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25 September 2023 A single-phase to ground fault protection method of the new distribution networks
Yingjie Tan, Qingbin Wang, Min Xu, Tong Liu, Yanyu Guo
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Proceedings Volume 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023); 1278865 (2023) https://doi.org/10.1117/12.3004257
Event: Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 2023, Kuala Lumpur, Malaysia
Abstract
In order to solve the contradiction between the increasing electricity demand and the gradual depletion of fossil energy, more and more DGs which use clean, renewable energy are connected to the distribution network, so the traditional distribution network topology has changed and the original traditional protection methods can no longer be accurate operation. The new protection method is needed to be proposed to adapt to the new type of distribution network. Based on analysing the fault characteristics of the new type of distribution network resonant grounding system with distributed power generation, a single-phase grounding fault protection method based on skewness and transient energy characteristics of zero-sequence current is proposed in this paper. At first, it is proposed to use the skewness of the high-frequency components of the zero-sequence current to select the fault line. Then the proposed protection method locates the fault section by calculating the transient energy of each section of the faulty line. Finally, the simulation of new type of distribution network is built on PSCAD, and the results prove the effectiveness of the proposed method.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Yingjie Tan, Qingbin Wang, Min Xu, Tong Liu, and Yanyu Guo "A single-phase to ground fault protection method of the new distribution networks", Proc. SPIE 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 1278865 (25 September 2023); https://doi.org/10.1117/12.3004257
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KEYWORDS
Resistance
Power grids
Inductance
Power supplies
Reliability
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