Distribution network differential protection technology based on 5G communication and improved DTW

Zhen Xu; Deguang Zhang; Chuangye Zhao; Yongyi Zhao; Weisen Shu; Yuhui Huang

doi:10.1117/12.3004372

25 September 2023 Distribution network differential protection technology based on 5G communication and improved DTW

Zhen Xu, Deguang Zhang, Chuangye Zhao, Yongyi Zhao, Weisen Shu, Yuhui Huang

Proceedings Volume 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023); 127884Z (2023) https://doi.org/10.1117/12.3004372
Event: Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 2023, Kuala Lumpur, Malaysia

Abstract

With a large number of distributed power generations connected to the distribution network, the distribution network has transformed into a multi-source and multi-terminal network, and the requirements for relay protection performance are increasing. Current differential protection is very suitable for the problem of multi-source network failure in distribution networks, but differential protection relies on fibre channel, which has problems such as high cost and difficult laying, which is difficult to promote and apply. This paper proposes a distribution network differential protection scheme based on 5G communication, which aims to replace optical fiber by using the advantages of low latency and low cost of 5G communication and improve the practicality of differential protection of distribution network. To solve the problem of communication delay and delay jitter, an improved dynamic time Warping (DTW) algorithm was introduced. Aiming at the shortcomings of traditional DTW algorithms, such as large overhead, algorithm accuracy and efficiency limited by sequence amplitude difference, and empirical selection of parameters, the global path constraint strategy, data standardization strategy and particle swarm optimization strategy are proposed to be improved. Simulation results show that the differential protection method of distribution network based on 5G communication and improved DTW is selective and fast, and can be reliably operated in different scenarios.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhen Xu, Deguang Zhang, Chuangye Zhao, Yongyi Zhao, Weisen Shu, and Yuhui Huang "Distribution network differential protection technology based on 5G communication and improved DTW", Proc. SPIE 12788, Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023), 127884Z (25 September 2023); https://doi.org/10.1117/12.3004372

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KEYWORDS

Power supplies

Data communications

Clocks

Particle swarm optimization

Detection and tracking algorithms

Wireless communications

Information security

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