Results 1 to 10 of about 16,192 (119)

Simulation and Experiment Analysis of 10 kV Flexible Grounding Device

Information, 2021
The traditional 10 kV distribution network grounding system has some disadvantages, such as small grounding current and poor arc extinguishing effect, thus, hindering the detection of high-resistance grounding fault.
Mengxuan Liu, Chi Zhang, Kangli Liu
doaj   +1 more source

Analysis of fault current and overvoltage at the neutral point of ±800 kV High-Voltage DC converter transformer

Energy Reports, 2022
In order to enhance the security of ±800 kV High-Voltage DC (HVDC) system, it is needed to consider and analyze the grounding mode of the neutral point of converter transformer.
Jiaqing Fu, Yang Han, Ping Yang, Congling Wang, Amr S. Zalhaf   +4 more
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Study on safety operation of medium voltage distribution network [PDF]

E3S Web of Conferences, 2021
Aiming at the problem of safe operation in the medium voltage distribution network with neutral point grounding through small resistance, the distribution network model was built, and on this basis, MW-level photovoltaic (PV) system, doubly fed Induction
Chen Xiaofang, Chen Li’an, Wang Dong, Chen Qihao   +3 more
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
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Analysis of the impact of large capacity IIDGs on single-phase grounding detection of distribution networks

Zhejiang dianli, 2023
With its connection to distribution networks， the inverter-interfaced distributed generators （IIDGs） affect single-phase grounding detection and jeopardize their safe and stable operation. Based on the characteristics of IIDGs and sequence network theory，
JIANG Miao, SHI Yong, XU Guangfu, HOU Wei   +3 more
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
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
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Application Study of Distributed Grounding Line Selection Method Based on GOOSE Communication

Zhongguo dianli, 2020
A GOOSE communication-based distributed grounding line selection method is introduced and implemented in the relay protection device. When a single-phase grounding fault happens in the small current grounding system, the fault current is quite small due ...
Hongshan CHEN, Jiang YU, Miao JIANG, Yong SHI, Wei HOU   +4 more
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Analysis of Fault Characteristics of Distribution Network with PST Loop Closing Device under Small Current Grounding System

Energies, 2022
With the rapid development of cities and the increasing complexity of distribution network systems, the cableization of transmission lines and the diversification of power users have brought new challenges to the supply reliability of distribution ...
Zhi Xu, Jianxiong Tang, Yupeng Jiang, Risheng Qin, Hongsheng Ma, Yongchun Yang, Chengyong Zhao   +6 more
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A fault line selection method for small current grounding system

Gong-kuang zidonghua, 2013
In view of problem that fault line selection method for small current grounding system is difficult to be suitable for different grounding modes, the paper proposed a fault line selection method for small current grounding system based on RBF neural ...
SHI Dan, SHAO Ru-ping, XU Ju
doaj   +1 more source