Results 1 to 10 of about 253,400 (298)

Development of an algorithm for identifying single-phase ground fault conditions in cable and overhead lines in the networks with isolated neutral

Energy Reports, 2023
The paper addresses the issue of identification of the type of single-phase ground fault in medium voltage networks operating mainly with an isolated neutral. By analyzing the published research, the most promising methods for detection of a single-phase
Andrey A. Achitaev, Konstantin V. Suslov, Irina O. Volkova, Vyacheslav E. Kozhemyakin, Yuri V. Dvoryansky   +4 more
doaj   +3 more sources

Analysis of the Influence of the Insulation Parameters of Medium Voltage Electrical Networks and of the Petersen Coil on the Single-Phase-to-Ground Fault Current

Energies, 2021
Settings of protection are essential to ensure the sensitivity and selectivity needed to detect defects. Making the correct settings requires the calculation of the fault currents with as little error as possible.
Dumitru Toader, Marian Greconici, Daniela Vesa, Maria Vintan, Claudiu Solea   +4 more
doaj   +3 more sources

Mathematical Modeling of Arc Faults in Networks with Low Single Phase-to-Ground Fault Currents [PDF]

E3S Web of Conferences, 2019
The article comprises the results of the research defining open-flame arcs self-quenching conditions in the event of a single phase-to-ground fault in overhead medium-voltage distribution networks according to existing theories of arc extinguishing.
Brilinskii Andrei, Evdokunin Georgiy, Petrova Anna, Ryndina Irina   +3 more
doaj   +2 more sources

Time Estimation Algorithm of Single-Phase-to-Ground Fault Based on Two-Step Dimensionality Reduction

Energies, 2023
The fault detection time identified by relying on the over-voltage criterion of zero-sequence voltage often lags behind the actual occurrence time of ground faults, which may cause fault protection methods based on transient quantity principles to miss ...
Xin Lin, Haoran Chen, Kai Xu, Jianyuan Xu   +3 more
doaj   +3 more sources

Research on Single-Phase to Ground Fault Simulation Base on a New Type Neutral Point Flexible Grounding Mode

IEEE Access, 2019
There are some problems existing in the traditional grounding mode of the distribution network. To solve them, this paper proposes a flexible grounding method for neutral point.
Han Zeng, Pinghao Yang, Hongbo Cheng, Jianbo Xin, Wenxuan Lin, Wenguang Hu, Mengyi Wan, Yinghan Li, Hua Wu   +8 more
doaj   +3 more sources

Using Matlab/Simulink Software Package to Investigate Fault Behaviors in HVDC System

Mathematics, 2022
Existing studies show that several performance issues will arise in the HVDC link during the three phase-to-ground fault at the side of the inverter and that the DC voltage will oscillate around zero and will not affect the rectifier of the AC system ...
Olumoroti Ikotun, Ephraim Bonah Agyekum, Emad M. Ahmed, Salah Kamel   +3 more
doaj   +1 more source

Fault detection technology for intelligent boundary switch [PDF]

Archives of Electrical Engineering, 2019
An intelligent boundary switch is a three-phase outdoor power distribution device equipped with a controller. It is installed at the boundary point on the medium voltage overhead distribution lines.
Ling Liu
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

The classification model for identifying single-phase earth ground faults in the distribution network jointly driven by physical model and machine learning

Frontiers in Energy Research, 2023
Single-phase earth ground faults are the most frequent faults likely to occur but hard to identify in a distribution system, especially in a neutral ineffectively grounded system.
Su Xueneng, Zhang Hua, Gao Yiwen, Huang Yan, Long Cheng, Li Shilong, Zhang Weiwei, Zheng Qin   +7 more
doaj   +1 more source

Phase Selection and Location Method of Generator Stator Winding Ground Fault Based on BP Neural Network

Energies, 2023
The phase selection and fault location methods of generator stator winding single-phase grounding fault are greatly affected by the transition resistance.
Qinwei Li, Wenchao Jia
doaj   +1 more source