Journal ArticleDOI
Microprocessor-based UHS relaying for distance protection using advanced generation signal processing
Papiya Dutta,P.B. Dutta Gupta +1 more
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TLDR
Three distinct types of UHS relaying realization in distance protection via advanced-generation digital signal processing, possible with cheap and readily available VLSI chips, are considered.Abstract:
UHS (ultra high speed) refers to operating times of less than 5 ms on 50 Hz power systems. Three distinct types of UHS relaying realization in distance protection via advanced-generation digital signal processing, possible with cheap and readily available VLSI chips, are considered. Type I is the correlator detector: Type II and III are the spectrum and cepstrum analyzers, respectively. The performance of these detectors is evaluated with respect to varying system configurations that complicate the post fault signals. Microprocessor implementation of these techniques show that 5 ms limit is achieved in Type I and II detectors, whereas the Type III detector can operate in 3 ms. >read more
Citations
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Journal ArticleDOI
Application of wavelet transform in travelling wave protection
TL;DR: In this paper, the correlation function-based travelling wave protection algorithm is analysed from the viewpoint of wavelet transform (WT), and a wavelet correlation function (WCF) algorithm is proposed to replace it.
Journal ArticleDOI
Adaptive travelling wave protection algorithm using two correlation functions
TL;DR: In this paper, an auxiliary cross-correlation function (CCF) is proposed to act as its complement, which takes advantage of the signal that causes the inaccuracies of the standard CCF.
Journal ArticleDOI
An overview of digital fault location algorithms for power transmission lines using transient waveforms
Bao Lian,Magdy M. A. Salama +1 more
TL;DR: A digital fault location algorithm for calculating the fault distance on a power transmission line can be designed using any of three approaches: the steady-state phasor approach, the differential equation approach and the travelling-wave approach as mentioned in this paper.
Book Chapter
Power System Protective Relaying : basic concepts, industrial-grade devices, and communication mechanisms
TL;DR: Power System Protective Relaying as discussed by the authors : basic concepts, industrial-grade devices, and communication mechanisms for power system protection relaying, basic concepts and industrial grade devices for communication mechanisms.
Wide-Area Adaptive Protection Using Distributed Control and High-Speed Communications
TL;DR: In this paper, the authors proposed a wide-area adaptive protection using distributed control and high-speed communications may reduce the likelihood of catastrophic failures in power systems and suggest a communication and control structure designed to avoid and/or reduce the impact of misoperations of protection devices.
References
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Journal ArticleDOI
The cepstrum: A guide to processing
TL;DR: The power, complex, and phase cepstra are shown to be easily related to one another, and the interpretation and processing of data in such areas as speech, seismology, and hydroacoustics is discussed.
Journal ArticleDOI
Nonlinear filtering of multiplied and convolved signals
TL;DR: In this article, a generalized notion of superposition has been proposed for nonlinear filtering of signals which can be expressed as products or as convolutions of components, and applications of this approach in audio dynamic range compression and expansion, image enhancement with applications to bandwidth reduction, echo removal, and speech waveform processing are presented.
Journal ArticleDOI
Application of matrix methods to the solution of travelling-wave phenomena in polyphase systems
TL;DR: In this paper, the authors presented a solution to the single-conductor wave equation, and developed the solution for the 2-conductor case by classical methods, and then indicated the rapidly growing complexity of the problem with increasing numbers of conductors when solving by conventional methods.
Journal ArticleDOI
Distance Protection Based on Travelling Waves
P. A. Crossley,P. G. McLaren +1 more
TL;DR: In this paper, a technique for rapid measurement of the distance to a fault using fault-initiated travelling waves is presented. But the measurement uses the time it takes a given surge to travel from the relaying point to the fault and back.
Journal ArticleDOI
A technique for estimating transmission line fault locations from digital impedance relay measurements
M.S. Sachdev,R. Agarwal +1 more
TL;DR: In this article, a technique for estimating locations of shunt faults using post fault fundamental-frequency voltages and currents measured at the two line terminals is presented, where the measurements need not be synchronized, and the source impedances are not used by the estimation procedure.