重要电源线路无选择性电流速段保护方案的改进  

Improvement of the Protection Scheme of Non-selective Current Speed Section of Important Power Supply Lines

作　　者：赵文章 ZHAO Wen-zhang(Southern University of Science and Technology)

机构地区：[1]南方科技大学

出　　处：《智能建筑与智慧城市》2024年第S1期146-148,共3页Intelligent Building & Smart City

摘　　要：以南方科技大学校园扩建地下敷设10kV电缆线路为例,对越级跳闸的短路现状进行分析,提出了重要电源线路无选择性电流速断保护的改进方案,并分析其改进技术。改进后学校日常供电6年间没有发生越级跳闸现象。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.

关 键 词：电源线路 保护 整定改进 

分 类 号：TU855[建筑科学] TM773[电气工程—电力系统及自动化]