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Evaluation of lightning overvoltage at neutral point of HVDC converter transformer based on EMTP
Energy Reports, 2022 In order to ensure the safe and stable operation of high voltage direct current (HVDC) systems, this paper studies the lightning overvoltage at the neutral point of the HVDC converter transformer.
Zhe Hu +4 more
doaj +1 more source
High-Frequency Behavior of Residual Current Devices [PDF]
, 2012 The purpose of this paper is to analyze the behavior of residual current devices at frequencies higher than the rated one. Many experiments are carried out by measuring tripping current and time of devices of different typology, produced by different ...
Freschi, Fabio
core +1 more source
Single-Phase Fault Line Selection in Distribution Network Based on Signal Injection Method
IEEE Access, 2021 The distribution network with small current grounding mode can ensure high power supply reliability, but it is difficult to locate single-phase grounding fault line. Most of the faults in distribution network are single-phase to ground fault.
Lin Niu, Guiqing Wu, Zhangsheng Xu
doaj +1 more source
Superconducting fault current limiter application in a power-dense marine electrical system [PDF]
, 2011 Power-dense, low-voltage marine electrical systems have the potential for extremely high fault currents. Superconducting fault current limiters (SFCLs) have been of interest for many years and offer an effective method for reducing fault currents.
Burt, Graeme +5 more
core +4 more sources
Zhongguo dianli, 2021 AC filter is an important equipment in DC transmission system. This paper mainly analyzes the influence of simulation model on the electrical characteristics (overvoltage, current and absorbed energy) of the arresters for AC filter, and carries out the ...
Xuemin HUANG +4 more
doaj +1 more source
International Journal of Electrochemical Science, 2021 Aimed at the corrosion caused by the ground current of the high-voltage direct current (HVDC) transmission system to adjacent buried pipelines, horizontal delamination is carried out according to different soil conductivities, and a field-circuit ...
Shan Lin +3 more
doaj +1 more source
IEEE 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
Fusion fault line selection method of small current grounding fault based on VMD
Gong-kuang zidonghua, 2023 At present, the fault line selection method of coal mine distribution network has the problem of fault line selection failure when the relevant fault features are not obvious.
SUN Kongming +5 more
doaj +1 more source
Feasibility Analysis of Tripping in Small Current Grounding System
, 2011 With the development of integrated automation systems and distribution automation technology, considering the safety of grid equipment, the voltage security of low-voltage power grid, personal safety and the characteristics of small current grounding ...
Yi Shi Shu, Pei Jie Yu, Li Li Ma
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Gong-kuang zidonghua, 2015 For the problem that failure current was small of grounding point of neutral point grounding system grounded by arc suppression coil when single-phase ground fault occurs, the paper proposed a kind of current leakage protection method of coal mine based ...
CHEN Zhaoye +4 more
doaj +1 more source