Results 11 to 20 of about 395,992 (296)

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

Gong-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, SHI Xiaojun, WANG Hui, CHENG Weijian, MU Yanxiang   +4 more
doaj   +1 more source

Continuous comprehensive line selection technology based on D-S evidence theory

Energy Reports, 2022
Aiming at the single-phase grounding fault in 380 V three-phase AC power system with ungrounded neutral, a fault line selection method considering zero sequence current ratio method, zero sequence current phase ratio method and dual frequency method is ...
Kechang Dai, Zhihao Ye, Liang Chen
doaj   +1 more source

A method of single-phase grounding fault line selection based on optimization spiking neural P systems

Frontiers in Energy Research, 2022
It is important to select the fault line rapidly when single-phase grounding fault occurs in the small current grounding system. The fault information acquisition of existing methods generally need hardware modification, so the high cost makes it ...
Junyang Tian, Liandian Jiang, Haiyong Li, Hongbo Wei, Ying Liu   +4 more
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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
openaire   +1 more source

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, Mingxing Shao, Guobing Song, Zhenxi Xu, Bicong Duan   +4 more
doaj   +1 more source

Research on selective leakage protection of 10 kV system based on transient characteristic parameters in coal mine

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
doaj   +1 more source

A line selection method of mine leakage protectio

Gong-kuang zidonghua, 2020
Aiming at problem of low accuracy of line selection when single-phase grounding fault occurs in mine power supply system at present, according to characteristics of obvious difference of zero-sequence current waveform between fault line and non-fault ...
YU Qun, SHANG Xueli
doaj   +1 more source

Modeling of HVDC System to Improve Estimation of Transient DC Current and Voltages for AC Line-to-Ground FaultAn Actual Case Study in Korea [PDF]

, 2019
A new modeling method for high voltage direct current (HVDC) systems and associated controllers is presented for the power system simulator for engineering (PSS/E) simulation environment.
Kim, Chanki, Kim, Youngjin, Kwon, Dohoon, Moon, Seungil   +3 more
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Data-driven Soft Sensors in the Process Industry [PDF]

, 2009
In the last two decades Soft Sensors established themselves as a valuable alternative to the traditional means for the acquisition of critical process variables, process monitoring and other tasks which are related to process control.
Abdi, Alhoniemi, Angelov, Angelov, Angelov, Arazo-Bravo, Atkeson, Bastin, Bauer, Bishop, Bogdan Gabrys, Bonne, Breiman, Bro, Casali, Chen, Chen, Chen, Chen, Chen, Choi, Chruy, Davies, Dayal, De Wolf, Desai, Devogelaere, Ding, Dong, Dong, Dote, Doyle, Dunia, Dunia, Dunia, Eriksson, Fellner, Fortuna, Fortuna, Frank, Freund, Funahashi, Gabrielsson, Gabrys, Gabrys, Gabrys, Gabrys, Gama, Geladi, Gomez, Gonzalez, Gonzalez, Goodwin, Gosset, Guyon, Han, Hastie, He, Hodge, Hotelling, Jackson, James, Jang, Jiang, Jolliffe, Jordaan, Jos de Assis, Kadlec, Kadlec, Kalos, Kampjarvi, Kittler, Kohavi, Kohonen, Kordon, Kourti, Kourti, Krogh, Kuncheva, Lee, Lee, Lee, Lee, Li, Li, Lin, Lin, Luo, Macias, Mandic, Marjanovic, Meleiro, Menold, Nauck, Neogi, Nomikos, Nomikos, Nomikos, Opitz, Park, Pearson, Pearson, Petr Kadlec, Poggio, Prasad, Principe, Qin, Qin, Qin, Qin, Radhakrishnan, Rnnar, Rong, Rotem, Ruta, Ruta, Schafer, Scheffer, Serneels, Sibylle Strandt, Stanimirova, Su, Tzanakou, van Sprang, van Sprang, Vapnik, Venkatasubramanian, Venkatasubramanian, Venkatasubramanian, Vilalta, Walczak, Walczak, Walczak, Wang, Wang, Wang, Wang, Warne, Weiss, Widmer, Wold, Wold, Wold, Wolpert, Yan, Yang, Zadeh, Zamprogna, Zamprogna, Zhang   +149 more
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Fault Line Selection of Single Phase Grounding Based on Wavelet Packet Full Frequency Analysis and OS-ELM

Journal of Harbin University of Science and Technology, 2021
In order to enhance effectiveness of single-phase ground fault feature extraction and to achieve exactly identification of fault line selection，a new fault line selection method of single phase grounding fault based on wavelet packet and online ...
JI Wen-lu, ZHAO Xiao-long, ZHANG Ming, YANG Hong-lei, WENG Jia-ming   +4 more
doaj   +1 more source