Wavelet Entropy Based Algorithm for Fault Detection and Classification in FACTS Compensated Transmission Line

Amany M. El-Zonkoly, Hussein Desouki

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DOI: 10.4236/epe.2011.31006                

Abstract

Distance protection of transmission lines including advanced flexible AC transmission system (FACTS) de-vices has been a very challenging task. FACTS devices of interest in this paper are static synchronous series compensators (SSSC) and unified power flow controller (UPFC). In this paper, a new algorithm is proposed to detect and classify the fault and identify the fault position in a transmission line with respect to a FACTS device placed in the midpoint of the transmission line. Discrete wavelet transformation and wavelet entropy calculations are used to analyze during fault current and voltage signals of the compensated transmission line. The proposed algorithm is very simple and accurate in fault detection and classification. A variety of fault cases and simulation results are introduced to show the effectiveness of such algorithm.

Keywords

FACTS, SSSC, UPFC, Wavelet Transform, Entropy Calculation

Conflicts of Interest

The authors declare no conflicts of interest.

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