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Summary of Fault Line Selection for Single-phase Grounding in Small Current Systems
2020At present, fault line selection theory of small current grounding system mainly focuses on solving the reliability problem of urban power supply system. There is little research on the line selection theory of mine distribution network, but single phase ground fault in mine distribution network will cause more harm.
Xianhui Zhu +4 more
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Adjusting the Degree of Compensation of Small Current Grounding System Petersen Coil
Applied Mechanics and Materials, 2014While the system is equipped with Petersen coil caused by the switching operation can prevent a different period , single-phase disconnection and other factors neutral point displacement , so that the neutral point voltage is too high, the threat of insulation safety equipment .
Xiang Dong Zhao, Feng Zhen Liu, Ye Tian
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2020 5th International Conference on Power and Renewable Energy (ICPRE), 2020
The fault characteristics of the small current grounding system are not obvious when the fault occurs. Currently, it is hard to accurately select and locate the ground fault in the small current grounding system. Therefore, in this paper, a scheme of fault grounding line selection and location is proposed based on the characteristic of the zero ...
Kaiji Liao +4 more
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The fault characteristics of the small current grounding system are not obvious when the fault occurs. Currently, it is hard to accurately select and locate the ground fault in the small current grounding system. Therefore, in this paper, a scheme of fault grounding line selection and location is proposed based on the characteristic of the zero ...
Kaiji Liao +4 more
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Automatic fault line selection technology for small current grounding system
2017 2nd International Conference on Power and Renewable Energy (ICPRE), 2017The low voltage distribution network in our country widely adopts non-direct grounding system, called as small current grounding system. Single-phase ground fault is the most common occurrence for this system. Now, some power supply departments in our country still recognize fault lines by traditional artificial method, meaning low efficiency and ...
Ge Beichang +5 more
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2012 International Conference on Wavelet Active Media Technology and Information Processing (ICWAMTIP), 2012
Firstly, we use MATLAB to simulate the small current grounding grid single-phase grounding fault. Secondly,we apply the GHM multiwavelet transform to analyze the transient electric signal caused by single-phase earth fault.
null Yu-Ling Luo, null Hui Luo
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Firstly, we use MATLAB to simulate the small current grounding grid single-phase grounding fault. Secondly,we apply the GHM multiwavelet transform to analyze the transient electric signal caused by single-phase earth fault.
null Yu-Ling Luo, null Hui Luo
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Fault Location Method for Small Current Grounding System Based on Transient Information
2020 IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia), 2020The transient quantity contains a wealth of fault information after a single-phase ground fault occurs in a small current grounding system. This paper analyzes the transient process after the fault and get the conclusions that the magnitude of the main resonant frequency and its corresponding component is related to the fault distance.
Wei Bao +3 more
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Applied Mechanics and Materials, 2013
In case of the arc suppression coil for neutral point grounding of small current grounding system, when single-phase grounding fault occurs, due to the arc suppression coil for fault line of the compensation effect of the zero sequence current, the fault features is not obvious, it can't implement the fault line selection and fault point location. This
Jun Zhou, Ke Zheng Cao
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In case of the arc suppression coil for neutral point grounding of small current grounding system, when single-phase grounding fault occurs, due to the arc suppression coil for fault line of the compensation effect of the zero sequence current, the fault features is not obvious, it can't implement the fault line selection and fault point location. This
Jun Zhou, Ke Zheng Cao
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Fault Location for Small Current Grounding System Based on Injection Method
2021This paper introduces the single-phase grounding fault line selection and location protection of small current grounding system based on “S injection method”. When the power failure occurs, the insulation recovery and location of the protection are difficult. A new localization method is proposed.
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A New Evaluation System Method for Small Current Grounding Line Selection Device
Advanced Materials Research, 2014Abstract: The evaluation of small current grounding line selection device plays an important guiding part in fault diagnosis and device promotion. But the current methods focus on the evaluation of individual indicator and can not form systematic evaluation of the programs.This paper firstly makes use of AHP method to evaluate small current grounding ...
Jin Long Zhou, Jin Ling Lu, Chao Xu
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Graphical-Based Modeling Simulation System of Small Current Grounding Fault Location
2011 International Conference on Computational and Information Sciences, 2011In order to narrow the scope of line maintenance inspection, locate the fault line of grid quickly, we put forward the concept of optimal distribution of line into segments, with the figure and the tree structure methods to represent and process the distribution information of line. By analyzing the ungrounded single-phase power grid failure mechanism,
Guping Zheng, Xueying Liu, Xin Lu
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