available transfer capability (ATC); dynamic line rating (DLR); heat balance equation; loadability; total transfer capability (TTC)
Issue Date
2011-01
Publisher
VDE VERLAG GMBH
Citation
EUROPEAN TRANSACTIONS ON ELECTRICAL POWER, v. 21, NO 1, Page. 855-864
Abstract
Total Transfer Capability (TTC) should be pre-determined in order to estimate Available Transfer Capability (ATC). Typically, TTC is determined by considering three categories; voltage, stability, and thermal limits. Among these, thermal limits are treated mainly in this paper on the evaluation of TTC due to the relatively short transmission line length of Korea Electric Power Corporation (KEPCO) system. This paper presents a new approach to evaluate the TTC using the Dynamic Line Rating (DLR) for the thermal limit. Since the approach includes not only traditional electrical constraints but also real-time environmental constraints, this paper obtains more cost-effective and exact results. A case study using KEPCO system confirms that the proposed method is useful for real-time operation and the planning of the electricity market.