Results 21 to 30 of about 7,577,252 (286)

Diagnosis of the single phase‐to‐ground fault in distribution network based on feature extraction and transformation from the waveforms

open access: yesIET Generation, Transmission & Distribution, 2020
The increasing permeation of the distributed generators in the power system brings great challenges for fault diagnosis, especially for the distribution networks with ungrounded neutral or grounded by Peterson coil as the fault current is limited and ...
Fang Shi   +4 more
doaj   +1 more source

Impedance modeling of DC grid considering the frequency-dependent characteristics of cable and overhead line parameters

open access: yes电力工程技术, 2022
The fault characteristics of direct current (DC) grids can be analyzed by addressing the grid damping characteristics. However,the frequency-dependent characteristics of the transmission line parameters are usually ignored in the conventional grid ...
CHEN Siwei   +5 more
doaj   +1 more source

Investigation of superconducting fault current limiter application in a power-dense marine electrical network [PDF]

open access: yes, 2010
Power-dense, low-voltage marine electrical systems have the potential for extremely high fault currents. Limitation of fault currents is very attractive in a marine vessel, particularly in terms of switchgear cost, size, and weight, and reducing damage ...
Blair, S.M.   +11 more
core   +4 more sources

Interturn Short Fault Diagnosis Using Magnitude and Phase of Currents in Permanent Magnet Synchronous Machines

open access: yesSensors, 2022
With the increased demand for permanent magnet synchronous machines (PMSMs) in various industrial fields, interturn short fault (ITSF) diagnosis of PMSMs is under the limelight.
Hyeyun Jeong   +3 more
doaj   +1 more source

Analysis of DC offset in fault current caused by machines in a medium voltage distribution network

open access: yesThe Journal of Engineering, 2019
This study presents a study on the time when the short-circuit fault current in an MV distribution network will cross the zero point in the presence of DC offset affected by the local synchronous and/or induction machines.
Erfan Bashar   +6 more
doaj   +1 more source

Bidirectional solid current-limiter for HVDC grids

open access: yesThe Journal of Engineering, 2019
High-voltage direct current (HVDC) grids have been assumed as a promising technology for its advantages in accommodation and integration of large-scale renewable energy.
Jiantao Li   +4 more
doaj   +1 more source

Research on Fault Current Controller of DC Microgrid

open access: yes南方能源建设, 2023
[Introduction] With the rapid development of AC/DC distribution networks and distributed generation technology, the role of DC microgrids in distribution networks is becoming increasingly important and will become an important component of future ...
Cong LIN, Xiangfeng LI, Fang GUO
doaj   +1 more source

Dynamic Loading Effect on Fault Current and Arc Flash for a Coordinated Substation

open access: yesIEEE Access, 2021
Due to load growth and various load types within the service territory, utilities need to enhance the utilization of substations. In any case, towards the coordinated substation design, the utilization of the transformers’ most total capacity ...
A. B. M. Shafiul Azam   +3 more
doaj   +1 more source

Fault location for MMC–MTDC transmission lines based on least squares-support vector regression

open access: yesThe Journal of Engineering, 2019
The dc transmission line protection plays a crucial role in the secure operation of a multi-terminal modular-multilevel-converter-based high-voltage direct current (MMC–MTDC) system, which is increasingly adopted as a promising option in the power ...
Mingguang Zhang, Heng Wang
doaj   +1 more source

A Protection Method for Inverter-based Microgrid Using Current-only Polarity Comparison

open access: yesJournal of Modern Power Systems and Clean Energy, 2020
The design of an effective protection system for inverter-based microgrids is a complicated engineering challenge. This is due to the fact that inverters have limited fault current capabilities, and that the conventional overcurrent protection is not ...
Bin Wang, Liuming Jing
doaj   +1 more source

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