Results 1 to 10 of about 45,255 (210)

Single-Phase Grounding Fault Types Identification Based on Multi-Feature Transformation and Fusion [PDF]

Sensors, 2022
The frequent occurrence of single-phase grounding faults affects the reliable operation of power systems. When a single-phase grounding fault occurs, it is difficult to accurately identify the fault type because of the weak characterization and subtle ...
Min Fan, Jialu Xia, Xinyu Meng, Ke Zhang
doaj   +2 more sources

Phase Selection Method for 10 kV Three-Core Cables Under Single-Phase Grounding Fault Transient Based on Surface Magnetic Field Sensing [PDF]

Sensors
Single-phase grounding is the dominant fault type in urban power distribution networks. Because the total magnetic flux would not change around the cable under a single-phase grounding fault, ferromagnetic zero-sequence current sensors cannot distinguish
Hang Wang, Tianhu Weng, Wenfang Ding, Shuai Yang, Zheng Xiao, Hang Li, Jun Chen   +6 more
doaj   +2 more sources

Simulation Analysis of Single-phase Grounding Fault of Resonant Grounding System

Gong-kuang zidonghua, 2012
For problem of difficult line selection caused by small current of fault line with uncertain direction when single-phase grounding fault happens in resonant grounding system, the paper theoretically analyzed change law of zero-sequence voltage and zero ...
LI Hui, TANG Yi, SUN Chang-qing
doaj   +1 more source

Improvement of single-phase grounding fault detection for small resistance grounding systems based on steady-state monitoring information in the substation

Zhejiang dianli, 2023
In order to use the existing hardware sources to improve the line selection performance of single-phase grounding fault of small resistance grounding systems， a method for line selection of single-phase grounding fault based on the global steady-state ...
LIU Jian, ZHU Qingsong, WANG Yizhao, ZHANG Zhihua, CHEN Jieyu   +4 more
doaj   +1 more source

Distribution Network Voltage Arc Suppression Method Based on Flexible Regulation of Neutral Point Potential of the New Grounding Transformer

Frontiers in Energy Research, 2022
Aiming at the problems that the existing arc suppression cabinet technology cannot adjust the zero sequence voltage flexibly and the control and hardware implementation of active arc suppression equipment based on power electronics are difficult, a new ...
Wu Lifang, Bai Hao, Zhou Ke, Yuan Zhiyong, Yu Xiaoyong, Lei Jinyong, Zou Yu, Zhang Yuan   +7 more
doaj   +1 more source

Research on a New Single-End Fault Location Method for Single-Phase Grounding Faults of Transmission Lines Through Transition Resistance

Frontiers in Energy Research, 2021
A single-end fault location method for single-phase nonmetallic grounding faults of transmission lines in a double terminal system is studied and proposed.
Botong Li, Lin Shi, Weijie Wen, Bin Li, Xiaolong Chen, Jiang Su   +5 more
doaj   +1 more source

Location for single‐phase grounding fault in distribution network based on equivalent admittance distortion rate

IET Generation, Transmission & Distribution, 2021
To solve the problem of difficult location (especially high grounding resistances) for single‐phase grounding faults in distribution networks, a fault location method based on equivalent admittance distortion rate is proposed in this paper.
Yougen Chen, Junbo Yin, Zhiyong Li, Renyong Wei   +3 more
doaj   +1 more source

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

Study on Dynamic Characteristics of Single-Phase Grounding Fault of 1000 MW Hydro Generator under Different Grounding Modes

Machines, 2022
The continuous operation of 1000 MW large hydro generators in China is of great value to the implementation of “double carbon strategy” and power grid safety.
Bin Xiong, Long Zhou, Shuye Ding
doaj   +1 more source

Flexible arc suppression method for single-phase to ground fault in distribution network based on Z-type grounding transformer

Gong-kuang zidonghua, 2022
The coal mine power supply and distribution system usually adopts the neutral point non-effectively grounded method. Most of the power supply lines in this method use cable lines.
SI Weibin, MA Kexiang, LEI Zhirong, DANG Changfu, SONG Guobing, YUN Baoji, LIU Bin   +6 more
doaj   +1 more source