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Transient processes at single phase-to-ground faults in combined grounded networks
2012 Electric Power Quality and Supply Reliability, 2012This paper deals with the combined method of neutral grounding when a high-value resistor is continuously connected to a neutral in parallel with a Petersen coil. Monitoring of processes at single phase-to-ground faults was organized in the 6 kV network of the large-scale iron and steel plant.
Andrey Shirkovets +3 more
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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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Transient Component-Based Distribution Network Single-Phase Ground Fault Location
Applied Mechanics and Materials, 2013The paper study the single-phase ground Fault Location. Which analysis neutral non-effectively grounded distribution network transient characteristics of single-phase. and verify the HHT method accuracy that through the actual system simulation of single-phase ground fault experiments .It proposed the fault localization criterion which is based on ...
Zeng Ping Wang, Jia Liu, Wei Hua Luo
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Single-phase grounding test sequence fault location method for small current grounding system
2020 4th International Conference on HVDC (HVDC), 2020A 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 +5 more
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Single phase grounding fault location based on frequency domain characteristics of fault current
2011 International Conference on Advanced Power System Automation and Protection, 2011This 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 +3 more
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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 +7 more
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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 +7 more
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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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Transient based Single Phase to Ground Fault Distance Computation
2009The 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 +1 more
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Control of Smart Transformer Under Single-Phase to Ground Fault Condition
IEEE Transactions on Power Electronics, 2020In 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
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Characteristic analysis of single-phase grounding fault in resonant grounded systems based-on HHT
2016 IEEE 11th Conference on Industrial Electronics and Applications (ICIEA), 2016Transient analysis is carried out for the single-phase grounding fault in small current grounding system, the transient grounding current expression is derived, and the influence factors are analyzed. Introduces a method for non-stationary and non-linear signal analysis method-Hilbert Huang transform (HHT) to analyze the single phase grounding fault in
Yingwei Xiao +3 more
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