Mathematical development of the sampling frequency effects for improving the two-terminal traveling wave-based fault location

Lopes, Felipe V.; Silva, Kleber M.; Dantas, Karcius Marcelus Colaço; Franca, R. L. S.; Leal, Mônica Maria; Ribeiro, R.L.A.

doi:10.1016/j.ijepes.2019.105502

Cited by 15 publications

(4 citation statements)

References 39 publications

(98 reference statements)

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“…The travelling wave (TW) technique, also referred to as a high-frequency electromagnetic impulse, is propagated along the lines in both directions away from the fault point at almost the speed of light [7,108]. The system generally employs the transient signals generated by the fault as the main study [5][6][7]. The system needs very high data acquisition, a high speed flashing rate, a Global Positioning System (GPS), and a transient detector device, but the TW has a lack of capability to sense low-amplitude faults such as a "conductor in the snow" [109].…”

Section: Travelling Wave Methodsmentioning

confidence: 99%

“…As a counterpart to the transmission line, the DS is constructed of tapped lateral networks or branches that deliver power to the consumers. The monitoring of faults in the DS is more complex due to this convoluted construction [5][6][7]. The branches are exposed to various types of faults caused by several sources including climatic conditions, equipment failure, and natural phenomena.…”

Section: Introductionmentioning

confidence: 99%

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Transient Fault Detection and Location in Power Distribution Network: A Review of Current Practices and Challenges in Malaysia

et al. 2021

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An auto-restoration tool to minimize the impact of faults is one of the critical requirements in a power distribution system. A fault-monitoring system is needed for practical remote supervision to identify faults and reduce their impacts, and thus reduce economic losses. An effective fault-monitoring system is beneficial to improve the reliability of a protection system when faults evolve. Therefore, fault monitoring could play an important role in enhancing the safety standards of systems. Among the various fault occurrences, the transient fault is a prominent cause in Malaysia power systems but gains less attention due to its ability of self-clearance, although sometimes it unnecessarily triggers the operation of protection systems. However, the transient fault is an issue that must be addressed based on its effect that can lead to outages and short-circuits if prolonged. In this study, the authors summarize the guidelines and related standards of fault interaction associated with a monitoring system. The necessity of transient fault detection and location techniques and their limitations, the need for signal processing, as well as recommended practices, are also discussed in this paper. Some of the practices from local power utility are also shared, indicating the current approaches, key challenges, and the opportunities for improvement of fault-monitoring systems due to transient fault, which can be correlated with the reviews provided.

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Section: Travelling Wave Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transient Fault Detection and Location in Power Distribution Network: A Review of Current Practices and Challenges in Malaysia

et al. 2021

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“…Based on the analysis performed in [31], even in an ideal condition with the correct identification of the samples related to the TWs arrival, the fault location estimation may encounter an error due to signal sampling and the discrete sample times. According to Table I, the set sampling frequency is 250 kHz.…”

Section: B Performance With Lower Sampling Frequenciesmentioning

confidence: 99%

A Signal Segmentation Approach to Identify Incident/Reflected Traveling Waves for Fault Location in Half-Bridge MMC-HVdc Grids

Farshad

Karimi

2022

IEEE Trans. Instrum. Meas.

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This article presents a new systematic technique for identifying voltage traveling-waves (TWs) to determine the location of line faults in half-bridge modular multilevel converterbased high-voltage direct-current (HBMMC-HVDC) grids. In this technique, the buffered voltage signal frame around the faultdetection time is first scaled and then segmented via an optimization process. Finally, the incident/reflected TWs arrival times are obtained by executing a simple search algorithm on the reconstructed signal segments' differences. This article describes how to use this technique in three forms of TW-based fault location schemes, including the single-ended scheme with known TW velocity, the double-ended scheme with known TW velocity, and the double-ended scheme with unknown TW velocity. The application results on a 4-terminal HBMMC-HVDC grid simulated with exact component models show the proposed technique's high capability and accuracy in all the three TWbased fault-location schemes. According to these results, the average fault-location errors are less than 0.5% for all the schemes. The numerical results also confirm that the proposed technique maintains its excellent performance, even in the face of close to terminal faults with distances down to 4 km, faults with high resistances up to 450 , and noisy signals with signal-to-noise ratios down to 55 dB. Moreover, the comparison results confirm that the proposed approach is more tolerant of measurement noise than the wavelet transform.

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“…The sampling rate could play an important role here, as it ultimately determines the accuracy and the ability to detect higher order reflected waves. As detectors become more advanced, the sampling rate will increase, which opens up the possibility of detecting and subsequently finding arrival times and polarities for reflected waves more accurately [34].…”

Section: Proposed Online Algorithm For Fault Locationmentioning

confidence: 99%

A Travelling Wave-Based Fault Location Strategy Using the Concepts of Metric Dimension and Vertex Covers in a Graph

Maritz

Salehi

2021

IEEE Access

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Mathematical development of the sampling frequency effects for improving the two-terminal traveling wave-based fault location

Cited by 15 publications

References 39 publications

Transient Fault Detection and Location in Power Distribution Network: A Review of Current Practices and Challenges in Malaysia

Transient Fault Detection and Location in Power Distribution Network: A Review of Current Practices and Challenges in Malaysia

A Signal Segmentation Approach to Identify Incident/Reflected Traveling Waves for Fault Location in Half-Bridge MMC-HVdc Grids

A Travelling Wave-Based Fault Location Strategy Using the Concepts of Metric Dimension and Vertex Covers in a Graph

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