Affiliation:
1. State Grid Hubei Electric Power Research Institute, Wuhan 430077, China
2. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, China
Abstract
The arc suppression device based on ground fault transfer (GFT) has been preliminarily applied in the medium voltage distribution network (MVDN). An accurate travelling wave (TW) fault location method is proposed to extend the use of the ground fault transfer device. D-PMU is used as a travelling wave detection tool to record the transient voltage travelling waves of fault grounding and bus active grounding during arc suppression. Then, the faulty section is identified through the time difference of travelling wave arrival at the upstream and downstream measurement points. On this basis, the fault location equations of the arrival time and distance of the upstream travelling wave are established, and an accurate fault location method based on the arrival time difference of the travelling wave is proposed. The simulation model is established by PSCAD/EMTDC, and the results show that the method has high location accuracy, and the absolute error is less than 30 m. It is not affected by the TW velocity, the fault conditions, or the distributed power sources.
Funder
National Natural Science Foundation of China
Subject
Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering
Reference29 articles.
1. An accurate fault location method for distribution network based on an active transfer arc-suppression device;Qiao;Energy Rep.,2021
2. Pu, Z., Liu, H., Wang, Y., Yu, X., and Wu, T. (2023). Simulation and Protection of Reignition Overvoltage in Wind Farm Considering Microscopic Dielectric Recovery Process of Vacuum Circuit Breaker. Energies, 16.
3. The test and analysis of automatic tracking arc suppression compensation device and fault transfer grounding device on-site fault treatment;Yan;Distrib. Util.,2017
4. Wu, D., and Wang, J.-f. (2021). Lightning Protection of the Explosion Airflow Arc-Quenching Gap for 110 kV Transmission Lines. Energies, 14.
5. Toader, D., Vintan, M., Solea, C., Vesa, D., and Greconici, M. (2021). Analysis of the Possibilities of Selective Detection of a Single Line-to-Ground Fault in a Medium Voltage Network with Isolated Neutral. Energies, 14.