An Improved Iterative Method for Assessment of Multi-Swing Transient Stability Limit

• Published in: IEEE transactions on power systems Vol. 26; no. 4; pp. 2023 - 2030
• Main Authors: Minghui Yin, Chung, C. Y., Wong, K. P., Yusheng Xue, Yun Zou
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-11-2011; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Assessments; Conferences; Equal area criterion; Equivalence; Extended equal area criterion (EEAC); Iterative methods; multi-swing stability limit; Power system interconnection; Power system stability; power system transient stability; Power system transients; Searching; single machine equivalent (SIME); Stability; Stability criteria; Studies; Transient stability
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/TPWRS.2011.2109970

This paper addresses the issue of improving the conventional iterative method used for integrated extended equal area criterion (IEEAC) and single machine equivalent (SIME) for multi-swing transient stability limit analysis in power system operation. Effects of the complicated phenomena on the conventional method, i.e., nonmonotonic variation of the stability margin and the isolated stability domain (ISD), are studied. Accordingly, the conventional method is improved for both efficiency and accuracy. With this knowledge, an improved sensitivity-based iterative method for searching multi-swing transient stability limit is proposed. The advantage of this method is that the complicated phenomena are fully considered and their effects are either overcome or avoided as much as possible. Case studies on the ten-generator New England power system are presented to verify the effectiveness and efficiency of this improved method.