Development of an algorithm for identifying single-phase ground fault conditions in cable and overhead lines in the networks with isolated neutral

Achitaev, Аndrey А.; Suslov, Konstantin; Volkova, Irina; Kozhemyakin, Vyacheslav E.; Dvoryansky, Yuri V.

doi:10.1016/j.egyr.2023.01.046

Cited by 5 publications

(3 citation statements)

References 23 publications

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“…In addition, as noted earlier, the calculation of the current setpoints of the directional and nondirectional ground fault protections of 6-35 kV networks considers the mode of stable Combining heat and the high sensitivity of the SPGF protection devices, along with the desire of the MRC enterprises operating at 6-35 kV networks to maintain the power supply to their consumers under the conditions of SPGF mode until the damage location is reliably determined, create the conditions for the development of an accident. Despite the immutability of linear voltages values in SPGF mode with electric receivers switched on in medium-voltage networks, the long-existing single-phase short circuit mode increases the probability of intact phases insulation damage due to overvoltage and contributes to the transition to more serious damage-phase-to-phase short circuit, followed by immediate disconnection of the damaged line, shutdown of the technological process and an increase in economic losses [17][18][19].…”

Section: Problem Statementmentioning

confidence: 99%

Investigation of the Effect of Current Protections in Conditions of Single-Phase Ground Fault through Transient Resistance in the Electrical Networks of Mining Enterprises

et al. 2023

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The efficiency of electrical complexes depends directly on the level of power supply system reliability, which comprises extensive and branched distribution networks. A complex of single-phase ground fault (SPGF) relay protection and automation devices (RPA) is used to reduce the economic losses from the failure of the electrical receivers’ distribution networks. This paper presents a study of the protection sensitivity factor, taking into account the influence of the network capacity and the resistance during a fault. The results of this study determined the minimum permissible values of the sensitivity factor that ensures the stable operation of the protection device. This was achieved by taking into account the influence of the transient resistance at the point of short circuit. The practical significance of the study is as follows: the obtained characteristics will allow for the development of new functional logic circuits for SPGF protection. The practical implementation of the obtained results will allow for the following: to increase the sensitivity and selectivity of current non-directional protections in conditions of incomplete short circuits; to ensure the reliable functioning of technological equipment and responsible consumers; to reduce the level of electrical injuries of service personnel; and to reduce economic losses associated with the repair of damaged electrical receivers.

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Section: Problem Statementmentioning

confidence: 99%

Investigation of the Effect of Current Protections in Conditions of Single-Phase Ground Fault through Transient Resistance in the Electrical Networks of Mining Enterprises

et al. 2023

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“…Sadhu and Paul [3] applied the minimum description length principle for optimal mother wavelet selection, streamlining the handling of large datasets. Achitaev et al [4] introduced a novel algorithm to determine types of single-phase ground faults through the analysis IOP Publishing doi:10.1088/1742-6596/2803/1/012037 2 of various parameters. Yang et al [5] suggested a multi-criteria integration method for fault detection in minor current grounding systems using a GRU neural network model.…”

Section: Introductionmentioning

confidence: 99%

Fault line selection algorithm for single-phase high-impedance ground faults in distribution networks based on the hilbert-huang transform

Liu,

Zhang,

Hang

et al. 2024

J. Phys.: Conf. Ser.

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High-impedance faults in distribution networks have stable characteristics, making them difficult to identify. This paper proposes a fault line selection algorithm for single-phase high-impedance ground faults in distribution networks based on the Hilbert-Huang Transform. The Hilbert-Huang Transform analysis method is used to distinguish fault lines. The first intrinsic mode function component obtained from the decomposition of the zero-sequence current within several cycles after the fault is subjected to a Hilbert Transform, yielding the HHT spectrum peak values. These are then combined with the peak values of the zero-sequence current to construct a two-parameter fault line selection criterion. Finally, simulation data of a single-phase ground fault model in a distribution network verify the effectiveness of the proposed fault line selection method.

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“…In [3], the minimum description length technique is utilized for the optimal selection of mother wavelets, simplifying the processing of extensive datasets. In [4], an innovative algorithm is offered for identifying types of single-phase ground faults by analysing various parameters. In [5], a multi-criterion integration approach is proposed for fault line detection in minor current grounding systems, employing a GRU neural network model.…”

Section: Introductionmentioning

confidence: 99%

A multi-feature fusion algorithm for single-phase high-impedance ground fault line selection in distribution networks based on Hilbert-Huang transform

Li,

Wu,

Gao

2024

J. Phys.: Conf. Ser.

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High-impedance faults in distribution networks are characterized by steady-state features, making them difficult to identify. A Hilbert-Huang Transform (HHT) analysis technique is utilized in this paper to identify fault lines. The Intrinsic Mode Function (IMF) components, derived from the decomposition of zero-sequence currents in the aftermath of a fault, are then used to generate characteristic values through a time-frequency energy matrix and similarity measures. In this paper, a single-phase high-impedance ground fault line selection algorithm is proposed for distribution networks. Additionally, the first-order IMF is subjected to a Hilbert transform to obtain HHT spectral peak values, which are then combined with the peak values of zero-sequence currents to form a multi-feature fusion criterion for fault line selection. Verification of the efficacy of the suggested fault line selection technique is accomplished using simulation data from a single-phase ground fault model in a distribution network.

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Development of an algorithm for identifying single-phase ground fault conditions in cable and overhead lines in the networks with isolated neutral

Cited by 5 publications

References 23 publications

Investigation of the Effect of Current Protections in Conditions of Single-Phase Ground Fault through Transient Resistance in the Electrical Networks of Mining Enterprises

Investigation of the Effect of Current Protections in Conditions of Single-Phase Ground Fault through Transient Resistance in the Electrical Networks of Mining Enterprises

Fault line selection algorithm for single-phase high-impedance ground faults in distribution networks based on the hilbert-huang transform

A multi-feature fusion algorithm for single-phase high-impedance ground fault line selection in distribution networks based on Hilbert-Huang transform

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