A single-phase earth fault location scheme for distribution feeder on the basis of the difference of zero mode traveling waves

Zhou, Congcong; Shu, Qin; Han, Xiaoyan

doi:10.1002/etep.2298

Cited by 24 publications

(19 citation statements)

References 23 publications

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“…This method requires the data training. Moreover, a single phase to ground fault localization method [24] used the fault characteristics include in zero sequence voltages and currents. However, the method is suitable for radial distribution systems.…”

Section: Introductionmentioning

confidence: 99%

A simple faulted phase-based fault distance estimation algorithm for a loop distribution system

Myint

Wichakool

2022

IJEECS

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This paper presents a single ended faulted phase-based traveling wave fault localization algorithm for loop distribution grids which is that the sensor can get many reflected signals from the fault point to face the complexity of localization. This localization algorithm uses a band pass filter to remove noise from the corrupted signal. The arriving times of the faulted phase-based filtered signals can be obtained by using phase-modal and discrete wavelet transformations. The estimated fault distance can be calculated using the traveling wave method. The proposed algorithm presents detail level analysis using three detail levels coefficients. The proposed algorithm is tested with MATLAB simulation single line to ground fault in a 10 kV grounded loop distribution system. The simulation result shows that the faulted phase time delay can give better accuracy than using conventional time delays. The proposed algorithm can give fault distance estimation accuracy up to 99.7% with 30 dB contaminated signal-to-noise ratio (SNR) for the nearest lines from the measured terminal.

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Section: Introductionmentioning

confidence: 99%

A simple faulted phase-based fault distance estimation algorithm for a loop distribution system

Myint

Wichakool

2022

IJEECS

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“…The transient signal is less affected by the neutral grounding mode, which makes it has a wider potential application. It is efficient to use the zerosequence current travelling wave to detect the faulty feeder even when the fault resistance is high [13]- [14]. However, it is difficult to detect the faulty feeder when the voltage inception angle is near zero.…”

Section: Introductionmentioning

confidence: 99%

Location of Single Phase to Ground Faults in Distribution Networks Based on Synchronous Transients Energy Analysis

Wang

Zhang

Shi

et al. 2020

IEEE Trans. Smart Grid

128

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As a result of small fault current, high level of noise and a large penetration of distributed generators (DG), in the neutral non-effectively grounded medium-voltage (MV) distribution networks, it is quite difficult to locate the faulted line section for single phase to ground faults. In this paper, using a technique based on synchronized measurements in distribution networks, a fault location method based on the analysis of the energy of the transient zero-sequence current in the selected frequency band (SFB) is proposed. The equivalent impedance of the distribution network with lateral branches is studied with an equivalent network, and the phase-frequency characteristics of the equivalent impedance are analyzed. The SFB, within which the transient energy of the faulty line section is larger than that of the healthy line sections is determined. A combined fault-section location criterion is proposed and the implementation scheme is illustrated with the distribution level phasor measurement units. Numerical simulations of the IEEE 34 node system and the field experiments of a 10kV distribution network validate the feasibility and effectiveness of the proposed method.Index Terms--Active distribution networks, fault location, neutral non-effectively grounded system, single phase to ground faults, transient zero-sequence current.

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“…In addition, the RS-dimension method based on fractal dimension is proposed in [8]. [9], [10] and [11] present new methods based on correlation methods and travelling-wave method respectively. However, unknown and wide range of ground resistance would influence the accuracy of passive methods.…”

Section: Introductionmentioning

confidence: 99%

A new active method for ground fault location in small current grounding system

Wang

Yong

et al. 2018

2018 18th International Conference on Harmonics and Quality of Power (ICHQP)

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A new method for single-phase grounding fault location in small current grounding system is proposed, in which thyristor-based signal generator (SG) and signal detectors (SD) are included. The thyristor-based SG is connected between the phase line and ground, and SDs are arrayed along the distribution lines. After a single-phase grounding fault occurs, any thyristor connected between non-faulted phase and ground will be triggered. An active and highly distinguishable current is superimposed on line current. Based on strength estimation and feature analysis of the active signal, double-subtraction algorithm is proposed, detection parameters are selected, and the detection criterions are determined. At last, sensitivity analysis and verification studies demonstrate the efficiency and reliability of this method, which meets the demand of the practical engineering very well.

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A single-phase earth fault location scheme for distribution feeder on the basis of the difference of zero mode traveling waves

Cited by 24 publications

References 23 publications

A simple faulted phase-based fault distance estimation algorithm for a loop distribution system

A simple faulted phase-based fault distance estimation algorithm for a loop distribution system

Location of Single Phase to Ground Faults in Distribution Networks Based on Synchronous Transients Energy Analysis

A new active method for ground fault location in small current grounding system

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