A transient stability assessment method using post-fault trajectories

Author

Kyriakidis, T. ; Lanz, G. ; Cherkaoui, R. ; Kayal, Maher

Author_Institution

Electron. Lab. & Power Syst. Group, Swiss Fed. Inst. of Technol., Lausanne, Switzerland

fYear

2013

fDate

16-20 June 2013

Firstpage

1

Lastpage

4

Abstract

Transient Stability Assessment (TSA) is the process in which the stability of a system is characterized qualitatively or quantitatively. The TSA algorithm presented in this paper is derived from the well-established Single Machine Equivalent (SIME) method and can thus be categorized as a hybrid direct-temporal method. The novelty of the proposed algorithm is that it derives a Transient Stability Index (TSI) with a single TimeDomain (TD) simulation for both stable and unstable cases. The resulting TSI is uniform in units and linear around the instability point. Results are reported for two sample power systems of 9 and 36 buses. The proposed algorithm has also been successfully employed to speed-up a Critical Clearing Time (CCT) determination algorithm.

Keywords

power system faults; power system stability; critical clearing time determination algorithm; hybrid direct-temporal method; post-fault trajectories; single machine equivalent method; single time-domain simulation; transient stability assessment method; Indexes; Numerical stability; Power system stability; Stability criteria; Transient analysis; SIME method; power system dynamics; timedomain simulation; transient stability assessment;

fLanguage

English

Publisher

ieee

Conference_Titel

PowerTech (POWERTECH), 2013 IEEE Grenoble

Conference_Location

Grenoble

Type

conf

DOI

10.1109/PTC.2013.6652132

Filename

6652132