Research on the Fault Characteristic in Non-effectively Grounding Distribution Network with a Single-Phase-to-Earth Fault Based on Hilbert-Huang Transform

Kang, Zhengming; Li, Dandan; Zhang, Chao; Liu, Xiaolin

doi:10.1109/isdea.2010.181

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Since we are talking about electricity, the voltage is accompanied by the flow of electric current. Voltage and current parameters measured in selected places of the power system are the basis for estimating the condition of the system components [4].…”

Section: Discussionmentioning

confidence: 99%

Protection Automatics of Medium Voltage Networks—Characteristics of Earth Fault Detection Criteria

Wiecha¹,

Wiecha²,

Wiecha³

2021

JEPES

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Designing algorithms for power protection automation is characterized by a large number of ideological concepts and methods of implementation based on analog measurement signals. Originally, digital solutions replicated concepts previously known from electromechanical protection. Depending on the electrical correctness of the analog signal parameters, the operation of the protection devices was affected by errors directly proportional to the errors of the signal sources. Technical progress also resulted in the development of measuring technology. Equipping protection relays with analog-to-digital converters improved the quality of detection, but did not change the operating philosophy of the algorithms. They used standard protection criteria based on the fundamental components of the protection signals, referring to the positive sequence zero sequence of current and voltage. The article presents problems resulting from the use of measuring devices and zero sequence current and voltage filters. The characteristics of conventional and unconventional criteria, based on multi-frequency analyzes of short-circuit signals, and the analysis of the effectiveness of algorithms based on positive sequence zero sequence of current and voltage in comparison to algorithms based on multi-frequency short-circuit signal analyzes were also performed.

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Section: Discussionmentioning

confidence: 99%

Protection Automatics of Medium Voltage Networks—Characteristics of Earth Fault Detection Criteria

Wiecha¹,

Wiecha²,

Wiecha³

2021

JEPES

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“…Besides the wavelet analysis, other approaches are also performed, such as the Hilbert-Huang [10] and the S-transform [11] investigations. Authors of [12] describe research on the frequency spectrum.…”

Section: Introductionmentioning

confidence: 99%

Misoperation analysis of steady-state and transient methods on earth fault locating in compensated distribution networks

Pandakov¹,

Høidalen²,

Marvik

2018

Sustainable Energy, Grids and Networks

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Earth fault detection and location are very important issues in distribution networks. Current methods for faulty feeder selection are based on measurements of steady-state or transient signals. The work presented here identifies and gives analyses of scenarios when ground protection based on these methods is prone to misoperation in resonance grounded systems. It is shown that the traditional watt-metric approach can malfunction depending on network and fault parameters. The admittance methods help to eliminate many issues, however they might have complex settings depending on network configurations. Special attention is paid to approaches based on transient signals as the most promising alternative solution. The current work considers methods utilizing zero sequence current, angle, power, energy and admittance transients. The paper reveals limitations for their application mainly due to presence of electrostatic asymmetry, cables in a network, fault resistance and inception angle. Nevertheless, dependability of these methods is higher than the steady-state especially for intermittent faults. It is also found that analysis of prefault information is important both for the steady-state and the transient methods. The obtained results can be used to enhance reliability of protective schemes and as drivers

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Ground Fault Line Selection with Improved Residual Flow Incremental Method

Li¹,

Guan²,

Xue-guang³

et al. 2013

TELKOMNIKA

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Research on the Fault Characteristic in Non-effectively Grounding Distribution Network with a Single-Phase-to-Earth Fault Based on Hilbert-Huang Transform

Cited by 3 publications

References 3 publications

Protection Automatics of Medium Voltage Networks—Characteristics of Earth Fault Detection Criteria

Protection Automatics of Medium Voltage Networks—Characteristics of Earth Fault Detection Criteria

Misoperation analysis of steady-state and transient methods on earth fault locating in compensated distribution networks

Ground Fault Line Selection with Improved Residual Flow Incremental Method

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