Results 31 to 40 of about 45,196 (330)

Improved transient simulation of salient-pole synchronous generators with internal and ground faults in the stator winding [PDF]

, 2005
An improved model for simulating the transient behavior of salient-pole synchronous generators with internal and ground faults in the stator winding is established using the multi-loop circuit method.
Bi, D.Q., Howe, D., Wang, W.J., Wang, X.H., Zhu, Z.Q.   +4 more
core   +1 more source

An active grounding fault line selection method for DC distribution network based on waveform correlation

电力工程技术, 2023
The fault characteristics of direct current (DC) distribution network with small current grounding mode are inconspicuous when single-pole grounding fault occurs.
WANG Chenqing, CHEN Shi, QI Beibei, KONG Xiangping, LI Peng, GAO Lei   +5 more
doaj   +1 more source

Ground distance relaying algorithm for high resistance fault

IET Generation, Transmission & Distribution, 2010
This study proposes a new fault impedance estimation algorithm of phase-ground fault for ground distance relaying based on the negative-, zero- and comprehensive negative-zero-sequence current component. The principle is based on the assumption that fault path is purely resistive, and the phase angle of fault point voltage and fault path current is ...
Z.Y. Xu, S.J. Jiang, Q.X. Yang, T.S. Bi
openaire   +1 more source

System configuration, fault detection, location, isolation and restoration: a review on LVDC Microgrid protections [PDF]

, 2019
Low voltage direct current (LVDC) distribution has gained the significant interest of research due to the advancements in power conversion technologies. However, the use of converters has given rise to several technical issues regarding their protections
Bououden, Burt, Callavik, Dong Chen, Mitchell, Mohamed Emad Farrag, Oudalov, Waqas Javed, Wu, Xue, Yan Xu, Zhong   +11 more
core   +1 more source

Faulty Line Selection Method Based on Comprehensive Dynamic Time Warping Distance in a Flexible Grounding System

Energies, 2022
A flexible grounding system is a system in which the neutral point of the power supply is grounded via the arc suppression coil in parallel with a low-resistance resistor.
Yu He, Xinhui Zhang, Wenhao Wu, Jun Zhang, Wenyuan Bai, Aiyu Guo, Yu Chen   +6 more
doaj   +1 more source

Feasibility Analysis of Application of HX Series Electric Locomotive Under Ground Fault Mode

机车电传动, 2021
Three grounding fault detection schemes of HX series electric locomotives were introduced, and it was evaluated whether there were potential electrical safety hazards when single point grounding occured in different grounding ranges under different ...
Yanmin ZHANG, Fengrong HAO, Guangxing TIAN, Ying FU, Baosheng SUN, Jianlong CHEN   +5 more
doaj  

Research on influencing factors of arc grounding over-voltage in mine power supply system

Gong-kuang zidonghua, 2017
In order to comprehensively study influence factors such as grounding resistance, line resistance, fault location, grounding capacitance, interphase capacitance and arc ignition time on arc grounding over-voltage in mine power supply system, typical mine
LIU Jucai, GENG Pulong, QU Bingni, SONG Jiancheng, LUO Chao, LI Yongxue, YUAN Leiming   +6 more
doaj   +1 more source

Measurement of resistance temperature characteristics of graphite based flexible grounding body with current heating voltammetry

Xi'an Gongcheng Daxue xuebao, 2022
The resistance temperature characteristics and thermal stability of graphite based flexible grounding materials were studied. With the method of current heating and constant temperature protection, the resistance of grounding body at each temperature was
HU Songjiang, CHEN Sifu, LIU Liqin, LI Fulei, DING Weidong, WANG Yang, CAO Wen   +6 more
doaj   +1 more source

Simplified conservative testing method of touch and step voltages by multiple auxiliary electrodes at reduced distance [PDF]

, 2015
Grounding systems (GSs) must be tested periodically in order to maintain the touch voltage (TV) and step voltage (SV) below a safe value in all of the zones of the installation.
Araneo, Rodolfo, Celozzi, Salvatore, Martirano, Luigi, Parise, Giuseppe, Parise, Luigi   +4 more
core   +1 more source

A Novel High-Frequency Voltage Standing-Wave Ratio-Based Grounding Electrode Line Fault Supervision in Ultra-High Voltage DC Transmission Systems

Energies, 2017
In order to improve the fault monitoring performance of grounding electrode lines in ultra-high voltage DC (UHVDC) transmission systems, a novel fault monitoring approach based on the high-frequency voltage standing-wave ratio (VSWR) is proposed in this ...
Yufei Teng, Xiaopeng Li, Qi Huang, Yifei Wang, Shi Jing, Zhenchao Jiang, Wei Zhen   +6 more
doaj   +1 more source