A method of single-line-to-ground fault line selection in distribution network based on the comprehensive wavelet energy ratio

Huayang Wang; Zhijun Bi; Zhenxing Wang; Xiujing He; Qi Wang; Xiangzong Yu

doi:10.1117/12.2645536

23 November 2022 A method of single-line-to-ground fault line selection in distribution network based on the comprehensive wavelet energy ratio

Huayang Wang, Zhijun Bi, Zhenxing Wang, Xiujing He, Qi Wang, Xiangzong Yu

Author Affiliations +

Proceedings Volume 12302, Seventh International Conference on Electromechanical Control Technology and Transportation (ICECTT 2022); 1230208 (2022) https://doi.org/10.1117/12.2645536
Event: Seventh International Conference on Electromechanical Control Technology and Transportation (ICECTT 2022), 2022, Guangzhou, China

Abstract

The previous fault line selection method usually used the zero-sequence signal after the fault to select the fault feeders, but the connection of the arc suppression coil reduces the fault current and the fault zero-sequence component, which makes the fault line difficult to select. For the distribution network with mixed cables, the performance of the zero-sequence current flowing through different types of non-faulty lines is also quite different. These circumstances obstructed fault line selection. In this paper, the voltage transient process after fault is analyzed in detail. After a single-phase grounding fault occurs in the system, the characteristic frequency band of fault voltage is extracted by discrete wavelet decomposition, and the comprehensive wavelet energy ratio representing the transient content of fault voltage is constructed to select the fault line of single-phase grounding. Simulation experiments of the algorithm are analyzed by PSCAD / EMTDC, and the results show that the proposed algorithm can accurately and reliably select the faulty line.

Citation Download Citation

Huayang Wang, Zhijun Bi, Zhenxing Wang, Xiujing He, Qi Wang, and Xiangzong Yu "A method of single-line-to-ground fault line selection in distribution network based on the comprehensive wavelet energy ratio", Proc. SPIE 12302, Seventh International Conference on Electromechanical Control Technology and Transportation (ICECTT 2022), 1230208 (23 November 2022); https://doi.org/10.1117/12.2645536

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available