Results 21 to 30 of about 22,137 (279)

Ground Fault Detection Based on Fault Data Stitching and Image Generation of Resonant Grounding Distribution Systems

open access: yesEnergies, 2023
Fast and accurate fault detection is important for the long term, stable operation of the distribution network. For the resonant grounding system, the fault signal features extraction difficulties, and the existing detection method’s accuracy is not high.
Xianglun Nie   +6 more
doaj   +1 more source

Combined line selection of single-phase grounding faults considering harmonic injection of distributed powers

open access: yes电力工程技术, 2023
With the improvement of the requirements for the safe operation of distribution network lines, the harmonics injected by distributed power generation make the existing line selection methods ineffective, and the fault line selection method with a single ...
LI Yan   +4 more
doaj   +1 more source

Transient Characteristics and Line Selection of Two-Point Grounding Faults on Same Phase in Resonant Grounding System

open access: yesZhongguo dianli, 2022
Aiming at the low accuracy problem in line selection of two-point grounding faults on same phase in distribution network, a new fault feeder identification method suitable for two-point grounding faults on same phase in resonant grounding systems is ...
Yingtong LIU   +3 more
doaj   +1 more source

Harmonic Resonance Stability of Aeronautical Ground Lighting Systems [PDF]

open access: yesIEEE Journal of Emerging and Selected Topics in Power Electronics, 2018
Aeronautical ground lighting (AGL) systems assist aircraft pilots in airport operations. These systems are singlephase series circuits where constant current regulators (CCRs) feed luminaires with an adjustable rms current. CCRs are voltage source converters (VSCs) which may cause harmonic resonance instabilities when their control interacts with ...
Vidal, Daniel   +2 more
openaire   +4 more sources

Fault location of single-phase grounding fault based on Manhattan average distance and cosine similarity in distribution network

open access: yes电力工程技术, 2023
Aiming at the problem of insufficient sensitivity of existing fault location methods when single-phase grounding fault occurs in resonant grounding system of active distribution network, a fault location algorithm based on Manhattan average distance and ...
TAO Weiqing   +5 more
doaj   +1 more source

Harmonic Current Distribution in Grounding Systems of Cabled Medium Voltage Grids during Single-Pole Ground Fault

open access: yesEnergies, 2021
The design of every power supply system must guarantee the safety for human life even in the event of a fault. Due to the system change in the electrical power supply, the fault current contains more and more unknown shares of current harmonics ...
Benjamin Küchler   +2 more
doaj   +1 more source

Identification of Single-Phase Line Break Fault Direction Based on Local Voltage Information in Small Current Grounding System Considering the Impact of DG

open access: yesIEEE Access, 2023
Line break faults commonly occur in distribution networks and pose the risk of electric shocks to nearby individuals and animals. This study aims to address the challenge of identifying the direction of a line break fault.
Fan Yang   +5 more
doaj   +1 more source

Ground fault protection methods for distribution systems [PDF]

open access: yes, 2016
The system grounding method option has a direct influence on the overall performance of the entire medium voltage network as well as on the ground fault current magnitude.
Nogueira, Teresa   +1 more
core   +2 more sources

Fault line selection method for coal mine power grid based on RCMDE and KFCM

open access: yesGong-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
doaj   +1 more source

New line selection method of resonant grounding system based on energy and correlatio

open access: yesGong-kuang zidonghua, 2016
In view of problem that single line selection method of resonant grounding system prones to misjudgment and is easily affected by the training samples, new line selection method of resonant grounding system based on energy and correlation was proposed ...
YANG Xinwei, LIU Weina, JIANG Bo
doaj   +1 more source

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