一起母线高压电抗器匝间保护动作事件的分析  

Analysis on inter-turn protection in busbar high voltage shunt reactor

作　　者：毛鹏[1] 胡平[1] 吴懿雯 周小兵[1] 

机构地区：[1]江西省电力公司超高压分公司,江西南昌330029 [2]江西省电力公司调度中心,江西南昌330077

出　　处：《江西电力》2009年第2期8-10,13,共4页Jiangxi Electric Power

摘　　要：某500kV新建变电站母线高压电抗器投运时,某相的合闸线圈被烧毁,且由于非全相导致高抗匝间保护迅速动作,出口跳开三相。针对这一典型事件,文中分析了高抗保护装置中匝间保护元件的原理性缺陷,给出具体的修改方案。并通过事后的试验和缺陷排查分析,找出了合闸线圈烧毁的原因。通过对事件的分析,为母线高抗匝间保护的设计以及操作箱的应用提供了经验。The closing coil of one phase breaker was burned when high voltage shunt reactor on the bus was put into running at one new 500 kV station. Due to the condition with only two phases, interturn protection operated without delay and tripped the three phases. As an example, theory limitation of interturn protection relay taken on this event is analyzed and specific modification scheme is also presented. In addition, the reason resulted in burning of closing coil is found through lots of tests and exploring of the defect. Valuable experience for the design of inter-turn protection and application of control box are given through the analysis of this event.

关 键 词：高压电抗器 匝间保护 合闸回路 

分 类 号：TM47[电气工程—电器]