Transmission congestion analysis in the Eastern Interconnection using POMS

A methodology based on the security-constrained unit commitment (SCUC) is applied to analyze the transmission congestion in the Eastern Interconnection of the United States for 2008 and 2018. The proposed SCUC tool for this study is referred to as the POwer Market Simulator (POMS). The identified congestions are visualized along with the Geographical Information System (GIS) data and compared with the results published by the U.S. Department of Energy´s National Electric Transmission Congestion Study (NETCS) in 2006. The POMS study also provides the locational marginal price (LMP) information in the Eastern Interconnection, which is not available in the NETCS report. The POMS simulation results for representing congested branches and LMPs could be applied to the future transmission expansion planning studies.