Results 11 to 20 of about 16,653,881 (285)

Fault Location of Generator Stator with Single-Phase High-Resistance Grounding Fault Based on Signal Injection [PDF]

Sensors
This paper proposes a novel method for locating single-phase grounding faults in generator stator windings with high resistance, which are typically challenging to locate due to weak fault characteristics. The method utilizes an active voltage injection technique combined with traveling wave reflection analysis, singular value decomposition (SVD ...
Lei, Binghui, Wang, Yifei, Yang, Zongzhen, Ma, Lijiang, Yang, Xinzhi, Guo, Yanxun, Xu, Shuai, Cheng, Zhiping   +7 more
europepmc   +4 more sources

Refined Diagnosis Method for Disconnected High-Resistance Grounding Faults in Medium-Voltage Distribution Lines

Zhongguo dianli
Multiple voltage drops or abnormal currents may occur in the power system, resulting in significant deformation and fluctuation of fault signal characteristics related to the medium voltage DC distribution network, exceeding the normal fluctuation range,
Peng ZHENG, Pengcheng HAN, Guodong WANG, Ying LOU   +3 more
doaj   +2 more sources

Fault Handling and Localization Strategy Based on Waveform Characteristics Recognition with Coordination of Peterson Coil and Resistance Grounding Method

Energies
To address challenges in locating high-impedance grounding faults (HIGFs) and isolating fault areas in resonant grounding systems, this paper proposes a novel fault identification method based on coordinating a Peterson coil and a resistance grounding ...
Zhengyang Li, Yijia Cao, Chun Chen, Yansha Li, Jinglu Li   +4 more
doaj   +2 more sources

An evidence theory based multiple model fusion method for fault diagnosis of distribution line [PDF]

Scientific Reports
The advancement of distribution line fault diagnosis technology can significantly enhance fault handling efficiency and accuracy, reducing the impact on the power system and ensuring a reliable power supply.
Wanglong Wan, Yuyu Yue, Wei Liu, Minggao Deng, Jixin Zhang, Zheng Qin   +5 more
doaj   +2 more sources

A fault line selection method for flexible grounding systems based on zero-sequence current phase variation

Zhejiang dianli
To address the poor tolerance to transitional resistance and incomplete utilization of fault information in grounding protection for flexible grounding systems， a fault line selection method based on current phase variation is proposed.
LI Zong, WANG Deqiang, FENG Liang, SONG Jianguo, GAO Weiyuan, YUAN Pengsheng   +5 more
doaj   +2 more sources

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   +2 more sources

Application of Low Voltage High Resistance Grounding in Nuclear Power Plants [PDF]

Nuclear Engineering and Technology, 2016
Most nuclear power plants now utilize solid grounded low voltage systems. For safety and reliability reasons, the low voltage (LV) high resistance grounding (HRG) system is also increasingly used in the pulp and paper, petroleum and chemical, and ...
Choong-Koo Chang, Mostafa Ahmed Fouad Hassan   +1 more
doaj   +2 more sources

Analysis of energy dissipation in resistive superconducting fault-current limiters for optimal power system performance [PDF]

, 2011
Fault levels in electrical distribution systems are rising due to the increasing presence of distributed generation, and this rising trend is expected to continue in the future.
Burt, Graeme, Bright, C.G., Blair, Steven Macpherson, Booth, Campbell, Singh, Nand   +4 more
core   +4 more sources

One-mode component-based fault section location method for mine high-voltage power network

Gong-kuang zidonghua, 2021
After a single-phase grounding fault occurs in the mine high-voltage power network, it is important to identify the fault section quickly for the safe and stable operation of the mine power network.
ZHAO Jianwen, CHEN Jiali
doaj   +1 more source

Faulty Section Location Method Based on Dynamic Time Warping Distance in a Resonant Grounding System

Energies, 2022
When a single-phase grounding fault occurs in a resonant grounding system, the determination of the fault location remains a significant challenge due to the small fault current and the instability of the grounding arc.
Yu He, Xinhui Zhang, Rui Wang, Mengzhu Cheng, Zhen Gao, Zheng Zhang, Wenxin Yu   +6 more
doaj   +1 more source