Ning Xin, Zhang Hua, Shang Hao, et al. Time-varying characteristic analysis and parameter influence of transition resistance of tree-contact single-phase-to-ground fault[J]. 2025, 62(10).
Ning Xin, Zhang Hua, Shang Hao, et al. Time-varying characteristic analysis and parameter influence of transition resistance of tree-contact single-phase-to-ground fault[J]. 2025, 62(10).DOI:
Tree-contact single-phase-to-ground fault (TSF) may ignite trees and cause fire
threatening the life and property of people. However
the fault characteristics of TSF are weak and difficult to identify
so it is urgent to further study the fault mechanism and characteristics. In this paper
TSF is constructed based on 10 kV analog circuit experiment platform. The experimental results show that the development process of TSF can be roughly divided into four stages. Fault point current waveform has different characteristics in different stages. The transition resistance and the changing rate of transition resistance of TSF gradually decreases with the development of fault. The length
thickness and species of the tree are all able to affect the magnitude and the changing rate of the transition resistance of TSF.