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Adaptive Filtering Technique and DSP Based Implementation for High-Speed Distance Protection

Shenoy, UJ and Shastry Bhargava, S and Satheesh, KR and Kavyashree, BS (2007) Adaptive Filtering Technique and DSP Based Implementation for High-Speed Distance Protection. In: 4th International Conference on Power System Protection and Automation, 21–22 November 2007, New Delhi, India.

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Official URL: http://indianjournals.com/ijor.aspx?target=ijor:we...

Abstract

The paper presents an adaptive Fourier filtering technique and a relaying scheme based on a combination of a digital band-pass filter along with a three-sample algorithm, for applications in high-speed numerical distance protection. To enhance the performance of above-mentioned technique, a high-speed fault detector has been used. MATLAB based simulation studies show that the adaptive Fourier filtering technique provides fast tripping for near faults and security for farther faults. The digital relaying scheme based on a combination of digital band-pass filter along with three-sample data window algorithm also provides accurate and high-speed detection of faults. The paper also proposes a high performance 16-bit fixed point DSP (Texas Instruments TMS320LF2407A) processor based hardware scheme suitable for implementation of the above techniques. To evaluate the performance of the proposed relaying scheme under steady state and transient conditions, PC based menu driven relay test procedures are developed using National Instruments LabVIEW software. The test signals are generated in real time using LabVIEW compatible analog output modules. The results obtained from the simulation studies as well as hardware implementations are also presented.

Item Type: Conference Paper
Keywords: Fourier filtering technique;Digital band-pass filter;Window algorithm;High-speed detection;PC based menu driven.
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 19 Oct 2011 07:39
Last Modified: 19 Oct 2011 07:39
URI: http://eprints.iisc.ernet.in/id/eprint/41510

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