Improvement of the Protection Scheme of Non-selective Current Speed Section of Important Power Supply Lines
Taking the 10kV cable line laid underground in the expansion of the campus of Southern University of Science and Technology as an example,this article analyzes the current situation of short circuit override trip,proposes an improvement plan for non-selective current quick break protection of important power lines,and analyzes its improvement technology. After improvement,there have been no incidents of power override trip in the school's daily power supply for 6 years.
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