电弧光保护在应用实践中的改进  

Improvement of electric arc light protection in practical application

作　　者：王德志 张爱萍 

机构地区：[1]武威供电公司,甘肃武威733000

出　　处：《电力系统保护与控制》2009年第24期230-231,共2页Power System Protection and Control

摘　　要：阐述了弧光保护在变电站10kV高压室的有效应用,通过比较两种应用、两种保护方式,提出电弧光保护应用的最佳模式。电弧光保护作为开关柜内母线的主保护,能够数毫秒级切断故障,有效地保护变压器不受损伤,减轻故障设备的损坏程度。由于电缆头的爆炸或电缆沟起火引起的开关柜事故更多,而原来电弧光保护仅能保护母线桥(包括母线室),通过扩展电弧光保护的保护范围,在电缆头爆炸后在极短时间内将馈线柜断路器切断,成为我们在改造实践中完成的重要改进。It is discussed in this paper that electric light arc protection is applied in 10kV switchgear chambers of substations. The best model of electric arc protection is given by comparing two kinds of applications and way for protection. The electric arc protection as the main protective equipment effectively within the switch in milliseconds from damaging device. Because of the explosion of cable head or cable fire accident caused more, and the original electric switch can only protect busbar bridge including bus room, after extending electric arc of protection range, the improved protection can cut off breakers of chambers in a very short time when cable head is in explosion.

关 键 词：弧光 保护 快速 实践 改进 

分 类 号：TM773[电气工程—电力系统及自动化]