission congestion, voltage constraint, and so on. The decomposed information for nodal price can be used to provide economic signals for generation or transmission investment as well as to improve the efficient usage of power grid and congestion management. The result of case study on IEEE 30 bus system is reported to illustrate the proposed method.