Detection of transiently chaotic swings in power systems using real-time phasor measurements

Author

Liu, Chih-Wen ; Thorp, James S. ; Lu, Jin ; Thomas, Robert J. ; Chiang, Hsiao-Dong

Author_Institution

Cornell Univ., Ithaca, NY, USA

Volume

9

Issue

3

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1285

Lastpage

1292

Abstract

In this paper, the concepts of transiently chaotic swings and windowed Lyapunov exponents in power system dynamics are described. An efficient computer method to detect a transiently chaotic swing from a set of real-time phasor measurements is presented. The method estimates the largest windowed Lyapunov exponent, λˆ_[NΔT]¹ as a detection index. In simulation results, it is shown that the proposed method has the potential to detect a transiently chaotic swing and the estimated λˆ_[NΔT]¹ can be used as an online stability index to predict multi-swing transient instability

Keywords

Lyapunov methods; computerised instrumentation; digital simulation; power system analysis computing; power system measurement; power system stability; power system transients; real-time systems; computer simulation; detection index; multi-swing transient instability; online stability index; power system dynamics; real-time phasor measurements; transiently chaotic swings; windowed Lyapunov exponents; Chaos; Control systems; Power measurement; Power system dynamics; Power system measurements; Power system relaying; Power system restoration; Power system stability; Power system transients; Real time systems;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.336138

Filename

336138