Results 1 to 10 of about 10,043 (293)

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   +4 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   +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   +4 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   +4 more sources

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   +2 more sources

Fault Path Direct-Current Resistance Based Off-Line Single-Phase-To-Ground Fault Location

Zhongguo dianli, 2021
In order to figure out the off-line transmission line fault location, a new fault location method based on fault path direct current resistance measurement is proposed.
Fuzhi LI, Weibin ZHENG, Wenhai ZHANG, Zhiyong ZHANG, Defeng LIN, Xubo ZHANG, Rongjian ZHANG   +6 more
doaj   +2 more sources

Characteristic Quantity Analysis of Single-Phase Contact Tree Ground Fault of Distribution Network Overhead Lines

Energies, 2023
When the overhead line passes through the forest area, the conductor may contact the line to induce the tree-contact single-phase-to-ground fault (TSF), and the persistence of TSF may induce wildfires, bringing serious consequences.
Jianbo He, Yao Zhou, Yilin Li, Guangqing Zhang, Jiayu Liang, Hao Shang, Wenjun Ning   +6 more
doaj   +2 more sources

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   +2 more sources

A line selection method for single phase ground fault in coal mine power supply system based on wavelet packet

Gong-kuang zidonghua, 2018
In view of problems of low accuracy and poor reliability of line selection methods for single phase ground fault in existing coal mine power supply system, a line selection method for single phase ground fault in coal mine power supply system based on ...
LUO Chao, GENG Pulong, QU Bingni, SONG Jiancheng, LIU Jucai, DU Zhili, YUAN Leiming   +6 more
doaj   +2 more sources

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   +2 more sources