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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 +4 more
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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 +4 more
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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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Automatic Tuning Arc Suppression Coil Current in a Small Grounding System
Applied Mechanics and Materials, 2014Equipped Petersen coil systems can compensate for the capacitance of the line current, the single-phase ground fault current flows through the capacitor grounding point for the minimum point of the arc of a reliable ground fault arc , to avoid reigniting , prevent arcing ground fault point phase faults caused by short circuit .
Hui Lin Zhang, Yu Bo Zhao, Feng Zhen Liu
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The Summarization of Fault Line Selection of Small Current Grounding System
Applied Mechanics and Materials, 2014With the development of power technology and the improvement of reliability of power supply of power user requirement, small current grounding system become the main grounding mode of distribution network. Small current grounding power system fault line selection is always one of the puzzles in medium voltage distribution network relay protection ...
Zhi Xia Zhang, Zhi Lei Wang, Kun Li
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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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A new method of fault location for small current to ground system
2010 IEEE International Conference on Intelligent Computing and Intelligent Systems, 2010A new principle of fault location is proposed in this paper, which utilized the transient zero-mode power when the fault occurred. The waveforms of transient zero-mode power are similar at the two ipsilateral points of fault point, and the correlation coefficient is close to 1; but the initial polarity of transient zero-mode power is opposite at the ...
Shu Tian, Xiao-wei Wang, Juan-juan Wang
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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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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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Research on fault line selection in small-current neutral grounding power system
Proceedings of 2013 IEEE International Conference on Vehicular Electronics and Safety, 2013A method of fault line selection was proposed based on fault grounded point transfer and wavelet transform in small-current neutral grounding system in this paper. Phase-separation vacuum circuit breaker was installed in the busbar and realize fault grounded point transfer through vacuum breaker of fault phase when single-phase-to-ground fault occurs ...
Hai-Jun Cheng, Hui Meng, Pi-Jie Jiang
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