一起同塔双回线路保护动作分析  

Analysis of Protection Action for a Failure of Two Parallel Transmission Lines on the Same Tower

作　　者：郝建刚[1] 张爱国[1] 唐志芳[1] 

机构地区：[1]鹤壁供电公司,河南鹤壁458030

出　　处：《河南电力》2010年第3期21-24,共4页Henan Electric Power

摘　　要：通过对一起同塔双回线路保护动作案例的分析,对该线路高频闭锁和光纤纵差保护的不同动作行为进行了分析,探讨了线路间互感以及二次电压回路干扰对保护动作行为影响,并提出了加装低通滤波器进行抗干扰的措施。This paper investigates a protection action case of the same-tower double-circuit line.The different action performances between the high frequency blocking protection and optical fiber longitudinal differential protection of the line are analyzed firstly.Then the influence of the line mutual inductance and the secondary voltage circuit disturbance on the protection action performance is discussed.Finally, an anti-disturbance strategy using the low-pass filter is proposed.

关 键 词：同塔双回 光纤纵差保护 高频闭锁保护 互感 低通滤波 

分 类 号：TM77[电气工程—电力系统及自动化]