Detection of High Impedance Fault in Distribution Networks

Sekar, Kavaskar; Mohanty, Nalin Kant

doi:10.1016/j.asej.2018.04.006

Cited by 37 publications

(13 citation statements)

References 20 publications

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“…Kavaskar et al [20][21][22][23][24] has underwent many studies in their research work with high impedance fault events like switching of load at linear and non-linear states, switching of capacitance, inrush current of transformers in their studies.…”

Section: ░ 3 Methodology and Proceduresmentioning

confidence: 99%

Behavioral Dynamics of High Impedance Fault Under Different Line Parameters

Lavanya

Prabakaran

Kumar

2022

IJEER

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Predominantly the impedance faults can be classified as Low Impedance Faults (LIF) and High Impedance Faults (HIF). The LIF can be detected and protected by a conventional protective device. However, if High impedance fault occurs in the system, it is difficult to detect because of the low magnitude current. The overcurrent relay, which smartly detects the Low impedance faults, fails to detect the High impedance faults. This research work is organized as two components. In the first component some literatures regrading high impedance fault have been reviewed. In the second component classical modified several Emmanuel arc model is taken as the test system. Feeder number four is taken as the candidate feeder for testing the high impedance faults. The simulation is done through MATLAB and the results are obtained. From the results certain investigations are proposed.

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Section: ░ 3 Methodology and Proceduresmentioning

confidence: 99%

Behavioral Dynamics of High Impedance Fault Under Different Line Parameters

Lavanya

Prabakaran

Kumar

2022

IJEER

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“…It can be seen from the figure that most of the arc ground fault data falls within the safety boundary, that is, the safety boundary can more accurately distinguish arc ground faults from other faults. 4) For the arc grounding system of the distribution network, the identification of high resistance grounding faults is a difficult point (Kavaskar and Mohanty, 2019). The arc high-resistance fault has obvious intermittent, the phase voltage is basically unchanged, the zero-off time is long, and it lasts for several cycles intermittently.…”

Section: Model Identification Verificationmentioning

confidence: 99%

Research on arc grounding identification method of distribution network based on waveform subsequence segmentation-clustering

Li²,

Long³

et al. 2023

Front. Energy Res.

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The traditional method of detecting fault current based on threshold judgment method is limited by the current size and is easily disturbed by noise, and it is difficult to adapt to the arc ground fault detection of the distribution network. Aiming at this problem, this paper proposes a single-phase arc-optic ground fault identification method based on waveform subsequence splitting fault segmentation, combined with three-phase voltage-zero sequence voltage waveform feature extraction clustering. First of all, the waveform fault segment is segmented and located, secondly, the characteristic indexes of the time domain and frequency domain of the combined three-phase voltage-zero sequence voltage waveform are established, and the multidimensional feature distribution is reduced by the principal component analysis method, and finally, the characteristic distribution after the dimensionality reduction is identified by the K-means clustering algorithm based on the waveform subsequence. Experimental results show that the arc light grounding fault identification method proposed in this paper achieves 97.12% accurate identification of the test sample.

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“…In particular, the work [3] investigates the aperiodic component of the transient of a single-phase earth fault and analyzes its influence on the work of known methods of protection against such earth fault. Much attention is paid to the peculiarities of mathematical modelling of the electric arc in the place of damage and methods of classification of different types of damage [4,5]. In [6], methods of filtering the signals of current and voltage sensors are investigated, and attention is paid to testing them using real signals recorded by the logger at an operating substation.…”

Section: с помощью математической модели компенсированной электрическmentioning

confidence: 99%

Мultifrequency Protecting Method Against Earth-Faults of Phase in the Compensated Electric Networks

Syvokobylenko¹,

Лысенко²

2020

Elektroteh. elektromeh.

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Introduction. A significant proportion of earth faults in 6-35 kV networks is a transient and short-lived process, which is followed by an electric arc. Problem. In such cases, earth-fault protection that responds to steady-state current and voltage is not able to operate properly. Also, the use of the Petersen coil to compensate for the capacitive earth fault current complicates the protection function because it significantly reduces the single phase earth fault current in steady state. Purpose. To develop selective single-phase earth faults protection algorithm using harmonic components that occur in zero-sequence currents and voltage in the transient process. Method. A mathematical model of the power supply system is applied to study the frequency components of currents and voltage of zero sequence in compensated electrical networks with phase-to-earth faults, and a mathematical model is used to test the operation of the developed protection algorithm. The results showed that, the reactive power for harmonic components of the frequency greater than 100 Hz, which are separated from the current and voltage of zero sequence in compensated electrical networks on the damaged feeder, is positive regardless of the degree of compensation of the capacitive current. That may be the basis of the principle of directional protection. Originality. Phase-to-earth fault selective protection algorithm has been developed. In that algorithm, first derivatives of currents and voltages of zero sequence are found, to reduce the influence of aperiodic components. And then, by using of the Fourier transform, a number of harmonic orthogonal components are extracted from them. Reactive power is calculated for each of frequency component and their total sum is found. If that sum excess of threshold, the relay will make a decision. The reliability of the developed protection algorithm is confirmed by the results of mathematical modeling and verification of the test sample at the laboratory stand and by means of field signals that were recorded by digital loggers at the substations. References 10, table 1, figures 6.

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Detection of High Impedance Fault in Distribution Networks

Cited by 37 publications

References 20 publications

Behavioral Dynamics of High Impedance Fault Under Different Line Parameters

Behavioral Dynamics of High Impedance Fault Under Different Line Parameters

Research on arc grounding identification method of distribution network based on waveform subsequence segmentation-clustering

Мultifrequency Protecting Method Against Earth-Faults of Phase in the Compensated Electric Networks

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