Aug 2026· Journal of Physics, Conference Series· Vol 3300, pp. 012003· 0 citations· 5 references
Physics
Abstract
This article presents an in-depth analysis of the transient process of power transmission line tripping due to 66kV single-phase grounding faults in the power system. Based on the characteristics of neutral-point non-direct grounding methods, it explores the formation mechanisms of fault current and voltage transients, as well as the key factors in the tripping process. By combining theoretical analysis with practical cases, a transient equivalent circuit model was established, and the transient current expression of the fault path was derived. The research results indicate that if single-phase grounding faults are not addressed promptly, they can easily lead to phase-to-phase short circuits, equipment insulation breakdown, and protection tripping, resulting in power grid accidents. This article provides theoretical support and practical reference for fault diagnosis and protection strategy optimization in distribution networks.
With the expansion of power systems and the integration of renewable energy sources, the probability of single-phase grounding faults in 220 kV high-voltage transmission lines has significantly increased. Accurately calculating fault currents is crucial for relay protection setting, circuit breaker selection, and the s...
Han Xiao, Chao Sun, Xiao-Li Qu et al.· Journal of Physics, Conferen...· 0 citations
DC distribution networks employing a low-current grounding method offer high power supply reliability. However, when a single-pole grounding fault occurs on a feeder, the fault current characteristics are not distinct, making accurate fault identification and feeder protection challenging. Prolonged operation with the...
Wei Jin, Rui-Ya Zhang, Zi-Jie Hu et al.· Energies· 0 citations
Single-line-to-ground (SLG) faults in medium-voltage distribution networks can produce significant capacitive currents and transient overvoltages, particularly in cable-dominated networks with different neutral-grounding arrangements. This study develops a phase-coordinate modeling framework for three-phase distributio...
S. Lebedka, I. Diahovchenko, M. Petrovskyi et al.· Electronics· 0 citations
This paper examines the transient power-angle stability of grid-forming converters (GFMs) subjected to grid faults. Existing studies commonly simplify the network as a purely inductive line and use ideal fault assumptions, which makes it difficult to describe how practical fault conditions influence power transmission...
X.-Y. Deng, X.-L. Zhu, Y. Hu et al.· Advanced Electromagnetics· 0 citations
In recent years, high penetrations of inverter-based resources are posing significant challenges to the medium-voltage networks, in which protection schemes based on high fault currents and unidirectional power flow may not perform as expected. This paper proposes a dynamic fault-detection and relay-coordination scheme...
Muhammad Abdul Rauf, Munira Batool, I. Madni· Energies· 0 citations
With the growth of emerging data centers and electric vehicles, DC power distribution and hybrid microgrids are attracting growing attention. Due to the lack of a natural zero-crossing point in DC current, reliable DC fault protection is critical. This paper introduces a transient-minimized fault protection scheme util...
