Optimization of time-sharing over-current protection setting value for distribution network with decentralized access of distributed power supply

Jin Zong; Weichen Liang; Yiwei Zhao; Mengyu Wu; Bo Liu; Guomin Luo

doi:10.1117/12.3024480

13 May 2024 Optimization of time-sharing over-current protection setting value for distribution network with decentralized access of distributed power supply

Jin Zong, Weichen Liang, Yiwei Zhao, Mengyu Wu, Bo Liu, Guomin Luo

Author Affiliations +

Proceedings Volume 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023); 131598Q (2024) https://doi.org/10.1117/12.3024480
Event: Eighth International Conference on Energy System, Electricity and Power (ESEP 2023), 2023, Wuhan, China

Abstract

Distributed generator (DG) decentralized access to the distribution network, so that the current characteristics presented during the fault period are different from the traditional distribution network, and the current characteristics are more complicated. The variation of DG's output in different time periods leads to the inability of stage current protection to accurately discriminate. In this paper, firstly, the low-voltage ride-through control strategy is considered, and the current characteristic model of DG output port is established. Then, the current characteristics during the fault period after decentralized access of multiple DGs are analyzed. The optimization scheme of adjusting the protection value according to the DG parameters by time period is proposed by combining the output information of DG in different time periods. Finally, it is verified through examples that the proposed protection scheme can enhance the protection range of section I and significantly improve the sensitivity of section II, which has practical application value.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jin Zong, Weichen Liang, Yiwei Zhao, Mengyu Wu, Bo Liu, and Guomin Luo "Optimization of time-sharing over-current protection setting value for distribution network with decentralized access of distributed power supply", Proc. SPIE 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023), 131598Q (13 May 2024); https://doi.org/10.1117/12.3024480

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