High accuracy location of faults on electrical lines using digital processing of sampled data records from a reflectogram
- 13 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
A signal processing algorithm is developed to estimate the location of a discontinuity, e.g. a fault, on an electrical line. It is applied to fast sampled data and performs pecstral analysis of pulsed signals. The pecstrum algorithm is based on a transform similar to the one used in the cepstrum technique. It is demonstrated both theoretically and experimentally that the performance of the pecstrum estimator is significantly better than that of previously proposed methods. The proposed solution is operational in industrial digital reflectometers and has proved to be robust and successful in practice. With respect to cable-fault location, accuracies up to 30 cm are obtained when a fast, 20-MHz, 8-bit sampler is used for the acquisition of pulsed signals in a reflectogram.Keywords
This publication has 11 references indexed in Scilit:
- The application of cepstrum technique in power cable fault detectionPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Long-printed circuit delay linesNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1985
- Cepstral processing using spread spectra for cable diagnosticsIEEE Transactions on Instrumentation and Measurement, 1981
- High-Accuracy Analog Measurements via Interpolated FFTIEEE Transactions on Instrumentation and Measurement, 1979
- On the use of windows for harmonic analysis with the discrete Fourier transformProceedings of the IEEE, 1978
- The cepstrum: A guide to processingProceedings of the IEEE, 1977
- Cable-fault location by impulse-current methodProceedings of the Institution of Electrical Engineers, 1975
- A note on the transition (rise) time versus line length in coaxial cablesIEEE Transactions on Circuit Theory, 1973
- Coaxial-Line Pulse-Response Error Due to a Planar Skin-Effect ApproximationIEEE Transactions on Instrumentation and Measurement, 1972
- Transient analysis of coaxial cables using the skin effect approximationA+Bsqrt{s}IEEE Transactions on Circuit Theory, 1972