Results 291 to 300 of about 288,989 (348)

Single-phase grounding test sequence fault location method for small current grounding system

2020 4th International Conference on HVDC (HVDC), 2020
A method for Single-phase grounding test sequence fault location method for small current grounding system is proposed, which aims to compensate for the incomplete or faulty signal of the line ground fault signal when the fault area in the line is located in the prior art.
Zhao Haifeng, Peng Bingying, Xu Xi, Guo Yaosong, Zhang Ji, Qiu Xinyu   +5 more
openaire   +1 more source

Single phase grounding fault location based on frequency domain characteristics of fault current

2011 International Conference on Advanced Power System Automation and Protection, 2011
This paper studies the fault current frequency spectrum characteristics of single phase ground fault in ungrounded distribution networks, and the fault location method based on it. Firstly, it analyzes the production mechanism of 2nd major frequency component, and the relationship between the 2nd major frequency component and series resonance frequency
Bo Jiang, Shenxing Shi, Xinzhou Dong, Bin Wang   +3 more
openaire   +1 more source

Multilabel Classification Model for Type Recognition of Single-Phase-to-Ground Fault Based on KNN-Bayesian Method

IEEE transactions on industry applications, 2021
In nonsolidly earthed distribution networks, single-phase-to-ground faults (SPGFs) significantly threaten the safety of people and equipment. Although selection and location techniques for the existing fault lines have made remarkable contributions in ...
Yongliang Liang, Kejun Li, Zhao Ma, Weijen Lee   +3 more
semanticscholar   +1 more source

Phase Current based Fault Section Location for Single-Phase Grounding Fault in Non-Effectively Grounded Distribution Network

2022
Zero-sequence voltage and current based single-phase grounding (SPG) fault detection and location methods in non-effectively grounded distribution network have limitations in practical use due to lack of zero-sequence CT and PT in some cases. To deal with this problem, the phase current characteristics under SPG fault are analysed and the SPG fault ...
zhongxue chang, Nana Chang, Wei Zhang, Chenhao Zhang, Guobing Song, Jian Liu, Zhihua Zhang, Weibin Tan   +7 more
openaire   +1 more source

Fault line Selection of Single Phase Grounding Fault in Small-Current Ground System Based on Reactive Current

2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia), 2019
It is difficult to select fault line accurate when single phase grounding faults occur in small-current ground system. The manuscript proposed a novel fault line selection scheme base on reactive current. According to theoretical analysis, the variation of current after the occurrence of single phase short circuit is mainly composed of capacitive ...
Li Shilong, Teng Yufei, Li Xiaopeng, Zhang Huajie, Feng Shilin   +4 more
openaire   +1 more source

Transient based Single Phase to Ground Fault Distance Computation

2009
The subject of this work is location of single phase to ground fault in medium voltage distribution network. The considered distribution network can be grounded or isolated and normally is in radial operation. The fault location is based on the fault generated low frequency transient signals of current and voltage of faulty phase measured in the supply
Gruhonjić Ferhatbegović, Šeila, Marušić, Ante   +1 more
openaire   +2 more sources

Delayed Current Zero Crossing Characteristics for Circuit Breaker Interrupting Short-Circuit Current Following Permanent Single-phase Ground Fault on Short 1000kV AC Lines

2019 IEEE Asia Power and Energy Engineering Conference (APEEC), 2019
For double or multiple circuits of 1000kV lines on the same tower, where a permanent single-phase ground fault occurs on one circuit, delayed current zero crossing may take place during single-phase reclosing of circuit breaker.
Ying Lou, Z. Zha, Zhenqiang Li, Lei Wan
semanticscholar   +1 more source

A New Arc Suppression Method for Single-phase Ground Fault of Distribution Network

IEEE PES Asia-Pacific Power and Energy Engineering Conference, 2019
To address the arc suppression problems of single-phase ground fault in distribution network, this paper expounds the active arc suppression mechanism based on the compensation current injection of three-phase active arc suppression device and proposes a
Pei Luo, Yan Wen, Yawen Xie
semanticscholar   +1 more source

Control of Smart Transformer Under Single-Phase to Ground Fault Condition

IEEE Transactions on Power Electronics, 2020
In low voltage (LV) electric distribution grid, the continuity of power supply service is degraded by various grid faults. Even under single phase to ground faults, the continuous operation capability of healthy phases is also limited. The smart transformer (ST) can establish each phase voltage independently and thus can switch the operation mode from ...
Rongwu Zhu, Marco Liserre
openaire   +1 more source

Single-Ended Traveling Wave Location for Single-Phase Ground Faults in Distribution Networks Based on Hough Transform

IEEE Transactions on Instrumentation and Measurement
Current single-ended fault location methods for single-phase ground faults in distribution networks are facing challenges such as difficulty in identifying reflected wavefronts, inaccurate judgment of wavefront reflection positions, and limited noise ...
Fang-Xu Chen, Moufa Guo, Jiahao Lin, Yu-Lin Zheng, Xian-Kai Zeng, Qiteng Hong   +5 more
semanticscholar   +1 more source