Results 1 to 10 of about 9,842,775 (252)

A Selective Method for Identifying Single-Phase Ground Faults with Transient Resistance in Isolated Neutral Medium-Voltage Networks

Energies
Single-phase ground faults (SPGFs) in isolated neutral medium-voltage networks are difficult to detect, especially under high transient resistance. This paper proposes a centralized ground fault protection unit (CGFPU) that combines zero-sequence current
Merey Jetpissov, Kazhybek Tergemes, Saken Sheryazov, Algazy Zhauyt, Toleuserik Sadykbek, Abdissattar Berdibekov, Gulbarshyn Smailova   +6 more
doaj   +1 more source

Research on single-phase grounding detection method in small-current grounding systems based on image recognition

Frontiers in Energy Research
In small-current grounding systems, the fault current during a single-phase grounding fault is small, and the transient process is complex, leading to challenges in line selection accuracy and reliability.
Guangfen Wan, Xuekun Xu
doaj   +1 more source

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  

Diagnosis Method of Single-phase Grounding Fault of Distribution Network Based on Fuzzy Reasoning

Gong-kuang zidonghua, 2012
The paper proposed a diagnosis method of single-phase grounding fault of distribution network based on fuzzy reasoning, namely adopting fuzzy theory to improve three traditional diagnosis methods of single-phase grounding fault including amplitude ...
LUO Yu-feng, ZHAO Yu-dan, CHEN Xi-hui
doaj  

ResNest-SVM-based method for identifying single-phase ground faults in active distribution networks

Frontiers in Energy Research
Single-phase grounding fault is the most common fault type in the distribution network. An accurate and effective single-phase grounding fault identification method is a prerequisite for maintaining the safe and stable operation of the power grid.
Qingwen Lian, Xiang Luo, Dong Lin, Caihua Lin, Bingxi Chen, Ziyi Guo   +5 more
doaj   +1 more source

Passive flexible arc suppression strategy for single phase grounding fault in distribution network

Diance yu yibiao
It is a potential inducement of forest fire to ignite leaves when the high-resistance grounding fault of overhead lines of distribution networks riding through trees and bamboo occurs, so the reliable arc suppression of single-phase grounding fault of ...
ZHAO Fuping, FAN Songhai, SHANG Hao, WANG Kangkang, ZENG Dehua, NING Wenjun, ZHAO Lihua   +6 more
doaj   +1 more source

EMT-Based Sequence Analysis of a Converter-Dominated Microgrid Under Fault and Load Disturbances: Case Study of the NELHA Microgrid

IEEE Access
Converter-dominated microgrids exhibit dynamic behaviors during faults and disturbances that differ fundamentally from those of synchronous-machine–dominated systems.
Adewale Adegboyega, Saeed Sepasi, Zakaria Afshar   +2 more
doaj   +1 more source

Numerical Mathematical Model for the Analysis of the Transient Regime Caused by a Phase-to-Earth Fault

Applied Sciences
The increasing complexity of electrical power installations requires more and more sophisticated mathematical models for the analysis of their operating regimes in relation to transient regimes.
Dumitru Toader, Claudiu Solea, Marian Greconici, Maria Vintan, Ildiko Tatai, Daniela Vesa   +5 more
doaj   +1 more source

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   +1 more source

Faulty line detection for cross‐line same‐phase successive ground faults in distribution network based on transient characteristics

IET Generation, Transmission & Distribution
Currently, theoretical analysis of single‐phase grounding (SPG) faults in low‐current grounding systems has reached a high level of refinement, and the corresponding detection methods have matured.
Yizhao Wang, Chuan Feng, Jian Liu, Xuan Dong, Jiawei Yuan, Zaibin Jiao   +5 more
doaj   +1 more source