An Alternative Method for Locating Faults in Transmission Line Networks Based on Time Reversal

Codino, Asia; Wang, Zhaoyang; Razzaghi, Reza; Paolone, Mario; Rachidi, Farhad

doi:10.1109/temc.2017.2671369

Cited by 63 publications

(29 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…• The true fault location can be identified by different metrics, including fault current signal energy (FCSE) [9], fault voltage signal energy (FVSE) [15] and voltage argument (VA) [14]. In the next section, we focus on the analysis of the similarity between the time-domain waveforms of the back-injected transient signal and fault current signal observed at guessed fault locations.…”

Section: B Emtr-based Fault Location Proceduresmentioning

confidence: 99%

“…Note that, it has been shown that the hypothesis of considering a lossless medium does not impact the generality of the EMTR-based fault location method [21] In addition, the line is considered to be terminated at both ends on power transformers. As discussed in [9], [10] and [14], for the electromagnetic transients characterised by a spectrum with frequencies up to hundreds of kHz, the terminal…”

Section: A Direct-time Stage: Fault Occurrencementioning

confidence: 99%

“…Superior performance is provided by this method in terms of high location accuracy and robustness against fault impedance and measurement noise. Later on, using the property of EMTR in changing media, an extension of the EMTR-based fault location method is proposed and validated in [14] and [15]. Compared to the classical method that relies on the matched-media condition to characterise the true fault location with maximum energy concentration, the unmatched media-based procedure focuses on the analysis of the voltage signal observed along the backward-propagation model.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electromagnetic Time Reversal Applied to Fault Location: On the Properties of Back-Injected Signals

Wang¹,

Razzaghi

Paolone

et al. 2018

2018 Power Systems Computation Conference (PSCC)

Self Cite

View full text Add to dashboard Cite

By using the electromagnetic time reversal (EMTR) theory, the paper studies its properties in order to derive a new fault location method to be used in power networks. It is shown that, in the reversed-time stage, the current signal observed at the true fault location can be clearly distinguished since it appears as a time-delayed copy of the back-injected fault-originated transient signal. Then, based on this similarity property, a fault location method is derived. Finally, the method is numerically validated with reference to a reproducible simulated power network composed of an inhomogeneous multi-conductor transmission-line system.

show abstract

Section: B Emtr-based Fault Location Proceduresmentioning

confidence: 99%

Section: A Direct-time Stage: Fault Occurrencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electromagnetic Time Reversal Applied to Fault Location: On the Properties of Back-Injected Signals

Wang¹,

Razzaghi

Paolone

et al. 2018

2018 Power Systems Computation Conference (PSCC)

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, the fault is located in the mirror line and calculated through two or more observers. Based on the time reversal theory, the feasibility of fault location in the field of ultrahigh frequency is proved in reference [21][22][23]. This method is applied to the fault location of AC power networks by only using a single observer.…”

Section: Introductionmentioning

confidence: 99%

A Fault Line Selection Method for DC Distribution Network Using Multiple Observers

Tai

Zheng

et al. 2019

Energies

View full text Add to dashboard Cite

This paper proposes a method of fault line selection for a DC distribution network. Firstly, the 1-mode current is calculated using the measured currents of the positive and the negative line. Then, it is time reversed and further decomposed by wavelet technology. Secondly, the lossless mirror line network is established according to the parameters and the topology of the DC distribution network. Thirdly, it is presumed that several virtual current sources are employed at the locations where the corresponding observers are, and the values of these current sources are equal to the processed 1-mode currents. Fourthly, a fault is placed at every point of the lossless mirror line network the RMS value of every assumed fault current is calculated. During this process, the phase coefficient of every lossless mirror line is set to vary along with the length of the line obeying Gaussian distribution. Finally, the line with the peak value of the RMS values of the currents is selected as the fault line. The result of fault line selection is updated using the fewest observers that are set in advance according to the initial result. A DC distribution network is simulated in PSCAD/EMDTC to verify the correctness of the proposed method.

show abstract

“…At present, the actual status of advancement in this context is stuck in a controversial situation, where there are, on the one side, a lot of research efforts that explore a wide range of new and alternative monitoring techniques, such as the ones employing electromagnetic (EM) techniques [9][10][11][12][13][14], vibro-acoustic techniques [15], information technology (IT) solutions [16,17], and drones [17,18], whereas, on the other side, in the real-world, monitoring activity is mainly still linked with manual inspection methodologies using thermo-graphic cameras recordings [19,20].…”

Section: Introductionmentioning

confidence: 99%

Remote Monitoring of Joints Status on In-Service High-Voltage Overhead Lines

et al. 2019

View full text Add to dashboard Cite

This work presents the feasibility study of an on-line monitoring technique aimed to discover unwanted variations of longitudinal impedance along the line (also named “impedance discontinuities”) and, possibly, incipient faults typically occurring on high voltage power transmission lines, like those generated by oxidated midspan joints or bolted joints usually present on such lines. In this paper, the focus is placed on the application and proper customization of a technique based on the time-domain reflectometry (TDR) technique when applied to an in-service high-voltage overhead line. An extensive set of numerical simulations are provided in order to highlight the critical points of this particular application scenario, especially those that concern the modeling of both the TDR signal injection strategy and the required high-voltage coupling devices, and to plan a measurement activity. The modeling and simulation approach followed for the study of either the overhead line or the on-line TDR system is fully detailed, discussing three main strategies. Furthermore, some measurement data that were used to characterize the specific coupling device selected for this application at high frequency—that is, a capacitive voltage transformer (CVT)—are presented and discussed too. This work sets the basic concepts underlying the implementation of an on-line remote monitoring system based on reflectometric principles for in-service lines, showing how much impact is introduced by the high-voltage coupling strategy on the amplitude of the detected reflected voltage waves (also named “voltage echoes”).

show abstract

An Alternative Method for Locating Faults in Transmission Line Networks Based on Time Reversal

Cited by 63 publications

References 40 publications

Electromagnetic Time Reversal Applied to Fault Location: On the Properties of Back-Injected Signals

Electromagnetic Time Reversal Applied to Fault Location: On the Properties of Back-Injected Signals

A Fault Line Selection Method for DC Distribution Network Using Multiple Observers

Remote Monitoring of Joints Status on In-Service High-Voltage Overhead Lines

Contact Info

Product

Resources

About