Results 11 to 20 of about 620 (264)
One-mode component-based fault section location method for mine high-voltage power network
Gong-kuang zidonghua, 2021 After a single-phase grounding fault occurs in the mine high-voltage power network, it is important to identify the fault section quickly for the safe and stable operation of the mine power network.
ZHAO Jianwen, CHEN Jiali
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Faulty Section Location Method Based on Dynamic Time Warping Distance in a Resonant Grounding System
Energies, 2022 When a single-phase grounding fault occurs in a resonant grounding system, the determination of the fault location remains a significant challenge due to the small fault current and the instability of the grounding arc.
Yu He +6 more
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Ground distance relaying algorithm for high resistance fault
IET Generation, Transmission & Distribution, 2010 This study proposes a new fault impedance estimation algorithm of phase-ground fault for ground distance relaying based on the negative-, zero- and comprehensive negative-zero-sequence current component. The principle is based on the assumption that fault path is purely resistive, and the phase angle of fault point voltage and fault path current is ...
Z.Y. Xu, S.J. Jiang, Q.X. Yang, T.S. Bi
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电力工程技术, 2023 The fault characteristics of direct current (DC) distribution network with small current grounding mode are inconspicuous when single-pole grounding fault occurs.
WANG Chenqing +5 more
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Energies, 2022 A flexible grounding system is a system in which the neutral point of the power supply is grounded via the arc suppression coil in parallel with a low-resistance resistor.
Yu He +6 more
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Feasibility Analysis of Application of HX Series Electric Locomotive Under Ground Fault Mode
机车电传动, 2021 Three grounding fault detection schemes of HX series electric locomotives were introduced, and it was evaluated whether there were potential electrical safety hazards when single point grounding occured in different grounding ranges under different ...
Yanmin ZHANG +5 more
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Research on influencing factors of arc grounding over-voltage in mine power supply system
Gong-kuang zidonghua, 2017 In order to comprehensively study influence factors such as grounding resistance, line resistance, fault location, grounding capacitance, interphase capacitance and arc ignition time on arc grounding over-voltage in mine power supply system, typical mine
LIU Jucai +6 more
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Xi'an Gongcheng Daxue xuebao, 2022 The resistance temperature characteristics and thermal stability of graphite based flexible grounding materials were studied. With the method of current heating and constant temperature protection, the resistance of grounding body at each temperature was
HU Songjiang +6 more
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High-resistance Grounding Fault Detector by Use of Feeding Current
Quarterly Report of RTRI, 2008 The detection of high-resistance grounding faults in DC electric railways is difficult due to the impossibility of distinguishing fault current from load current in such systems. We therefore propose a new detection method to distinguish fault current from load current using the total feeding current of two substations. The technique takes advantage of
Shin-ichi HASE +5 more
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Fault line selection method for coal mine power grid based on RCMDE and KFCM
Gong-kuang zidonghua, 2022 It is difficult to accurately select the fault line when the single-phase ground fault occurs in the coal mine power grid with the widely used resonant grounding system.
HAN Guoguo +4 more
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