Results 21 to 30 of about 265,532 (259)
Line selection method with transient state based on intrinsic mode energy
Gong-kuang zidonghua, 2013 In view of problem that fault line selection method based on wavelet analysis of coal mine power grid ca't guarantee the optimal decomposition effect due to the decomposition effect depends on choice of primary function, the paper presented a fault line ...
WANG Qing-liang +4 more
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Energies, 2019 The identification of faulty feeder for single-phase high impedance faults (HIFs), especially in resonant grounding distribution system (RGDS), has always been a challenge, and existing faulty feeder identification techniques for HIFs suffer from some ...
Tao Tang +3 more
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МULTIFREQUENCY PROTECTING METHOD AGAINST EARTH-FAULTS OF PHASE IN THE COMPENSATED ELECTRIC NETWORKS
Electrical engineering & Electromechanics, 2020 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
V. F. Syvokobylenko, V. A. Lysenko
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FPGA-based implementation of the back-EMF symmetric-threshold-tracking sensorless commutation method for brushless DC-machines [PDF]
, 2013 The operation of brushless DC permanent-magnet machines requires information of the rotor position to steer the semiconductor switches of the power-supply module which is commonly referred to as Brushless Commutation. Different sensorless techniques have
Darba, Araz +3 more
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Resonance mechanisms of a single line-to-ground fault on ungrounded systems
Archives of Electrical Engineering, 2020 As for a single line-to-ground fault in an ungrounded distribution system, the power-frequency current is too low to detect the fault. The transient current is more palpable than that at a power-frequency of 50 or 60 Hz.
Jun Jinag, Ling Liu
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IET Generation, Transmission & Distribution, 2023 In the case of a single‐phase grounding fault in the distribution network, the transient zero‐sequence current (TZSC) tends to be non‐linear and non‐stationary. The faulty line selection is relatively difficult.
Wei Guo, Yuntao Shi
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On Learning with Finite Memory [PDF]
, 2012 We consider an infinite collection of agents who make decisions, sequentially, about an unknown underlying binary state of the world. Each agent, prior to making a decision, receives an independent private signal whose distribution depends on the state ...
Drakopoulos, Kimon +2 more
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International Journal of Electrical Power & Energy SystemsAfter the single-phase high impedance fault (HIF) occurs in distribution networks, it is difficult to select the faulted feeder and locate the fault section due to the weak fault current and susceptibility to noise interference.
Ao Li +4 more
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Multi-point Synchronous Protection Scheme for Active Distribution Network Based on 5G Communication
Zhongguo dianli, 2023 The linear section location method based on remote signaling data does not consider the influence of communication time-delay and reliability, and is only applicable to large current faults and single faults.
Tiecheng LI +5 more
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Non-stationary Magnetic Microstructures in Stellar Thin Accretion Discs
, 2013 We examine the morphology of magnetic structures in thin plasma accretion discs, generalizing a stationary ideal MHD model to the time-dependent visco-resistive case.
Montani, Giovanni, Petitta, Jacopo
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