Identification and Analysis of a Three-phase Short-circuit Fault Caused by 10 kV Single-phase Grounding

In this paper, an accident case of two-phase off-ground short-circuit caused by single-phase grounding in a 10 kV low-current grounding system, which eventually developed into three-phase short-circuit, was identified and analyzed through fault records and on-site fault information, the cause of the fault was described, and preventive measures and suggestions were put forward.