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Estimating locations of single-phase-to-ground faults of ungrounded distribution systems
IEEE PES ISGT Europe 2013, 2013This paper proposes a new method for determining single-phase-to-ground fault locations of ungrounded distribution systems based on the measurements collected from the feeder breakers and intelligent switches during the fault. The method first narrows down the possible faulted area into a specific feeder section based on the reactive power factors of ...
Hongbo Sun 0003 +4 more
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Single-phase grounding fault identification and fault line selection for compensation grid
Proceedings of The 7th International Power Electronics and Motion Control Conference, 2012A new grounding fault line selection method based on small-world network theory is proposed in order to solve the problems existing in grounding fault line selection device of compensation grid, such as that the correct rate of grounding fault line selection is not high and the selection device cannot recognize high-impedance and low-impedance ...
null Chen Zhongren +2 more
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Ground-fault loop impedance calculations in single-phase systems
49th IEEE/IAS Industrial & Commercial Power Systems Technical Conference, 2013Protection against electric shock in low-voltage installations by automatic disconnection of the supply must be provided in compliance with applicable national or international standards. Such regulations (e.g. National Electrical Code in the U.S., IEC 60364, BS 7671 in the U.K., etc.) take into account the earthing system of the installation, such as ...
Haijun Liu, Massimo Mitolo, Jun Qiu
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Study on Fault Location of Single-Phase-to-Ground for Distribution Network
Advanced Materials Research, 2012The AC-DC method (the AC method combined with the DC method) has integrated the superiority of the AC method’s easy measurement and the DC method’s reliability, so it has achieved some degree of use. The method before only took the ground resistor as the condition of combination, so it is not perfect.
Li Zhang, Xiu Yuan Yang, Jun Ling Ren
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Detection of places of single-phase ground fault by frequency of the resonance
2016 57th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON), 2016Long-term single-phase ground fault in overhead 6–35 kV power lines with isolated neutral, accompanied by intermittent arc, lead to overvoltage and damage of electrical equipment. In turn, precise localisation of the damaged sections of the overhead power lines is a challenging task, as external inspection of power lines takes a lot of time, effort and
Aleksander Fedotov +3 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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A New Fault Location Algorithm for Single Phase to Ground Faults in Power Distribution Network
2010 International Conference on Measuring Technology and Mechatronics Automation, 2010A new fault location algorithm for distribution network is proposed based on the wide-area synchronizing information. The algorithm is based on the distributed parameters model in the small current neutral grounding system, and constructed a fault location function according to the relationships between the fault current and fault distance, which fully
Shu Tian, Xiaowei Wang, Juanjuan Wang
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Recognition of the Single-Phase Ground Fault in Power Distribution System
Key Engineering Materials, 2011For power distribution systems, recognizing the single-phase ground fault is very difficult because there are several faults with similar features. This paper presents a novel method that can help to overcome this difficulty. The idea is to turns the original fault info into a whole system with transient state, steady state and transition state ...
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Modeling and simulation analysis of single phase arc grounding fault based on MATLAB
Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011The single phase arc grounding fault is a main fault form in medium voltage distribution networks. It is essential to build an accurate grounding arc model for fault analysis. In this paper, a new grounding arc model is built based on the MATLAB with the arc gap energy-balance theory.
Ran Yu 0003 +6 more
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A survey on faulty line selection technology for single-phase-to-ground fault in China
2013 IEEE Industry Applications Society Annual Meeting, 2013Single-phase-to-ground fault is difficult to detect with traditional methods in NIEPS because of minor fault current, fault arc, harmonics influence and the protection principle limitation. In order to improve the precision and reliability of traditional faulty line selection technologies for NIEPS, more attention has been paid by many researchers over
Yuanyuan Wang +3 more
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