Real-Time Traveling-Wave-Based Fault Location Using Two-Terminal Unsynchronized Data

Lopes, Felipe V.; Silva, Kleber M.; Costa, F. B.; Neves, Washington Luiz Araújo; Fernandes, Darlan A.

doi:10.1109/tpwrd.2014.2380774

Cited by 109 publications

(46 citation statements)

References 22 publications

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“…To overcome the limitations associated with the phasorbased fault location methods, travelling wave-based methods have been increasingly investigated in the literature (e.g., [7], [8], [9], [10]). These methods rely on the analysis of the highfrequency components of the fault-originated transient signals which are rather uninfluenced by the fault impedance [11].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Influence of Losses on the Performance of the Electromagnetic Time Reversal Fault Location Method

Razzaghi

Lugrin

Rachidi

et al. 2017

IEEE Trans. Power Delivery

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Abstract-Electromagnetic time reversal (EMTR) has beenshown to be an efficient method for locating faults in AC and DC power grids. In the available literature, the back-propagation medium has been considered to have identical losses as the directtime medium. However, the telegrapher's equations describing the travelling wave propagation are time-reversal invariant if and only if inverted losses are considered in the back propagation phase. This paper presents an analysis of the impact of losses on the performance of the EMTR-based fault location method for power networks. In this respect, three back-propagation models are proposed, analyzed and compared. It is shown that a lossy back-propagation model, for which the wave equations are not rigorously time-reversal invariant, results in accurate fault locations. Finally, an EMTR fault location system based on the lossy back-propagation model and a fast electromagnetic transient simulation platform is developed and its performances validated.

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Section: Introductionmentioning

confidence: 99%

Assessment of the Influence of Losses on the Performance of the Electromagnetic Time Reversal Fault Location Method

Razzaghi

Lugrin

Rachidi

et al. 2017

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

show abstract

“…The classical fault location algorithms were proposed in the 1980s [8][9][10]. After that, there appeared many fault location algorithms [11][12][13][14][15][16][17][18][19][20][21][22][23]. Transmission line fault location techniques can be mainly divided into three categories [11][12][13]: single-ended data method [8][9][10], dual-ended data method [13][14][15][16][17][18][19] and traveling wave method [6,7] [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

A new technique based on fundamental frequency positive sequence fault components for fault location

Zhao

Zhu

2020

IEEJ Transactions Elec Engng

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This paper presents a new fault location technique based on the fundamental frequency positive sequence fault components, featuring robustness to the operating state of the prefault system and fault path resistance. Using the fundamental frequency positive sequence fault components, the technique described in this paper does not require the user to know the fault phases and fault type in advance or use a line zero sequence parameter, which is not only difficult to obtain but is also affected by soil resistivity and thus may be variable. In addition, based on the fault components protection principle, the method is inherently unaffected by the operating state of the prefault system. Accurate transmission lines' fault location is important for expediting their repair or reducing outage times, so the proposed technique could improve the quality and security of the electricity supply. This paper describes the characteristics of the proposed technique and assesses its performance by using the PSCAD/EMTDC simulation. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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“…Based on the above TW methods, more improved asynchronous fault location methods have been proposed [22][23][24][25][26], which are independent from the effect of wave velocities. Most of these methods are in the time domain.…”

Section: Introductionmentioning

confidence: 99%

“…This is a easily neglected problem. Reference [23] gives a method for identifying the reflected wave from a fault point, which is based on the fault position estimation proposed by [26]. The communication system latency is considered to create a fault area to make sure the time stamp of the reflected wave from the fault point can be correctly identified.…”

Section: Introductionmentioning

confidence: 99%

Asynchronous Fault Location in Transmission Lines Considering Accurate Variation of the Ground-Mode Traveling Wave Velocity

et al. 2017

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This paper proposes a grounding fault location method in transmission lines based on time difference of arrival (TDOA) of ground-mode and aerial-mode traveling waves (TWs). The frequency-dependent characteristics of transmission lines cause different frequencies to have different attenuations and phase lags of different frequency components in traveling waves, which leads to the change of TWs velocities with different propagation distances. Due to these different propagation paths, the wave velocity variations of ground-mode should be considered as a main variable while the velocity of aerial-mode can be seen as a constant factor. A quadratic function that can illustrate the tendency of variation of ground-mode wave velocity is proposed by considering the relation between the wave velocity and fault distance. The least squares method is used to solve the quadratic function of different lines. Combining the quadratic formula and the incident TWs of each mode detected at both terminals of the line, a novel fault location method is proposed. First, according to the maximum and minimum ground-mode velocities, a fault scope can be acquired. Then, more accurate fault scopes and ground-mode velocities can be obtained by iteration computation. Finally, an accurate fault position is acquired when the fault scope is sufficiently small. PSCAD/EMTDC software is used to conduct fault simulations in order to verify the feasibility and accuracy of the method.

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Real-Time Traveling-Wave-Based Fault Location Using Two-Terminal Unsynchronized Data

Cited by 109 publications

References 22 publications

Assessment of the Influence of Losses on the Performance of the Electromagnetic Time Reversal Fault Location Method

Assessment of the Influence of Losses on the Performance of the Electromagnetic Time Reversal Fault Location Method

A new technique based on fundamental frequency positive sequence fault components for fault location

Asynchronous Fault Location in Transmission Lines Considering Accurate Variation of the Ground-Mode Traveling Wave Velocity

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