A Study on the Direct Stability Analysis of Multi-Machine Power System With Resistive SFCL

• Published in: IEEE transactions on applied superconductivity Vol. 22; no. 3; p. 5602304
• Main Authors: GUM TAE SON, LEE, Hee-Jin, LEE, Soo-Young, PARK, Jung-Wook
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Circuit stability; Clearing; Connection and protection apparatus; Critical clearing time; direct stability analysis; Electrical engineering. Electrical power engineering; Electrical power engineering; Exact sciences and technology; Faults; Miscellaneous; multi-machine system; Potential energy; Power networks and lines; Power system stability; resistive superconductive fault current limiter (SFCL); Stability; Stability analysis; Stability criteria; Studies; Superconductivity; Superconductors; Transient analysis; Transient energy function; transient energy function (TEF); Transient stability; Energy function; Critical clearing time; Protective device; transient energy function (TEF); Stability criterion; Infinite system; Transient stability; Fault current limiters; Damage prevention; Transient method; Bus system; direct stability analysis; Multimachine power system; Electrical network; multi-machine system; resistive superconductive fault current limiter (SFCL)
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2011.2177626

This paper describes a method for analyzing the direct stability of a multi-machine system that consists of three machines and one resistive superconductive fault current limiter (SFCL). The resistive SFCL, which affects the transient stability of a multi-machine power system, must be taken into account. In order to evaluate the transient stability in the power system, a direct stability analysis that has rapid prediction stability is used. Although the equal-area criterion method is useful in determining the stability as a transient stability evaluation method, the method is only applicable to a one-machine system connected to an infinite bus or to a two-machine system. Therefore, the transient energy function (TEF) should be constructed. Using the TEF, the effect of the SFCL in the multi-machine system can be identified by increasing the critical clearing time.