Journal ArticleDOI
A new non-communication protection technique for transmission lines
TLDR
In this article, a multi-channel filter unit is applied to the captured signals to extract desired bands of high frequency signals, and a comparison between the spectral energies of different bands of the filter outputs determines whether a fault is internal or external to the protected zone.Abstract:
This paper proposes a new noncommunication protection technique for transmission line protection. The technique relies on firstly the detection of fault generated high frequency current transient signals. A specially designed multi-channel filter unit is then applied to the captured signals to extract desired bands of high frequency signals. Comparison between the spectral energies of different bands of the filter outputs determines whether a fault is internal or external to the protected zone. In addition to the saving in costs through negating the need for a communication link, the technique also retains many advantages of the 'transient based protection' technology, such as insensitivity to fault type, fault position, fault path resistance and fault inception angle. It is also not affected by CT saturation, the power frequency short-circuit level at the terminating busbar or the precise configuration of the source side networks.read more
Citations
More filters
Journal ArticleDOI
Fault Analysis and Traveling-Wave Protection Scheme for Bipolar HVDC Lines
Ying Zhang,Nengling Tai,Bin Xu +2 more
TL;DR: In this article, the authors proposed a fault classification and faulty-pole selection based on zero and positive-sequence backward traveling waves, and an integrated traveling wave-based protection scheme was proposed.
Journal ArticleDOI
Hybrid Traveling Wave/Boundary Protection for Monopolar HVDC Line
TL;DR: In this article, a hybrid protection algorithm based on traveling wave protection principle and boundary protection principle for a monopolar HVDC line is proposed, and the effect of border distortion, noise, high ground fault resistance, close-up faults, transients caused by lightning strokes and different dc line terminations are considered.
Journal ArticleDOI
Usage of wavelet transform in the protection of series-compensated transmission lines
TL;DR: In this paper, a new method for the boundary protection of series-compensated transmission lines, as well as fault classification is presented, which is based on detecting distinct frequency bands contained in the transient fault current wave.
Journal ArticleDOI
Transmission Line Boundary Protection Using Wavelet Transform and Neural Network
Nan Zhang,Mladen Kezunovic +1 more
TL;DR: An improved solution based on wavelet transform and self-organized neural network that uses both low and high frequency information of the fault signal to achieve an advanced line protection scheme.
Journal ArticleDOI
Ultra-high-speed directional protection of transmission lines using mathematical morphology
TL;DR: In this article, a novel ultra-high-speed directional protection scheme developed using mathematical morphology (MM) was proposed to extract transient features from faultgenerated voltage and current wave signals propagating along transmission lines during a post-fault period.
References
More filters
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
Ultra High Speed Relay for EHV/UHV Transmission Lines -- Development, Design and Application
M. Chamia,S. Liberman +1 more
TL;DR: In this article, a traveling wave approach is used to detect and determine the direction to a fault in a few milliseconds, and the first relay system was installed in the USA in Bonneville Power Administration's 500 kV system and represents a substantial contribution to present efforts to shorten fault clearing times as a method to improve system stability and power transfer capability.
Journal ArticleDOI
A Fundamental Concept for High Speed Relaying
TL;DR: In this article, a fundamental approach for detecting the direction to a power system fault within the first milliseconds following the fault inception is described, based on a combined evaluation of the voltage and current deviations generated by the fault occurrence.
Journal ArticleDOI
Non-unit protection technique for EHV transmission systems based on fault-generated noise. Part 1: signal measurement
A.T. Johns,R.K. Aggarwal,Z.Q. Bo +2 more
TL;DR: The paper describes the signal processing techniques developed for a new protection technique for EHV transmission lines that utilises fault-generated high-frequency signals derived from the signal measurement circuit to determine whether the fault is internal or external to the protected zone.
Journal ArticleDOI
Scheme, based on travelling-waves, for the protection of major transmission lines
TL;DR: In this article, the authors present an analytical treatment to indicate how the initial travelling wave propagated from a fault and a later wave resulting from a reflection at the fault position may be identified.
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