Results 31 to 40 of about 9,842,775 (252)

Line selection method with transient state based on intrinsic mode energy

open access: yesGong-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
doaj   +1 more source

Fault Detection Based on the Generalized S-Transform With a Variable Factor for Resonant Grounding Distribution Networks

open access: yesIEEE Access, 2020
Fault detection in resonant grounding (RG) distribution networks remains a challenge due to weak fault signals, extremely complex fault conditions, and unstable intermittent arc grounding faults.
Zhinong Wei   +4 more
doaj   +1 more source

Research on fault line selection method of mine power network

open access: yesGong-kuang zidonghua, 2018
In view of characteristics of DC component of transient zero-sequence current in fault lines is larger than that of normal lines when additional DC source system of mine power network occurrs single-phase earth fault, a fault line selection method of ...
LI Ke   +5 more
doaj   +1 more source

Single-Phase high impedance ground fault location method based on transient directional characteristics

open access: yesInternational Journal of Electrical Power & Energy Systems
After 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
doaj   +1 more source

Identifying Faulty Feeder for Single-Phase High Impedance Fault in Resonant Grounding Distribution System

open access: yesEnergies, 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
doaj   +1 more source

МULTIFREQUENCY PROTECTING METHOD AGAINST EARTH-FAULTS OF PHASE IN THE COMPENSATED ELECTRIC NETWORKS

open access: yesElectrical 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
doaj   +1 more source

A visual faulty feeder detection method for power distribution network based on spatial image generation and deep learning

open access: yesIET 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
doaj   +1 more source

Multi-point Synchronous Protection Scheme for Active Distribution Network Based on 5G Communication

open access: yesZhongguo 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
doaj   +1 more source

Built-in-self-test of analogue circuits using optimised fault sets and transient response testing [PDF]

open access: yes, 2002
Transient Response Testing has been shown to be a very powerful and economical functional test technique for linear analogue cells in mixed-signal systems.
Axelos, N.   +7 more
core   +1 more source

Direct Torque Control for Series-Winding PMSM with Zero-Sequence Current Suppression Capability

open access: yes, 2023
The series-winding permanent-magnet synchronous motor (SW-PMSM) has the merits of high output power and excellent control performance, as does the open-winding permanent-magnet synchronous motor (OW-PMSM).
Xiaogang Lin, Yuefei Zuo, Zhicong Su
core   +1 more source

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