母线保护电压闭锁元件误动分析  

Busbar protection for blocking voltage element malfunction

作　　者：宋小欣[1] 戴斌[1] 毛鹏[1] 

机构地区：[1]江西省电力公司超高压分公司,江西南昌330029

出　　处：《江西电力》2009年第2期16-19,共4页Jiangxi Electric Power

摘　　要：220kV母线保护在变电站内属十分重要的元件保护,一旦动作则会跳开数条线路。通常在保护中用电压闭锁元件防止保护误动,只有电压满足动作条件而开放元件后,保护才能动作。本文通过一套保护出现电压开放的现象,分析了电压元件采用的算法,阐述了各种算法的优缺点,提出了改进意见。220 kV bus protection is an important element protection in the substation. It prevent from malfunction by the blocking voltage element, which nnblock busbar protection when line-line voltage is lower than low-voltage set value or zero-sequence voltage is higher than zero-sequence voltage set value. In this paper, merits and faults of different blocking voltage algorithms are presented. Finally, an improved blocking voltage algorithm is proposed.

关 键 词：母线保护 电压闭锁 滤波算法 

分 类 号：TM773[电气工程—电力系统及自动化]