Results 101 to 110 of about 61,877 (349)

Current situation and development trend of line selection method for single-phase grounding fault in mine power supply system

Meikuang Anquan
The mine power supply system usually adopts the neutral point ungrounded mode or the arc suppression coil grounded mode, due to the particularity and complexity of underground environment, the problem of single-phase grounding fault line selection has ...
Zhanshe YANG, Cheng ZHANG, Xiang RONG
doaj   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

A novel line selection method of single phase grounding fault suitable for coal mine power network

Gong-kuang zidonghua, 2016
For problems that existing fault line selection methods for coal mine power network had low detecting sensitivity and were easily influenced by neutral point operation mode and electric arc at grounding point, characteristics of sequence current and ...
WANG Qingliang, ZHAO Dongqiang, SHAO Lei, LI Zhong   +3 more
doaj   +1 more source

A selective single-phase-to-ground fault protection for neutral un-effectively grounded systems

International Journal of Electrical Power & Energy Systems, 2011
Single-phase-to-ground faults are the most frequent faults likely to occur in power distribution networks. As for a neutral un-effectively grounded system (NUGS), the low fault current is very common in the case of occurrence of a single-phase earth fault, leading to hard identification of the faulty feeder.
Xiangning Lin, Shuohao Ke, Yan Gao, Bing Wang, Pei Liu   +4 more
openaire   +1 more source

Selective complex single-phase earth fault protection for distribution medium-voltage networks [PDF]

, 2015
This article deals with selective protection against single-phase earth faults at 6 – 10 kV electrical networks. Different kinds of earth faults, factors influencing the implementation of protection, various principles of protection implementation ...
Dobryagina, O. A., Shagurina, E. S., Shuin, V. A., Vinokurova, T. Yu.   +3 more
core  

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

Advanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton, Naëmi Leo, Jakub Jurczyk, Claire Donnelly, Dédalo Sanz‐Hernández, Luka Skoric, Nicholas Mille, Stefan Stanescu, Donald A MacLaren, Rachid Belkhou, Aurelio Hierro‐Rodriguez, Amalio Fernández‐Pacheco   +11 more
wiley   +1 more source

A Method Based on CNN–BiLSTM–Attention for Wind Farm Line Fault Distance Prediction

Energies
In view of the complex operating environments of wind farms and the characteristics of multi-branch mixed collector lines, in order to improve the accuracy of single-phase grounding fault location, the convolutional neural network (CNN), bidirectional ...
Ming Zhang, Qingzhong Gao, Baoliang Liu, Chen Zhang, Guangkai Zhou   +4 more
doaj   +1 more source

Simulation research on zero-module characteristics of single-phase grounding fault in mine power supply system

Gong-kuang zidonghua, 2018
For poor actual protection effect of existing line selection methods based on characteristic quantity of single-phase grounding fault, a simulation model of mine power supply system was established in RTDS/RSCAD real-time digital simulation system taking
LUO Chao, GENG Pulong, QU Bingni, SONG Jiancheng, LIU Jucai, DU Zhili, YUAN Leiming   +6 more
doaj   +1 more source

Fault Path Direct-Current Resistance Based Off-Line Single-Phase-To-Ground Fault Location

Zhongguo dianli, 2021
In order to figure out the off-line transmission line fault location, a new fault location method based on fault path direct current resistance measurement is proposed. Firstly, an off-line fault detection and diagnosis method based on three-phase insulation resistance measurement is proposed, including fault type and fault phase diagnosis.
Fuzhi LI, Weibin ZHENG, Wenhai ZHANG, Zhiyong ZHANG, Defeng LIN, Xubo ZHANG, Rongjian ZHANG   +6 more
openaire   +1 more source

A reusable knowledge acquisition shell: KASH [PDF]

KASH (Knowledge Acquisition SHell) is proposed to assist a knowledge engineer by providing a set of utilities for constructing knowledge acquisition sessions based on interviewing techniques.
Keech, Virginia, Westphal, Christopher, Williams, Stephen   +2 more
core   +1 more source