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Distribution cable arc grounding is the most common type of single-phase ground fault, but its arc characteristics are complex and variable, it is difficult to effectively and quickly identify and protect the action. In this paper, through the study of various arc mathematical models to analyze the various factors affecting the arc characteristics, the use of arc gap energy balance theory, in the classic "cybernetic" arc model on the basis of adjusting the arc length parameter to build a typical distribution cable arc model, the use of EMTP-ATP transient simulation software to build a typical fault model of the distribution cable And carry out the arc grounding fault simulation experiments, according to the test data results can effectively reflect the arc fault characteristics of analysis and comparison, to guide the selection of line protection and distribution terminal fixed value selection is of great significance.
Wang et al. (Thu,) studied this question.
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