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电网技术  2006 

一种基于加速阻抗圆的无信道保护方法

, PP. 75-79

Keywords: 输电线路,小波分析,继电保护,电力系统,加速阻抗圆

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Abstract:

在故障分析的基础上提出了一种新的利用单端故障信息的输电线路速动保护原理和动作判据。新的保护原理是设计一个加速阻抗圆,通过对故障后负序和零序电流之和的小波分析来判断对侧保护动作与否,当检测到对侧保护动作且测量阻抗落在加速阻抗圆内时保护加速动作。理论分析和ATP仿真结果证明了所提出保护方案的可行性。

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