Results 1 to 10 of about 49,038 (159)

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

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

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

A Single-Phase Ground Fault Line Selection Method in Active Distribution Networks Based on Transformer Grounding Mode Modification

Energies
Reliable fault line selection technology is crucial for preventing fault range expansion and ensuring the reliable operation of distribution networks.
Shi Su, Qingyang Xie, Pengfei Ma, Yuan Li, Fahui Chen, Jing Zhang, Botong Li, Changqi Wang   +7 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

A New Approach for Single-Phase-to-Ground Fault Detection in Mid-Voltage Systems Using Low-Voltage Sensors

Symmetry
Single-phase-to-ground fault in low-current grounding systems represents a serious public safety concern. Low-voltage (LV) sensors, with their growing maturity, can now monitor multiple points of the mid-voltage (MV) distribution network.
Xin Ai, Ai Xin, Mingze ZHANG
exaly   +2 more sources

Monitoring in 6–35 kV power networks, location of single-phase ground fault and detection of fault feeder

International Journal of Electrical Power and Energy Systems, 2023
V. Kachesov, A. Lebedev, E. Kitova
exaly   +2 more sources

Fault Diagnosis of Power Cable Based on 1DCNN-BiLSTM [PDF]

Zhengzhou Daxue xuebao. Gongxue ban, 2023
In order to improve the accuracy of fault diagnosis of power cable failure to ensure a cable fault detection method based on convolution neural network (CNN) and bi-directional long short term memory (BiLSTM) was proposed in this paper.
GAO Chao , LIU Zehui, CAO Dong, YAO Lina   +3 more
doaj   +1 more source

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