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电网技术  2011 

考虑波速变化特性的直流输电线路行波故障测距新算法

, PP. 226-231

Keywords: 变化波速,直流输电,行波故障测距

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Abstract:

本文提出了一种考虑波速变化特性的新型直流行波故障测距算法,有效解决了由于采用固定波速造成的某些故障距离下测距误差过大的问题。首先对故障行波的变波速特性进行了深入分析,得到了对于合适分辨率的测距装置行波波速为故障距离一元函数的结论,继而基于这一结论深入分析了变化波速对直流行波故障测距的影响机理并在此基础上提出了考虑波速变化特性的新型故障测距算法。在EMTDC环境下进行了的仿真分析,相关结果证实了所提算法的有效性。

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