Results 11 to 20 of about 6,686,710 (281)
Research of Method of On-line Fault Line Selection and Location of Underground Cable
Gong-kuang zidonghua, 2011 In order to solve problems that it is hard to confirm fault position when single-phase grounding fault happens in underground power supply system and existing off-line distance measured methods are poor in precision, the paper analyzed characteristics of
SUN Quan-cai, JIN Li
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Research on fault line selection method of mine power network
Gong-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 ...
ZHANG Feifei +5 more
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Gong-kuang zidonghua, 2012 For the deficiency of single line selection principle, the paper proposed integrative line selection strategy, namely zero sequence admittance method, zero sequence susceptance increment method and zero sequence conductance method based on steady-state ...
LI Hui, TANG Yi, SUN Chang-qing
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Rough set based gas turbine fault isolation study [PDF]
, 2010 Gas path fault isolation is one of the key techniques in Engine Health Management systems. In order to accomplish gas path fault isolation successfully for a gas turbine engine, both an accurate off-design performance model and an effective fault ...
Wang, Lihui.
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Grounding Fault Line Selection by EMD and LSSVM [PDF]
Advances in Economics, Business and Management Research, 2015 According to the characteristics of transient zero sequence components as well as the existing information fusion technology has the disadvantage of high sample dimension and computer overhead in fault line selection in small current grounding fault . First of all, by using the empirical mode decomposition (EMD) and the Fast Fu Liye transform (FFT) on ...
Xiaofang Cao, Tianyi Qu
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Performance evaluation of machine learning for fault selection in power transmission lines [PDF]
Knowledge and Information Systems, 2022 AbstractLearning methods have been increasingly used in power engineering to perform various tasks. In this paper, a fault selection procedure in double-circuit transmission lines employing different learning methods is accordingly proposed. In the proposed procedure, the discrete Fourier transform (DFT) is used to pre-process raw data from the ...
Daniel Gutierrez-Rojas +5 more
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Application of Convolutional Neural Network in Fault Line Selection of Distribution Network
Journal of Applied Science and Engineering, 2021 Aiming at the problem that the effect of the existing fault line selection methods is mainly determined by the fault features constructed by manual extraction, and the fault feature extraction process is complex and time-consuming, a new method based on ...
Jingjing Tian +4 more
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Fault severity diagnosis of rolling element bearings based on kurtogram and envelope analysis [PDF]
, 2014 Faults in rolling element bearing are among the main causes of breakdown in rotating machines. Vibration is an effective technique for machine condition monitoring.
Gu, Fengshou +6 more
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Single‐pole fault line selection method for MVDC distribution grid based on 0‐mode power
IET Generation, Transmission & Distribution, 2021 At present, the MVDC distribution grid is developing rapidly and relay protection is the key technology to ensure stable operation. Therefore, this paper focuses on the fault line selection method.
Shuping Gao +4 more
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Meikuang Anquan, 2022 When a single-phase grounding fault occurs in the coal mine 10 kV power supply system, due to the low sampling frequency of the system, the traditional transient line selection method is easy to lose the “line selection information”, and is greatly ...
GUO Runshou, CAO Jiyuan
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